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Facility Note

  A B
1
AQ520 Form - Version 2.0
2   Revised 6/5/2025
3   AQ520 Form Instructions
4    
5 Facility Information
6 Facility Name Intel Corporation (Aloha / Ronler Acres)
7 Facility Street Address 3585 SW 198th Avenue / 2501 NE Century Boulevard
8 City Aloha / Hillsboro
9 Zip Code 97007 / 97124
10 Source Number 34-2681-ST-02
11 Facility Contact Ruth Glass
12 Contact Phone Number 971-329-1494
13 Contact Email ruth.glass@intel.com
14 Date of Form Submittal 11/4/2025
15 Facility Notes See Facility Note Tab

1. Facility Information

  A B C D E F G H I J K L M N
1 AQ520 Form - Version 2.0                        
2 Intel Corporation (Aloha / Ronler Acres)                        
3 Source No. 34-2681-ST-02                        
4 Submitted on 11/04/2025                        
6 Toxics Emissions Unit (TEU) Information Emissions Release Information Activity Information
7 Toxics Emissions Unit (TEU) ID Toxics Emissions
Sub-Unit (TESU) ID		 TEU/TESU Description Control Device(s) Emission Type
(Point or Fugitive)		 Stack or Fugitive ID Activity Units Description/Type Annual [units/year] Max Daily [units/day]
8 Actual Requested PTE Is Requested PTE Capacity? Actual Requested
PTE 		Is Requested PTE Capacity?
9 EU-NG-1 RA1-MECH-B01 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOR1_01 MMscf Natural Gas 0.59416802 1.85505882 No 0.01694118 0.01694118 Yes
10 EU-NG-1 RA1-MECH-B02 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOR1_02 MMscf Natural Gas 0.82523336 2.57647059 No 0.02352941 0.02352941 Yes
11 EU-NG-1 RA4-BLR152-2-30 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOR4_01 MMscf Natural Gas 0.515 5.15036471 No 0.04703529 0.04703529 Yes
12 EU-NG-1 RA4-BLR152-1-30 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOR4_02 MMscf Natural Gas 0.515 5.15036471 No 0.04703529 0.04703529 Yes
13 EU-NG-1 RA4-BLR117-2-30 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOR4_03 MMscf Natural Gas 0.4537234 5.15036471 No 0.04703529 0.04703529 Yes
14 EU-NG-1 RA4-BLR117-1-30 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOR4_04 MMscf Natural Gas 0.66538322 5.15036471 No 0.04703529 0.04703529 Yes
15 EU-NG-1 BLR-115-1-210 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOC3_01 MMscf Natural Gas 0.02739624 21.03688235 No 0.19211765 0.19211765 Yes
16 EU-NG-1 RA2-BLR115-1-300 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOR2_01 MMscf Natural Gas 5.53086728 10.82117647 No 0.09882353 0.09882353 Yes
17 EU-NG-1 RA2-BLR115-2-300 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOR2_02 MMscf Natural Gas 5.53492843 10.82117647 No 0.09882353 0.09882353 Yes
18 EU-NG-1 RS4-BLR115-1 Natural Gas Combustion Boilers <10 MMBtu/hr Point BORS4_01 MMscf Natural Gas Future Installation 5.15294118 No Future Installation 0.04705882 Yes
19 EU-NG-1 RS4-BLR115-2 Natural Gas Combustion Boilers <10 MMBtu/hr Point BORS4_02 MMscf Natural Gas Future Installation 5.15294118 No Future Installation 0.04705882 Yes
20 EU-NG-1 RS4-BLR115-3 Natural Gas Combustion Boilers <10 MMBtu/hr Point BORS4_03 MMscf Natural Gas Future Installation 1.28823529 No Future Installation 0.01176471 Yes
21 EU-NG-1 RS6-BLR115-1 Natural Gas Combustion Boilers <10 MMBtu/hr Point BORS6_01 MMscf Natural Gas Future Installation 5.15294118 No Future Installation 0.04705882 Yes
22 EU-NG-1 RS6-BLR115-2 Natural Gas Combustion Boilers <10 MMBtu/hr Point BORS6_02 MMscf Natural Gas Future Installation 5.15294118 No Future Installation 0.04705882 Yes
23 EU-NG-1 RS6-BLR115-3 Natural Gas Combustion Boilers <10 MMBtu/hr Point BORS6_03 MMscf Natural Gas Future Installation 1.28823529 No Future Installation 0.01176471 Yes
24 EU-NG-1 F15-HW35-3 Natural Gas Combustion Boilers <10 MMBtu/hr Point BOF15_04 MMscf Natural Gas 0.10358818 1.54588235 No 0.01411765 0.01411765 Yes
25 EU-NG-2 F15-HW35-4 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOF15_05 MMscf Natural Gas 0.10358818 1.54588235 No 0.01411765 0.01411765 Yes
26 EU-NG-2 F20-BLR115-1-200 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC1_01 MMscf Natural Gas 51.98833926 81.15882353 No 0.74117647 0.74117647 Yes
27 EU-NG-2 F20-BLR115-2-200 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC1_02 MMscf Natural Gas 39.5890545 81.15882353 No 0.74117647 0.74117647 Yes
28 EU-NG-2 F20-BLR115-3-200 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC1_03 MMscf Natural Gas 70.18610075 81.15882353 No 0.74117647 0.74117647 Yes
29 EU-NG-2 F20-BLR115-4-200 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC1_04 MMscf Natural Gas 28.27693967 78.87864706 No 0.72035294 0.72035294 Yes
30 EU-NG-2 F20-BLR115-5-200 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC1_05 MMscf Natural Gas Future Installation 75.7302 No Future Installation 0.6916 Yes
31 EU-NG-2 CUB2-BLR115-1-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC2_01 MMscf Natural Gas 12.40308931 82.73562353 No 0.75557647 0.75557647 Yes
32 EU-NG-2 CUB2-BLR115-2-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC2_02 MMscf Natural Gas 60.50855019 82.73562353 No 0.75557647 0.75557647 Yes
33 EU-NG-2 CUB2-BLR115-3-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC2_03 MMscf Natural Gas 37.16628146 82.73562353 No 0.75557647 0.75557647 Yes
34 EU-NG-2 CUB2-BLR115-4-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC2_04 MMscf Natural Gas 25.10396829 84.14366471 No 0.76843529 0.76843529 Yes
35 EU-NG-2 CUB2-BLR115-5-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC2_05 MMscf Natural Gas 21.61251654 75.72762353 No 0.69157647 0.69157647 Yes
36 EU-NG-2 CUB2-BLR115-6-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC2_06 MMscf Natural Gas 65.25787762 78.88637647 No 0.72042353 0.72042353 Yes
37 EU-NG-2 RA4-BLR117-3-30 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOR4_05 MMscf Natural Gas Future Installation 75.7302 No Future Installation 0.6916 Yes
38 EU-NG-2 RA4-BLR117-4-30 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOR4_06 MMscf Natural Gas Future Installation 75.7302 No Future Installation 0.6916 Yes
39 EU-NG-2 BLR-115-2-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC3_02 MMscf Natural Gas 0.8681133 75.7302 No 0.6916 0.6916 Yes
40 EU-NG-2 BLR-115-3-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC3_03 MMscf Natural Gas 0.17511042 75.7302 No 0.6916 0.6916 Yes
41 EU-NG-2 BLR-115-4-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC3_04 MMscf Natural Gas 0.51833356 84.14495294 No 0.76844706 0.76844706 Yes
42 EU-NG-2 BLR-115-5-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC3_05 MMscf Natural Gas 31.83089575 36.81261176 No 0.33618824 0.33618824 Yes
43 EU-NG-2 BLR-115-6-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC3_06 MMscf Natural Gas Future Installation 75.72762353 No Future Installation 0.69157647 Yes
44 EU-NG-2 RP1-BLR115-1-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BORP1_01 MMscf Natural Gas 22.25154942 35.81036471 No 0.32703529 0.32703529 Yes
45 EU-NG-2 RP1-BLR115-2-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BORP1_02 MMscf Natural Gas 25.36517498 31.55403529 No 0.28816471 0.28816471 Yes
46 EU-NG-2 RP1-BLR115-3-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BORP1_03 MMscf Natural Gas 11.86760465 31.55403529 No 0.28816471 0.28816471 Yes
47 EU-NG-2 RP1-BLR115-4-210 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BORP1_04 MMscf Natural Gas Future Installation 30.18335294 No Future Installation 0.27564706 Yes
48 EU-NG-2 CUB4-BLR115-1-10 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC4_01 MMscf Natural Gas 1.7064787 36.81003529 No 0.33616471 0.33616471 Yes
49 EU-NG-2 CUB4-BLR115-2-10 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC4_02 MMscf Natural Gas 21.98434809 78.87864706 No 0.72035294 0.72035294 Yes
50 EU-NG-2 CUB4-BLR115-3-10 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC4_03 MMscf Natural Gas 18.68874441 78.87864706 No 0.72035294 0.72035294 Yes
51 EU-NG-2 CUB4-BLR115-4-10 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC4_04 MMscf Natural Gas 10.70248072 78.87864706 No 0.72035294 0.72035294 Yes
52 EU-NG-2 CUB4-BLR115-5-10 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC4_05 MMscf Natural Gas 7.28176795 75.7302 No 0.6916 0.6916 Yes
53 EU-NG-2 CUB4-BLR115-6-10 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC4_06 MMscf Natural Gas 26.48957873 75.7302 No 0.6916 0.6916 Yes
54 EU-NG-2 CUB4-BLR115-7-10 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC4_07 MMscf Natural Gas Future Installation 75.7302 No Future Installation 0.6916 Yes
55 EU-NG-2 RAC5-BLR115-1 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC5_01 MMscf Natural Gas 4.46755563 75.72247059 No 0.69152941 0.69152941 Yes
56 EU-NG-2 RAC5-BLR115-2 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC5_02 MMscf Natural Gas 18.26592733 75.72247059 No 0.69152941 0.69152941 Yes
57 EU-NG-2 RAC5-BLR115-3 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC5_03 MMscf Natural Gas 44.3422493 75.72247059 No 0.69152941 0.69152941 Yes
58 EU-NG-2 RAC5-BLR115-4 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC5_04 MMscf Natural Gas 17.58641142 75.72247059 No 0.69152941 0.69152941 Yes
59 EU-NG-2 F15-BLR28-1-1 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOF15_01 MMscf Natural Gas 36.65228992 53.90491765 No 0.49228235 0.49228235 Yes
60 EU-NG-2 F15-BLR28-1-2 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOF15_02 MMscf Natural Gas 47.58475696 53.90491765 No 0.49228235 0.49228235 Yes
61 EU-NG-2 F15-BLR28-1-3 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOF15_03 MMscf Natural Gas 26.02034589 53.90491765 No 0.49228235 0.49228235 Yes
62 EU-NG-2 RAC5-BLR115-5 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC5_05 MMscf Natural Gas 0.06838118 75.72247059 No 0.69152941 0.69152941 Yes
63 EU-NG-2 RAC5-BLR115-6 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC5_06 MMscf Natural Gas 6.81731024 75.72247059 No 0.69152941 0.69152941 Yes
64 EU-NG-2 RAC5-BLR115-7 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC5_07 MMscf Natural Gas Future Installation 75.72247059 No Future Installation 0.69152941 Yes
65 EU-NG-2 RAC5-BLR115-8 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BOC5_08 MMscf Natural Gas Future Installation 75.72247059 No Future Installation 0.69152941 Yes
66 EU-NG-2 N2-BLR117-1A-30 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BON2_02 MMscf Natural Gas 0.0742719 117.48705882 No 1.07294118 1.07294118 Yes
67 EU-NG-2 N2-BLR117-1B-30 Natural Gas Combustion Boilers 10-100 MMBtu/hr Point BON2_03 MMscf Natural Gas 0.0742719 117.48705882 No 1.07294118 1.07294118 Yes
68 EU-NG-3 F20-VOC138-1-100 Natural Gas Combustion RCTO   Point RCTO-01_M MMscf Natural Gas 5.1155562 17.17647059 Yes 0.04705882 0.04705882 Yes
69 EU-NG-3 F20-VOC138-2-100 Natural Gas Combustion RCTO   Point RCTO-02_M MMscf Natural Gas 4.92375976 17.17647059 Yes 0.04705882 0.04705882 Yes
70 EU-NG-3 F20-VOC138-3-100 Natural Gas Combustion RCTO   Point RCTO-03_M MMscf Natural Gas 4.69591439 17.17647059 Yes 0.04705882 0.04705882 Yes
71 EU-NG-3 D1B-VOC138-4-120 Natural Gas Combustion RCTO   Point RCTO-05_M MMscf Natural Gas 15.32164429 68.70588235 Yes 0.18823529 0.18823529 Yes
72 EU-NG-3 D1B-VOC138-5-120 Natural Gas Combustion RCTO   Point RCTO-06_M MMscf Natural Gas 15.57729297 68.70588235 Yes 0.18823529 0.18823529 Yes
73 EU-NG-3 D1C-VOC138-1-120 Natural Gas Combustion RCTO   Point TODC_01 MMscf Natural Gas 10.63314282 17.17647059 Yes 0.04705882 0.04705882 Yes
74 EU-NG-3 D1C-VOC138-2-120 Natural Gas Combustion RCTO   Point TODC_02 MMscf Natural Gas 8.77522009 17.17647059 Yes 0.04705882 0.04705882 Yes
75 EU-NG-3 D1C-VOC138-3-120 Natural Gas Combustion RCTO   Point TODC_03 MMscf Natural Gas 12.3651994 17.17647059 Yes 0.04705882 0.04705882 Yes
76 EU-NG-3 VOC-138-1-120 Natural Gas Combustion RCTO   Point TODD_01 MMscf Natural Gas 12.70088995 17.17647059 Yes 0.04705882 0.04705882 Yes
77 EU-NG-3 VOC-138-2-120 Natural Gas Combustion RCTO   Point TODD_02 MMscf Natural Gas 11.90526587 17.17647059 Yes 0.04705882 0.04705882 Yes
78 EU-NG-3 VOC-138-3-120 Natural Gas Combustion RCTO   Point TODD_03 MMscf Natural Gas 11.87696185 17.17647059 Yes 0.04705882 0.04705882 Yes
79 EU-NG-3 VOC-138-4-120 Natural Gas Combustion RCTO   Point TODD_04 MMscf Natural Gas 12.44982581 17.17647059 Yes 0.04705882 0.04705882 Yes
80 EU-NG-3 VOC-138-5-120 Natural Gas Combustion RCTO   Point TODD_05 MMscf Natural Gas Future Installation 68.70588235 Yes Future Installation 0.18823529 Yes
81 EU-NG-3 VOC-138-6-120 Natural Gas Combustion RCTO   Point TODD_06 MMscf Natural Gas Future Installation 68.70588235 Yes Future Installation 0.18823529 Yes
82 EU-NG-3 D1XM1-VOC138-1-20 Natural Gas Combustion RCTO   Point TOM1_01 MMscf Natural Gas 3.76682387 30.05882353 Yes 0.08235294 0.08235294 Yes
83 EU-NG-3 D1XM1-VOC138-2-20 Natural Gas Combustion RCTO   Point TOM1_02 MMscf Natural Gas 13.52757593 30.05882353 Yes 0.08235294 0.08235294 Yes
84 EU-NG-3 D1XM1-VOC138-3-20 Natural Gas Combustion RCTO   Point TOM1_03 MMscf Natural Gas 15.65740564 30.05882353 Yes 0.08235294 0.08235294 Yes
85 EU-NG-3 D1XM1-VOC138-4-20 Natural Gas Combustion RCTO   Point TOM1_04 MMscf Natural Gas 16.73422534 30.05882353 Yes 0.08235294 0.08235294 Yes
86 EU-NG-3 D1XM1-VOC138-5-20 Natural Gas Combustion RCTO   Point TWM1_01 MMscf Natural Gas 27.49430814 68.70588235 Yes 0.18823529 0.18823529 Yes
87 EU-NG-3 D1XM1-VOC138-6-20 Natural Gas Combustion RCTO   Point TWM1_02 MMscf Natural Gas 31.40250159 68.70588235 Yes 0.18823529 0.18823529 Yes
88 EU-NG-3 D1XM1-VOC138-7-20 Natural Gas Combustion RCTO   Point TWM1_03 MMscf Natural Gas 20.2234921 68.70588235 Yes 0.18823529 0.18823529 Yes
89 EU-NG-3 D1XM1-VOC138-8-20 Natural Gas Combustion RCTO   Point TWM1_04 MMscf Natural Gas Future Installation 68.70588235 Yes Future Installation 0.18823529 Yes
90 EU-NG-3 D1XM2 -VOC138-1-20 Natural Gas Combustion RCTO   Point TIM2_06 MMscf Natural Gas 14.98546521 68.70588235 Yes 0.18823529 0.18823529 Yes
91 EU-NG-3 D1XM2 -VOC138-2-20 Natural Gas Combustion RCTO   Point TIM2_07 MMscf Natural Gas 21.24082678 68.70588235 Yes 0.18823529 0.18823529 Yes
92 EU-NG-3 D1XM2 -VOC138-3-20 Natural Gas Combustion RCTO   Point TIM2_08 MMscf Natural Gas 5.94841458 68.70588235 Yes 0.18823529 0.18823529 Yes
93 EU-NG-3 D1XM2 -VOC138-4-20 Natural Gas Combustion RCTO   Point TIM2_09 MMscf Natural Gas 7.35855902 68.70588235 Yes 0.18823529 0.18823529 Yes
94 EU-NG-3 D1XM2 -VOC138-5-20 Natural Gas Combustion RCTO   Point TIM2_01 MMscf Natural Gas Future Installation 68.70588235 Yes Future Installation 0.18823529 Yes
95 EU-NG-3 D1XM3-VOC138-1-20 Natural Gas Combustion RCTO   Point TIM3_01 MMscf Natural Gas Future Installation 68.70588235 Yes Future Installation 0.18823529 Yes
96 EU-NG-3 D1XM3-VOC138-2-20 Natural Gas Combustion RCTO   Point TIM3_02 MMscf Natural Gas Future Installation 68.70588235 Yes Future Installation 0.18823529 Yes
97 EU-NG-3 D1XM3-VOC138-3-20 Natural Gas Combustion RCTO   Point TIM3_03 MMscf Natural Gas Future Installation 68.70588235 Yes Future Installation 0.18823529 Yes
98 EU-NG-3 D1XM3-VOC138-4-20 Natural Gas Combustion RCTO   Point TIM3_04 MMscf Natural Gas Future Installation 68.70588235 Yes Future Installation 0.18823529 Yes
99 EU-NG-3 D1XM3-VOC138-5-20 Natural Gas Combustion RCTO   Point TIM3_05 MMscf Natural Gas Future Installation 68.70588235 Yes Future Installation 0.18823529 Yes
100 EU-NG-3 F15-VOC-138-2-10 Natural Gas Combustion RCTO   Point TOF15_03 MMscf Natural Gas 9.3106335 17.17647059 Yes 0.04705882 0.04705882 Yes
101 EU-NG-3 F15-VOC-138-3-10
 Natural Gas Combustion RCTO   Point TOA3_01 MMscf Natural Gas 10.23719881 17.17647059 Yes 0.04705882 0.04705882 Yes
102 EU-NG-3 F15-VOC-138-4-10 Natural Gas Combustion RCTO   Point TOF15_01 MMscf Natural Gas 8.68467533 17.17647059 Yes 0.04705882 0.04705882 Yes
103 EU-NG-3 F15-VOC-138-1-10
 Natural Gas Combustion RCTO   Point TOF15_02 MMscf Natural Gas Future Installation 17.17647059 Yes Future Installation 0.04705882 Yes
104 EU-NG-3 F15-VOC-138-5-10 Natural Gas Combustion RCTO   Point TOF15_04 MMscf Natural Gas Future Installation 17.17647059 Yes Future Installation 0.04705882 Yes
105 EU-NG-4 HER3_01 Natural Gas Combustion Heaters   Point HER3_M MMscf Natural Gas 0.18801452 8.54529412 No 0.04682353 0.04682353 Yes
106 EU-NG-4 HER3_02 Natural Gas Combustion Heaters   Point HER3_M MMscf Natural Gas 0.18801452 8.54529412 No 0.04682353 0.04682353 Yes
107 EU-NG-4 HER3_03 Natural Gas Combustion Heaters   Point HER3_M MMscf Natural Gas 0.18801452 8.54529412 No 0.04682353 0.04682353 Yes
108 EU-NG-4 HER3_04 Natural Gas Combustion Heaters   Point HER3_M MMscf Natural Gas 0.18801452 8.54529412 No 0.04682353 0.04682353 Yes
109 EU-NG-4 HER3_05 Natural Gas Combustion Heaters   Point HER3_M MMscf Natural Gas 0.18801452 8.54529412 No 0.04682353 0.04682353 Yes
110 EU-NG-4 HER3_06 Natural Gas Combustion Heaters   Point HER3_M MMscf Natural Gas 0.18801452 8.54529412 No 0.04682353 0.04682353 Yes
111 EU-NG-4 HER3_07 Natural Gas Combustion Heaters   Point HER3_M MMscf Natural Gas 0.18801452 8.54529412 No 0.04682353 0.04682353 Yes
112 EU-NG-4 HER3_08 Natural Gas Combustion Heaters   Point HER3_M MMscf Natural Gas 0.18801452 8.54529412 No 0.04682353 0.04682353 Yes
113 EU-NG-4 HERS4_01 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 3.65 No 0.02 0.02 Yes
114 EU-NG-4 HERS4_02 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 3.65 No 0.02 0.02 Yes
115 EU-NG-4 HERS4_03 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 1.50294118 No 0.00823529 0.00823529 Yes
116 EU-NG-4 HERS4_04 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 1.50294118 No 0.00823529 0.00823529 Yes
117 EU-NG-4 HERS4_05 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 0.64411765 No 0.00352941 0.00352941 Yes
118 EU-NG-4 HERS4_06 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.3435 0.34352941 No 0.00188235 0.00188235 Yes
119 EU-NG-4 HERS4_07 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 0.85882353 No 0.00470588 0.00470588 Yes
120 EU-NG-4 HERS4_08 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 0.85882353 No 0.00470588 0.00470588 Yes
121 EU-NG-4 HERS4_09 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 0.85882353 No 0.00470588 0.00470588 Yes
122 EU-NG-4 HERS4_10 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 0.85882353 No 0.00470588 0.00470588 Yes
123 EU-NG-4 HERS4_11 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 0.85882353 No 0.00470588 0.00470588 Yes
124 EU-NG-4 HERS4_12 Natural Gas Combustion Heaters   Point HERS4_M MMscf Natural Gas 0.37839761 2.06117647 No 0.01129412 0.01129412 Yes
125 EU-NG-4 HERS5_01 Natural Gas Combustion Heaters   Point HERS5_M MMscf Natural Gas 0.37839761 3.65 No 0.02 0.02 Yes
126 EU-NG-4 HERS5_02 Natural Gas Combustion Heaters   Point HERS5_M MMscf Natural Gas 0.37839761 3.65 No 0.02 0.02 Yes
127 EU-NG-4 HERS5_03 Natural Gas Combustion Heaters   Point HERS5_M MMscf Natural Gas 0.37839761 3.65 No 0.02 0.02 Yes
128 EU-NG-4 HERS5_04 Natural Gas Combustion Heaters   Point HERS5_M MMscf Natural Gas 0.37839761 3.65 No 0.02 0.02 Yes
129 EU-NG-4 HERS5_05 Natural Gas Combustion Heaters   Point HERS5_M MMscf Natural Gas 0.37839761 2.14705882 No 0.01176471 0.01176471 Yes
130 EU-NG-4 HERS5_06 Natural Gas Combustion Heaters   Point HERS5_M MMscf Natural Gas 0.37839761 2.14705882 No 0.01176471 0.01176471 Yes
131 EU-NG-4 HERS5_07 Natural Gas Combustion Heaters   Point HERS5_M MMscf Natural Gas 0.37839761 2.14705882 No 0.01176471 0.01176471 Yes
132 EU-NG-4 HERS5_08 Natural Gas Combustion Heaters   Point HERS5_M MMscf Natural Gas 0.37839761 2.14705882 No 0.01176471 0.01176471 Yes
133 EU-NG-4 HERS5_09 Natural Gas Combustion Heaters   Point HERS5_M MMscf Natural Gas 0.37839761 8.58394118 No 0.04703529 0.04703529 Yes
134 EU-NG-4 HERS6_01 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 1.71764706 No 0.00941176 0.00941176 Yes
135 EU-NG-4 HERS6_02 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 1.71764706 No 0.00941176 0.00941176 Yes
136 EU-NG-4 HERS6_03 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 1.50294118 No 0.00823529 0.00823529 Yes
137 EU-NG-4 HERS6_04 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 0.51529412 No 0.00282353 0.00282353 Yes
138 EU-NG-4 HERS6_05 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 1.71764706 No 0.00941176 0.00941176 Yes
139 EU-NG-4 HERS6_06 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 0.85882353 No 0.00470588 0.00470588 Yes
140 EU-NG-4 HERS6_07 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 0.85882353 No 0.00470588 0.00470588 Yes
141 EU-NG-4 HERS6_08 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 0.85882353 No 0.00470588 0.00470588 Yes
142 EU-NG-4 HERS6_09 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 0.85882353 No 0.00470588 0.00470588 Yes
143 EU-NG-4 HERS6_10 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 0.85882353 No 0.00470588 0.00470588 Yes
144 EU-NG-4 HERS6_11 Natural Gas Combustion Heaters   Point HERS6_M MMscf Natural Gas 0.18853106 2.06117647 No 0.01129412 0.01129412 Yes
145 EU-NG-4 HELT4_01 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
146 EU-NG-4 HELT4_02 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
147 EU-NG-4 HELT4_03 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
148 EU-NG-4 HELT4_04 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
149 EU-NG-4 HELT4_05 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
150 EU-NG-4 HELT4_06 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
151 EU-NG-4 HELT4_07 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
152 EU-NG-4 HELT4_08 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
153 EU-NG-4 HELT4_09 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
154 EU-NG-4 HELT4_10 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
155 EU-NG-4 HELT4_11 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
156 EU-NG-4 HELT4_12 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
157 EU-NG-4 HELT4_13 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
158 EU-NG-4 HELT4_14 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
159 EU-NG-4 HELT4_15 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
160 EU-NG-4 HELT4_16 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
161 EU-NG-4 HELT4_17 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
162 EU-NG-4 HELT4_18 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
163 EU-NG-4 HELT4_19 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
164 EU-NG-4 HELT4_20 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
165 EU-NG-4 HELT4_21 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.53676471 No 0.00294118 0.00294118 Yes
166 EU-NG-4 HELT4_22 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.34352941 No 0.00188235 0.00188235 Yes
167 EU-NG-4 HELT4_23 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.34352941 No 0.00188235 0.00188235 Yes
168 EU-NG-4 HELT4_24 Natural Gas Combustion Heaters   Point HELT4_M MMscf Natural Gas 0.1920394 0.34352941 No 0.00188235 0.00188235 Yes
169 EU-NG-4 HEAL_01 Natural Gas Combustion Heaters   Point HEAL_M MMscf Natural Gas 0.00583333 0.51529412 No 0.00282353 0.00282353 Yes
170 EU-NG-4 HEAL_02 Natural Gas Combustion Heaters   Point HEAL_M MMscf Natural Gas 0.00583333 0.53676471 No 0.00294118 0.00294118 Yes
171 EU-NG-4 HEAL_03 Natural Gas Combustion Heaters   Point HEAL_M MMscf Natural Gas 0.00583333 0.56682353 No 0.00310588 0.00310588 Yes
172 EU-NG-4 HEAL_04 Natural Gas Combustion Heaters   Point HEAL_M MMscf Natural Gas 0.00583333 0.56682353 No 0.00310588 0.00310588 Yes
173 EU-NG-4 HEAL_05 Natural Gas Combustion Heaters   Point HEAL_M MMscf Natural Gas 0.00583333 0.56682353 No 0.00310588 0.00310588 Yes
174 EU-NG-4 HEAL_06 Natural Gas Combustion Heaters   Point HEAL_M MMscf Natural Gas 0.00583333 0.47235294 No 0.00258824 0.00258824 Yes
175 EU-NG-4 HERS2_01 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
176 EU-NG-4 HERS2_02 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
177 EU-NG-4 HERS2_03 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
178 EU-NG-4 HERS2_04 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
179 EU-NG-4 HERS2_05 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
180 EU-NG-4 HERS2_06 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
181 EU-NG-4 HERS2_07 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
182 EU-NG-4 HERS2_08 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
183 EU-NG-4 HERS2_09 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
184 EU-NG-4 HERS2_10 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
185 EU-NG-4 HERS2_11 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
186 EU-NG-4 HERS2_12 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
187 EU-NG-4 HERS2_13 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
188 EU-NG-4 HERS2_14 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
189 EU-NG-4 HERS2_15 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
190 EU-NG-4 HERS2_16 Natural Gas Combustion Heaters   Point HERS2_M MMscf Natural Gas 0.1920394 0.85882353 No 0.00470588 0.00470588 Yes
191 EU-NG-4 HERA1_01 Natural Gas Combustion Heaters   Point HERA1_M MMscf Natural Gas 0.10315417 0.32205882 No 0.00176471 0.00176471 Yes
192 EU-NG-4 HERA1_02 Natural Gas Combustion Heaters   Point HERA1_M MMscf Natural Gas 0.10315417 0.32205882 No 0.00176471 0.00176471 Yes
193 EU-NG-4 HEC4_01 Natural Gas Combustion Heaters   Point HEC4_M MMscf Natural Gas 0.16365671 1.28823529 No 0.00705882 0.00705882 Yes
194 EU-NG-4 HEPB1_01 Natural Gas Combustion Heaters   Point HEPB1_M MMscf Natural Gas 0.0729 1.28823529 No 0.00705882 0.00705882 Yes
195 EU-NG-4 HEC5_01 Natural Gas Combustion Heaters   Point HEC5_M MMscf Natural Gas Future Installation 1.28823529 No Future Installation 0.00705882 Yes
196 EU-NG-4 HERA5_01 Natural Gas Combustion Heaters   Point HERA5_M MMscf Natural Gas Future Installation 3.09176471 No Future Installation 0.01694118 Yes
197 EU-NG-4 HERA5_02 Natural Gas Combustion Heaters   Point HERA5_M MMscf Natural Gas Future Installation 4.29411765 No Future Installation 0.02352941 Yes
198 EU-NG-4 HERA5_03 Natural Gas Combustion Heaters   Point HERA5_M MMscf Natural Gas Future Installation 4.29411765 No Future Installation 0.02352941 Yes
199 EU-NG-4 HERA6_01 Natural Gas Combustion Heaters   Point HERA6_M MMscf Natural Gas Future Installation 3.09176471 No Future Installation 0.01694118 Yes
200 EU-NG-4 HERA6_02 Natural Gas Combustion Heaters   Point HERA6_M MMscf Natural Gas Future Installation 4.29411765 No Future Installation 0.02352941 Yes
201 EU-NG-4 HERA6_03 Natural Gas Combustion Heaters   Point HERA6_M MMscf Natural Gas Future Installation 4.29411765 No Future Installation 0.02352941 Yes
202 EU-NG-4 HEPB1_02 Natural Gas Combustion Heaters   Point HEPB1_M MMscf Natural Gas Future Installation 5.15294118 No Future Installation 0.02823529 Yes
203 EU-NG-4 HEC5_02 Natural Gas Combustion Heaters   Point HEC5_M MMscf Natural Gas Future Installation 5.15294118 No Future Installation 0.02823529 Yes
204 EU-NG-4 HEAL_07 Natural Gas Combustion Heaters   Point HEAL_M MMscf Natural Gas 0 4.70205882 No 0 0.02576471 Yes
205 EU-NG-4 HEAL_08 Natural Gas Combustion Heaters   Point HEAL_M MMscf Natural Gas 0 4.70205882 No 0 0.02576471 Yes
206 EU-NG-5 CUB3 - OX293-0-70 Natural Gas Combustion TMXW   Point TMXW_01 MMscf Natural Gas 3.790354 9.01764706 Yes 0.02470588 0.02470588 Yes
207 EU-NG-5 PUB1A-OX293-0-70 Natural Gas Combustion TMXW   Point TMXW_02 MMscf Natural Gas 5.954333 9.01764706 Yes 0.02470588 0.02470588 Yes
208 EU-NG-5 PUB1B-OX293-0-70 Natural Gas Combustion TMXW   Point TMXW_03 MMscf Natural Gas Future Installation 9.01764706 Yes Future Installation 0.02470588 Yes
209 EU-NG-5 PUB1C-OX293-0-70 Natural Gas Combustion TMXW   Point TMXW_04 MMscf Natural Gas Future Installation 9.01764706 Yes Future Installation 0.02470588 Yes
210 EU-NG-5 PUB1D-OX293-0-70 Natural Gas Combustion TMXW   Point TMXW_05 MMscf Natural Gas Future Installation 9.01764706 Yes Future Installation 0.02470588 Yes
211 EU-NG-5 PUB1E-OX293-0-70 Natural Gas Combustion TMXW   Point TMXW_06 MMscf Natural Gas Future Installation 9.01764706 Yes Future Installation 0.02470588 Yes
212 EU-NG-5 PUB1F-OX293-0-70 Natural Gas Combustion TMXW   Point TMXW_07 MMscf Natural Gas Future Installation 9.01764706 Yes Future Installation 0.02470588 Yes
213 EU-NG-5 CUB2-OX293-0-70 Natural Gas Combustion TMXW   Point TMXW_08 MMscf Natural Gas Future Installation 9.01764706 Yes Future Installation 0.02470588 Yes
214 EU-CT RAC4-CT114-1 Cooling Tower - Ronler Acres   Point CTC4_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
215 EU-CT RAC4-CT114-2 Cooling Tower - Ronler Acres   Point CTC4_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
216 EU-CT RAC4-CT114-3 Cooling Tower - Ronler Acres   Point CTC4_03 Hours hours of operation 8760 8760 Yes 24 24 Yes
217 EU-CT RAC4-CT114-4 Cooling Tower - Ronler Acres   Point CTC4_04 Hours hours of operation 8760 8760 Yes 24 24 Yes
218 EU-CT RAC4-CT114-5 Cooling Tower - Ronler Acres   Point CTC4_05 Hours hours of operation 8760 8760 Yes 24 24 Yes
219 EU-CT RAC4-CT114-6 Cooling Tower - Ronler Acres   Point CTC4_06 Hours hours of operation 8760 8760 Yes 24 24 Yes
220 EU-CT RAC4-CT114-7 Cooling Tower - Ronler Acres   Point CTC4_07 Hours hours of operation 8760 8760 Yes 24 24 Yes
221 EU-CT RAC4-CT114-8 Cooling Tower - Ronler Acres   Point CTC4_08 Hours hours of operation 8760 8760 Yes 24 24 Yes
222 EU-CT RAC4-CT114-9 Cooling Tower - Ronler Acres   Point CTC4_09 Hours hours of operation 8760 8760 Yes 24 24 Yes
223 EU-CT RAC4-CT114-10 Cooling Tower - Ronler Acres   Point CTC4_10 Hours hours of operation 8760 8760 Yes 24 24 Yes
224 EU-CT RAC4-CT114-11 Cooling Tower - Ronler Acres   Point CTC4_11 Hours hours of operation 8760 8760 Yes 24 24 Yes
225 EU-CT RAC4-CT114-12 Cooling Tower - Ronler Acres   Point CTC4_12 Hours hours of operation 8760 8760 Yes 24 24 Yes
226 EU-CT RAC4-CT114-13 Cooling Tower - Ronler Acres   Point CTC4_13 Hours hours of operation 8760 8760 Yes 24 24 Yes
227 EU-CT RAC4-CT114-14 Cooling Tower - Ronler Acres   Point CTC4_14 Hours hours of operation 8760 8760 Yes 24 24 Yes
228 EU-CT RAC4-CT114-15 Cooling Tower - Ronler Acres   Point CTC4_15 Hours hours of operation 8760 8760 Yes 24 24 Yes
229 EU-CT RAC4-CT114-16 Cooling Tower - Ronler Acres   Point CTC4_16 Hours hours of operation 8760 8760 Yes 24 24 Yes
230 EU-CT RAC4-CT114-17 Cooling Tower - Ronler Acres   Point CTC4_17 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
231 EU-CT RAC4-CT114-18 Cooling Tower - Ronler Acres   Point CTC4_18 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
232 EU-CT RAC4-CT114-19 Cooling Tower - Ronler Acres   Point CTC4_19 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
233 EU-CT RAC4-CT114-20 Cooling Tower - Ronler Acres   Point CTC4_20 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
234 EU-CT RAC5-CT115-1 Cooling Tower - Ronler Acres   Point CTC5_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
235 EU-CT RAC5-CT115-2 Cooling Tower - Ronler Acres   Point CTC5_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
236 EU-CT RAC5-CT115-3 Cooling Tower - Ronler Acres   Point CTC5_03 Hours hours of operation 8760 8760 Yes 24 24 Yes
237 EU-CT RAC5-CT115-4 Cooling Tower - Ronler Acres   Point CTC5_04 Hours hours of operation 8760 8760 Yes 24 24 Yes
238 EU-CT RAC5-CT115-5 Cooling Tower - Ronler Acres   Point CTC5_05 Hours hours of operation 8760 8760 Yes 24 24 Yes
239 EU-CT RAC5-CT115-6 Cooling Tower - Ronler Acres   Point CTC5_06 Hours hours of operation 8760 8760 Yes 24 24 Yes
240 EU-CT RAC5-CT115-7 Cooling Tower - Ronler Acres   Point CTC5_07 Hours hours of operation 8760 8760 Yes 24 24 Yes
241 EU-CT RAC5-CT115-8 Cooling Tower - Ronler Acres   Point CTC5_08 Hours hours of operation 8760 8760 Yes 24 24 Yes
242 EU-CT RAC5-CT115-9 Cooling Tower - Ronler Acres   Point CTC5_09 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
243 EU-CT RAC5-CT115-10 Cooling Tower - Ronler Acres   Point CTC5_10 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
244 EU-CT RAC5-CT115-11 Cooling Tower - Ronler Acres   Point CTC5_11 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
245 EU-CT RAC5-CT115-12 Cooling Tower - Ronler Acres   Point CTC5_12 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
246 EU-CT RAC5-CT115-13 Cooling Tower - Ronler Acres   Point CTC5_13 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
247 EU-CT RAC5-CT115-14 Cooling Tower - Ronler Acres   Point CTC5_14 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
248 EU-CT RAC5-CT115-15 Cooling Tower - Ronler Acres   Point CTC5_15 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
249 EU-CT RAC5-CT115-16 Cooling Tower - Ronler Acres   Point CTC5_16 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
250 EU-CT RAC5-CT115-17 Cooling Tower - Ronler Acres   Point CTC5_17 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
251 EU-CT CT-114-1-210 Cooling Tower - Ronler Acres   Point CTC3_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
252 EU-CT CT-114-2-210 Cooling Tower - Ronler Acres   Point CTC3_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
253 EU-CT CT-114-3-210 Cooling Tower - Ronler Acres   Point CTC3_03 Hours hours of operation 8760 8760 Yes 24 24 Yes
254 EU-CT CT-114-4-210 Cooling Tower - Ronler Acres   Point CTC3_04 Hours hours of operation 8760 8760 Yes 24 24 Yes
255 EU-CT CT-114-5-210 Cooling Tower - Ronler Acres   Point CTC3_05 Hours hours of operation 8760 8760 Yes 24 24 Yes
256 EU-CT CUB3-CT114-21-10 Cooling Tower - Ronler Acres   Point CTC3_06 Hours hours of operation 8760 8760 Yes 24 24 Yes
257 EU-CT CUB3-CT114-22-10 Cooling Tower - Ronler Acres   Point CTC3_07 Hours hours of operation 8760 8760 Yes 24 24 Yes
258 EU-CT CUB3-CT114-23-10 Cooling Tower - Ronler Acres   Point CTC3_08 Hours hours of operation 8760 8760 Yes 24 24 Yes
259 EU-CT CUB3-CT114-24-10 Cooling Tower - Ronler Acres   Point CTC3_09 Hours hours of operation 8760 8760 Yes 24 24 Yes
260 EU-CT CUB3-CT114-25-10 Cooling Tower - Ronler Acres   Point CTC3_10 Hours hours of operation 8760 8760 Yes 24 24 Yes
261 EU-CT CUB3-CT114-26-10 Cooling Tower - Ronler Acres   Point CTC3_11 Hours hours of operation 8760 8760 Yes 24 24 Yes
262 EU-CT RP1-CT114-1-200 Cooling Tower - Ronler Acres   Point CTRP1_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
263 EU-CT RP1-CT114-2-200 Cooling Tower - Ronler Acres   Point CTRP1_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
264 EU-CT RP1-CT114-3-00 Cooling Tower - Ronler Acres   Point CTRP1_03 Hours hours of operation 8760 8760 Yes 24 24 Yes
265 EU-CT CUB2-CT114-1-210 Cooling Tower - Ronler Acres   Point CTC2_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
266 EU-CT CUB2-CT114-2-210 Cooling Tower - Ronler Acres   Point CTC2_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
267 EU-CT CUB2-CT114-3-210 Cooling Tower - Ronler Acres   Point CTC2_03 Hours hours of operation 8760 8760 Yes 24 24 Yes
268 EU-CT CUB2-CT114-4-210 Cooling Tower - Ronler Acres   Point CTC2_04 Hours hours of operation 8760 8760 Yes 24 24 Yes
269 EU-CT CUB2-CT114-5-210 Cooling Tower - Ronler Acres   Point CTC2_05 Hours hours of operation 8760 8760 Yes 24 24 Yes
270 EU-CT CUB2-CT114-6-210 Cooling Tower - Ronler Acres   Point CTC2_06 Hours hours of operation 8760 8760 Yes 24 24 Yes
271 EU-CT CUB2-CT114-7-210 Cooling Tower - Ronler Acres   Point CTC2_07 Hours hours of operation 8760 8760 Yes 24 24 Yes
272 EU-CT CUB2-CT114-8-210 Cooling Tower - Ronler Acres   Point CTC2_08 Hours hours of operation 8760 8760 Yes 24 24 Yes
273 EU-CT CUB2-CT114-9-210 Cooling Tower - Ronler Acres   Point CTC2_09 Hours hours of operation 8760 8760 Yes 24 24 Yes
274 EU-CT CUB2-CT114-10-210 Cooling Tower - Ronler Acres   Point CTC2_10 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
275 EU-CT CUB2-CT114-11-10 Cooling Tower - Ronler Acres   Point CTC2_11 Hours hours of operation 8760 8760 Yes 24 24 Yes
276 EU-CT CUB2-CT114-12-10 Cooling Tower - Ronler Acres   Point CTC2_12 Hours hours of operation 8760 8760 Yes 24 24 Yes
277 EU-CT CUB2-CT114-13-10 Cooling Tower - Ronler Acres   Point CTC2_13 Hours hours of operation 8760 8760 Yes 24 24 Yes
278 EU-CT CUB2-CT114-14-10 Cooling Tower - Ronler Acres   Point CTC2_14 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
279 EU-CT F20-CT114-1-210 Cooling Tower - Ronler Acres   Point CTC1_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
280 EU-CT F20-CT114-2-210 Cooling Tower - Ronler Acres   Point CTC1_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
281 EU-CT F20-CT114-3-210 Cooling Tower - Ronler Acres   Point CTC1_03 Hours hours of operation 8760 8760 Yes 24 24 Yes
282 EU-CT F20-CT114-4-210 Cooling Tower - Ronler Acres   Point CTC1_04 Hours hours of operation 8760 8760 Yes 24 24 Yes
283 EU-CT F20-CT114-5-210 Cooling Tower - Ronler Acres   Point CTC1_05 Hours hours of operation 8760 8760 Yes 24 24 Yes
284 EU-CT F20-CT114-6-210 Cooling Tower - Ronler Acres   Point CTC1_06 Hours hours of operation 8760 8760 Yes 24 24 Yes
285 EU-CT F20-CT114-7-210 Cooling Tower - Ronler Acres   Point CTC1_07 Hours hours of operation 8760 8760 Yes 24 24 Yes
286 EU-CT F20-CT114-8-210 Cooling Tower - Ronler Acres   Point CTC1_08 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
287 EU-CT F20-CT114-9-210 Cooling Tower - Ronler Acres   Point CTC1_09 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
288 EU-CT F20-CT114-10-210 Cooling Tower - Ronler Acres   Point CTC1_10 Hours hours of operation 8760 8760 Yes 24 24 Yes
289 EU-CT F20-CT114-11-210 Cooling Tower - Ronler Acres   Point CTC1_11 Hours hours of operation 8760 8760 Yes 24 24 Yes
290 EU-CT N2-CT114-1 Cooling Tower - Ronler Acres   Point CTN2_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
291 EU-CT N2-CT114-2 Cooling Tower - Ronler Acres   Point CTN2_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
292 EU-CT N2-CT114-3 Cooling Tower - Ronler Acres   Point CTN2_03 Hours hours of operation 8760 8760 Yes 24 24 Yes
293 EU-CT RACB3-CT-114-1-35 Cooling Tower - Ronler Acres   Point CTCB_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
294 EU-CT RACB3-CT-114-2-35 Cooling Tower - Ronler Acres   Point CTCB_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
295 EU-CT RACB3-CT-114-3-35 Cooling Tower - Ronler Acres   Point CTCB_03 Hours hours of operation 8760 8760 Yes 24 24 Yes
296 EU-CT AL4-CHW-CT2 Cooling Tower - Aloha   Point CTA4_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
297 EU-CT AL4-CHW-CT3 Cooling Tower - Aloha   Point CTA4_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
298 EU-CT F15-CT29-1-1 Cooling Tower - Aloha   Point CTF15_01 Hours hours of operation 8760 8760 Yes 24 24 Yes
299 EU-CT F15-CT29-1-2 Cooling Tower - Aloha   Point CTF15_02 Hours hours of operation 8760 8760 Yes 24 24 Yes
300 EU-CT F15-CT29-1-3 Cooling Tower - Aloha   Point CTF15_03 Hours hours of operation 8760 8760 Yes 24 24 Yes
301 EU-CT F15-CT29-1-4 Cooling Tower - Aloha   Point CTF15_04 Hours hours of operation 8760 8760 Yes 24 24 Yes
302 EU-CT F15-CT29-1-5 Cooling Tower - Aloha   Point CTF15_05 Hours hours of operation 8760 8760 Yes 24 24 Yes
303 EU-CT F15-CT29-1-6-1 Cooling Tower - Aloha   Point CTF15_06 Hours hours of operation 8760 8760 Yes 24 24 Yes
304 EU-CT RA5-CT114-1 Cooling Tower - Ronler Acres   Point CTR5_01 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
305 EU-CT RA6-CT114-1 Cooling Tower - Ronler Acres   Point CTR6_01 Hours hours of operation Future Installation 8760 Yes Future Installation 24 Yes
306 EU-CT RA4-CT113-1-10 Cooling Tower - No TACs                      
307 EU-CT RA4-CT113-2-10 Cooling Tower - No TACs                      
308 EU-CT RA4-CT113-3-10 Cooling Tower - No TACs                      
309 EU-CT RA4-CT113-4-10 Cooling Tower - No TACs                      
310 EU-CT RA4-CT113-5-10 Cooling Tower - No TACs                      
311 EU-CT RA4-CT113-6-10 Cooling Tower - No TACs                      
312 EU-CT RAWTR1-CH918-1-11 WATR Process Equipment - No TACs                      
313 EU-CT RAWTR1-CH918-2-11 WATR Process Equipment - No TACs                      
314 EU-CT RAWTR1-CH918-3-11 WATR Process Equipment - No TACs                      
315 EU-CT RAWTR1-CH918-4-11 WATR Process Equipment - No TACs                      
316 EU-CT RAWTR1-CH918-5-11 WATR Process Equipment - No TACs                      
317 EU-CT RAWTR1-CH918-6-11 WATR Process Equipment - No TACs                      
318 EU-CT RAWTR1-CH918-7-11 WATR Process Equipment - No TACs                      
319 EU-CT RAWTR1-CH918-8-11 WATR Process Equipment - No TACs                      
320 EU-CT RAWTR1-CH918-9-11 WATR Process Equipment - No TACs                      
321 EU-CT RAWTR1-CH918-10-11 WATR Process Equipment - No TACs                      
322 EU-CT RAWTR1-CH918-11-11 WATR Process Equipment - No TACs                      
323 EU-CT RAWTR1-CH918-12-11 WATR Process Equipment - No TACs                      

2. TEUs & Activities - EF

  A B C D E F G H I J K L M N
1 AQ520 Form - Version 2.0                        
2 Intel Corporation (Aloha / Ronler Acres)                        
3 Source No. 34-2681-ST-02                        
4 Submitted on 11/04/2025                        
6 Toxics Emissions Unit (TEU) Information Toxic Air Contaminant (TAC) Information Emission Factor (EF) Information Calculated Emissions
- Requested PTE
7 Capture Efficiency (CE) Destruction/Removal Efficiency (DRE) EF Includes EF Value Reference/Notes Annual [lb/year] Max Daily [lb/day]
8 Toxics Emissions Unit (TEU) ID Toxics Emissions
Sub-Unit (TESU) ID		 CASRN or DEQ ID Toxic Air Contaminant (TAC) Name CE? DRE? Annual Max Daily Units
9 EU-NG-1 RA1-MECH-B01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00037101 0.00000339
10 EU-NG-1 RA1-MECH-B01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00816226 0.00007454
11 EU-NG-1 RA1-MECH-B01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002226 0.0000002
12 EU-NG-1 RA1-MECH-B01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00204056 0.00001864
13 EU-NG-1 RA1-MECH-B01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00010388 0.00000095
14 EU-NG-1 RA1-MECH-B01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00015582 0.00000142
15 EU-NG-1 RA1-MECH-B01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0015768 0.0000144
16 EU-NG-1 RA1-MECH-B01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00092753 0.00000847
17 EU-NG-1 RA1-MECH-B01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00070492 0.00000644
18 EU-NG-1 RA1-MECH-B01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00048232 0.0000044
19 EU-NG-1 RA1-MECH-B01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00389562 0.00003558
20 EU-NG-1 RA1-MECH-B01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004452 0.00000041
21 EU-NG-1 RA1-MECH-B01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00426664 0.00003896
22 EU-NG-1 RA1-MECH-B01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05379671 0.00049129
23 EU-NG-1 RA1-MECH-B01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00797675 0.00007285
24 EU-NG-1 RA1-MECH-B01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00500866 0.00004574
25 EU-NG-1 RA1-MECH-B01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01484047 0.00013553
26 EU-NG-1 RA1-MECH-B01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01762306 0.00016094
27 EU-NG-1 RA1-MECH-B01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.031536 0.000288
28 EU-NG-1 RA1-MECH-B01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01168687 0.00010673
29 EU-NG-1 RA1-MECH-B01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06789515 0.00062005
30 EU-NG-1 RA1-MECH-B01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0504576 0.0004608
31 EU-NG-1 RA1-MECH-B01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.93618824 0.05421176
32 EU-NG-1 RA1-MECH-B01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00306085 0.00002795
33 EU-NG-1 RA1-MECH-B01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00018551 0.00000169
34 EU-NG-1 RA1-MECH-B01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.85524433 0.01694287
35 EU-NG-1 RA1-MECH-B01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00055652 0.00000508
36 EU-NG-1 RA1-MECH-B02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000471
37 EU-NG-1 RA1-MECH-B02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01133647 0.00010353
38 EU-NG-1 RA1-MECH-B02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003092 0.00000028
39 EU-NG-1 RA1-MECH-B02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00283412 0.00002588
40 EU-NG-1 RA1-MECH-B02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00014428 0.00000132
41 EU-NG-1 RA1-MECH-B02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021642 0.00000198
42 EU-NG-1 RA1-MECH-B02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00219 0.00002
43 EU-NG-1 RA1-MECH-B02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00128824 0.00001176
44 EU-NG-1 RA1-MECH-B02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00097906 0.00000894
45 EU-NG-1 RA1-MECH-B02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00066988 0.00000612
46 EU-NG-1 RA1-MECH-B02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00004941
47 EU-NG-1 RA1-MECH-B02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006184 0.00000056
48 EU-NG-1 RA1-MECH-B02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00592588 0.00005412
49 EU-NG-1 RA1-MECH-B02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07471765 0.00068235
50 EU-NG-1 RA1-MECH-B02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01107882 0.00010118
51 EU-NG-1 RA1-MECH-B02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00695647 0.00006353
52 EU-NG-1 RA1-MECH-B02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00018824
53 EU-NG-1 RA1-MECH-B02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02447647 0.00022353
54 EU-NG-1 RA1-MECH-B02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0438 0.0004
55 EU-NG-1 RA1-MECH-B02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01623176 0.00014824
56 EU-NG-1 RA1-MECH-B02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.09429882 0.00086118
57 EU-NG-1 RA1-MECH-B02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07008 0.00064
58 EU-NG-1 RA1-MECH-B02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.24470588 0.07529412
59 EU-NG-1 RA1-MECH-B02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00425118 0.00003882
60 EU-NG-1 RA1-MECH-B02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000235
61 EU-NG-1 RA1-MECH-B02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.57672824 0.02353176
62 EU-NG-1 RA1-MECH-B02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00077294 0.00000706
63 EU-NG-1 RA4-BLR152-2-30 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103007 0.00000941
64 EU-NG-1 RA4-BLR152-2-30 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0226616 0.00020696
65 EU-NG-1 RA4-BLR152-2-30 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000618 0.00000056
66 EU-NG-1 RA4-BLR152-2-30 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0056654 0.00005174
67 EU-NG-1 RA4-BLR152-2-30 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028842 0.00000263
68 EU-NG-1 RA4-BLR152-2-30 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043263 0.00000395
69 EU-NG-1 RA4-BLR152-2-30 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00437781 0.00003998
70 EU-NG-1 RA4-BLR152-2-30 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257518 0.00002352
71 EU-NG-1 RA4-BLR152-2-30 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195714 0.00001787
72 EU-NG-1 RA4-BLR152-2-30 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133909 0.00001223
73 EU-NG-1 RA4-BLR152-2-30 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01081577 0.00009877
74 EU-NG-1 RA4-BLR152-2-30 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012361 0.00000113
75 EU-NG-1 RA4-BLR152-2-30 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01184584 0.00010818
76 EU-NG-1 RA4-BLR152-2-30 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14936058 0.00136402
77 EU-NG-1 RA4-BLR152-2-30 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02214657 0.00020225
78 EU-NG-1 RA4-BLR152-2-30 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01390598 0.000127
79 EU-NG-1 RA4-BLR152-2-30 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04120292 0.00037628
80 EU-NG-1 RA4-BLR152-2-30 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04892846 0.00044684
81 EU-NG-1 RA4-BLR152-2-30 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0875562 0.0007996
82 EU-NG-1 RA4-BLR152-2-30 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0324473 0.00029632
83 EU-NG-1 RA4-BLR152-2-30 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18850335 0.00172149
84 EU-NG-1 RA4-BLR152-2-30 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14008992 0.00127936
85 EU-NG-1 RA4-BLR152-2-30 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48116706 0.15051294
86 EU-NG-1 RA4-BLR152-2-30 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0084981 0.00007761
87 EU-NG-1 RA4-BLR152-2-30 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051504 0.0000047
88 EU-NG-1 RA4-BLR152-2-30 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15087974 0.04704
89 EU-NG-1 RA4-BLR152-2-30 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154511 0.00001411
90 EU-NG-1 RA4-BLR152-1-30 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103007 0.00000941
91 EU-NG-1 RA4-BLR152-1-30 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0226616 0.00020696
92 EU-NG-1 RA4-BLR152-1-30 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000618 0.00000056
93 EU-NG-1 RA4-BLR152-1-30 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0056654 0.00005174
94 EU-NG-1 RA4-BLR152-1-30 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028842 0.00000263
95 EU-NG-1 RA4-BLR152-1-30 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043263 0.00000395
96 EU-NG-1 RA4-BLR152-1-30 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00437781 0.00003998
97 EU-NG-1 RA4-BLR152-1-30 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257518 0.00002352
98 EU-NG-1 RA4-BLR152-1-30 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195714 0.00001787
99 EU-NG-1 RA4-BLR152-1-30 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133909 0.00001223
100 EU-NG-1 RA4-BLR152-1-30 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01081577 0.00009877
101 EU-NG-1 RA4-BLR152-1-30 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012361 0.00000113
102 EU-NG-1 RA4-BLR152-1-30 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01184584 0.00010818
103 EU-NG-1 RA4-BLR152-1-30 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14936058 0.00136402
104 EU-NG-1 RA4-BLR152-1-30 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02214657 0.00020225
105 EU-NG-1 RA4-BLR152-1-30 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01390598 0.000127
106 EU-NG-1 RA4-BLR152-1-30 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04120292 0.00037628
107 EU-NG-1 RA4-BLR152-1-30 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04892846 0.00044684
108 EU-NG-1 RA4-BLR152-1-30 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0875562 0.0007996
109 EU-NG-1 RA4-BLR152-1-30 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0324473 0.00029632
110 EU-NG-1 RA4-BLR152-1-30 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18850335 0.00172149
111 EU-NG-1 RA4-BLR152-1-30 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14008992 0.00127936
112 EU-NG-1 RA4-BLR152-1-30 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48116706 0.15051294
113 EU-NG-1 RA4-BLR152-1-30 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0084981 0.00007761
114 EU-NG-1 RA4-BLR152-1-30 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051504 0.0000047
115 EU-NG-1 RA4-BLR152-1-30 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15087974 0.04704
116 EU-NG-1 RA4-BLR152-1-30 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154511 0.00001411
117 EU-NG-1 RA4-BLR117-2-30 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103007 0.00000941
118 EU-NG-1 RA4-BLR117-2-30 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0226616 0.00020696
119 EU-NG-1 RA4-BLR117-2-30 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000618 0.00000056
120 EU-NG-1 RA4-BLR117-2-30 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0056654 0.00005174
121 EU-NG-1 RA4-BLR117-2-30 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028842 0.00000263
122 EU-NG-1 RA4-BLR117-2-30 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043263 0.00000395
123 EU-NG-1 RA4-BLR117-2-30 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00437781 0.00003998
124 EU-NG-1 RA4-BLR117-2-30 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257518 0.00002352
125 EU-NG-1 RA4-BLR117-2-30 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195714 0.00001787
126 EU-NG-1 RA4-BLR117-2-30 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133909 0.00001223
127 EU-NG-1 RA4-BLR117-2-30 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01081577 0.00009877
128 EU-NG-1 RA4-BLR117-2-30 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012361 0.00000113
129 EU-NG-1 RA4-BLR117-2-30 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01184584 0.00010818
130 EU-NG-1 RA4-BLR117-2-30 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14936058 0.00136402
131 EU-NG-1 RA4-BLR117-2-30 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02214657 0.00020225
132 EU-NG-1 RA4-BLR117-2-30 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01390598 0.000127
133 EU-NG-1 RA4-BLR117-2-30 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04120292 0.00037628
134 EU-NG-1 RA4-BLR117-2-30 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04892846 0.00044684
135 EU-NG-1 RA4-BLR117-2-30 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0875562 0.0007996
136 EU-NG-1 RA4-BLR117-2-30 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0324473 0.00029632
137 EU-NG-1 RA4-BLR117-2-30 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18850335 0.00172149
138 EU-NG-1 RA4-BLR117-2-30 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14008992 0.00127936
139 EU-NG-1 RA4-BLR117-2-30 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48116706 0.15051294
140 EU-NG-1 RA4-BLR117-2-30 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0084981 0.00007761
141 EU-NG-1 RA4-BLR117-2-30 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051504 0.0000047
142 EU-NG-1 RA4-BLR117-2-30 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15087974 0.04704
143 EU-NG-1 RA4-BLR117-2-30 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154511 0.00001411
144 EU-NG-1 RA4-BLR117-1-30 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103007 0.00000941
145 EU-NG-1 RA4-BLR117-1-30 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0226616 0.00020696
146 EU-NG-1 RA4-BLR117-1-30 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000618 0.00000056
147 EU-NG-1 RA4-BLR117-1-30 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0056654 0.00005174
148 EU-NG-1 RA4-BLR117-1-30 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028842 0.00000263
149 EU-NG-1 RA4-BLR117-1-30 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043263 0.00000395
150 EU-NG-1 RA4-BLR117-1-30 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00437781 0.00003998
151 EU-NG-1 RA4-BLR117-1-30 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257518 0.00002352
152 EU-NG-1 RA4-BLR117-1-30 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195714 0.00001787
153 EU-NG-1 RA4-BLR117-1-30 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133909 0.00001223
154 EU-NG-1 RA4-BLR117-1-30 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01081577 0.00009877
155 EU-NG-1 RA4-BLR117-1-30 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012361 0.00000113
156 EU-NG-1 RA4-BLR117-1-30 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01184584 0.00010818
157 EU-NG-1 RA4-BLR117-1-30 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14936058 0.00136402
158 EU-NG-1 RA4-BLR117-1-30 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02214657 0.00020225
159 EU-NG-1 RA4-BLR117-1-30 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01390598 0.000127
160 EU-NG-1 RA4-BLR117-1-30 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04120292 0.00037628
161 EU-NG-1 RA4-BLR117-1-30 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04892846 0.00044684
162 EU-NG-1 RA4-BLR117-1-30 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0875562 0.0007996
163 EU-NG-1 RA4-BLR117-1-30 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0324473 0.00029632
164 EU-NG-1 RA4-BLR117-1-30 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18850335 0.00172149
165 EU-NG-1 RA4-BLR117-1-30 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14008992 0.00127936
166 EU-NG-1 RA4-BLR117-1-30 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48116706 0.15051294
167 EU-NG-1 RA4-BLR117-1-30 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0084981 0.00007761
168 EU-NG-1 RA4-BLR117-1-30 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051504 0.0000047
169 EU-NG-1 RA4-BLR117-1-30 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15087974 0.04704
170 EU-NG-1 RA4-BLR117-1-30 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154511 0.00001411
171 EU-NG-1 BLR-115-1-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00420738 0.00003842
172 EU-NG-1 BLR-115-1-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.09256228 0.00084532
173 EU-NG-1 BLR-115-1-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025244 0.00000231
174 EU-NG-1 BLR-115-1-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02314057 0.00021133
175 EU-NG-1 BLR-115-1-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00117807 0.00001076
176 EU-NG-1 BLR-115-1-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0017671 0.00001614
177 EU-NG-1 BLR-115-1-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01788135 0.0001633
178 EU-NG-1 BLR-115-1-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01051844 0.00009606
179 EU-NG-1 BLR-115-1-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00799402 0.000073
180 EU-NG-1 BLR-115-1-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00546959 0.00004995
181 EU-NG-1 BLR-115-1-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04417745 0.00040345
182 EU-NG-1 BLR-115-1-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00050489 0.00000461
183 EU-NG-1 BLR-115-1-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04838483 0.00044187
184 EU-NG-1 BLR-115-1-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.61006959 0.00557141
185 EU-NG-1 BLR-115-1-210 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.09045859 0.00082611
186 EU-NG-1 BLR-115-1-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05679958 0.00051872
187 EU-NG-1 BLR-115-1-210 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16829506 0.00153694
188 EU-NG-1 BLR-115-1-210 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.19985038 0.00182512
189 EU-NG-1 BLR-115-1-210 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.357627 0.003266
190 EU-NG-1 BLR-115-1-210 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13253236 0.00121034
191 EU-NG-1 BLR-115-1-210 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.76994989 0.00703151
192 EU-NG-1 BLR-115-1-210 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.5722032 0.0052256
193 EU-NG-1 BLR-115-1-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 67.31802353 0.61477647
194 EU-NG-1 BLR-115-1-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03471086 0.00031699
195 EU-NG-1 BLR-115-1-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00210369 0.00001921
196 EU-NG-1 BLR-115-1-210 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 21.03898604 0.19213686
197 EU-NG-1 BLR-115-1-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00631106 0.00005764
198 EU-NG-1 RA2-BLR115-1-300 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00216424 0.00001976
199 EU-NG-1 RA2-BLR115-1-300 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04761318 0.00043482
200 EU-NG-1 RA2-BLR115-1-300 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012985 0.00000119
201 EU-NG-1 RA2-BLR115-1-300 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01190329 0.00010871
202 EU-NG-1 RA2-BLR115-1-300 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00060599 0.00000553
203 EU-NG-1 RA2-BLR115-1-300 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090898 0.0000083
204 EU-NG-1 RA2-BLR115-1-300 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009198 0.000084
205 EU-NG-1 RA2-BLR115-1-300 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00004941
206 EU-NG-1 RA2-BLR115-1-300 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00411205 0.00003755
207 EU-NG-1 RA2-BLR115-1-300 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00281351 0.00002569
208 EU-NG-1 RA2-BLR115-1-300 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02272447 0.00020753
209 EU-NG-1 RA2-BLR115-1-300 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025971 0.00000237
210 EU-NG-1 RA2-BLR115-1-300 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02488871 0.00022729
211 EU-NG-1 RA2-BLR115-1-300 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31381412 0.00286588
212 EU-NG-1 RA2-BLR115-1-300 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04653106 0.00042494
213 EU-NG-1 RA2-BLR115-1-300 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02921718 0.00026682
214 EU-NG-1 RA2-BLR115-1-300 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08656941 0.00079059
215 EU-NG-1 RA2-BLR115-1-300 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10280118 0.00093882
216 EU-NG-1 RA2-BLR115-1-300 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18396 0.00168
217 EU-NG-1 RA2-BLR115-1-300 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06817341 0.00062259
218 EU-NG-1 RA2-BLR115-1-300 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.39605506 0.00361694
219 EU-NG-1 RA2-BLR115-1-300 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.294336 0.002688
220 EU-NG-1 RA2-BLR115-1-300 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 34.62776471 0.31623529
221 EU-NG-1 RA2-BLR115-1-300 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01785494 0.00016306
222 EU-NG-1 RA2-BLR115-1-300 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00108212 0.00000988
223 EU-NG-1 RA2-BLR115-1-300 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 10.82225859 0.09883341
224 EU-NG-1 RA2-BLR115-1-300 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324635 0.00002965
225 EU-NG-1 RA2-BLR115-2-300 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00216424 0.00001976
226 EU-NG-1 RA2-BLR115-2-300 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04761318 0.00043482
227 EU-NG-1 RA2-BLR115-2-300 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012985 0.00000119
228 EU-NG-1 RA2-BLR115-2-300 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01190329 0.00010871
229 EU-NG-1 RA2-BLR115-2-300 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00060599 0.00000553
230 EU-NG-1 RA2-BLR115-2-300 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090898 0.0000083
231 EU-NG-1 RA2-BLR115-2-300 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009198 0.000084
232 EU-NG-1 RA2-BLR115-2-300 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00004941
233 EU-NG-1 RA2-BLR115-2-300 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00411205 0.00003755
234 EU-NG-1 RA2-BLR115-2-300 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00281351 0.00002569
235 EU-NG-1 RA2-BLR115-2-300 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02272447 0.00020753
236 EU-NG-1 RA2-BLR115-2-300 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025971 0.00000237
237 EU-NG-1 RA2-BLR115-2-300 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02488871 0.00022729
238 EU-NG-1 RA2-BLR115-2-300 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31381412 0.00286588
239 EU-NG-1 RA2-BLR115-2-300 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04653106 0.00042494
240 EU-NG-1 RA2-BLR115-2-300 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02921718 0.00026682
241 EU-NG-1 RA2-BLR115-2-300 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08656941 0.00079059
242 EU-NG-1 RA2-BLR115-2-300 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10280118 0.00093882
243 EU-NG-1 RA2-BLR115-2-300 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18396 0.00168
244 EU-NG-1 RA2-BLR115-2-300 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06817341 0.00062259
245 EU-NG-1 RA2-BLR115-2-300 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.39605506 0.00361694
246 EU-NG-1 RA2-BLR115-2-300 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.294336 0.002688
247 EU-NG-1 RA2-BLR115-2-300 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 34.62776471 0.31623529
248 EU-NG-1 RA2-BLR115-2-300 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01785494 0.00016306
249 EU-NG-1 RA2-BLR115-2-300 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00108212 0.00000988
250 EU-NG-1 RA2-BLR115-2-300 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 10.82225859 0.09883341
251 EU-NG-1 RA2-BLR115-2-300 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324635 0.00002965
252 EU-NG-1 RS4-BLR115-1 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103059 0.00000941
253 EU-NG-1 RS4-BLR115-1 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02267294 0.00020706
254 EU-NG-1 RS4-BLR115-1 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006184 0.00000056
255 EU-NG-1 RS4-BLR115-1 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00005176
256 EU-NG-1 RS4-BLR115-1 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028856 0.00000264
257 EU-NG-1 RS4-BLR115-1 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043285 0.00000395
258 EU-NG-1 RS4-BLR115-1 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00438 0.00004
259 EU-NG-1 RS4-BLR115-1 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257647 0.00002353
260 EU-NG-1 RS4-BLR115-1 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195812 0.00001788
261 EU-NG-1 RS4-BLR115-1 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133976 0.00001224
262 EU-NG-1 RS4-BLR115-1 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01082118 0.00009882
263 EU-NG-1 RS4-BLR115-1 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012367 0.00000113
264 EU-NG-1 RS4-BLR115-1 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01185176 0.00010824
265 EU-NG-1 RS4-BLR115-1 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14943529 0.00136471
266 EU-NG-1 RS4-BLR115-1 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02215765 0.00020235
267 EU-NG-1 RS4-BLR115-1 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01391294 0.00012706
268 EU-NG-1 RS4-BLR115-1 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04122353 0.00037647
269 EU-NG-1 RS4-BLR115-1 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04895294 0.00044706
270 EU-NG-1 RS4-BLR115-1 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0876 0.0008
271 EU-NG-1 RS4-BLR115-1 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03246353 0.00029647
272 EU-NG-1 RS4-BLR115-1 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18859765 0.00172235
273 EU-NG-1 RS4-BLR115-1 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14016 0.00128
274 EU-NG-1 RS4-BLR115-1 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48941176 0.15058824
275 EU-NG-1 RS4-BLR115-1 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00850235 0.00007765
276 EU-NG-1 RS4-BLR115-1 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000471
277 EU-NG-1 RS4-BLR115-1 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15345647 0.04706353
278 EU-NG-1 RS4-BLR115-1 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154588 0.00001412
279 EU-NG-1 RS4-BLR115-2 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103059 0.00000941
280 EU-NG-1 RS4-BLR115-2 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02267294 0.00020706
281 EU-NG-1 RS4-BLR115-2 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006184 0.00000056
282 EU-NG-1 RS4-BLR115-2 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00005176
283 EU-NG-1 RS4-BLR115-2 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028856 0.00000264
284 EU-NG-1 RS4-BLR115-2 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043285 0.00000395
285 EU-NG-1 RS4-BLR115-2 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00438 0.00004
286 EU-NG-1 RS4-BLR115-2 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257647 0.00002353
287 EU-NG-1 RS4-BLR115-2 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195812 0.00001788
288 EU-NG-1 RS4-BLR115-2 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133976 0.00001224
289 EU-NG-1 RS4-BLR115-2 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01082118 0.00009882
290 EU-NG-1 RS4-BLR115-2 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012367 0.00000113
291 EU-NG-1 RS4-BLR115-2 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01185176 0.00010824
292 EU-NG-1 RS4-BLR115-2 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14943529 0.00136471
293 EU-NG-1 RS4-BLR115-2 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02215765 0.00020235
294 EU-NG-1 RS4-BLR115-2 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01391294 0.00012706
295 EU-NG-1 RS4-BLR115-2 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04122353 0.00037647
296 EU-NG-1 RS4-BLR115-2 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04895294 0.00044706
297 EU-NG-1 RS4-BLR115-2 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0876 0.0008
298 EU-NG-1 RS4-BLR115-2 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03246353 0.00029647
299 EU-NG-1 RS4-BLR115-2 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18859765 0.00172235
300 EU-NG-1 RS4-BLR115-2 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14016 0.00128
301 EU-NG-1 RS4-BLR115-2 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48941176 0.15058824
302 EU-NG-1 RS4-BLR115-2 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00850235 0.00007765
303 EU-NG-1 RS4-BLR115-2 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000471
304 EU-NG-1 RS4-BLR115-2 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15345647 0.04706353
305 EU-NG-1 RS4-BLR115-2 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154588 0.00001412
306 EU-NG-1 RS4-BLR115-3 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000235
307 EU-NG-1 RS4-BLR115-3 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00005176
308 EU-NG-1 RS4-BLR115-3 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001546 0.00000014
309 EU-NG-1 RS4-BLR115-3 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00001294
310 EU-NG-1 RS4-BLR115-3 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00007214 0.00000066
311 EU-NG-1 RS4-BLR115-3 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.00000099
312 EU-NG-1 RS4-BLR115-3 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.00001
313 EU-NG-1 RS4-BLR115-3 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00064412 0.00000588
314 EU-NG-1 RS4-BLR115-3 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00048953 0.00000447
315 EU-NG-1 RS4-BLR115-3 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00033494 0.00000306
316 EU-NG-1 RS4-BLR115-3 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00002471
317 EU-NG-1 RS4-BLR115-3 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003092 0.00000028
318 EU-NG-1 RS4-BLR115-3 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00296294 0.00002706
319 EU-NG-1 RS4-BLR115-3 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03735882 0.00034118
320 EU-NG-1 RS4-BLR115-3 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00553941 0.00005059
321 EU-NG-1 RS4-BLR115-3 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00347824 0.00003176
322 EU-NG-1 RS4-BLR115-3 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01030588 0.00009412
323 EU-NG-1 RS4-BLR115-3 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01223824 0.00011176
324 EU-NG-1 RS4-BLR115-3 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0219 0.0002
325 EU-NG-1 RS4-BLR115-3 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00811588 0.00007412
326 EU-NG-1 RS4-BLR115-3 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04714941 0.00043059
327 EU-NG-1 RS4-BLR115-3 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03504 0.00032
328 EU-NG-1 RS4-BLR115-3 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.12235294 0.03764706
329 EU-NG-1 RS4-BLR115-3 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00212559 0.00001941
330 EU-NG-1 RS4-BLR115-3 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012882 0.00000118
331 EU-NG-1 RS4-BLR115-3 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.28836412 0.01176588
332 EU-NG-1 RS4-BLR115-3 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00038647 0.00000353
333 EU-NG-1 RS6-BLR115-1 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103059 0.00000941
334 EU-NG-1 RS6-BLR115-1 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02267294 0.00020706
335 EU-NG-1 RS6-BLR115-1 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006184 0.00000056
336 EU-NG-1 RS6-BLR115-1 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00005176
337 EU-NG-1 RS6-BLR115-1 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028856 0.00000264
338 EU-NG-1 RS6-BLR115-1 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043285 0.00000395
339 EU-NG-1 RS6-BLR115-1 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00438 0.00004
340 EU-NG-1 RS6-BLR115-1 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257647 0.00002353
341 EU-NG-1 RS6-BLR115-1 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195812 0.00001788
342 EU-NG-1 RS6-BLR115-1 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133976 0.00001224
343 EU-NG-1 RS6-BLR115-1 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01082118 0.00009882
344 EU-NG-1 RS6-BLR115-1 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012367 0.00000113
345 EU-NG-1 RS6-BLR115-1 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01185176 0.00010824
346 EU-NG-1 RS6-BLR115-1 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14943529 0.00136471
347 EU-NG-1 RS6-BLR115-1 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02215765 0.00020235
348 EU-NG-1 RS6-BLR115-1 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01391294 0.00012706
349 EU-NG-1 RS6-BLR115-1 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04122353 0.00037647
350 EU-NG-1 RS6-BLR115-1 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04895294 0.00044706
351 EU-NG-1 RS6-BLR115-1 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0876 0.0008
352 EU-NG-1 RS6-BLR115-1 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03246353 0.00029647
353 EU-NG-1 RS6-BLR115-1 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18859765 0.00172235
354 EU-NG-1 RS6-BLR115-1 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14016 0.00128
355 EU-NG-1 RS6-BLR115-1 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48941176 0.15058824
356 EU-NG-1 RS6-BLR115-1 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00850235 0.00007765
357 EU-NG-1 RS6-BLR115-1 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000471
358 EU-NG-1 RS6-BLR115-1 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15345647 0.04706353
359 EU-NG-1 RS6-BLR115-1 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154588 0.00001412
360 EU-NG-1 RS6-BLR115-2 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103059 0.00000941
361 EU-NG-1 RS6-BLR115-2 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02267294 0.00020706
362 EU-NG-1 RS6-BLR115-2 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006184 0.00000056
363 EU-NG-1 RS6-BLR115-2 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00005176
364 EU-NG-1 RS6-BLR115-2 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028856 0.00000264
365 EU-NG-1 RS6-BLR115-2 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043285 0.00000395
366 EU-NG-1 RS6-BLR115-2 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00438 0.00004
367 EU-NG-1 RS6-BLR115-2 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257647 0.00002353
368 EU-NG-1 RS6-BLR115-2 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195812 0.00001788
369 EU-NG-1 RS6-BLR115-2 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133976 0.00001224
370 EU-NG-1 RS6-BLR115-2 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01082118 0.00009882
371 EU-NG-1 RS6-BLR115-2 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012367 0.00000113
372 EU-NG-1 RS6-BLR115-2 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01185176 0.00010824
373 EU-NG-1 RS6-BLR115-2 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14943529 0.00136471
374 EU-NG-1 RS6-BLR115-2 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02215765 0.00020235
375 EU-NG-1 RS6-BLR115-2 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01391294 0.00012706
376 EU-NG-1 RS6-BLR115-2 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04122353 0.00037647
377 EU-NG-1 RS6-BLR115-2 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04895294 0.00044706
378 EU-NG-1 RS6-BLR115-2 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0876 0.0008
379 EU-NG-1 RS6-BLR115-2 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03246353 0.00029647
380 EU-NG-1 RS6-BLR115-2 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18859765 0.00172235
381 EU-NG-1 RS6-BLR115-2 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14016 0.00128
382 EU-NG-1 RS6-BLR115-2 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48941176 0.15058824
383 EU-NG-1 RS6-BLR115-2 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00850235 0.00007765
384 EU-NG-1 RS6-BLR115-2 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000471
385 EU-NG-1 RS6-BLR115-2 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15345647 0.04706353
386 EU-NG-1 RS6-BLR115-2 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154588 0.00001412
387 EU-NG-1 RS6-BLR115-3 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000235
388 EU-NG-1 RS6-BLR115-3 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00005176
389 EU-NG-1 RS6-BLR115-3 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001546 0.00000014
390 EU-NG-1 RS6-BLR115-3 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00001294
391 EU-NG-1 RS6-BLR115-3 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00007214 0.00000066
392 EU-NG-1 RS6-BLR115-3 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.00000099
393 EU-NG-1 RS6-BLR115-3 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.00001
394 EU-NG-1 RS6-BLR115-3 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00064412 0.00000588
395 EU-NG-1 RS6-BLR115-3 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00048953 0.00000447
396 EU-NG-1 RS6-BLR115-3 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00033494 0.00000306
397 EU-NG-1 RS6-BLR115-3 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00002471
398 EU-NG-1 RS6-BLR115-3 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003092 0.00000028
399 EU-NG-1 RS6-BLR115-3 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00296294 0.00002706
400 EU-NG-1 RS6-BLR115-3 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03735882 0.00034118
401 EU-NG-1 RS6-BLR115-3 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00553941 0.00005059
402 EU-NG-1 RS6-BLR115-3 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00347824 0.00003176
403 EU-NG-1 RS6-BLR115-3 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01030588 0.00009412
404 EU-NG-1 RS6-BLR115-3 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01223824 0.00011176
405 EU-NG-1 RS6-BLR115-3 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0219 0.0002
406 EU-NG-1 RS6-BLR115-3 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00811588 0.00007412
407 EU-NG-1 RS6-BLR115-3 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04714941 0.00043059
408 EU-NG-1 RS6-BLR115-3 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03504 0.00032
409 EU-NG-1 RS6-BLR115-3 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.12235294 0.03764706
410 EU-NG-1 RS6-BLR115-3 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00212559 0.00001941
411 EU-NG-1 RS6-BLR115-3 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012882 0.00000118
412 EU-NG-1 RS6-BLR115-3 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.28836412 0.01176588
413 EU-NG-1 RS6-BLR115-3 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00038647 0.00000353
414 EU-NG-1 F15-HW35-3 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00030918 0.00000282
415 EU-NG-1 F15-HW35-3 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00680188 0.00006212
416 EU-NG-1 F15-HW35-3 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001855 0.00000017
417 EU-NG-1 F15-HW35-3 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170047 0.00001553
418 EU-NG-1 F15-HW35-3 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00008657 0.00000079
419 EU-NG-1 F15-HW35-3 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012985 0.00000119
420 EU-NG-1 F15-HW35-3 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001314 0.000012
421 EU-NG-1 F15-HW35-3 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00077294 0.00000706
422 EU-NG-1 F15-HW35-3 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00058744 0.00000536
423 EU-NG-1 F15-HW35-3 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00040193 0.00000367
424 EU-NG-1 F15-HW35-3 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324635 0.00002965
425 EU-NG-1 F15-HW35-3 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000371 0.00000034
426 EU-NG-1 F15-HW35-3 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00355553 0.00003247
427 EU-NG-1 F15-HW35-3 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04483059 0.00040941
428 EU-NG-1 F15-HW35-3 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00664729 0.00006071
429 EU-NG-1 F15-HW35-3 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00417388 0.00003812
430 EU-NG-1 F15-HW35-3 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01236706 0.00011294
431 EU-NG-1 F15-HW35-3 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01468588 0.00013412
432 EU-NG-1 F15-HW35-3 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02628 0.00024
433 EU-NG-1 F15-HW35-3 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00973906 0.00008894
434 EU-NG-1 F15-HW35-3 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05657929 0.00051671
435 EU-NG-1 F15-HW35-3 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.042048 0.000384
436 EU-NG-1 F15-HW35-3 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.94682353 0.04517647
437 EU-NG-1 F15-HW35-3 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00255071 0.00002329
438 EU-NG-1 F15-HW35-3 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00015459 0.00000141
439 EU-NG-1 F15-HW35-3 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.54603694 0.01411906
440 EU-NG-1 F15-HW35-3 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00046376 0.00000424
441 EU-NG-1 F15-HW35-4 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00030918 0.00000282
442 EU-NG-1 F15-HW35-4 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00680188 0.00006212
443 EU-NG-1 F15-HW35-4 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001855 0.00000017
444 EU-NG-1 F15-HW35-4 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170047 0.00001553
445 EU-NG-1 F15-HW35-4 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00008657 0.00000079
446 EU-NG-1 F15-HW35-4 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012985 0.00000119
447 EU-NG-1 F15-HW35-4 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001314 0.000012
448 EU-NG-1 F15-HW35-4 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00077294 0.00000706
449 EU-NG-1 F15-HW35-4 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00058744 0.00000536
450 EU-NG-1 F15-HW35-4 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00040193 0.00000367
451 EU-NG-1 F15-HW35-4 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324635 0.00002965
452 EU-NG-1 F15-HW35-4 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000371 0.00000034
453 EU-NG-1 F15-HW35-4 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00355553 0.00003247
454 EU-NG-1 F15-HW35-4 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04483059 0.00040941
455 EU-NG-1 F15-HW35-4 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00664729 0.00006071
456 EU-NG-1 F15-HW35-4 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00417388 0.00003812
457 EU-NG-1 F15-HW35-4 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01236706 0.00011294
458 EU-NG-1 F15-HW35-4 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01468588 0.00013412
459 EU-NG-1 F15-HW35-4 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02628 0.00024
460 EU-NG-1 F15-HW35-4 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00973906 0.00008894
461 EU-NG-1 F15-HW35-4 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05657929 0.00051671
462 EU-NG-1 F15-HW35-4 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.042048 0.000384
463 EU-NG-1 F15-HW35-4 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.94682353 0.04517647
464 EU-NG-1 F15-HW35-4 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00255071 0.00002329
465 EU-NG-1 F15-HW35-4 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00015459 0.00000141
466 EU-NG-1 F15-HW35-4 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.54603694 0.01411906
467 EU-NG-1 F15-HW35-4 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00046376 0.00000424
468 EU-NG-2 F20-BLR115-1-200 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01623176 0.00014824
469 EU-NG-2 F20-BLR115-1-200 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.35709882 0.00326118
470 EU-NG-2 F20-BLR115-1-200 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00097391 0.00000889
471 EU-NG-2 F20-BLR115-1-200 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08927471 0.00081529
472 EU-NG-2 F20-BLR115-1-200 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00454489 0.00004151
473 EU-NG-2 F20-BLR115-1-200 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00681734 0.00006226
474 EU-NG-2 F20-BLR115-1-200 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.068985 0.00063
475 EU-NG-2 F20-BLR115-1-200 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04057941 0.00037059
476 EU-NG-2 F20-BLR115-1-200 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03084035 0.00028165
477 EU-NG-2 F20-BLR115-1-200 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02110129 0.00019271
478 EU-NG-2 F20-BLR115-1-200 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17043353 0.00155647
479 EU-NG-2 F20-BLR115-1-200 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00194781 0.00001779
480 EU-NG-2 F20-BLR115-1-200 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.18666529 0.00170471
481 EU-NG-2 F20-BLR115-1-200 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.35360588 0.02149412
482 EU-NG-2 F20-BLR115-1-200 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.25159235 0.00229765
483 EU-NG-2 F20-BLR115-1-200 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21912882 0.00200118
484 EU-NG-2 F20-BLR115-1-200 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.47072118 0.00429882
485 EU-NG-2 F20-BLR115-1-200 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.55999588 0.00511412
486 EU-NG-2 F20-BLR115-1-200 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.99825353 0.00911647
487 EU-NG-2 F20-BLR115-1-200 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.37333059 0.00340941
488 EU-NG-2 F20-BLR115-1-200 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.15070882 0.01964118
489 EU-NG-2 F20-BLR115-1-200 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.59882882 0.01460118
490 EU-NG-2 F20-BLR115-1-200 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 259.70823529 2.37176471
491 EU-NG-2 F20-BLR115-1-200 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13391206 0.00122294
492 EU-NG-2 F20-BLR115-1-200 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00811588 0.00007412
493 EU-NG-2 F20-BLR115-1-200 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009739 0.00000089
494 EU-NG-2 F20-BLR115-1-200 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02434765 0.00022235
495 EU-NG-2 F20-BLR115-2-200 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01623176 0.00014824
496 EU-NG-2 F20-BLR115-2-200 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.35709882 0.00326118
497 EU-NG-2 F20-BLR115-2-200 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00097391 0.00000889
498 EU-NG-2 F20-BLR115-2-200 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08927471 0.00081529
499 EU-NG-2 F20-BLR115-2-200 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00454489 0.00004151
500 EU-NG-2 F20-BLR115-2-200 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00681734 0.00006226
501 EU-NG-2 F20-BLR115-2-200 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.068985 0.00063
502 EU-NG-2 F20-BLR115-2-200 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04057941 0.00037059
503 EU-NG-2 F20-BLR115-2-200 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03084035 0.00028165
504 EU-NG-2 F20-BLR115-2-200 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02110129 0.00019271
505 EU-NG-2 F20-BLR115-2-200 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17043353 0.00155647
506 EU-NG-2 F20-BLR115-2-200 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00194781 0.00001779
507 EU-NG-2 F20-BLR115-2-200 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.18666529 0.00170471
508 EU-NG-2 F20-BLR115-2-200 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.35360588 0.02149412
509 EU-NG-2 F20-BLR115-2-200 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.25159235 0.00229765
510 EU-NG-2 F20-BLR115-2-200 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21912882 0.00200118
511 EU-NG-2 F20-BLR115-2-200 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.47072118 0.00429882
512 EU-NG-2 F20-BLR115-2-200 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.55999588 0.00511412
513 EU-NG-2 F20-BLR115-2-200 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.99825353 0.00911647
514 EU-NG-2 F20-BLR115-2-200 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.37333059 0.00340941
515 EU-NG-2 F20-BLR115-2-200 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.15070882 0.01964118
516 EU-NG-2 F20-BLR115-2-200 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.59882882 0.01460118
517 EU-NG-2 F20-BLR115-2-200 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 259.70823529 2.37176471
518 EU-NG-2 F20-BLR115-2-200 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13391206 0.00122294
519 EU-NG-2 F20-BLR115-2-200 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00811588 0.00007412
520 EU-NG-2 F20-BLR115-2-200 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009739 0.00000089
521 EU-NG-2 F20-BLR115-2-200 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02434765 0.00022235
522 EU-NG-2 F20-BLR115-3-200 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01623176 0.00014824
523 EU-NG-2 F20-BLR115-3-200 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.35709882 0.00326118
524 EU-NG-2 F20-BLR115-3-200 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00097391 0.00000889
525 EU-NG-2 F20-BLR115-3-200 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08927471 0.00081529
526 EU-NG-2 F20-BLR115-3-200 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00454489 0.00004151
527 EU-NG-2 F20-BLR115-3-200 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00681734 0.00006226
528 EU-NG-2 F20-BLR115-3-200 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.068985 0.00063
529 EU-NG-2 F20-BLR115-3-200 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04057941 0.00037059
530 EU-NG-2 F20-BLR115-3-200 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03084035 0.00028165
531 EU-NG-2 F20-BLR115-3-200 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02110129 0.00019271
532 EU-NG-2 F20-BLR115-3-200 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17043353 0.00155647
533 EU-NG-2 F20-BLR115-3-200 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00194781 0.00001779
534 EU-NG-2 F20-BLR115-3-200 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.18666529 0.00170471
535 EU-NG-2 F20-BLR115-3-200 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.35360588 0.02149412
536 EU-NG-2 F20-BLR115-3-200 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.25159235 0.00229765
537 EU-NG-2 F20-BLR115-3-200 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21912882 0.00200118
538 EU-NG-2 F20-BLR115-3-200 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.47072118 0.00429882
539 EU-NG-2 F20-BLR115-3-200 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.55999588 0.00511412
540 EU-NG-2 F20-BLR115-3-200 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.99825353 0.00911647
541 EU-NG-2 F20-BLR115-3-200 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.37333059 0.00340941
542 EU-NG-2 F20-BLR115-3-200 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.15070882 0.01964118
543 EU-NG-2 F20-BLR115-3-200 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.59882882 0.01460118
544 EU-NG-2 F20-BLR115-3-200 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 259.70823529 2.37176471
545 EU-NG-2 F20-BLR115-3-200 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13391206 0.00122294
546 EU-NG-2 F20-BLR115-3-200 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00811588 0.00007412
547 EU-NG-2 F20-BLR115-3-200 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009739 0.00000089
548 EU-NG-2 F20-BLR115-3-200 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02434765 0.00022235
549 EU-NG-2 F20-BLR115-4-200 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01577573 0.00014407
550 EU-NG-2 F20-BLR115-4-200 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34706605 0.00316955
551 EU-NG-2 F20-BLR115-4-200 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00094654 0.00000864
552 EU-NG-2 F20-BLR115-4-200 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08676651 0.00079239
553 EU-NG-2 F20-BLR115-4-200 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0044172 0.00004034
554 EU-NG-2 F20-BLR115-4-200 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00662581 0.00006051
555 EU-NG-2 F20-BLR115-4-200 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06704685 0.0006123
556 EU-NG-2 F20-BLR115-4-200 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03943932 0.00036018
557 EU-NG-2 F20-BLR115-4-200 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02997389 0.00027373
558 EU-NG-2 F20-BLR115-4-200 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02050845 0.00018729
559 EU-NG-2 F20-BLR115-4-200 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16564516 0.00151274
560 EU-NG-2 F20-BLR115-4-200 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00189309 0.00001729
561 EU-NG-2 F20-BLR115-4-200 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.18142089 0.00165681
562 EU-NG-2 F20-BLR115-4-200 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.28748076 0.02089024
563 EU-NG-2 F20-BLR115-4-200 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24452381 0.00223309
564 EU-NG-2 F20-BLR115-4-200 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21297235 0.00194495
565 EU-NG-2 F20-BLR115-4-200 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.45749615 0.00417805
566 EU-NG-2 F20-BLR115-4-200 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.54426266 0.00497044
567 EU-NG-2 F20-BLR115-4-200 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.97020736 0.00886034
568 EU-NG-2 F20-BLR115-4-200 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36284178 0.00331362
569 EU-NG-2 F20-BLR115-4-200 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.09028415 0.01908935
570 EU-NG-2 F20-BLR115-4-200 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.55390935 0.01419095
571 EU-NG-2 F20-BLR115-4-200 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 252.41167059 2.30512941
572 EU-NG-2 F20-BLR115-4-200 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13014977 0.00118858
573 EU-NG-2 F20-BLR115-4-200 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00788786 0.00007204
574 EU-NG-2 F20-BLR115-4-200 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009465 0.00000086
575 EU-NG-2 F20-BLR115-4-200 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02366359 0.00021611
576 EU-NG-2 F20-BLR115-5-200 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514604 0.00013832
577 EU-NG-2 F20-BLR115-5-200 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33321288 0.00304304
578 EU-NG-2 F20-BLR115-5-200 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090876 0.0000083
579 EU-NG-2 F20-BLR115-5-200 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330322 0.00076076
580 EU-NG-2 F20-BLR115-5-200 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424089 0.00003873
581 EU-NG-2 F20-BLR115-5-200 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636134 0.00005809
582 EU-NG-2 F20-BLR115-5-200 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06437067 0.00058786
583 EU-NG-2 F20-BLR115-5-200 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0378651 0.0003458
584 EU-NG-2 F20-BLR115-5-200 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877748 0.00026281
585 EU-NG-2 F20-BLR115-5-200 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968985 0.00017982
586 EU-NG-2 F20-BLR115-5-200 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15903342 0.00145236
587 EU-NG-2 F20-BLR115-5-200 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181752 0.0000166
588 EU-NG-2 F20-BLR115-5-200 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417946 0.00159068
589 EU-NG-2 F20-BLR115-5-200 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.1961758 0.0200564
590 EU-NG-2 F20-BLR115-5-200 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23476362 0.00214396
591 EU-NG-2 F20-BLR115-5-200 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20447154 0.00186732
592 EU-NG-2 F20-BLR115-5-200 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43923516 0.00401128
593 EU-NG-2 F20-BLR115-5-200 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52253838 0.00477204
594 EU-NG-2 F20-BLR115-5-200 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93148146 0.00850668
595 EU-NG-2 F20-BLR115-5-200 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34835892 0.00318136
596 EU-NG-2 F20-BLR115-5-200 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.0068503 0.0183274
597 EU-NG-2 F20-BLR115-5-200 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49188494 0.01362452
598 EU-NG-2 F20-BLR115-5-200 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.33664 2.21312
599 EU-NG-2 F20-BLR115-5-200 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495483 0.00114114
600 EU-NG-2 F20-BLR115-5-200 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757302 0.00006916
601 EU-NG-2 F20-BLR115-5-200 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009088 0.00000083
602 EU-NG-2 F20-BLR115-5-200 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271906 0.00020748
603 EU-NG-2 CUB2-BLR115-1-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01654712 0.00015112
604 EU-NG-2 CUB2-BLR115-1-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36403674 0.00332454
605 EU-NG-2 CUB2-BLR115-1-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00099283 0.00000907
606 EU-NG-2 CUB2-BLR115-1-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09100919 0.00083113
607 EU-NG-2 CUB2-BLR115-1-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00463319 0.00004231
608 EU-NG-2 CUB2-BLR115-1-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00694979 0.00006347
609 EU-NG-2 CUB2-BLR115-1-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07032528 0.00064224
610 EU-NG-2 CUB2-BLR115-1-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04136781 0.00037779
611 EU-NG-2 CUB2-BLR115-1-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03143954 0.00028712
612 EU-NG-2 CUB2-BLR115-1-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02151126 0.00019645
613 EU-NG-2 CUB2-BLR115-1-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17374481 0.00158671
614 EU-NG-2 CUB2-BLR115-1-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00198565 0.00001813
615 EU-NG-2 CUB2-BLR115-1-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.19029193 0.00173783
616 EU-NG-2 CUB2-BLR115-1-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.39933308 0.02191172
617 EU-NG-2 CUB2-BLR115-1-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.25648043 0.00234229
618 EU-NG-2 CUB2-BLR115-1-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.22338618 0.00204006
619 EU-NG-2 CUB2-BLR115-1-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.47986662 0.00438234
620 EU-NG-2 CUB2-BLR115-1-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.5708758 0.00521348
621 EU-NG-2 CUB2-BLR115-1-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.01764817 0.00929359
622 EU-NG-2 CUB2-BLR115-1-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.38058387 0.00347565
623 EU-NG-2 CUB2-BLR115-1-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19249402 0.02002278
624 EU-NG-2 CUB2-BLR115-1-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.62989178 0.01488486
625 EU-NG-2 CUB2-BLR115-1-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 264.75399529 2.41784471
626 EU-NG-2 CUB2-BLR115-1-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13651378 0.0012467
627 EU-NG-2 CUB2-BLR115-1-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00827356 0.00007556
628 EU-NG-2 CUB2-BLR115-1-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009928 0.00000091
629 EU-NG-2 CUB2-BLR115-1-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02482069 0.00022667
630 EU-NG-2 CUB2-BLR115-2-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01654712 0.00015112
631 EU-NG-2 CUB2-BLR115-2-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36403674 0.00332454
632 EU-NG-2 CUB2-BLR115-2-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00099283 0.00000907
633 EU-NG-2 CUB2-BLR115-2-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09100919 0.00083113
634 EU-NG-2 CUB2-BLR115-2-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00463319 0.00004231
635 EU-NG-2 CUB2-BLR115-2-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00694979 0.00006347
636 EU-NG-2 CUB2-BLR115-2-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07032528 0.00064224
637 EU-NG-2 CUB2-BLR115-2-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04136781 0.00037779
638 EU-NG-2 CUB2-BLR115-2-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03143954 0.00028712
639 EU-NG-2 CUB2-BLR115-2-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02151126 0.00019645
640 EU-NG-2 CUB2-BLR115-2-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17374481 0.00158671
641 EU-NG-2 CUB2-BLR115-2-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00198565 0.00001813
642 EU-NG-2 CUB2-BLR115-2-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.19029193 0.00173783
643 EU-NG-2 CUB2-BLR115-2-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.39933308 0.02191172
644 EU-NG-2 CUB2-BLR115-2-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.25648043 0.00234229
645 EU-NG-2 CUB2-BLR115-2-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.22338618 0.00204006
646 EU-NG-2 CUB2-BLR115-2-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.47986662 0.00438234
647 EU-NG-2 CUB2-BLR115-2-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.5708758 0.00521348
648 EU-NG-2 CUB2-BLR115-2-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.01764817 0.00929359
649 EU-NG-2 CUB2-BLR115-2-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.38058387 0.00347565
650 EU-NG-2 CUB2-BLR115-2-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19249402 0.02002278
651 EU-NG-2 CUB2-BLR115-2-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.62989178 0.01488486
652 EU-NG-2 CUB2-BLR115-2-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 264.75399529 2.41784471
653 EU-NG-2 CUB2-BLR115-2-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13651378 0.0012467
654 EU-NG-2 CUB2-BLR115-2-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00827356 0.00007556
655 EU-NG-2 CUB2-BLR115-2-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009928 0.00000091
656 EU-NG-2 CUB2-BLR115-2-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02482069 0.00022667
657 EU-NG-2 CUB2-BLR115-3-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01654712 0.00015112
658 EU-NG-2 CUB2-BLR115-3-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36403674 0.00332454
659 EU-NG-2 CUB2-BLR115-3-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00099283 0.00000907
660 EU-NG-2 CUB2-BLR115-3-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09100919 0.00083113
661 EU-NG-2 CUB2-BLR115-3-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00463319 0.00004231
662 EU-NG-2 CUB2-BLR115-3-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00694979 0.00006347
663 EU-NG-2 CUB2-BLR115-3-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07032528 0.00064224
664 EU-NG-2 CUB2-BLR115-3-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04136781 0.00037779
665 EU-NG-2 CUB2-BLR115-3-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03143954 0.00028712
666 EU-NG-2 CUB2-BLR115-3-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02151126 0.00019645
667 EU-NG-2 CUB2-BLR115-3-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17374481 0.00158671
668 EU-NG-2 CUB2-BLR115-3-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00198565 0.00001813
669 EU-NG-2 CUB2-BLR115-3-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.19029193 0.00173783
670 EU-NG-2 CUB2-BLR115-3-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.39933308 0.02191172
671 EU-NG-2 CUB2-BLR115-3-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.25648043 0.00234229
672 EU-NG-2 CUB2-BLR115-3-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.22338618 0.00204006
673 EU-NG-2 CUB2-BLR115-3-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.47986662 0.00438234
674 EU-NG-2 CUB2-BLR115-3-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.5708758 0.00521348
675 EU-NG-2 CUB2-BLR115-3-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.01764817 0.00929359
676 EU-NG-2 CUB2-BLR115-3-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.38058387 0.00347565
677 EU-NG-2 CUB2-BLR115-3-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19249402 0.02002278
678 EU-NG-2 CUB2-BLR115-3-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.62989178 0.01488486
679 EU-NG-2 CUB2-BLR115-3-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 264.75399529 2.41784471
680 EU-NG-2 CUB2-BLR115-3-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13651378 0.0012467
681 EU-NG-2 CUB2-BLR115-3-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00827356 0.00007556
682 EU-NG-2 CUB2-BLR115-3-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009928 0.00000091
683 EU-NG-2 CUB2-BLR115-3-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02482069 0.00022667
684 EU-NG-2 CUB2-BLR115-4-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01682873 0.00015369
685 EU-NG-2 CUB2-BLR115-4-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.37023212 0.00338112
686 EU-NG-2 CUB2-BLR115-4-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00100972 0.00000922
687 EU-NG-2 CUB2-BLR115-4-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09255803 0.00084528
688 EU-NG-2 CUB2-BLR115-4-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00471205 0.00004303
689 EU-NG-2 CUB2-BLR115-4-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00706807 0.00006455
690 EU-NG-2 CUB2-BLR115-4-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07152212 0.00065317
691 EU-NG-2 CUB2-BLR115-4-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04207183 0.00038422
692 EU-NG-2 CUB2-BLR115-4-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03197459 0.00029201
693 EU-NG-2 CUB2-BLR115-4-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02187735 0.00019979
694 EU-NG-2 CUB2-BLR115-4-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.1767017 0.00161371
695 EU-NG-2 CUB2-BLR115-4-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00201945 0.00001844
696 EU-NG-2 CUB2-BLR115-4-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.19353043 0.0017674
697 EU-NG-2 CUB2-BLR115-4-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.44016628 0.02228462
698 EU-NG-2 CUB2-BLR115-4-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.26084536 0.00238215
699 EU-NG-2 CUB2-BLR115-4-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.22718789 0.00207478
700 EU-NG-2 CUB2-BLR115-4-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.48803326 0.00445692
701 EU-NG-2 CUB2-BLR115-4-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.58059129 0.0053022
702 EU-NG-2 CUB2-BLR115-4-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.03496708 0.00945175
703 EU-NG-2 CUB2-BLR115-4-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.38706086 0.0035348
704 EU-NG-2 CUB2-BLR115-4-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.22980711 0.02036354
705 EU-NG-2 CUB2-BLR115-4-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.65763019 0.01513818
706 EU-NG-2 CUB2-BLR115-4-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 269.25972706 2.45899294
707 EU-NG-2 CUB2-BLR115-4-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13883705 0.00126792
708 EU-NG-2 CUB2-BLR115-4-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00841437 0.00007684
709 EU-NG-2 CUB2-BLR115-4-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00010097 0.00000092
710 EU-NG-2 CUB2-BLR115-4-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0252431 0.00023053
711 EU-NG-2 CUB2-BLR115-5-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514552 0.00013832
712 EU-NG-2 CUB2-BLR115-5-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33320154 0.00304294
713 EU-NG-2 CUB2-BLR115-5-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090873 0.0000083
714 EU-NG-2 CUB2-BLR115-5-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330039 0.00076073
715 EU-NG-2 CUB2-BLR115-5-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424075 0.00003873
716 EU-NG-2 CUB2-BLR115-5-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636112 0.00005809
717 EU-NG-2 CUB2-BLR115-5-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06436848 0.00058784
718 EU-NG-2 CUB2-BLR115-5-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786381 0.00034579
719 EU-NG-2 CUB2-BLR115-5-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0287765 0.0002628
720 EU-NG-2 CUB2-BLR115-5-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968918 0.00017981
721 EU-NG-2 CUB2-BLR115-5-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15902801 0.00145231
722 EU-NG-2 CUB2-BLR115-5-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181746 0.0000166
723 EU-NG-2 CUB2-BLR115-5-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417353 0.00159063
724 EU-NG-2 CUB2-BLR115-5-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19610108 0.02005572
725 EU-NG-2 CUB2-BLR115-5-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23475563 0.00214389
726 EU-NG-2 CUB2-BLR115-5-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20446458 0.00186726
727 EU-NG-2 CUB2-BLR115-5-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43922022 0.00401114
728 EU-NG-2 CUB2-BLR115-5-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.5225206 0.00477188
729 EU-NG-2 CUB2-BLR115-5-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93144977 0.00850639
730 EU-NG-2 CUB2-BLR115-5-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34834707 0.00318125
731 EU-NG-2 CUB2-BLR115-5-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00678202 0.01832678
732 EU-NG-2 CUB2-BLR115-5-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49183418 0.01362406
733 EU-NG-2 CUB2-BLR115-5-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.32839529 2.21304471
734 EU-NG-2 CUB2-BLR115-5-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495058 0.0011411
735 EU-NG-2 CUB2-BLR115-5-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757276 0.00006916
736 EU-NG-2 CUB2-BLR115-5-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
737 EU-NG-2 CUB2-BLR115-5-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271829 0.00020747
738 EU-NG-2 CUB2-BLR115-6-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01577728 0.00014408
739 EU-NG-2 CUB2-BLR115-6-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34710006 0.00316986
740 EU-NG-2 CUB2-BLR115-6-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00094664 0.00000865
741 EU-NG-2 CUB2-BLR115-6-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08677501 0.00079247
742 EU-NG-2 CUB2-BLR115-6-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00441764 0.00004034
743 EU-NG-2 CUB2-BLR115-6-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00662646 0.00006052
744 EU-NG-2 CUB2-BLR115-6-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06705342 0.00061236
745 EU-NG-2 CUB2-BLR115-6-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03944319 0.00036021
746 EU-NG-2 CUB2-BLR115-6-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02997682 0.00027376
747 EU-NG-2 CUB2-BLR115-6-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02051046 0.00018731
748 EU-NG-2 CUB2-BLR115-6-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16566139 0.00151289
749 EU-NG-2 CUB2-BLR115-6-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00189327 0.00001729
750 EU-NG-2 CUB2-BLR115-6-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.18143867 0.00165697
751 EU-NG-2 CUB2-BLR115-6-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.28770492 0.02089228
752 EU-NG-2 CUB2-BLR115-6-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24454777 0.00223331
753 EU-NG-2 CUB2-BLR115-6-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21299322 0.00194514
754 EU-NG-2 CUB2-BLR115-6-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.45754098 0.00417846
755 EU-NG-2 CUB2-BLR115-6-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.544316 0.00497092
756 EU-NG-2 CUB2-BLR115-6-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.97030243 0.00886121
757 EU-NG-2 CUB2-BLR115-6-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36287733 0.00331395
758 EU-NG-2 CUB2-BLR115-6-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.09048898 0.01909122
759 EU-NG-2 CUB2-BLR115-6-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.55406162 0.01419234
760 EU-NG-2 CUB2-BLR115-6-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 252.43640471 2.30535529
761 EU-NG-2 CUB2-BLR115-6-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13016252 0.0011887
762 EU-NG-2 CUB2-BLR115-6-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00788864 0.00007204
763 EU-NG-2 CUB2-BLR115-6-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009466 0.00000086
764 EU-NG-2 CUB2-BLR115-6-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02366591 0.00021613
765 EU-NG-2 RA4-BLR117-3-30 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514604 0.00013832
766 EU-NG-2 RA4-BLR117-3-30 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33321288 0.00304304
767 EU-NG-2 RA4-BLR117-3-30 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090876 0.0000083
768 EU-NG-2 RA4-BLR117-3-30 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330322 0.00076076
769 EU-NG-2 RA4-BLR117-3-30 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424089 0.00003873
770 EU-NG-2 RA4-BLR117-3-30 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636134 0.00005809
771 EU-NG-2 RA4-BLR117-3-30 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06437067 0.00058786
772 EU-NG-2 RA4-BLR117-3-30 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0378651 0.0003458
773 EU-NG-2 RA4-BLR117-3-30 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877748 0.00026281
774 EU-NG-2 RA4-BLR117-3-30 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968985 0.00017982
775 EU-NG-2 RA4-BLR117-3-30 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15903342 0.00145236
776 EU-NG-2 RA4-BLR117-3-30 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181752 0.0000166
777 EU-NG-2 RA4-BLR117-3-30 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417946 0.00159068
778 EU-NG-2 RA4-BLR117-3-30 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.1961758 0.0200564
779 EU-NG-2 RA4-BLR117-3-30 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23476362 0.00214396
780 EU-NG-2 RA4-BLR117-3-30 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20447154 0.00186732
781 EU-NG-2 RA4-BLR117-3-30 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43923516 0.00401128
782 EU-NG-2 RA4-BLR117-3-30 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52253838 0.00477204
783 EU-NG-2 RA4-BLR117-3-30 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93148146 0.00850668
784 EU-NG-2 RA4-BLR117-3-30 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34835892 0.00318136
785 EU-NG-2 RA4-BLR117-3-30 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.0068503 0.0183274
786 EU-NG-2 RA4-BLR117-3-30 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49188494 0.01362452
787 EU-NG-2 RA4-BLR117-3-30 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.33664 2.21312
788 EU-NG-2 RA4-BLR117-3-30 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495483 0.00114114
789 EU-NG-2 RA4-BLR117-3-30 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757302 0.00006916
790 EU-NG-2 RA4-BLR117-3-30 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009088 0.00000083
791 EU-NG-2 RA4-BLR117-3-30 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271906 0.00020748
792 EU-NG-2 RA4-BLR117-4-30 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514604 0.00013832
793 EU-NG-2 RA4-BLR117-4-30 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33321288 0.00304304
794 EU-NG-2 RA4-BLR117-4-30 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090876 0.0000083
795 EU-NG-2 RA4-BLR117-4-30 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330322 0.00076076
796 EU-NG-2 RA4-BLR117-4-30 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424089 0.00003873
797 EU-NG-2 RA4-BLR117-4-30 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636134 0.00005809
798 EU-NG-2 RA4-BLR117-4-30 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06437067 0.00058786
799 EU-NG-2 RA4-BLR117-4-30 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0378651 0.0003458
800 EU-NG-2 RA4-BLR117-4-30 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877748 0.00026281
801 EU-NG-2 RA4-BLR117-4-30 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968985 0.00017982
802 EU-NG-2 RA4-BLR117-4-30 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15903342 0.00145236
803 EU-NG-2 RA4-BLR117-4-30 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181752 0.0000166
804 EU-NG-2 RA4-BLR117-4-30 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417946 0.00159068
805 EU-NG-2 RA4-BLR117-4-30 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.1961758 0.0200564
806 EU-NG-2 RA4-BLR117-4-30 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23476362 0.00214396
807 EU-NG-2 RA4-BLR117-4-30 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20447154 0.00186732
808 EU-NG-2 RA4-BLR117-4-30 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43923516 0.00401128
809 EU-NG-2 RA4-BLR117-4-30 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52253838 0.00477204
810 EU-NG-2 RA4-BLR117-4-30 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93148146 0.00850668
811 EU-NG-2 RA4-BLR117-4-30 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34835892 0.00318136
812 EU-NG-2 RA4-BLR117-4-30 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.0068503 0.0183274
813 EU-NG-2 RA4-BLR117-4-30 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49188494 0.01362452
814 EU-NG-2 RA4-BLR117-4-30 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.33664 2.21312
815 EU-NG-2 RA4-BLR117-4-30 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495483 0.00114114
816 EU-NG-2 RA4-BLR117-4-30 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757302 0.00006916
817 EU-NG-2 RA4-BLR117-4-30 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009088 0.00000083
818 EU-NG-2 RA4-BLR117-4-30 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271906 0.00020748
819 EU-NG-2 BLR-115-2-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514604 0.00013832
820 EU-NG-2 BLR-115-2-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33321288 0.00304304
821 EU-NG-2 BLR-115-2-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090876 0.0000083
822 EU-NG-2 BLR-115-2-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330322 0.00076076
823 EU-NG-2 BLR-115-2-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424089 0.00003873
824 EU-NG-2 BLR-115-2-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636134 0.00005809
825 EU-NG-2 BLR-115-2-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06437067 0.00058786
826 EU-NG-2 BLR-115-2-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0378651 0.0003458
827 EU-NG-2 BLR-115-2-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877748 0.00026281
828 EU-NG-2 BLR-115-2-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968985 0.00017982
829 EU-NG-2 BLR-115-2-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15903342 0.00145236
830 EU-NG-2 BLR-115-2-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181752 0.0000166
831 EU-NG-2 BLR-115-2-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417946 0.00159068
832 EU-NG-2 BLR-115-2-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.1961758 0.0200564
833 EU-NG-2 BLR-115-2-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23476362 0.00214396
834 EU-NG-2 BLR-115-2-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20447154 0.00186732
835 EU-NG-2 BLR-115-2-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43923516 0.00401128
836 EU-NG-2 BLR-115-2-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52253838 0.00477204
837 EU-NG-2 BLR-115-2-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93148146 0.00850668
838 EU-NG-2 BLR-115-2-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34835892 0.00318136
839 EU-NG-2 BLR-115-2-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.0068503 0.0183274
840 EU-NG-2 BLR-115-2-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49188494 0.01362452
841 EU-NG-2 BLR-115-2-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.33664 2.21312
842 EU-NG-2 BLR-115-2-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495483 0.00114114
843 EU-NG-2 BLR-115-2-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757302 0.00006916
844 EU-NG-2 BLR-115-2-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009088 0.00000083
845 EU-NG-2 BLR-115-2-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271906 0.00020748
846 EU-NG-2 BLR-115-3-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514604 0.00013832
847 EU-NG-2 BLR-115-3-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33321288 0.00304304
848 EU-NG-2 BLR-115-3-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090876 0.0000083
849 EU-NG-2 BLR-115-3-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330322 0.00076076
850 EU-NG-2 BLR-115-3-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424089 0.00003873
851 EU-NG-2 BLR-115-3-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636134 0.00005809
852 EU-NG-2 BLR-115-3-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06437067 0.00058786
853 EU-NG-2 BLR-115-3-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0378651 0.0003458
854 EU-NG-2 BLR-115-3-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877748 0.00026281
855 EU-NG-2 BLR-115-3-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968985 0.00017982
856 EU-NG-2 BLR-115-3-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15903342 0.00145236
857 EU-NG-2 BLR-115-3-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181752 0.0000166
858 EU-NG-2 BLR-115-3-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417946 0.00159068
859 EU-NG-2 BLR-115-3-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.1961758 0.0200564
860 EU-NG-2 BLR-115-3-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23476362 0.00214396
861 EU-NG-2 BLR-115-3-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20447154 0.00186732
862 EU-NG-2 BLR-115-3-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43923516 0.00401128
863 EU-NG-2 BLR-115-3-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52253838 0.00477204
864 EU-NG-2 BLR-115-3-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93148146 0.00850668
865 EU-NG-2 BLR-115-3-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34835892 0.00318136
866 EU-NG-2 BLR-115-3-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.0068503 0.0183274
867 EU-NG-2 BLR-115-3-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49188494 0.01362452
868 EU-NG-2 BLR-115-3-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.33664 2.21312
869 EU-NG-2 BLR-115-3-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495483 0.00114114
870 EU-NG-2 BLR-115-3-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757302 0.00006916
871 EU-NG-2 BLR-115-3-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009088 0.00000083
872 EU-NG-2 BLR-115-3-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271906 0.00020748
873 EU-NG-2 BLR-115-4-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01682899 0.00015369
874 EU-NG-2 BLR-115-4-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.37023779 0.00338117
875 EU-NG-2 BLR-115-4-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00100974 0.00000922
876 EU-NG-2 BLR-115-4-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09255945 0.00084529
877 EU-NG-2 BLR-115-4-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00471212 0.00004303
878 EU-NG-2 BLR-115-4-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00706818 0.00006455
879 EU-NG-2 BLR-115-4-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07152321 0.00065318
880 EU-NG-2 BLR-115-4-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04207248 0.00038422
881 EU-NG-2 BLR-115-4-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03197508 0.00029201
882 EU-NG-2 BLR-115-4-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02187769 0.0001998
883 EU-NG-2 BLR-115-4-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.1767044 0.00161374
884 EU-NG-2 BLR-115-4-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00201948 0.00001844
885 EU-NG-2 BLR-115-4-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.19353339 0.00176743
886 EU-NG-2 BLR-115-4-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.44020364 0.02228496
887 EU-NG-2 BLR-115-4-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.26084935 0.00238219
888 EU-NG-2 BLR-115-4-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.22719137 0.00207481
889 EU-NG-2 BLR-115-4-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.48804073 0.00445699
890 EU-NG-2 BLR-115-4-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.58060018 0.00530228
891 EU-NG-2 BLR-115-4-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.03498292 0.0094519
892 EU-NG-2 BLR-115-4-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.38706678 0.00353486
893 EU-NG-2 BLR-115-4-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.22984125 0.02036385
894 EU-NG-2 BLR-115-4-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.65765557 0.01513841
895 EU-NG-2 BLR-115-4-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 269.26384941 2.45903059
896 EU-NG-2 BLR-115-4-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13883917 0.00126794
897 EU-NG-2 BLR-115-4-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0084145 0.00007684
898 EU-NG-2 BLR-115-4-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00010097 0.00000092
899 EU-NG-2 BLR-115-4-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02524349 0.00023053
900 EU-NG-2 BLR-115-5-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00736252 0.00006724
901 EU-NG-2 BLR-115-5-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16197549 0.00147923
902 EU-NG-2 BLR-115-5-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00044175 0.00000403
903 EU-NG-2 BLR-115-5-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04049387 0.00036981
904 EU-NG-2 BLR-115-5-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00206151 0.00001883
905 EU-NG-2 BLR-115-5-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00309226 0.00002824
906 EU-NG-2 BLR-115-5-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03129072 0.00028576
907 EU-NG-2 BLR-115-5-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01840631 0.00016809
908 EU-NG-2 BLR-115-5-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01398879 0.00012775
909 EU-NG-2 BLR-115-5-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00957128 0.00008741
910 EU-NG-2 BLR-115-5-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07730648 0.000706
911 EU-NG-2 BLR-115-5-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0008835 0.00000807
912 EU-NG-2 BLR-115-5-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08466901 0.00077323
913 EU-NG-2 BLR-115-5-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.06756574 0.00974946
914 EU-NG-2 BLR-115-5-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.1141191 0.00104218
915 EU-NG-2 BLR-115-5-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09939405 0.00090771
916 EU-NG-2 BLR-115-5-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21351315 0.00194989
917 EU-NG-2 BLR-115-5-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.25400702 0.0023197
918 EU-NG-2 BLR-115-5-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.45279512 0.00413512
919 EU-NG-2 BLR-115-5-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16933801 0.00154647
920 EU-NG-2 BLR-115-5-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.97553421 0.00890899
921 EU-NG-2 BLR-115-5-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.72520845 0.00662291
922 EU-NG-2 BLR-115-5-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 117.80035765 1.07580235
923 EU-NG-2 BLR-115-5-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06074081 0.00055471
924 EU-NG-2 BLR-115-5-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00368126 0.00003362
925 EU-NG-2 BLR-115-5-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00004418 0.0000004
926 EU-NG-2 BLR-115-5-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01104378 0.00010086
927 EU-NG-2 BLR-115-6-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514552 0.00013832
928 EU-NG-2 BLR-115-6-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33320154 0.00304294
929 EU-NG-2 BLR-115-6-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090873 0.0000083
930 EU-NG-2 BLR-115-6-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330039 0.00076073
931 EU-NG-2 BLR-115-6-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424075 0.00003873
932 EU-NG-2 BLR-115-6-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636112 0.00005809
933 EU-NG-2 BLR-115-6-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06436848 0.00058784
934 EU-NG-2 BLR-115-6-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786381 0.00034579
935 EU-NG-2 BLR-115-6-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0287765 0.0002628
936 EU-NG-2 BLR-115-6-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968918 0.00017981
937 EU-NG-2 BLR-115-6-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15902801 0.00145231
938 EU-NG-2 BLR-115-6-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181746 0.0000166
939 EU-NG-2 BLR-115-6-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417353 0.00159063
940 EU-NG-2 BLR-115-6-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19610108 0.02005572
941 EU-NG-2 BLR-115-6-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23475563 0.00214389
942 EU-NG-2 BLR-115-6-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20446458 0.00186726
943 EU-NG-2 BLR-115-6-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43922022 0.00401114
944 EU-NG-2 BLR-115-6-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.5225206 0.00477188
945 EU-NG-2 BLR-115-6-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93144977 0.00850639
946 EU-NG-2 BLR-115-6-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34834707 0.00318125
947 EU-NG-2 BLR-115-6-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00678202 0.01832678
948 EU-NG-2 BLR-115-6-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49183418 0.01362406
949 EU-NG-2 BLR-115-6-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.32839529 2.21304471
950 EU-NG-2 BLR-115-6-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495058 0.0011411
951 EU-NG-2 BLR-115-6-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757276 0.00006916
952 EU-NG-2 BLR-115-6-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
953 EU-NG-2 BLR-115-6-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271829 0.00020747
954 EU-NG-2 RP1-BLR115-1-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00716207 0.00006541
955 EU-NG-2 RP1-BLR115-1-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.1575656 0.00143896
956 EU-NG-2 RP1-BLR115-1-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00042972 0.00000392
957 EU-NG-2 RP1-BLR115-1-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0393914 0.00035974
958 EU-NG-2 RP1-BLR115-1-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00200538 0.00001831
959 EU-NG-2 RP1-BLR115-1-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00300807 0.00002747
960 EU-NG-2 RP1-BLR115-1-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03043881 0.00027798
961 EU-NG-2 RP1-BLR115-1-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01790518 0.00016352
962 EU-NG-2 RP1-BLR115-1-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01360794 0.00012427
963 EU-NG-2 RP1-BLR115-1-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00931069 0.00008503
964 EU-NG-2 RP1-BLR115-1-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07520177 0.00068677
965 EU-NG-2 RP1-BLR115-1-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00085945 0.00000785
966 EU-NG-2 RP1-BLR115-1-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08236384 0.00075218
967 EU-NG-2 RP1-BLR115-1-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.03850058 0.00948402
968 EU-NG-2 RP1-BLR115-1-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.11101213 0.00101381
969 EU-NG-2 RP1-BLR115-1-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09668798 0.000883
970 EU-NG-2 RP1-BLR115-1-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20770012 0.0018968
971 EU-NG-2 RP1-BLR115-1-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24709152 0.00225654
972 EU-NG-2 RP1-BLR115-1-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.44046749 0.00402253
973 EU-NG-2 RP1-BLR115-1-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16472768 0.00150436
974 EU-NG-2 RP1-BLR115-1-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.94897466 0.00866644
975 EU-NG-2 RP1-BLR115-1-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.70546418 0.0064426
976 EU-NG-2 RP1-BLR115-1-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 114.59316706 1.04651294
977 EU-NG-2 RP1-BLR115-1-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0590871 0.00053961
978 EU-NG-2 RP1-BLR115-1-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00358104 0.0000327
979 EU-NG-2 RP1-BLR115-1-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00004297 0.00000039
980 EU-NG-2 RP1-BLR115-1-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01074311 0.00009811
981 EU-NG-2 RP1-BLR115-2-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00631081 0.00005763
982 EU-NG-2 RP1-BLR115-2-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13883776 0.00126792
983 EU-NG-2 RP1-BLR115-2-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00037865 0.00000346
984 EU-NG-2 RP1-BLR115-2-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03470944 0.00031698
985 EU-NG-2 RP1-BLR115-2-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00176703 0.00001614
986 EU-NG-2 RP1-BLR115-2-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00265054 0.00002421
987 EU-NG-2 RP1-BLR115-2-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02682093 0.00024494
988 EU-NG-2 RP1-BLR115-2-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01577702 0.00014408
989 EU-NG-2 RP1-BLR115-2-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01199053 0.0001095
990 EU-NG-2 RP1-BLR115-2-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00820405 0.00007492
991 EU-NG-2 RP1-BLR115-2-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06626347 0.00060515
992 EU-NG-2 RP1-BLR115-2-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0007573 0.00000692
993 EU-NG-2 RP1-BLR115-2-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07257428 0.00066278
994 EU-NG-2 RP1-BLR115-2-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.91506702 0.00835678
995 EU-NG-2 RP1-BLR115-2-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09781751 0.00089331
996 EU-NG-2 RP1-BLR115-2-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0851959 0.00077804
997 EU-NG-2 RP1-BLR115-2-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.1830134 0.00167136
998 EU-NG-2 RP1-BLR115-2-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21772284 0.00198834
999 EU-NG-2 RP1-BLR115-2-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.38811463 0.00354443
1000 EU-NG-2 RP1-BLR115-2-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.14514856 0.00132556
1001 EU-NG-2 RP1-BLR115-2-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.83618194 0.00763636
1002 EU-NG-2 RP1-BLR115-2-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.6216145 0.00567684
1003 EU-NG-2 RP1-BLR115-2-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 100.97291294 0.92212706
1004 EU-NG-2 RP1-BLR115-2-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.05206416 0.00047547
1005 EU-NG-2 RP1-BLR115-2-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0031554 0.00002882
1006 EU-NG-2 RP1-BLR115-2-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00003786 0.00000035
1007 EU-NG-2 RP1-BLR115-2-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00946621 0.00008645
1008 EU-NG-2 RP1-BLR115-3-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00631081 0.00005763
1009 EU-NG-2 RP1-BLR115-3-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13883776 0.00126792
1010 EU-NG-2 RP1-BLR115-3-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00037865 0.00000346
1011 EU-NG-2 RP1-BLR115-3-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03470944 0.00031698
1012 EU-NG-2 RP1-BLR115-3-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00176703 0.00001614
1013 EU-NG-2 RP1-BLR115-3-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00265054 0.00002421
1014 EU-NG-2 RP1-BLR115-3-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02682093 0.00024494
1015 EU-NG-2 RP1-BLR115-3-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01577702 0.00014408
1016 EU-NG-2 RP1-BLR115-3-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01199053 0.0001095
1017 EU-NG-2 RP1-BLR115-3-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00820405 0.00007492
1018 EU-NG-2 RP1-BLR115-3-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06626347 0.00060515
1019 EU-NG-2 RP1-BLR115-3-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0007573 0.00000692
1020 EU-NG-2 RP1-BLR115-3-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07257428 0.00066278
1021 EU-NG-2 RP1-BLR115-3-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.91506702 0.00835678
1022 EU-NG-2 RP1-BLR115-3-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09781751 0.00089331
1023 EU-NG-2 RP1-BLR115-3-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0851959 0.00077804
1024 EU-NG-2 RP1-BLR115-3-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.1830134 0.00167136
1025 EU-NG-2 RP1-BLR115-3-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21772284 0.00198834
1026 EU-NG-2 RP1-BLR115-3-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.38811463 0.00354443
1027 EU-NG-2 RP1-BLR115-3-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.14514856 0.00132556
1028 EU-NG-2 RP1-BLR115-3-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.83618194 0.00763636
1029 EU-NG-2 RP1-BLR115-3-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.6216145 0.00567684
1030 EU-NG-2 RP1-BLR115-3-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 100.97291294 0.92212706
1031 EU-NG-2 RP1-BLR115-3-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.05206416 0.00047547
1032 EU-NG-2 RP1-BLR115-3-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0031554 0.00002882
1033 EU-NG-2 RP1-BLR115-3-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00003786 0.00000035
1034 EU-NG-2 RP1-BLR115-3-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00946621 0.00008645
1035 EU-NG-2 RP1-BLR115-4-210 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00603667 0.00005513
1036 EU-NG-2 RP1-BLR115-4-210 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13280675 0.00121285
1037 EU-NG-2 RP1-BLR115-4-210 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0003622 0.00000331
1038 EU-NG-2 RP1-BLR115-4-210 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03320169 0.00030321
1039 EU-NG-2 RP1-BLR115-4-210 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00169027 0.00001544
1040 EU-NG-2 RP1-BLR115-4-210 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0025354 0.00002315
1041 EU-NG-2 RP1-BLR115-4-210 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02565585 0.0002343
1042 EU-NG-2 RP1-BLR115-4-210 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01509168 0.00013782
1043 EU-NG-2 RP1-BLR115-4-210 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01146967 0.00010475
1044 EU-NG-2 RP1-BLR115-4-210 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00784767 0.00007167
1045 EU-NG-2 RP1-BLR115-4-210 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06338504 0.00057886
1046 EU-NG-2 RP1-BLR115-4-210 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0007244 0.00000662
1047 EU-NG-2 RP1-BLR115-4-210 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06942171 0.00063399
1048 EU-NG-2 RP1-BLR115-4-210 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.87531724 0.00799376
1049 EU-NG-2 RP1-BLR115-4-210 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.09356839 0.00085451
1050 EU-NG-2 RP1-BLR115-4-210 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08149505 0.00074425
1051 EU-NG-2 RP1-BLR115-4-210 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17506345 0.00159875
1052 EU-NG-2 RP1-BLR115-4-210 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20826514 0.00190196
1053 EU-NG-2 RP1-BLR115-4-210 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.37125524 0.00339046
1054 EU-NG-2 RP1-BLR115-4-210 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13884342 0.00126798
1055 EU-NG-2 RP1-BLR115-4-210 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.79985885 0.00730465
1056 EU-NG-2 RP1-BLR115-4-210 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.59461205 0.00543025
1057 EU-NG-2 RP1-BLR115-4-210 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 96.58672941 0.88207059
1058 EU-NG-2 RP1-BLR115-4-210 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04980253 0.00045482
1059 EU-NG-2 RP1-BLR115-4-210 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00301834 0.00002756
1060 EU-NG-2 RP1-BLR115-4-210 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00003622 0.00000033
1061 EU-NG-2 RP1-BLR115-4-210 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00905501 0.00008269
1062 EU-NG-2 CUB4-BLR115-1-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00736201 0.00006723
1063 EU-NG-2 CUB4-BLR115-1-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16196416 0.00147912
1064 EU-NG-2 CUB4-BLR115-1-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00044172 0.00000403
1065 EU-NG-2 CUB4-BLR115-1-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04049104 0.00036978
1066 EU-NG-2 CUB4-BLR115-1-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00206136 0.00001883
1067 EU-NG-2 CUB4-BLR115-1-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00309204 0.00002824
1068 EU-NG-2 CUB4-BLR115-1-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03128853 0.00028574
1069 EU-NG-2 CUB4-BLR115-1-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01840502 0.00016808
1070 EU-NG-2 CUB4-BLR115-1-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01398781 0.00012774
1071 EU-NG-2 CUB4-BLR115-1-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00957061 0.0000874
1072 EU-NG-2 CUB4-BLR115-1-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.07730107 0.00070595
1073 EU-NG-2 CUB4-BLR115-1-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00088344 0.00000807
1074 EU-NG-2 CUB4-BLR115-1-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08466308 0.00077318
1075 EU-NG-2 CUB4-BLR115-1-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.06749102 0.00974878
1076 EU-NG-2 CUB4-BLR115-1-10 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.11411111 0.00104211
1077 EU-NG-2 CUB4-BLR115-1-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0993871 0.00090764
1078 EU-NG-2 CUB4-BLR115-1-10 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.2134982 0.00194976
1079 EU-NG-2 CUB4-BLR115-1-10 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.25398924 0.00231954
1080 EU-NG-2 CUB4-BLR115-1-10 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.45276343 0.00413483
1081 EU-NG-2 CUB4-BLR115-1-10 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16932616 0.00154636
1082 EU-NG-2 CUB4-BLR115-1-10 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.97546594 0.00890836
1083 EU-NG-2 CUB4-BLR115-1-10 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.7251577 0.00662244
1084 EU-NG-2 CUB4-BLR115-1-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 117.79211294 1.07572706
1085 EU-NG-2 CUB4-BLR115-1-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06073656 0.00055467
1086 EU-NG-2 CUB4-BLR115-1-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.003681 0.00003362
1087 EU-NG-2 CUB4-BLR115-1-10 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00004417 0.0000004
1088 EU-NG-2 CUB4-BLR115-1-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01104301 0.00010085
1089 EU-NG-2 CUB4-BLR115-2-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01577573 0.00014407
1090 EU-NG-2 CUB4-BLR115-2-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34706605 0.00316955
1091 EU-NG-2 CUB4-BLR115-2-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00094654 0.00000864
1092 EU-NG-2 CUB4-BLR115-2-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08676651 0.00079239
1093 EU-NG-2 CUB4-BLR115-2-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0044172 0.00004034
1094 EU-NG-2 CUB4-BLR115-2-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00662581 0.00006051
1095 EU-NG-2 CUB4-BLR115-2-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06704685 0.0006123
1096 EU-NG-2 CUB4-BLR115-2-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03943932 0.00036018
1097 EU-NG-2 CUB4-BLR115-2-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02997389 0.00027373
1098 EU-NG-2 CUB4-BLR115-2-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02050845 0.00018729
1099 EU-NG-2 CUB4-BLR115-2-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16564516 0.00151274
1100 EU-NG-2 CUB4-BLR115-2-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00189309 0.00001729
1101 EU-NG-2 CUB4-BLR115-2-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.18142089 0.00165681
1102 EU-NG-2 CUB4-BLR115-2-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.28748076 0.02089024
1103 EU-NG-2 CUB4-BLR115-2-10 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24452381 0.00223309
1104 EU-NG-2 CUB4-BLR115-2-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21297235 0.00194495
1105 EU-NG-2 CUB4-BLR115-2-10 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.45749615 0.00417805
1106 EU-NG-2 CUB4-BLR115-2-10 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.54426266 0.00497044
1107 EU-NG-2 CUB4-BLR115-2-10 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.97020736 0.00886034
1108 EU-NG-2 CUB4-BLR115-2-10 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36284178 0.00331362
1109 EU-NG-2 CUB4-BLR115-2-10 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.09028415 0.01908935
1110 EU-NG-2 CUB4-BLR115-2-10 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.55390935 0.01419095
1111 EU-NG-2 CUB4-BLR115-2-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 252.41167059 2.30512941
1112 EU-NG-2 CUB4-BLR115-2-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13014977 0.00118858
1113 EU-NG-2 CUB4-BLR115-2-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00788786 0.00007204
1114 EU-NG-2 CUB4-BLR115-2-10 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009465 0.00000086
1115 EU-NG-2 CUB4-BLR115-2-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02366359 0.00021611
1116 EU-NG-2 CUB4-BLR115-3-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01577573 0.00014407
1117 EU-NG-2 CUB4-BLR115-3-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34706605 0.00316955
1118 EU-NG-2 CUB4-BLR115-3-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00094654 0.00000864
1119 EU-NG-2 CUB4-BLR115-3-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08676651 0.00079239
1120 EU-NG-2 CUB4-BLR115-3-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0044172 0.00004034
1121 EU-NG-2 CUB4-BLR115-3-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00662581 0.00006051
1122 EU-NG-2 CUB4-BLR115-3-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06704685 0.0006123
1123 EU-NG-2 CUB4-BLR115-3-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03943932 0.00036018
1124 EU-NG-2 CUB4-BLR115-3-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02997389 0.00027373
1125 EU-NG-2 CUB4-BLR115-3-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02050845 0.00018729
1126 EU-NG-2 CUB4-BLR115-3-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16564516 0.00151274
1127 EU-NG-2 CUB4-BLR115-3-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00189309 0.00001729
1128 EU-NG-2 CUB4-BLR115-3-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.18142089 0.00165681
1129 EU-NG-2 CUB4-BLR115-3-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.28748076 0.02089024
1130 EU-NG-2 CUB4-BLR115-3-10 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24452381 0.00223309
1131 EU-NG-2 CUB4-BLR115-3-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21297235 0.00194495
1132 EU-NG-2 CUB4-BLR115-3-10 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.45749615 0.00417805
1133 EU-NG-2 CUB4-BLR115-3-10 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.54426266 0.00497044
1134 EU-NG-2 CUB4-BLR115-3-10 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.97020736 0.00886034
1135 EU-NG-2 CUB4-BLR115-3-10 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36284178 0.00331362
1136 EU-NG-2 CUB4-BLR115-3-10 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.09028415 0.01908935
1137 EU-NG-2 CUB4-BLR115-3-10 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.55390935 0.01419095
1138 EU-NG-2 CUB4-BLR115-3-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 252.41167059 2.30512941
1139 EU-NG-2 CUB4-BLR115-3-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13014977 0.00118858
1140 EU-NG-2 CUB4-BLR115-3-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00788786 0.00007204
1141 EU-NG-2 CUB4-BLR115-3-10 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009465 0.00000086
1142 EU-NG-2 CUB4-BLR115-3-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02366359 0.00021611
1143 EU-NG-2 CUB4-BLR115-4-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01577573 0.00014407
1144 EU-NG-2 CUB4-BLR115-4-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34706605 0.00316955
1145 EU-NG-2 CUB4-BLR115-4-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00094654 0.00000864
1146 EU-NG-2 CUB4-BLR115-4-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08676651 0.00079239
1147 EU-NG-2 CUB4-BLR115-4-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0044172 0.00004034
1148 EU-NG-2 CUB4-BLR115-4-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00662581 0.00006051
1149 EU-NG-2 CUB4-BLR115-4-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06704685 0.0006123
1150 EU-NG-2 CUB4-BLR115-4-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03943932 0.00036018
1151 EU-NG-2 CUB4-BLR115-4-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02997389 0.00027373
1152 EU-NG-2 CUB4-BLR115-4-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02050845 0.00018729
1153 EU-NG-2 CUB4-BLR115-4-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16564516 0.00151274
1154 EU-NG-2 CUB4-BLR115-4-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00189309 0.00001729
1155 EU-NG-2 CUB4-BLR115-4-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.18142089 0.00165681
1156 EU-NG-2 CUB4-BLR115-4-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.28748076 0.02089024
1157 EU-NG-2 CUB4-BLR115-4-10 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24452381 0.00223309
1158 EU-NG-2 CUB4-BLR115-4-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.21297235 0.00194495
1159 EU-NG-2 CUB4-BLR115-4-10 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.45749615 0.00417805
1160 EU-NG-2 CUB4-BLR115-4-10 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.54426266 0.00497044
1161 EU-NG-2 CUB4-BLR115-4-10 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.97020736 0.00886034
1162 EU-NG-2 CUB4-BLR115-4-10 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36284178 0.00331362
1163 EU-NG-2 CUB4-BLR115-4-10 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.09028415 0.01908935
1164 EU-NG-2 CUB4-BLR115-4-10 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.55390935 0.01419095
1165 EU-NG-2 CUB4-BLR115-4-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 252.41167059 2.30512941
1166 EU-NG-2 CUB4-BLR115-4-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.13014977 0.00118858
1167 EU-NG-2 CUB4-BLR115-4-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00788786 0.00007204
1168 EU-NG-2 CUB4-BLR115-4-10 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009465 0.00000086
1169 EU-NG-2 CUB4-BLR115-4-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02366359 0.00021611
1170 EU-NG-2 CUB4-BLR115-5-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514604 0.00013832
1171 EU-NG-2 CUB4-BLR115-5-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33321288 0.00304304
1172 EU-NG-2 CUB4-BLR115-5-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090876 0.0000083
1173 EU-NG-2 CUB4-BLR115-5-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330322 0.00076076
1174 EU-NG-2 CUB4-BLR115-5-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424089 0.00003873
1175 EU-NG-2 CUB4-BLR115-5-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636134 0.00005809
1176 EU-NG-2 CUB4-BLR115-5-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06437067 0.00058786
1177 EU-NG-2 CUB4-BLR115-5-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0378651 0.0003458
1178 EU-NG-2 CUB4-BLR115-5-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877748 0.00026281
1179 EU-NG-2 CUB4-BLR115-5-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968985 0.00017982
1180 EU-NG-2 CUB4-BLR115-5-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15903342 0.00145236
1181 EU-NG-2 CUB4-BLR115-5-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181752 0.0000166
1182 EU-NG-2 CUB4-BLR115-5-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417946 0.00159068
1183 EU-NG-2 CUB4-BLR115-5-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.1961758 0.0200564
1184 EU-NG-2 CUB4-BLR115-5-10 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23476362 0.00214396
1185 EU-NG-2 CUB4-BLR115-5-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20447154 0.00186732
1186 EU-NG-2 CUB4-BLR115-5-10 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43923516 0.00401128
1187 EU-NG-2 CUB4-BLR115-5-10 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52253838 0.00477204
1188 EU-NG-2 CUB4-BLR115-5-10 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93148146 0.00850668
1189 EU-NG-2 CUB4-BLR115-5-10 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34835892 0.00318136
1190 EU-NG-2 CUB4-BLR115-5-10 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.0068503 0.0183274
1191 EU-NG-2 CUB4-BLR115-5-10 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49188494 0.01362452
1192 EU-NG-2 CUB4-BLR115-5-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.33664 2.21312
1193 EU-NG-2 CUB4-BLR115-5-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495483 0.00114114
1194 EU-NG-2 CUB4-BLR115-5-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757302 0.00006916
1195 EU-NG-2 CUB4-BLR115-5-10 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009088 0.00000083
1196 EU-NG-2 CUB4-BLR115-5-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271906 0.00020748
1197 EU-NG-2 CUB4-BLR115-6-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514604 0.00013832
1198 EU-NG-2 CUB4-BLR115-6-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33321288 0.00304304
1199 EU-NG-2 CUB4-BLR115-6-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090876 0.0000083
1200 EU-NG-2 CUB4-BLR115-6-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330322 0.00076076
1201 EU-NG-2 CUB4-BLR115-6-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424089 0.00003873
1202 EU-NG-2 CUB4-BLR115-6-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636134 0.00005809
1203 EU-NG-2 CUB4-BLR115-6-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06437067 0.00058786
1204 EU-NG-2 CUB4-BLR115-6-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0378651 0.0003458
1205 EU-NG-2 CUB4-BLR115-6-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877748 0.00026281
1206 EU-NG-2 CUB4-BLR115-6-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968985 0.00017982
1207 EU-NG-2 CUB4-BLR115-6-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15903342 0.00145236
1208 EU-NG-2 CUB4-BLR115-6-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181752 0.0000166
1209 EU-NG-2 CUB4-BLR115-6-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417946 0.00159068
1210 EU-NG-2 CUB4-BLR115-6-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.1961758 0.0200564
1211 EU-NG-2 CUB4-BLR115-6-10 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23476362 0.00214396
1212 EU-NG-2 CUB4-BLR115-6-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20447154 0.00186732
1213 EU-NG-2 CUB4-BLR115-6-10 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43923516 0.00401128
1214 EU-NG-2 CUB4-BLR115-6-10 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52253838 0.00477204
1215 EU-NG-2 CUB4-BLR115-6-10 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93148146 0.00850668
1216 EU-NG-2 CUB4-BLR115-6-10 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34835892 0.00318136
1217 EU-NG-2 CUB4-BLR115-6-10 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.0068503 0.0183274
1218 EU-NG-2 CUB4-BLR115-6-10 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49188494 0.01362452
1219 EU-NG-2 CUB4-BLR115-6-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.33664 2.21312
1220 EU-NG-2 CUB4-BLR115-6-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495483 0.00114114
1221 EU-NG-2 CUB4-BLR115-6-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757302 0.00006916
1222 EU-NG-2 CUB4-BLR115-6-10 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009088 0.00000083
1223 EU-NG-2 CUB4-BLR115-6-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271906 0.00020748
1224 EU-NG-2 CUB4-BLR115-7-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514604 0.00013832
1225 EU-NG-2 CUB4-BLR115-7-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33321288 0.00304304
1226 EU-NG-2 CUB4-BLR115-7-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090876 0.0000083
1227 EU-NG-2 CUB4-BLR115-7-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08330322 0.00076076
1228 EU-NG-2 CUB4-BLR115-7-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424089 0.00003873
1229 EU-NG-2 CUB4-BLR115-7-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636134 0.00005809
1230 EU-NG-2 CUB4-BLR115-7-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.06437067 0.00058786
1231 EU-NG-2 CUB4-BLR115-7-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0378651 0.0003458
1232 EU-NG-2 CUB4-BLR115-7-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877748 0.00026281
1233 EU-NG-2 CUB4-BLR115-7-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968985 0.00017982
1234 EU-NG-2 CUB4-BLR115-7-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15903342 0.00145236
1235 EU-NG-2 CUB4-BLR115-7-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181752 0.0000166
1236 EU-NG-2 CUB4-BLR115-7-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17417946 0.00159068
1237 EU-NG-2 CUB4-BLR115-7-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.1961758 0.0200564
1238 EU-NG-2 CUB4-BLR115-7-10 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23476362 0.00214396
1239 EU-NG-2 CUB4-BLR115-7-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20447154 0.00186732
1240 EU-NG-2 CUB4-BLR115-7-10 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43923516 0.00401128
1241 EU-NG-2 CUB4-BLR115-7-10 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52253838 0.00477204
1242 EU-NG-2 CUB4-BLR115-7-10 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93148146 0.00850668
1243 EU-NG-2 CUB4-BLR115-7-10 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34835892 0.00318136
1244 EU-NG-2 CUB4-BLR115-7-10 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.0068503 0.0183274
1245 EU-NG-2 CUB4-BLR115-7-10 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49188494 0.01362452
1246 EU-NG-2 CUB4-BLR115-7-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.33664 2.21312
1247 EU-NG-2 CUB4-BLR115-7-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12495483 0.00114114
1248 EU-NG-2 CUB4-BLR115-7-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757302 0.00006916
1249 EU-NG-2 CUB4-BLR115-7-10 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009088 0.00000083
1250 EU-NG-2 CUB4-BLR115-7-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271906 0.00020748
1251 EU-NG-2 RAC5-BLR115-1 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514449 0.00013831
1252 EU-NG-2 RAC5-BLR115-1 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33317887 0.00304273
1253 EU-NG-2 RAC5-BLR115-1 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090867 0.0000083
1254 EU-NG-2 RAC5-BLR115-1 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08329472 0.00076068
1255 EU-NG-2 RAC5-BLR115-1 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424046 0.00003873
1256 EU-NG-2 RAC5-BLR115-1 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636069 0.00005809
1257 EU-NG-2 RAC5-BLR115-1 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0643641 0.0005878
1258 EU-NG-2 RAC5-BLR115-1 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786124 0.00034576
1259 EU-NG-2 RAC5-BLR115-1 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877454 0.00026278
1260 EU-NG-2 RAC5-BLR115-1 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968784 0.0001798
1261 EU-NG-2 RAC5-BLR115-1 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15901719 0.00145221
1262 EU-NG-2 RAC5-BLR115-1 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181734 0.0000166
1263 EU-NG-2 RAC5-BLR115-1 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17416168 0.00159052
1264 EU-NG-2 RAC5-BLR115-1 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19595165 0.02005435
1265 EU-NG-2 RAC5-BLR115-1 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23473966 0.00214374
1266 EU-NG-2 RAC5-BLR115-1 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20445067 0.00186713
1267 EU-NG-2 RAC5-BLR115-1 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43919033 0.00401087
1268 EU-NG-2 RAC5-BLR115-1 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52248505 0.00477155
1269 EU-NG-2 RAC5-BLR115-1 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93138639 0.00850581
1270 EU-NG-2 RAC5-BLR115-1 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34832336 0.00318104
1271 EU-NG-2 RAC5-BLR115-1 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00664547 0.01832553
1272 EU-NG-2 RAC5-BLR115-1 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49173267 0.01362313
1273 EU-NG-2 RAC5-BLR115-1 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.31190588 2.21289412
1274 EU-NG-2 RAC5-BLR115-1 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12494208 0.00114102
1275 EU-NG-2 RAC5-BLR115-1 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757225 0.00006915
1276 EU-NG-2 RAC5-BLR115-1 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
1277 EU-NG-2 RAC5-BLR115-1 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271674 0.00020746
1278 EU-NG-2 RAC5-BLR115-2 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514449 0.00013831
1279 EU-NG-2 RAC5-BLR115-2 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33317887 0.00304273
1280 EU-NG-2 RAC5-BLR115-2 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090867 0.0000083
1281 EU-NG-2 RAC5-BLR115-2 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08329472 0.00076068
1282 EU-NG-2 RAC5-BLR115-2 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424046 0.00003873
1283 EU-NG-2 RAC5-BLR115-2 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636069 0.00005809
1284 EU-NG-2 RAC5-BLR115-2 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0643641 0.0005878
1285 EU-NG-2 RAC5-BLR115-2 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786124 0.00034576
1286 EU-NG-2 RAC5-BLR115-2 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877454 0.00026278
1287 EU-NG-2 RAC5-BLR115-2 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968784 0.0001798
1288 EU-NG-2 RAC5-BLR115-2 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15901719 0.00145221
1289 EU-NG-2 RAC5-BLR115-2 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181734 0.0000166
1290 EU-NG-2 RAC5-BLR115-2 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17416168 0.00159052
1291 EU-NG-2 RAC5-BLR115-2 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19595165 0.02005435
1292 EU-NG-2 RAC5-BLR115-2 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23473966 0.00214374
1293 EU-NG-2 RAC5-BLR115-2 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20445067 0.00186713
1294 EU-NG-2 RAC5-BLR115-2 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43919033 0.00401087
1295 EU-NG-2 RAC5-BLR115-2 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52248505 0.00477155
1296 EU-NG-2 RAC5-BLR115-2 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93138639 0.00850581
1297 EU-NG-2 RAC5-BLR115-2 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34832336 0.00318104
1298 EU-NG-2 RAC5-BLR115-2 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00664547 0.01832553
1299 EU-NG-2 RAC5-BLR115-2 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49173267 0.01362313
1300 EU-NG-2 RAC5-BLR115-2 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.31190588 2.21289412
1301 EU-NG-2 RAC5-BLR115-2 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12494208 0.00114102
1302 EU-NG-2 RAC5-BLR115-2 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757225 0.00006915
1303 EU-NG-2 RAC5-BLR115-2 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
1304 EU-NG-2 RAC5-BLR115-2 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271674 0.00020746
1305 EU-NG-2 RAC5-BLR115-3 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514449 0.00013831
1306 EU-NG-2 RAC5-BLR115-3 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33317887 0.00304273
1307 EU-NG-2 RAC5-BLR115-3 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090867 0.0000083
1308 EU-NG-2 RAC5-BLR115-3 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08329472 0.00076068
1309 EU-NG-2 RAC5-BLR115-3 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424046 0.00003873
1310 EU-NG-2 RAC5-BLR115-3 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636069 0.00005809
1311 EU-NG-2 RAC5-BLR115-3 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0643641 0.0005878
1312 EU-NG-2 RAC5-BLR115-3 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786124 0.00034576
1313 EU-NG-2 RAC5-BLR115-3 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877454 0.00026278
1314 EU-NG-2 RAC5-BLR115-3 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968784 0.0001798
1315 EU-NG-2 RAC5-BLR115-3 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15901719 0.00145221
1316 EU-NG-2 RAC5-BLR115-3 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181734 0.0000166
1317 EU-NG-2 RAC5-BLR115-3 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17416168 0.00159052
1318 EU-NG-2 RAC5-BLR115-3 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19595165 0.02005435
1319 EU-NG-2 RAC5-BLR115-3 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23473966 0.00214374
1320 EU-NG-2 RAC5-BLR115-3 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20445067 0.00186713
1321 EU-NG-2 RAC5-BLR115-3 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43919033 0.00401087
1322 EU-NG-2 RAC5-BLR115-3 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52248505 0.00477155
1323 EU-NG-2 RAC5-BLR115-3 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93138639 0.00850581
1324 EU-NG-2 RAC5-BLR115-3 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34832336 0.00318104
1325 EU-NG-2 RAC5-BLR115-3 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00664547 0.01832553
1326 EU-NG-2 RAC5-BLR115-3 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49173267 0.01362313
1327 EU-NG-2 RAC5-BLR115-3 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.31190588 2.21289412
1328 EU-NG-2 RAC5-BLR115-3 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12494208 0.00114102
1329 EU-NG-2 RAC5-BLR115-3 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757225 0.00006915
1330 EU-NG-2 RAC5-BLR115-3 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
1331 EU-NG-2 RAC5-BLR115-3 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271674 0.00020746
1332 EU-NG-2 RAC5-BLR115-4 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514449 0.00013831
1333 EU-NG-2 RAC5-BLR115-4 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33317887 0.00304273
1334 EU-NG-2 RAC5-BLR115-4 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090867 0.0000083
1335 EU-NG-2 RAC5-BLR115-4 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08329472 0.00076068
1336 EU-NG-2 RAC5-BLR115-4 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424046 0.00003873
1337 EU-NG-2 RAC5-BLR115-4 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636069 0.00005809
1338 EU-NG-2 RAC5-BLR115-4 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0643641 0.0005878
1339 EU-NG-2 RAC5-BLR115-4 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786124 0.00034576
1340 EU-NG-2 RAC5-BLR115-4 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877454 0.00026278
1341 EU-NG-2 RAC5-BLR115-4 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968784 0.0001798
1342 EU-NG-2 RAC5-BLR115-4 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15901719 0.00145221
1343 EU-NG-2 RAC5-BLR115-4 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181734 0.0000166
1344 EU-NG-2 RAC5-BLR115-4 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17416168 0.00159052
1345 EU-NG-2 RAC5-BLR115-4 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19595165 0.02005435
1346 EU-NG-2 RAC5-BLR115-4 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23473966 0.00214374
1347 EU-NG-2 RAC5-BLR115-4 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20445067 0.00186713
1348 EU-NG-2 RAC5-BLR115-4 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43919033 0.00401087
1349 EU-NG-2 RAC5-BLR115-4 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52248505 0.00477155
1350 EU-NG-2 RAC5-BLR115-4 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93138639 0.00850581
1351 EU-NG-2 RAC5-BLR115-4 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34832336 0.00318104
1352 EU-NG-2 RAC5-BLR115-4 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00664547 0.01832553
1353 EU-NG-2 RAC5-BLR115-4 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49173267 0.01362313
1354 EU-NG-2 RAC5-BLR115-4 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.31190588 2.21289412
1355 EU-NG-2 RAC5-BLR115-4 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12494208 0.00114102
1356 EU-NG-2 RAC5-BLR115-4 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757225 0.00006915
1357 EU-NG-2 RAC5-BLR115-4 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
1358 EU-NG-2 RAC5-BLR115-4 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271674 0.00020746
1359 EU-NG-2 F15-BLR28-1-1 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01078098 0.00009846
1360 EU-NG-2 F15-BLR28-1-1 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23718164 0.00216604
1361 EU-NG-2 F15-BLR28-1-1 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00064686 0.00000591
1362 EU-NG-2 F15-BLR28-1-1 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.05929541 0.00054151
1363 EU-NG-2 F15-BLR28-1-1 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00301868 0.00002757
1364 EU-NG-2 F15-BLR28-1-1 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00452801 0.00004135
1365 EU-NG-2 F15-BLR28-1-1 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04581918 0.00041844
1366 EU-NG-2 F15-BLR28-1-1 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02695246 0.00024614
1367 EU-NG-2 F15-BLR28-1-1 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02048387 0.00018707
1368 EU-NG-2 F15-BLR28-1-1 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01401528 0.00012799
1369 EU-NG-2 F15-BLR28-1-1 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.11320033 0.00103379
1370 EU-NG-2 F15-BLR28-1-1 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00129372 0.00001181
1371 EU-NG-2 F15-BLR28-1-1 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12398131 0.00113225
1372 EU-NG-2 F15-BLR28-1-1 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.56324261 0.01427619
1373 EU-NG-2 F15-BLR28-1-1 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16710524 0.00152608
1374 EU-NG-2 F15-BLR28-1-1 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.14554328 0.00132916
1375 EU-NG-2 F15-BLR28-1-1 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.31264852 0.00285524
1376 EU-NG-2 F15-BLR28-1-1 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.37194393 0.00339675
1377 EU-NG-2 F15-BLR28-1-1 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.66303049 0.00605507
1378 EU-NG-2 F15-BLR28-1-1 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24796262 0.0022645
1379 EU-NG-2 F15-BLR28-1-1 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.42848032 0.01304548
1380 EU-NG-2 F15-BLR28-1-1 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.06192688 0.00969796
1381 EU-NG-2 F15-BLR28-1-1 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 172.49573647 1.57530353
1382 EU-NG-2 F15-BLR28-1-1 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08894311 0.00081227
1383 EU-NG-2 F15-BLR28-1-1 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00539049 0.00004923
1384 EU-NG-2 F15-BLR28-1-1 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00006469 0.00000059
1385 EU-NG-2 F15-BLR28-1-1 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01617148 0.00014768
1386 EU-NG-2 F15-BLR28-1-2 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01078098 0.00009846
1387 EU-NG-2 F15-BLR28-1-2 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23718164 0.00216604
1388 EU-NG-2 F15-BLR28-1-2 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00064686 0.00000591
1389 EU-NG-2 F15-BLR28-1-2 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.05929541 0.00054151
1390 EU-NG-2 F15-BLR28-1-2 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00301868 0.00002757
1391 EU-NG-2 F15-BLR28-1-2 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00452801 0.00004135
1392 EU-NG-2 F15-BLR28-1-2 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04581918 0.00041844
1393 EU-NG-2 F15-BLR28-1-2 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02695246 0.00024614
1394 EU-NG-2 F15-BLR28-1-2 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02048387 0.00018707
1395 EU-NG-2 F15-BLR28-1-2 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01401528 0.00012799
1396 EU-NG-2 F15-BLR28-1-2 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.11320033 0.00103379
1397 EU-NG-2 F15-BLR28-1-2 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00129372 0.00001181
1398 EU-NG-2 F15-BLR28-1-2 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12398131 0.00113225
1399 EU-NG-2 F15-BLR28-1-2 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.56324261 0.01427619
1400 EU-NG-2 F15-BLR28-1-2 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16710524 0.00152608
1401 EU-NG-2 F15-BLR28-1-2 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.14554328 0.00132916
1402 EU-NG-2 F15-BLR28-1-2 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.31264852 0.00285524
1403 EU-NG-2 F15-BLR28-1-2 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.37194393 0.00339675
1404 EU-NG-2 F15-BLR28-1-2 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.66303049 0.00605507
1405 EU-NG-2 F15-BLR28-1-2 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24796262 0.0022645
1406 EU-NG-2 F15-BLR28-1-2 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.42848032 0.01304548
1407 EU-NG-2 F15-BLR28-1-2 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.06192688 0.00969796
1408 EU-NG-2 F15-BLR28-1-2 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 172.49573647 1.57530353
1409 EU-NG-2 F15-BLR28-1-2 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08894311 0.00081227
1410 EU-NG-2 F15-BLR28-1-2 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00539049 0.00004923
1411 EU-NG-2 F15-BLR28-1-2 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00006469 0.00000059
1412 EU-NG-2 F15-BLR28-1-2 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01617148 0.00014768
1413 EU-NG-2 F15-BLR28-1-3 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01078098 0.00009846
1414 EU-NG-2 F15-BLR28-1-3 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23718164 0.00216604
1415 EU-NG-2 F15-BLR28-1-3 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00064686 0.00000591
1416 EU-NG-2 F15-BLR28-1-3 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.05929541 0.00054151
1417 EU-NG-2 F15-BLR28-1-3 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00301868 0.00002757
1418 EU-NG-2 F15-BLR28-1-3 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00452801 0.00004135
1419 EU-NG-2 F15-BLR28-1-3 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04581918 0.00041844
1420 EU-NG-2 F15-BLR28-1-3 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02695246 0.00024614
1421 EU-NG-2 F15-BLR28-1-3 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02048387 0.00018707
1422 EU-NG-2 F15-BLR28-1-3 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01401528 0.00012799
1423 EU-NG-2 F15-BLR28-1-3 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.11320033 0.00103379
1424 EU-NG-2 F15-BLR28-1-3 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00129372 0.00001181
1425 EU-NG-2 F15-BLR28-1-3 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12398131 0.00113225
1426 EU-NG-2 F15-BLR28-1-3 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.56324261 0.01427619
1427 EU-NG-2 F15-BLR28-1-3 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.16710524 0.00152608
1428 EU-NG-2 F15-BLR28-1-3 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.14554328 0.00132916
1429 EU-NG-2 F15-BLR28-1-3 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.31264852 0.00285524
1430 EU-NG-2 F15-BLR28-1-3 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.37194393 0.00339675
1431 EU-NG-2 F15-BLR28-1-3 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.66303049 0.00605507
1432 EU-NG-2 F15-BLR28-1-3 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24796262 0.0022645
1433 EU-NG-2 F15-BLR28-1-3 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.42848032 0.01304548
1434 EU-NG-2 F15-BLR28-1-3 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.06192688 0.00969796
1435 EU-NG-2 F15-BLR28-1-3 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 172.49573647 1.57530353
1436 EU-NG-2 F15-BLR28-1-3 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08894311 0.00081227
1437 EU-NG-2 F15-BLR28-1-3 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00539049 0.00004923
1438 EU-NG-2 F15-BLR28-1-3 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00006469 0.00000059
1439 EU-NG-2 F15-BLR28-1-3 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01617148 0.00014768
1440 EU-NG-2 RAC5-BLR115-5 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514449 0.00013831
1441 EU-NG-2 RAC5-BLR115-5 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33317887 0.00304273
1442 EU-NG-2 RAC5-BLR115-5 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090867 0.0000083
1443 EU-NG-2 RAC5-BLR115-5 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08329472 0.00076068
1444 EU-NG-2 RAC5-BLR115-5 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424046 0.00003873
1445 EU-NG-2 RAC5-BLR115-5 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636069 0.00005809
1446 EU-NG-2 RAC5-BLR115-5 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0643641 0.0005878
1447 EU-NG-2 RAC5-BLR115-5 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786124 0.00034576
1448 EU-NG-2 RAC5-BLR115-5 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877454 0.00026278
1449 EU-NG-2 RAC5-BLR115-5 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968784 0.0001798
1450 EU-NG-2 RAC5-BLR115-5 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15901719 0.00145221
1451 EU-NG-2 RAC5-BLR115-5 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181734 0.0000166
1452 EU-NG-2 RAC5-BLR115-5 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17416168 0.00159052
1453 EU-NG-2 RAC5-BLR115-5 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19595165 0.02005435
1454 EU-NG-2 RAC5-BLR115-5 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23473966 0.00214374
1455 EU-NG-2 RAC5-BLR115-5 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20445067 0.00186713
1456 EU-NG-2 RAC5-BLR115-5 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43919033 0.00401087
1457 EU-NG-2 RAC5-BLR115-5 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52248505 0.00477155
1458 EU-NG-2 RAC5-BLR115-5 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93138639 0.00850581
1459 EU-NG-2 RAC5-BLR115-5 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34832336 0.00318104
1460 EU-NG-2 RAC5-BLR115-5 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00664547 0.01832553
1461 EU-NG-2 RAC5-BLR115-5 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49173267 0.01362313
1462 EU-NG-2 RAC5-BLR115-5 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.31190588 2.21289412
1463 EU-NG-2 RAC5-BLR115-5 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12494208 0.00114102
1464 EU-NG-2 RAC5-BLR115-5 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757225 0.00006915
1465 EU-NG-2 RAC5-BLR115-5 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
1466 EU-NG-2 RAC5-BLR115-5 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271674 0.00020746
1467 EU-NG-2 RAC5-BLR115-6 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514449 0.00013831
1468 EU-NG-2 RAC5-BLR115-6 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33317887 0.00304273
1469 EU-NG-2 RAC5-BLR115-6 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090867 0.0000083
1470 EU-NG-2 RAC5-BLR115-6 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08329472 0.00076068
1471 EU-NG-2 RAC5-BLR115-6 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424046 0.00003873
1472 EU-NG-2 RAC5-BLR115-6 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636069 0.00005809
1473 EU-NG-2 RAC5-BLR115-6 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0643641 0.0005878
1474 EU-NG-2 RAC5-BLR115-6 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786124 0.00034576
1475 EU-NG-2 RAC5-BLR115-6 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877454 0.00026278
1476 EU-NG-2 RAC5-BLR115-6 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968784 0.0001798
1477 EU-NG-2 RAC5-BLR115-6 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15901719 0.00145221
1478 EU-NG-2 RAC5-BLR115-6 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181734 0.0000166
1479 EU-NG-2 RAC5-BLR115-6 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17416168 0.00159052
1480 EU-NG-2 RAC5-BLR115-6 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19595165 0.02005435
1481 EU-NG-2 RAC5-BLR115-6 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23473966 0.00214374
1482 EU-NG-2 RAC5-BLR115-6 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20445067 0.00186713
1483 EU-NG-2 RAC5-BLR115-6 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43919033 0.00401087
1484 EU-NG-2 RAC5-BLR115-6 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52248505 0.00477155
1485 EU-NG-2 RAC5-BLR115-6 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93138639 0.00850581
1486 EU-NG-2 RAC5-BLR115-6 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34832336 0.00318104
1487 EU-NG-2 RAC5-BLR115-6 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00664547 0.01832553
1488 EU-NG-2 RAC5-BLR115-6 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49173267 0.01362313
1489 EU-NG-2 RAC5-BLR115-6 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.31190588 2.21289412
1490 EU-NG-2 RAC5-BLR115-6 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12494208 0.00114102
1491 EU-NG-2 RAC5-BLR115-6 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757225 0.00006915
1492 EU-NG-2 RAC5-BLR115-6 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
1493 EU-NG-2 RAC5-BLR115-6 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271674 0.00020746
1494 EU-NG-2 RAC5-BLR115-7 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514449 0.00013831
1495 EU-NG-2 RAC5-BLR115-7 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33317887 0.00304273
1496 EU-NG-2 RAC5-BLR115-7 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090867 0.0000083
1497 EU-NG-2 RAC5-BLR115-7 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08329472 0.00076068
1498 EU-NG-2 RAC5-BLR115-7 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424046 0.00003873
1499 EU-NG-2 RAC5-BLR115-7 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636069 0.00005809
1500 EU-NG-2 RAC5-BLR115-7 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0643641 0.0005878
1501 EU-NG-2 RAC5-BLR115-7 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786124 0.00034576
1502 EU-NG-2 RAC5-BLR115-7 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877454 0.00026278
1503 EU-NG-2 RAC5-BLR115-7 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968784 0.0001798
1504 EU-NG-2 RAC5-BLR115-7 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15901719 0.00145221
1505 EU-NG-2 RAC5-BLR115-7 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181734 0.0000166
1506 EU-NG-2 RAC5-BLR115-7 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17416168 0.00159052
1507 EU-NG-2 RAC5-BLR115-7 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19595165 0.02005435
1508 EU-NG-2 RAC5-BLR115-7 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23473966 0.00214374
1509 EU-NG-2 RAC5-BLR115-7 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20445067 0.00186713
1510 EU-NG-2 RAC5-BLR115-7 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43919033 0.00401087
1511 EU-NG-2 RAC5-BLR115-7 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52248505 0.00477155
1512 EU-NG-2 RAC5-BLR115-7 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93138639 0.00850581
1513 EU-NG-2 RAC5-BLR115-7 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34832336 0.00318104
1514 EU-NG-2 RAC5-BLR115-7 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00664547 0.01832553
1515 EU-NG-2 RAC5-BLR115-7 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49173267 0.01362313
1516 EU-NG-2 RAC5-BLR115-7 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.31190588 2.21289412
1517 EU-NG-2 RAC5-BLR115-7 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12494208 0.00114102
1518 EU-NG-2 RAC5-BLR115-7 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757225 0.00006915
1519 EU-NG-2 RAC5-BLR115-7 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
1520 EU-NG-2 RAC5-BLR115-7 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271674 0.00020746
1521 EU-NG-2 RAC5-BLR115-8 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01514449 0.00013831
1522 EU-NG-2 RAC5-BLR115-8 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.33317887 0.00304273
1523 EU-NG-2 RAC5-BLR115-8 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00090867 0.0000083
1524 EU-NG-2 RAC5-BLR115-8 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.08329472 0.00076068
1525 EU-NG-2 RAC5-BLR115-8 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00424046 0.00003873
1526 EU-NG-2 RAC5-BLR115-8 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00636069 0.00005809
1527 EU-NG-2 RAC5-BLR115-8 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.0643641 0.0005878
1528 EU-NG-2 RAC5-BLR115-8 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03786124 0.00034576
1529 EU-NG-2 RAC5-BLR115-8 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02877454 0.00026278
1530 EU-NG-2 RAC5-BLR115-8 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01968784 0.0001798
1531 EU-NG-2 RAC5-BLR115-8 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.15901719 0.00145221
1532 EU-NG-2 RAC5-BLR115-8 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00181734 0.0000166
1533 EU-NG-2 RAC5-BLR115-8 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.17416168 0.00159052
1534 EU-NG-2 RAC5-BLR115-8 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.19595165 0.02005435
1535 EU-NG-2 RAC5-BLR115-8 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.23473966 0.00214374
1536 EU-NG-2 RAC5-BLR115-8 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.20445067 0.00186713
1537 EU-NG-2 RAC5-BLR115-8 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.43919033 0.00401087
1538 EU-NG-2 RAC5-BLR115-8 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.52248505 0.00477155
1539 EU-NG-2 RAC5-BLR115-8 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.93138639 0.00850581
1540 EU-NG-2 RAC5-BLR115-8 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.34832336 0.00318104
1541 EU-NG-2 RAC5-BLR115-8 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.00664547 0.01832553
1542 EU-NG-2 RAC5-BLR115-8 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.49173267 0.01362313
1543 EU-NG-2 RAC5-BLR115-8 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 242.31190588 2.21289412
1544 EU-NG-2 RAC5-BLR115-8 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12494208 0.00114102
1545 EU-NG-2 RAC5-BLR115-8 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00757225 0.00006915
1546 EU-NG-2 RAC5-BLR115-8 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00009087 0.00000083
1547 EU-NG-2 RAC5-BLR115-8 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02271674 0.00020746
1548 EU-NG-2 N2-BLR117-1A-30 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02349741 0.00021459
1549 EU-NG-2 N2-BLR117-1A-30 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.51694306 0.00472094
1550 EU-NG-2 N2-BLR117-1A-30 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00140984 0.00001288
1551 EU-NG-2 N2-BLR117-1A-30 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12923576 0.00118024
1552 EU-NG-2 N2-BLR117-1A-30 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00657928 0.00006008
1553 EU-NG-2 N2-BLR117-1A-30 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00986891 0.00009013
1554 EU-NG-2 N2-BLR117-1A-30 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.099864 0.000912
1555 EU-NG-2 N2-BLR117-1A-30 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.05874353 0.00053647
1556 EU-NG-2 N2-BLR117-1A-30 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04464508 0.00040772
1557 EU-NG-2 N2-BLR117-1A-30 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03054664 0.00027896
1558 EU-NG-2 N2-BLR117-1A-30 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24672282 0.00225318
1559 EU-NG-2 N2-BLR117-1A-30 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00281969 0.00002575
1560 EU-NG-2 N2-BLR117-1A-30 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.27022024 0.00246776
1561 EU-NG-2 N2-BLR117-1A-30 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 3.40712471 0.03111529
1562 EU-NG-2 N2-BLR117-1A-30 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36420988 0.00332612
1563 EU-NG-2 N2-BLR117-1A-30 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.31721506 0.00289694
1564 EU-NG-2 N2-BLR117-1A-30 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.68142494 0.00622306
1565 EU-NG-2 N2-BLR117-1A-30 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.81066071 0.00740329
1566 EU-NG-2 N2-BLR117-1A-30 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.44509082 0.01319718
1567 EU-NG-2 N2-BLR117-1A-30 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.54044047 0.00493553
1568 EU-NG-2 N2-BLR117-1A-30 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 3.11340706 0.02843294
1569 EU-NG-2 N2-BLR117-1A-30 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.31449506 0.02113694
1570 EU-NG-2 N2-BLR117-1A-30 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 375.95858824 3.43341176
1571 EU-NG-2 N2-BLR117-1A-30 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.19385365 0.00177035
1572 EU-NG-2 N2-BLR117-1A-30 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01174871 0.00010729
1573 EU-NG-2 N2-BLR117-1A-30 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00014098 0.00000129
1574 EU-NG-2 N2-BLR117-1A-30 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03524612 0.00032188
1575 EU-NG-2 N2-BLR117-1B-30 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.02349741 0.00021459
1576 EU-NG-2 N2-BLR117-1B-30 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.51694306 0.00472094
1577 EU-NG-2 N2-BLR117-1B-30 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00140984 0.00001288
1578 EU-NG-2 N2-BLR117-1B-30 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.12923576 0.00118024
1579 EU-NG-2 N2-BLR117-1B-30 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00657928 0.00006008
1580 EU-NG-2 N2-BLR117-1B-30 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00986891 0.00009013
1581 EU-NG-2 N2-BLR117-1B-30 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.099864 0.000912
1582 EU-NG-2 N2-BLR117-1B-30 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.05874353 0.00053647
1583 EU-NG-2 N2-BLR117-1B-30 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.04464508 0.00040772
1584 EU-NG-2 N2-BLR117-1B-30 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03054664 0.00027896
1585 EU-NG-2 N2-BLR117-1B-30 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.24672282 0.00225318
1586 EU-NG-2 N2-BLR117-1B-30 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00281969 0.00002575
1587 EU-NG-2 N2-BLR117-1B-30 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.27022024 0.00246776
1588 EU-NG-2 N2-BLR117-1B-30 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 3.40712471 0.03111529
1589 EU-NG-2 N2-BLR117-1B-30 75-07-0 Acetaldehyde     No No 0.0031 0.0031 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.36420988 0.00332612
1590 EU-NG-2 N2-BLR117-1B-30 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.31721506 0.00289694
1591 EU-NG-2 N2-BLR117-1B-30 71-43-2 Benzene     No No 0.0058 0.0058 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.68142494 0.00622306
1592 EU-NG-2 N2-BLR117-1B-30 100-41-4 Ethylbenzene     No No 0.0069 0.0069 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.81066071 0.00740329
1593 EU-NG-2 N2-BLR117-1B-30 50-00-0 Formaldehyde     No No 0.0123 0.0123 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 1.44509082 0.01319718
1594 EU-NG-2 N2-BLR117-1B-30 110-54-3 Hexane     No No 0.0046 0.0046 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.54044047 0.00493553
1595 EU-NG-2 N2-BLR117-1B-30 108-88-3 Toluene     No No 0.0265 0.0265 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 3.11340706 0.02843294
1596 EU-NG-2 N2-BLR117-1B-30 1330-20-7 Xylene (mixed isomers)     No No 0.0197 0.0197 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 2.31449506 0.02113694
1597 EU-NG-2 N2-BLR117-1B-30 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 375.95858824 3.43341176
1598 EU-NG-2 N2-BLR117-1B-30 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.19385365 0.00177035
1599 EU-NG-2 N2-BLR117-1B-30 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.01174871 0.00010729
1600 EU-NG-2 N2-BLR117-1B-30 50-32-8 Benzo(a)pyrene     No No 0.0000012 0.0000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.00014098 0.00000129
1601 EU-NG-2 N2-BLR117-1B-30 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, 10 - 100 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (b). The value for the ammonia emission factor reflects no SCR or SNCR control. 0.03524612 0.00032188
1602 EU-NG-3 F20-VOC138-1-100 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1603 EU-NG-3 F20-VOC138-1-100 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1604 EU-NG-3 F20-VOC138-1-100 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1605 EU-NG-3 F20-VOC138-1-100 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1606 EU-NG-3 F20-VOC138-1-100 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1607 EU-NG-3 F20-VOC138-1-100 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1608 EU-NG-3 F20-VOC138-1-100 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1609 EU-NG-3 F20-VOC138-1-100 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1610 EU-NG-3 F20-VOC138-1-100 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1611 EU-NG-3 F20-VOC138-1-100 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1612 EU-NG-3 F20-VOC138-1-100 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1613 EU-NG-3 F20-VOC138-1-100 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1614 EU-NG-3 F20-VOC138-1-100 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1615 EU-NG-3 F20-VOC138-1-100 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1616 EU-NG-3 F20-VOC138-1-100 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1617 EU-NG-3 F20-VOC138-1-100 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1618 EU-NG-3 F20-VOC138-1-100 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1619 EU-NG-3 F20-VOC138-1-100 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1620 EU-NG-3 F20-VOC138-1-100 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1621 EU-NG-3 F20-VOC138-1-100 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1622 EU-NG-3 F20-VOC138-1-100 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1623 EU-NG-3 F20-VOC138-1-100 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1624 EU-NG-3 F20-VOC138-1-100 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1625 EU-NG-3 F20-VOC138-1-100 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1626 EU-NG-3 F20-VOC138-1-100 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1627 EU-NG-3 F20-VOC138-1-100 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1628 EU-NG-3 F20-VOC138-1-100 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1629 EU-NG-3 F20-VOC138-2-100 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1630 EU-NG-3 F20-VOC138-2-100 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1631 EU-NG-3 F20-VOC138-2-100 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1632 EU-NG-3 F20-VOC138-2-100 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1633 EU-NG-3 F20-VOC138-2-100 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1634 EU-NG-3 F20-VOC138-2-100 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1635 EU-NG-3 F20-VOC138-2-100 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1636 EU-NG-3 F20-VOC138-2-100 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1637 EU-NG-3 F20-VOC138-2-100 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1638 EU-NG-3 F20-VOC138-2-100 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1639 EU-NG-3 F20-VOC138-2-100 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1640 EU-NG-3 F20-VOC138-2-100 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1641 EU-NG-3 F20-VOC138-2-100 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1642 EU-NG-3 F20-VOC138-2-100 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1643 EU-NG-3 F20-VOC138-2-100 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1644 EU-NG-3 F20-VOC138-2-100 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1645 EU-NG-3 F20-VOC138-2-100 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1646 EU-NG-3 F20-VOC138-2-100 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1647 EU-NG-3 F20-VOC138-2-100 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1648 EU-NG-3 F20-VOC138-2-100 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1649 EU-NG-3 F20-VOC138-2-100 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1650 EU-NG-3 F20-VOC138-2-100 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1651 EU-NG-3 F20-VOC138-2-100 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1652 EU-NG-3 F20-VOC138-2-100 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1653 EU-NG-3 F20-VOC138-2-100 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1654 EU-NG-3 F20-VOC138-2-100 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1655 EU-NG-3 F20-VOC138-2-100 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1656 EU-NG-3 F20-VOC138-3-100 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1657 EU-NG-3 F20-VOC138-3-100 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1658 EU-NG-3 F20-VOC138-3-100 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1659 EU-NG-3 F20-VOC138-3-100 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1660 EU-NG-3 F20-VOC138-3-100 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1661 EU-NG-3 F20-VOC138-3-100 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1662 EU-NG-3 F20-VOC138-3-100 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1663 EU-NG-3 F20-VOC138-3-100 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1664 EU-NG-3 F20-VOC138-3-100 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1665 EU-NG-3 F20-VOC138-3-100 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1666 EU-NG-3 F20-VOC138-3-100 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1667 EU-NG-3 F20-VOC138-3-100 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1668 EU-NG-3 F20-VOC138-3-100 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1669 EU-NG-3 F20-VOC138-3-100 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1670 EU-NG-3 F20-VOC138-3-100 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1671 EU-NG-3 F20-VOC138-3-100 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1672 EU-NG-3 F20-VOC138-3-100 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1673 EU-NG-3 F20-VOC138-3-100 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1674 EU-NG-3 F20-VOC138-3-100 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1675 EU-NG-3 F20-VOC138-3-100 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1676 EU-NG-3 F20-VOC138-3-100 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1677 EU-NG-3 F20-VOC138-3-100 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1678 EU-NG-3 F20-VOC138-3-100 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1679 EU-NG-3 F20-VOC138-3-100 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1680 EU-NG-3 F20-VOC138-3-100 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1681 EU-NG-3 F20-VOC138-3-100 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1682 EU-NG-3 F20-VOC138-3-100 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1683 EU-NG-3 D1B-VOC138-4-100 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 #N/A
1684 EU-NG-3 D1B-VOC138-4-100 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 #N/A
1685 EU-NG-3 D1B-VOC138-4-100 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 #N/A
1686 EU-NG-3 D1B-VOC138-4-100 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 #N/A
1687 EU-NG-3 D1B-VOC138-4-100 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 #N/A
1688 EU-NG-3 D1B-VOC138-4-100 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 #N/A
1689 EU-NG-3 D1B-VOC138-4-100 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 #N/A
1690 EU-NG-3 D1B-VOC138-4-100 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 #N/A
1691 EU-NG-3 D1B-VOC138-4-100 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 #N/A
1692 EU-NG-3 D1B-VOC138-4-100 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 #N/A
1693 EU-NG-3 D1B-VOC138-4-100 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 #N/A
1694 EU-NG-3 D1B-VOC138-4-100 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 #N/A
1695 EU-NG-3 D1B-VOC138-4-100 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 #N/A
1696 EU-NG-3 D1B-VOC138-4-100 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 #N/A
1697 EU-NG-3 D1B-VOC138-4-100 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 #N/A
1698 EU-NG-3 D1B-VOC138-4-100 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 #N/A
1699 EU-NG-3 D1B-VOC138-4-100 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 #N/A
1700 EU-NG-3 D1B-VOC138-4-100 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 #N/A
1701 EU-NG-3 D1B-VOC138-4-100 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 #N/A
1702 EU-NG-3 D1B-VOC138-4-100 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 #N/A
1703 EU-NG-3 D1B-VOC138-4-100 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 #N/A
1704 EU-NG-3 D1B-VOC138-4-100 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 #N/A
1705 EU-NG-3 D1B-VOC138-4-100 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 #N/A
1706 EU-NG-3 D1B-VOC138-4-100 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 #N/A
1707 EU-NG-3 D1B-VOC138-4-100 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 #N/A
1708 EU-NG-3 D1B-VOC138-4-100 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 #N/A
1709 EU-NG-3 D1B-VOC138-4-100 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 #N/A
1710 EU-NG-3 D1B-VOC138-5-100 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1711 EU-NG-3 D1B-VOC138-5-100 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1712 EU-NG-3 D1B-VOC138-5-100 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1713 EU-NG-3 D1B-VOC138-5-100 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1714 EU-NG-3 D1B-VOC138-5-100 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. -- #N/A
1715 EU-NG-3 D1B-VOC138-5-100 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1716 EU-NG-3 D1B-VOC138-5-100 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1717 EU-NG-3 D1B-VOC138-5-100 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1718 EU-NG-3 D1B-VOC138-5-100 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1719 EU-NG-3 D1B-VOC138-5-100 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1720 EU-NG-3 D1B-VOC138-5-100 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1721 EU-NG-3 D1B-VOC138-5-100 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1722 EU-NG-3 D1B-VOC138-5-100 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1723 EU-NG-3 D1B-VOC138-5-100 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1724 EU-NG-3 D1B-VOC138-5-100 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1725 EU-NG-3 D1B-VOC138-5-100 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1726 EU-NG-3 D1B-VOC138-5-100 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1727 EU-NG-3 D1B-VOC138-5-100 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1728 EU-NG-3 D1B-VOC138-5-100 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1729 EU-NG-3 D1B-VOC138-5-100 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1730 EU-NG-3 D1B-VOC138-5-100 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1731 EU-NG-3 D1B-VOC138-5-100 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1732 EU-NG-3 D1B-VOC138-5-100 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1733 EU-NG-3 D1B-VOC138-5-100 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1734 EU-NG-3 D1B-VOC138-5-100 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1735 EU-NG-3 D1B-VOC138-5-100 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1736 EU-NG-3 D1B-VOC138-5-100 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. -- #N/A
1737 EU-NG-3 D1C-VOC138-1-120 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1738 EU-NG-3 D1C-VOC138-1-120 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1739 EU-NG-3 D1C-VOC138-1-120 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1740 EU-NG-3 D1C-VOC138-1-120 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1741 EU-NG-3 D1C-VOC138-1-120 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1742 EU-NG-3 D1C-VOC138-1-120 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1743 EU-NG-3 D1C-VOC138-1-120 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1744 EU-NG-3 D1C-VOC138-1-120 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1745 EU-NG-3 D1C-VOC138-1-120 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1746 EU-NG-3 D1C-VOC138-1-120 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1747 EU-NG-3 D1C-VOC138-1-120 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1748 EU-NG-3 D1C-VOC138-1-120 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1749 EU-NG-3 D1C-VOC138-1-120 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1750 EU-NG-3 D1C-VOC138-1-120 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1751 EU-NG-3 D1C-VOC138-1-120 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1752 EU-NG-3 D1C-VOC138-1-120 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1753 EU-NG-3 D1C-VOC138-1-120 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1754 EU-NG-3 D1C-VOC138-1-120 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1755 EU-NG-3 D1C-VOC138-1-120 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1756 EU-NG-3 D1C-VOC138-1-120 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1757 EU-NG-3 D1C-VOC138-1-120 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1758 EU-NG-3 D1C-VOC138-1-120 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1759 EU-NG-3 D1C-VOC138-1-120 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1760 EU-NG-3 D1C-VOC138-1-120 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1761 EU-NG-3 D1C-VOC138-1-120 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1762 EU-NG-3 D1C-VOC138-1-120 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1763 EU-NG-3 D1C-VOC138-1-120 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1764 EU-NG-3 D1C-VOC138-2-120 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1765 EU-NG-3 D1C-VOC138-2-120 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1766 EU-NG-3 D1C-VOC138-2-120 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1767 EU-NG-3 D1C-VOC138-2-120 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1768 EU-NG-3 D1C-VOC138-2-120 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1769 EU-NG-3 D1C-VOC138-2-120 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1770 EU-NG-3 D1C-VOC138-2-120 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1771 EU-NG-3 D1C-VOC138-2-120 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1772 EU-NG-3 D1C-VOC138-2-120 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1773 EU-NG-3 D1C-VOC138-2-120 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1774 EU-NG-3 D1C-VOC138-2-120 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1775 EU-NG-3 D1C-VOC138-2-120 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1776 EU-NG-3 D1C-VOC138-2-120 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1777 EU-NG-3 D1C-VOC138-2-120 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1778 EU-NG-3 D1C-VOC138-2-120 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1779 EU-NG-3 D1C-VOC138-2-120 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1780 EU-NG-3 D1C-VOC138-2-120 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1781 EU-NG-3 D1C-VOC138-2-120 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1782 EU-NG-3 D1C-VOC138-2-120 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1783 EU-NG-3 D1C-VOC138-2-120 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1784 EU-NG-3 D1C-VOC138-2-120 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1785 EU-NG-3 D1C-VOC138-2-120 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1786 EU-NG-3 D1C-VOC138-2-120 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1787 EU-NG-3 D1C-VOC138-2-120 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1788 EU-NG-3 D1C-VOC138-2-120 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1789 EU-NG-3 D1C-VOC138-2-120 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1790 EU-NG-3 D1C-VOC138-2-120 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1791 EU-NG-3 D1C-VOC138-3-120 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1792 EU-NG-3 D1C-VOC138-3-120 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1793 EU-NG-3 D1C-VOC138-3-120 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1794 EU-NG-3 D1C-VOC138-3-120 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1795 EU-NG-3 D1C-VOC138-3-120 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1796 EU-NG-3 D1C-VOC138-3-120 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1797 EU-NG-3 D1C-VOC138-3-120 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1798 EU-NG-3 D1C-VOC138-3-120 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1799 EU-NG-3 D1C-VOC138-3-120 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1800 EU-NG-3 D1C-VOC138-3-120 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1801 EU-NG-3 D1C-VOC138-3-120 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1802 EU-NG-3 D1C-VOC138-3-120 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1803 EU-NG-3 D1C-VOC138-3-120 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1804 EU-NG-3 D1C-VOC138-3-120 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1805 EU-NG-3 D1C-VOC138-3-120 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1806 EU-NG-3 D1C-VOC138-3-120 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1807 EU-NG-3 D1C-VOC138-3-120 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1808 EU-NG-3 D1C-VOC138-3-120 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1809 EU-NG-3 D1C-VOC138-3-120 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1810 EU-NG-3 D1C-VOC138-3-120 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1811 EU-NG-3 D1C-VOC138-3-120 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1812 EU-NG-3 D1C-VOC138-3-120 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1813 EU-NG-3 D1C-VOC138-3-120 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1814 EU-NG-3 D1C-VOC138-3-120 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1815 EU-NG-3 D1C-VOC138-3-120 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1816 EU-NG-3 D1C-VOC138-3-120 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1817 EU-NG-3 D1C-VOC138-3-120 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1818 EU-NG-3 VOC-138-1-120 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1819 EU-NG-3 VOC-138-1-120 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1820 EU-NG-3 VOC-138-1-120 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1821 EU-NG-3 VOC-138-1-120 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1822 EU-NG-3 VOC-138-1-120 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1823 EU-NG-3 VOC-138-1-120 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1824 EU-NG-3 VOC-138-1-120 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1825 EU-NG-3 VOC-138-1-120 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1826 EU-NG-3 VOC-138-1-120 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1827 EU-NG-3 VOC-138-1-120 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1828 EU-NG-3 VOC-138-1-120 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1829 EU-NG-3 VOC-138-1-120 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1830 EU-NG-3 VOC-138-1-120 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1831 EU-NG-3 VOC-138-1-120 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1832 EU-NG-3 VOC-138-1-120 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1833 EU-NG-3 VOC-138-1-120 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1834 EU-NG-3 VOC-138-1-120 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1835 EU-NG-3 VOC-138-1-120 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1836 EU-NG-3 VOC-138-1-120 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1837 EU-NG-3 VOC-138-1-120 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1838 EU-NG-3 VOC-138-1-120 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1839 EU-NG-3 VOC-138-1-120 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1840 EU-NG-3 VOC-138-1-120 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1841 EU-NG-3 VOC-138-1-120 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1842 EU-NG-3 VOC-138-1-120 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1843 EU-NG-3 VOC-138-1-120 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1844 EU-NG-3 VOC-138-1-120 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1845 EU-NG-3 VOC-138-2-120 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1846 EU-NG-3 VOC-138-2-120 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1847 EU-NG-3 VOC-138-2-120 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1848 EU-NG-3 VOC-138-2-120 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1849 EU-NG-3 VOC-138-2-120 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1850 EU-NG-3 VOC-138-2-120 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1851 EU-NG-3 VOC-138-2-120 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1852 EU-NG-3 VOC-138-2-120 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1853 EU-NG-3 VOC-138-2-120 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1854 EU-NG-3 VOC-138-2-120 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1855 EU-NG-3 VOC-138-2-120 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1856 EU-NG-3 VOC-138-2-120 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1857 EU-NG-3 VOC-138-2-120 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1858 EU-NG-3 VOC-138-2-120 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1859 EU-NG-3 VOC-138-2-120 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1860 EU-NG-3 VOC-138-2-120 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1861 EU-NG-3 VOC-138-2-120 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1862 EU-NG-3 VOC-138-2-120 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1863 EU-NG-3 VOC-138-2-120 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1864 EU-NG-3 VOC-138-2-120 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1865 EU-NG-3 VOC-138-2-120 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1866 EU-NG-3 VOC-138-2-120 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1867 EU-NG-3 VOC-138-2-120 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1868 EU-NG-3 VOC-138-2-120 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1869 EU-NG-3 VOC-138-2-120 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1870 EU-NG-3 VOC-138-2-120 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1871 EU-NG-3 VOC-138-2-120 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1872 EU-NG-3 VOC-138-3-120 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1873 EU-NG-3 VOC-138-3-120 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1874 EU-NG-3 VOC-138-3-120 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1875 EU-NG-3 VOC-138-3-120 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1876 EU-NG-3 VOC-138-3-120 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1877 EU-NG-3 VOC-138-3-120 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1878 EU-NG-3 VOC-138-3-120 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1879 EU-NG-3 VOC-138-3-120 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1880 EU-NG-3 VOC-138-3-120 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1881 EU-NG-3 VOC-138-3-120 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1882 EU-NG-3 VOC-138-3-120 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1883 EU-NG-3 VOC-138-3-120 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1884 EU-NG-3 VOC-138-3-120 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1885 EU-NG-3 VOC-138-3-120 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1886 EU-NG-3 VOC-138-3-120 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1887 EU-NG-3 VOC-138-3-120 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1888 EU-NG-3 VOC-138-3-120 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1889 EU-NG-3 VOC-138-3-120 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1890 EU-NG-3 VOC-138-3-120 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1891 EU-NG-3 VOC-138-3-120 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1892 EU-NG-3 VOC-138-3-120 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1893 EU-NG-3 VOC-138-3-120 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1894 EU-NG-3 VOC-138-3-120 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1895 EU-NG-3 VOC-138-3-120 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1896 EU-NG-3 VOC-138-3-120 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1897 EU-NG-3 VOC-138-3-120 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1898 EU-NG-3 VOC-138-3-120 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1899 EU-NG-3 VOC-138-4-120 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
1900 EU-NG-3 VOC-138-4-120 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1901 EU-NG-3 VOC-138-4-120 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
1902 EU-NG-3 VOC-138-4-120 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
1903 EU-NG-3 VOC-138-4-120 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
1904 EU-NG-3 VOC-138-4-120 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
1905 EU-NG-3 VOC-138-4-120 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
1906 EU-NG-3 VOC-138-4-120 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
1907 EU-NG-3 VOC-138-4-120 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
1908 EU-NG-3 VOC-138-4-120 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
1909 EU-NG-3 VOC-138-4-120 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
1910 EU-NG-3 VOC-138-4-120 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
1911 EU-NG-3 VOC-138-4-120 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
1912 EU-NG-3 VOC-138-4-120 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
1913 EU-NG-3 VOC-138-4-120 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
1914 EU-NG-3 VOC-138-4-120 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
1915 EU-NG-3 VOC-138-4-120 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
1916 EU-NG-3 VOC-138-4-120 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
1917 EU-NG-3 VOC-138-4-120 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
1918 EU-NG-3 VOC-138-4-120 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
1919 EU-NG-3 VOC-138-4-120 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
1920 EU-NG-3 VOC-138-4-120 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
1921 EU-NG-3 VOC-138-4-120 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
1922 EU-NG-3 VOC-138-4-120 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
1923 EU-NG-3 VOC-138-4-120 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
1924 EU-NG-3 VOC-138-4-120 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
1925 EU-NG-3 VOC-138-4-120 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
1926 EU-NG-3 VOC-138-5-120 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
1927 EU-NG-3 VOC-138-5-120 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
1928 EU-NG-3 VOC-138-5-120 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
1929 EU-NG-3 VOC-138-5-120 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1930 EU-NG-3 VOC-138-5-120 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
1931 EU-NG-3 VOC-138-5-120 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
1932 EU-NG-3 VOC-138-5-120 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
1933 EU-NG-3 VOC-138-5-120 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
1934 EU-NG-3 VOC-138-5-120 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
1935 EU-NG-3 VOC-138-5-120 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
1936 EU-NG-3 VOC-138-5-120 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
1937 EU-NG-3 VOC-138-5-120 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
1938 EU-NG-3 VOC-138-5-120 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
1939 EU-NG-3 VOC-138-5-120 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
1940 EU-NG-3 VOC-138-5-120 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
1941 EU-NG-3 VOC-138-5-120 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
1942 EU-NG-3 VOC-138-5-120 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
1943 EU-NG-3 VOC-138-5-120 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
1944 EU-NG-3 VOC-138-5-120 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
1945 EU-NG-3 VOC-138-5-120 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
1946 EU-NG-3 VOC-138-5-120 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
1947 EU-NG-3 VOC-138-5-120 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
1948 EU-NG-3 VOC-138-5-120 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
1949 EU-NG-3 VOC-138-5-120 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
1950 EU-NG-3 VOC-138-5-120 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
1951 EU-NG-3 VOC-138-5-120 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
1952 EU-NG-3 VOC-138-5-120 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
1953 EU-NG-3 VOC-138-6-120 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
1954 EU-NG-3 VOC-138-6-120 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
1955 EU-NG-3 VOC-138-6-120 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
1956 EU-NG-3 VOC-138-6-120 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
1957 EU-NG-3 VOC-138-6-120 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
1958 EU-NG-3 VOC-138-6-120 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
1959 EU-NG-3 VOC-138-6-120 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
1960 EU-NG-3 VOC-138-6-120 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
1961 EU-NG-3 VOC-138-6-120 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
1962 EU-NG-3 VOC-138-6-120 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
1963 EU-NG-3 VOC-138-6-120 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
1964 EU-NG-3 VOC-138-6-120 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
1965 EU-NG-3 VOC-138-6-120 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
1966 EU-NG-3 VOC-138-6-120 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
1967 EU-NG-3 VOC-138-6-120 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
1968 EU-NG-3 VOC-138-6-120 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
1969 EU-NG-3 VOC-138-6-120 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
1970 EU-NG-3 VOC-138-6-120 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
1971 EU-NG-3 VOC-138-6-120 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
1972 EU-NG-3 VOC-138-6-120 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
1973 EU-NG-3 VOC-138-6-120 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
1974 EU-NG-3 VOC-138-6-120 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
1975 EU-NG-3 VOC-138-6-120 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
1976 EU-NG-3 VOC-138-6-120 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
1977 EU-NG-3 VOC-138-6-120 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
1978 EU-NG-3 VOC-138-6-120 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
1979 EU-NG-3 VOC-138-6-120 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
1980 EU-NG-3 D1XM1-VOC138-1-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00601176 0.00001647
1981 EU-NG-3 D1XM1-VOC138-1-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13225882 0.00036235
1982 EU-NG-3 D1XM1-VOC138-1-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00036071 0.00000099
1983 EU-NG-3 D1XM1-VOC138-1-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03306471 0.00009059
1984 EU-NG-3 D1XM1-VOC138-1-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00168329 0.00000461
1985 EU-NG-3 D1XM1-VOC138-1-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00252494 0.00000692
1986 EU-NG-3 D1XM1-VOC138-1-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02555 0.00007
1987 EU-NG-3 D1XM1-VOC138-1-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01502941 0.00004118
1988 EU-NG-3 D1XM1-VOC138-1-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01142235 0.00003129
1989 EU-NG-3 D1XM1-VOC138-1-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00781529 0.00002141
1990 EU-NG-3 D1XM1-VOC138-1-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06312353 0.00017294
1991 EU-NG-3 D1XM1-VOC138-1-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00072141 0.00000198
1992 EU-NG-3 D1XM1-VOC138-1-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06913529 0.00018941
1993 EU-NG-3 D1XM1-VOC138-1-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.87170588 0.00238824
1994 EU-NG-3 D1XM1-VOC138-1-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.12925294 0.00035412
1995 EU-NG-3 D1XM1-VOC138-1-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08115882 0.00022235
1996 EU-NG-3 D1XM1-VOC138-1-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24047059 0.00065882
1997 EU-NG-3 D1XM1-VOC138-1-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.28555882 0.00078235
1998 EU-NG-3 D1XM1-VOC138-1-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.511 0.0014
1999 EU-NG-3 D1XM1-VOC138-1-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18937059 0.00051882
2000 EU-NG-3 D1XM1-VOC138-1-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.10015294 0.00301412
2001 EU-NG-3 D1XM1-VOC138-1-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.8176 0.00224
2002 EU-NG-3 D1XM1-VOC138-1-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 96.18823529 0.26352941
2003 EU-NG-3 D1XM1-VOC138-1-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04959706 0.00013588
2004 EU-NG-3 D1XM1-VOC138-1-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00300588 0.00000824
2005 EU-NG-3 D1XM1-VOC138-1-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 30.06182941 0.08236118
2006 EU-NG-3 D1XM1-VOC138-1-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00901765 0.00002471
2007 EU-NG-3 D1XM1-VOC138-2-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00601176 0.00001647
2008 EU-NG-3 D1XM1-VOC138-2-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13225882 0.00036235
2009 EU-NG-3 D1XM1-VOC138-2-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00036071 0.00000099
2010 EU-NG-3 D1XM1-VOC138-2-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03306471 0.00009059
2011 EU-NG-3 D1XM1-VOC138-2-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00168329 0.00000461
2012 EU-NG-3 D1XM1-VOC138-2-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00252494 0.00000692
2013 EU-NG-3 D1XM1-VOC138-2-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02555 0.00007
2014 EU-NG-3 D1XM1-VOC138-2-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01502941 0.00004118
2015 EU-NG-3 D1XM1-VOC138-2-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01142235 0.00003129
2016 EU-NG-3 D1XM1-VOC138-2-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00781529 0.00002141
2017 EU-NG-3 D1XM1-VOC138-2-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06312353 0.00017294
2018 EU-NG-3 D1XM1-VOC138-2-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00072141 0.00000198
2019 EU-NG-3 D1XM1-VOC138-2-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06913529 0.00018941
2020 EU-NG-3 D1XM1-VOC138-2-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.87170588 0.00238824
2021 EU-NG-3 D1XM1-VOC138-2-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.12925294 0.00035412
2022 EU-NG-3 D1XM1-VOC138-2-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08115882 0.00022235
2023 EU-NG-3 D1XM1-VOC138-2-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24047059 0.00065882
2024 EU-NG-3 D1XM1-VOC138-2-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.28555882 0.00078235
2025 EU-NG-3 D1XM1-VOC138-2-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.511 0.0014
2026 EU-NG-3 D1XM1-VOC138-2-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18937059 0.00051882
2027 EU-NG-3 D1XM1-VOC138-2-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.10015294 0.00301412
2028 EU-NG-3 D1XM1-VOC138-2-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.8176 0.00224
2029 EU-NG-3 D1XM1-VOC138-2-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 96.18823529 0.26352941
2030 EU-NG-3 D1XM1-VOC138-2-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04959706 0.00013588
2031 EU-NG-3 D1XM1-VOC138-2-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00300588 0.00000824
2032 EU-NG-3 D1XM1-VOC138-2-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 30.06182941 0.08236118
2033 EU-NG-3 D1XM1-VOC138-2-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00901765 0.00002471
2034 EU-NG-3 D1XM1-VOC138-3-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00601176 0.00001647
2035 EU-NG-3 D1XM1-VOC138-3-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13225882 0.00036235
2036 EU-NG-3 D1XM1-VOC138-3-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00036071 0.00000099
2037 EU-NG-3 D1XM1-VOC138-3-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03306471 0.00009059
2038 EU-NG-3 D1XM1-VOC138-3-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00168329 0.00000461
2039 EU-NG-3 D1XM1-VOC138-3-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00252494 0.00000692
2040 EU-NG-3 D1XM1-VOC138-3-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02555 0.00007
2041 EU-NG-3 D1XM1-VOC138-3-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01502941 0.00004118
2042 EU-NG-3 D1XM1-VOC138-3-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01142235 0.00003129
2043 EU-NG-3 D1XM1-VOC138-3-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00781529 0.00002141
2044 EU-NG-3 D1XM1-VOC138-3-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06312353 0.00017294
2045 EU-NG-3 D1XM1-VOC138-3-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00072141 0.00000198
2046 EU-NG-3 D1XM1-VOC138-3-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06913529 0.00018941
2047 EU-NG-3 D1XM1-VOC138-3-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.87170588 0.00238824
2048 EU-NG-3 D1XM1-VOC138-3-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.12925294 0.00035412
2049 EU-NG-3 D1XM1-VOC138-3-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08115882 0.00022235
2050 EU-NG-3 D1XM1-VOC138-3-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24047059 0.00065882
2051 EU-NG-3 D1XM1-VOC138-3-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.28555882 0.00078235
2052 EU-NG-3 D1XM1-VOC138-3-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.511 0.0014
2053 EU-NG-3 D1XM1-VOC138-3-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18937059 0.00051882
2054 EU-NG-3 D1XM1-VOC138-3-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.10015294 0.00301412
2055 EU-NG-3 D1XM1-VOC138-3-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.8176 0.00224
2056 EU-NG-3 D1XM1-VOC138-3-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 96.18823529 0.26352941
2057 EU-NG-3 D1XM1-VOC138-3-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04959706 0.00013588
2058 EU-NG-3 D1XM1-VOC138-3-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00300588 0.00000824
2059 EU-NG-3 D1XM1-VOC138-3-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 30.06182941 0.08236118
2060 EU-NG-3 D1XM1-VOC138-3-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00901765 0.00002471
2061 EU-NG-3 D1XM1-VOC138-4-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00601176 0.00001647
2062 EU-NG-3 D1XM1-VOC138-4-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13225882 0.00036235
2063 EU-NG-3 D1XM1-VOC138-4-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00036071 0.00000099
2064 EU-NG-3 D1XM1-VOC138-4-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03306471 0.00009059
2065 EU-NG-3 D1XM1-VOC138-4-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00168329 0.00000461
2066 EU-NG-3 D1XM1-VOC138-4-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00252494 0.00000692
2067 EU-NG-3 D1XM1-VOC138-4-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02555 0.00007
2068 EU-NG-3 D1XM1-VOC138-4-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01502941 0.00004118
2069 EU-NG-3 D1XM1-VOC138-4-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01142235 0.00003129
2070 EU-NG-3 D1XM1-VOC138-4-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00781529 0.00002141
2071 EU-NG-3 D1XM1-VOC138-4-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06312353 0.00017294
2072 EU-NG-3 D1XM1-VOC138-4-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00072141 0.00000198
2073 EU-NG-3 D1XM1-VOC138-4-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06913529 0.00018941
2074 EU-NG-3 D1XM1-VOC138-4-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.87170588 0.00238824
2075 EU-NG-3 D1XM1-VOC138-4-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.12925294 0.00035412
2076 EU-NG-3 D1XM1-VOC138-4-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08115882 0.00022235
2077 EU-NG-3 D1XM1-VOC138-4-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24047059 0.00065882
2078 EU-NG-3 D1XM1-VOC138-4-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.28555882 0.00078235
2079 EU-NG-3 D1XM1-VOC138-4-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.511 0.0014
2080 EU-NG-3 D1XM1-VOC138-4-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18937059 0.00051882
2081 EU-NG-3 D1XM1-VOC138-4-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.10015294 0.00301412
2082 EU-NG-3 D1XM1-VOC138-4-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.8176 0.00224
2083 EU-NG-3 D1XM1-VOC138-4-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 96.18823529 0.26352941
2084 EU-NG-3 D1XM1-VOC138-4-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04959706 0.00013588
2085 EU-NG-3 D1XM1-VOC138-4-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00300588 0.00000824
2086 EU-NG-3 D1XM1-VOC138-4-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 30.06182941 0.08236118
2087 EU-NG-3 D1XM1-VOC138-4-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00901765 0.00002471
2088 EU-NG-3 D1XM1-VOC138-5-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.01374118
2089 EU-NG-3 D1XM1-VOC138-5-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.30230588
2090 EU-NG-3 D1XM1-VOC138-5-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00082447
2091 EU-NG-3 D1XM1-VOC138-5-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.07557647
2092 EU-NG-3 D1XM1-VOC138-5-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00384753
2093 EU-NG-3 D1XM1-VOC138-5-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00577129
2094 EU-NG-3 D1XM1-VOC138-5-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.0584
2095 EU-NG-3 D1XM1-VOC138-5-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.03435294
2096 EU-NG-3 D1XM1-VOC138-5-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.02610824
2097 EU-NG-3 D1XM1-VOC138-5-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.01786353
2098 EU-NG-3 D1XM1-VOC138-5-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.14428235
2099 EU-NG-3 D1XM1-VOC138-5-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00164894
2100 EU-NG-3 D1XM1-VOC138-5-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.15802353
2101 EU-NG-3 D1XM1-VOC138-5-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 1.99247059
2102 EU-NG-3 D1XM1-VOC138-5-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.29543529
2103 EU-NG-3 D1XM1-VOC138-5-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.18550588
2104 EU-NG-3 D1XM1-VOC138-5-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.54964706
2105 EU-NG-3 D1XM1-VOC138-5-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.65270588
2106 EU-NG-3 D1XM1-VOC138-5-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 1.168
2107 EU-NG-3 D1XM1-VOC138-5-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.43284706
2108 EU-NG-3 D1XM1-VOC138-5-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 2.51463529
2109 EU-NG-3 D1XM1-VOC138-5-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 1.8688
2110 EU-NG-3 D1XM1-VOC138-5-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 219.85882353
2111 EU-NG-3 D1XM1-VOC138-5-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.11336471
2112 EU-NG-3 D1XM1-VOC138-5-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00687059
2113 EU-NG-3 D1XM1-VOC138-5-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 68.71275294
2114 EU-NG-3 D1XM1-VOC138-5-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.02061176
2115 EU-NG-3 D1XM1-VOC138-6-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.01374118
2116 EU-NG-3 D1XM1-VOC138-6-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.30230588
2117 EU-NG-3 D1XM1-VOC138-6-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00082447
2118 EU-NG-3 D1XM1-VOC138-6-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.07557647
2119 EU-NG-3 D1XM1-VOC138-6-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00384753
2120 EU-NG-3 D1XM1-VOC138-6-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00577129
2121 EU-NG-3 D1XM1-VOC138-6-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.0584
2122 EU-NG-3 D1XM1-VOC138-6-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.03435294
2123 EU-NG-3 D1XM1-VOC138-6-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.02610824
2124 EU-NG-3 D1XM1-VOC138-6-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.01786353
2125 EU-NG-3 D1XM1-VOC138-6-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.14428235
2126 EU-NG-3 D1XM1-VOC138-6-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00164894
2127 EU-NG-3 D1XM1-VOC138-6-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.15802353
2128 EU-NG-3 D1XM1-VOC138-6-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 1.99247059
2129 EU-NG-3 D1XM1-VOC138-6-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.29543529
2130 EU-NG-3 D1XM1-VOC138-6-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.18550588
2131 EU-NG-3 D1XM1-VOC138-6-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.54964706
2132 EU-NG-3 D1XM1-VOC138-6-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.65270588
2133 EU-NG-3 D1XM1-VOC138-6-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 1.168
2134 EU-NG-3 D1XM1-VOC138-6-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.43284706
2135 EU-NG-3 D1XM1-VOC138-6-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 2.51463529
2136 EU-NG-3 D1XM1-VOC138-6-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 1.8688
2137 EU-NG-3 D1XM1-VOC138-6-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 219.85882353
2138 EU-NG-3 D1XM1-VOC138-6-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.11336471
2139 EU-NG-3 D1XM1-VOC138-6-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00687059
2140 EU-NG-3 D1XM1-VOC138-6-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 68.71275294
2141 EU-NG-3 D1XM1-VOC138-6-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.02061176
2142 EU-NG-3 D1XM1-VOC138-7-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.01374118
2143 EU-NG-3 D1XM1-VOC138-7-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.30230588
2144 EU-NG-3 D1XM1-VOC138-7-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00082447
2145 EU-NG-3 D1XM1-VOC138-7-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.07557647
2146 EU-NG-3 D1XM1-VOC138-7-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00384753
2147 EU-NG-3 D1XM1-VOC138-7-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00577129
2148 EU-NG-3 D1XM1-VOC138-7-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.0584
2149 EU-NG-3 D1XM1-VOC138-7-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.03435294
2150 EU-NG-3 D1XM1-VOC138-7-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.02610824
2151 EU-NG-3 D1XM1-VOC138-7-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.01786353
2152 EU-NG-3 D1XM1-VOC138-7-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.14428235
2153 EU-NG-3 D1XM1-VOC138-7-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00164894
2154 EU-NG-3 D1XM1-VOC138-7-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.15802353
2155 EU-NG-3 D1XM1-VOC138-7-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 1.99247059
2156 EU-NG-3 D1XM1-VOC138-7-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.29543529
2157 EU-NG-3 D1XM1-VOC138-7-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.18550588
2158 EU-NG-3 D1XM1-VOC138-7-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.54964706
2159 EU-NG-3 D1XM1-VOC138-7-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.65270588
2160 EU-NG-3 D1XM1-VOC138-7-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 1.168
2161 EU-NG-3 D1XM1-VOC138-7-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.43284706
2162 EU-NG-3 D1XM1-VOC138-7-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 2.51463529
2163 EU-NG-3 D1XM1-VOC138-7-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 1.8688
2164 EU-NG-3 D1XM1-VOC138-7-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 219.85882353
2165 EU-NG-3 D1XM1-VOC138-7-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.11336471
2166 EU-NG-3 D1XM1-VOC138-7-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00687059
2167 EU-NG-3 D1XM1-VOC138-7-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 68.71275294
2168 EU-NG-3 D1XM1-VOC138-7-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.02061176
2169 EU-NG-3 D1XM1-VOC138-8-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.01374118
2170 EU-NG-3 D1XM1-VOC138-8-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.30230588
2171 EU-NG-3 D1XM1-VOC138-8-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00082447
2172 EU-NG-3 D1XM1-VOC138-8-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.07557647
2173 EU-NG-3 D1XM1-VOC138-8-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00384753
2174 EU-NG-3 D1XM1-VOC138-8-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00577129
2175 EU-NG-3 D1XM1-VOC138-8-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.0584
2176 EU-NG-3 D1XM1-VOC138-8-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.03435294
2177 EU-NG-3 D1XM1-VOC138-8-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.02610824
2178 EU-NG-3 D1XM1-VOC138-8-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.01786353
2179 EU-NG-3 D1XM1-VOC138-8-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.14428235
2180 EU-NG-3 D1XM1-VOC138-8-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00164894
2181 EU-NG-3 D1XM1-VOC138-8-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.15802353
2182 EU-NG-3 D1XM1-VOC138-8-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 1.99247059
2183 EU-NG-3 D1XM1-VOC138-8-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.29543529
2184 EU-NG-3 D1XM1-VOC138-8-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.18550588
2185 EU-NG-3 D1XM1-VOC138-8-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.54964706
2186 EU-NG-3 D1XM1-VOC138-8-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.65270588
2187 EU-NG-3 D1XM1-VOC138-8-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 1.168
2188 EU-NG-3 D1XM1-VOC138-8-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.43284706
2189 EU-NG-3 D1XM1-VOC138-8-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 2.51463529
2190 EU-NG-3 D1XM1-VOC138-8-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 1.8688
2191 EU-NG-3 D1XM1-VOC138-8-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 219.85882353
2192 EU-NG-3 D1XM1-VOC138-8-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.11336471
2193 EU-NG-3 D1XM1-VOC138-8-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00687059
2194 EU-NG-3 D1XM1-VOC138-8-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 68.71275294
2195 EU-NG-3 D1XM1-VOC138-8-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.02061176
2196 EU-NG-3 D1XM2 -VOC138-1-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2197 EU-NG-3 D1XM2 -VOC138-1-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2198 EU-NG-3 D1XM2 -VOC138-1-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2199 EU-NG-3 D1XM2 -VOC138-1-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2200 EU-NG-3 D1XM2 -VOC138-1-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2201 EU-NG-3 D1XM2 -VOC138-1-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2202 EU-NG-3 D1XM2 -VOC138-1-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2203 EU-NG-3 D1XM2 -VOC138-1-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2204 EU-NG-3 D1XM2 -VOC138-1-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2205 EU-NG-3 D1XM2 -VOC138-1-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2206 EU-NG-3 D1XM2 -VOC138-1-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2207 EU-NG-3 D1XM2 -VOC138-1-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2208 EU-NG-3 D1XM2 -VOC138-1-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2209 EU-NG-3 D1XM2 -VOC138-1-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2210 EU-NG-3 D1XM2 -VOC138-1-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2211 EU-NG-3 D1XM2 -VOC138-1-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2212 EU-NG-3 D1XM2 -VOC138-1-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2213 EU-NG-3 D1XM2 -VOC138-1-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2214 EU-NG-3 D1XM2 -VOC138-1-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2215 EU-NG-3 D1XM2 -VOC138-1-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2216 EU-NG-3 D1XM2 -VOC138-1-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2217 EU-NG-3 D1XM2 -VOC138-1-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2218 EU-NG-3 D1XM2 -VOC138-1-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2219 EU-NG-3 D1XM2 -VOC138-1-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2220 EU-NG-3 D1XM2 -VOC138-1-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2221 EU-NG-3 D1XM2 -VOC138-1-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2222 EU-NG-3 D1XM2 -VOC138-1-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2223 EU-NG-3 D1XM2 -VOC138-2-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2224 EU-NG-3 D1XM2 -VOC138-2-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2225 EU-NG-3 D1XM2 -VOC138-2-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2226 EU-NG-3 D1XM2 -VOC138-2-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2227 EU-NG-3 D1XM2 -VOC138-2-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2228 EU-NG-3 D1XM2 -VOC138-2-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2229 EU-NG-3 D1XM2 -VOC138-2-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2230 EU-NG-3 D1XM2 -VOC138-2-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2231 EU-NG-3 D1XM2 -VOC138-2-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2232 EU-NG-3 D1XM2 -VOC138-2-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2233 EU-NG-3 D1XM2 -VOC138-2-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2234 EU-NG-3 D1XM2 -VOC138-2-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2235 EU-NG-3 D1XM2 -VOC138-2-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2236 EU-NG-3 D1XM2 -VOC138-2-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2237 EU-NG-3 D1XM2 -VOC138-2-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2238 EU-NG-3 D1XM2 -VOC138-2-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2239 EU-NG-3 D1XM2 -VOC138-2-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2240 EU-NG-3 D1XM2 -VOC138-2-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2241 EU-NG-3 D1XM2 -VOC138-2-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2242 EU-NG-3 D1XM2 -VOC138-2-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2243 EU-NG-3 D1XM2 -VOC138-2-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2244 EU-NG-3 D1XM2 -VOC138-2-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2245 EU-NG-3 D1XM2 -VOC138-2-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2246 EU-NG-3 D1XM2 -VOC138-2-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2247 EU-NG-3 D1XM2 -VOC138-2-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2248 EU-NG-3 D1XM2 -VOC138-2-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2249 EU-NG-3 D1XM2 -VOC138-2-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2250 EU-NG-3 D1XM2 -VOC138-3-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2251 EU-NG-3 D1XM2 -VOC138-3-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2252 EU-NG-3 D1XM2 -VOC138-3-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2253 EU-NG-3 D1XM2 -VOC138-3-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2254 EU-NG-3 D1XM2 -VOC138-3-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2255 EU-NG-3 D1XM2 -VOC138-3-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2256 EU-NG-3 D1XM2 -VOC138-3-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2257 EU-NG-3 D1XM2 -VOC138-3-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2258 EU-NG-3 D1XM2 -VOC138-3-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2259 EU-NG-3 D1XM2 -VOC138-3-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2260 EU-NG-3 D1XM2 -VOC138-3-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2261 EU-NG-3 D1XM2 -VOC138-3-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2262 EU-NG-3 D1XM2 -VOC138-3-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2263 EU-NG-3 D1XM2 -VOC138-3-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2264 EU-NG-3 D1XM2 -VOC138-3-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2265 EU-NG-3 D1XM2 -VOC138-3-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2266 EU-NG-3 D1XM2 -VOC138-3-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2267 EU-NG-3 D1XM2 -VOC138-3-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2268 EU-NG-3 D1XM2 -VOC138-3-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2269 EU-NG-3 D1XM2 -VOC138-3-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2270 EU-NG-3 D1XM2 -VOC138-3-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2271 EU-NG-3 D1XM2 -VOC138-3-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2272 EU-NG-3 D1XM2 -VOC138-3-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2273 EU-NG-3 D1XM2 -VOC138-3-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2274 EU-NG-3 D1XM2 -VOC138-3-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2275 EU-NG-3 D1XM2 -VOC138-3-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2276 EU-NG-3 D1XM2 -VOC138-3-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2277 EU-NG-3 D1XM2 -VOC138-4-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2278 EU-NG-3 D1XM2 -VOC138-4-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2279 EU-NG-3 D1XM2 -VOC138-4-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2280 EU-NG-3 D1XM2 -VOC138-4-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2281 EU-NG-3 D1XM2 -VOC138-4-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2282 EU-NG-3 D1XM2 -VOC138-4-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2283 EU-NG-3 D1XM2 -VOC138-4-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2284 EU-NG-3 D1XM2 -VOC138-4-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2285 EU-NG-3 D1XM2 -VOC138-4-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2286 EU-NG-3 D1XM2 -VOC138-4-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2287 EU-NG-3 D1XM2 -VOC138-4-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2288 EU-NG-3 D1XM2 -VOC138-4-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2289 EU-NG-3 D1XM2 -VOC138-4-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2290 EU-NG-3 D1XM2 -VOC138-4-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2291 EU-NG-3 D1XM2 -VOC138-4-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2292 EU-NG-3 D1XM2 -VOC138-4-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2293 EU-NG-3 D1XM2 -VOC138-4-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2294 EU-NG-3 D1XM2 -VOC138-4-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2295 EU-NG-3 D1XM2 -VOC138-4-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2296 EU-NG-3 D1XM2 -VOC138-4-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2297 EU-NG-3 D1XM2 -VOC138-4-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2298 EU-NG-3 D1XM2 -VOC138-4-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2299 EU-NG-3 D1XM2 -VOC138-4-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2300 EU-NG-3 D1XM2 -VOC138-4-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2301 EU-NG-3 D1XM2 -VOC138-4-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2302 EU-NG-3 D1XM2 -VOC138-4-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2303 EU-NG-3 D1XM2 -VOC138-4-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2304 EU-NG-3 D1XM2 -VOC138-5-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2305 EU-NG-3 D1XM2 -VOC138-5-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2306 EU-NG-3 D1XM2 -VOC138-5-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2307 EU-NG-3 D1XM2 -VOC138-5-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2308 EU-NG-3 D1XM2 -VOC138-5-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2309 EU-NG-3 D1XM2 -VOC138-5-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2310 EU-NG-3 D1XM2 -VOC138-5-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2311 EU-NG-3 D1XM2 -VOC138-5-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2312 EU-NG-3 D1XM2 -VOC138-5-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2313 EU-NG-3 D1XM2 -VOC138-5-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2314 EU-NG-3 D1XM2 -VOC138-5-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2315 EU-NG-3 D1XM2 -VOC138-5-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2316 EU-NG-3 D1XM2 -VOC138-5-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2317 EU-NG-3 D1XM2 -VOC138-5-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2318 EU-NG-3 D1XM2 -VOC138-5-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2319 EU-NG-3 D1XM2 -VOC138-5-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2320 EU-NG-3 D1XM2 -VOC138-5-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2321 EU-NG-3 D1XM2 -VOC138-5-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2322 EU-NG-3 D1XM2 -VOC138-5-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2323 EU-NG-3 D1XM2 -VOC138-5-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2324 EU-NG-3 D1XM2 -VOC138-5-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2325 EU-NG-3 D1XM2 -VOC138-5-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2326 EU-NG-3 D1XM2 -VOC138-5-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2327 EU-NG-3 D1XM2 -VOC138-5-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2328 EU-NG-3 D1XM2 -VOC138-5-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2329 EU-NG-3 D1XM2 -VOC138-5-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2330 EU-NG-3 D1XM2 -VOC138-5-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2331 EU-NG-3 D1XM3-VOC138-1-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2332 EU-NG-3 D1XM3-VOC138-1-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2333 EU-NG-3 D1XM3-VOC138-1-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2334 EU-NG-3 D1XM3-VOC138-1-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2335 EU-NG-3 D1XM3-VOC138-1-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2336 EU-NG-3 D1XM3-VOC138-1-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2337 EU-NG-3 D1XM3-VOC138-1-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2338 EU-NG-3 D1XM3-VOC138-1-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2339 EU-NG-3 D1XM3-VOC138-1-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2340 EU-NG-3 D1XM3-VOC138-1-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2341 EU-NG-3 D1XM3-VOC138-1-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2342 EU-NG-3 D1XM3-VOC138-1-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2343 EU-NG-3 D1XM3-VOC138-1-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2344 EU-NG-3 D1XM3-VOC138-1-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2345 EU-NG-3 D1XM3-VOC138-1-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2346 EU-NG-3 D1XM3-VOC138-1-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2347 EU-NG-3 D1XM3-VOC138-1-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2348 EU-NG-3 D1XM3-VOC138-1-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2349 EU-NG-3 D1XM3-VOC138-1-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2350 EU-NG-3 D1XM3-VOC138-1-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2351 EU-NG-3 D1XM3-VOC138-1-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2352 EU-NG-3 D1XM3-VOC138-1-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2353 EU-NG-3 D1XM3-VOC138-1-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2354 EU-NG-3 D1XM3-VOC138-1-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2355 EU-NG-3 D1XM3-VOC138-1-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2356 EU-NG-3 D1XM3-VOC138-1-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2357 EU-NG-3 D1XM3-VOC138-1-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2358 EU-NG-3 D1XM3-VOC138-2-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2359 EU-NG-3 D1XM3-VOC138-2-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2360 EU-NG-3 D1XM3-VOC138-2-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2361 EU-NG-3 D1XM3-VOC138-2-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2362 EU-NG-3 D1XM3-VOC138-2-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2363 EU-NG-3 D1XM3-VOC138-2-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2364 EU-NG-3 D1XM3-VOC138-2-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2365 EU-NG-3 D1XM3-VOC138-2-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2366 EU-NG-3 D1XM3-VOC138-2-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2367 EU-NG-3 D1XM3-VOC138-2-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2368 EU-NG-3 D1XM3-VOC138-2-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2369 EU-NG-3 D1XM3-VOC138-2-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2370 EU-NG-3 D1XM3-VOC138-2-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2371 EU-NG-3 D1XM3-VOC138-2-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2372 EU-NG-3 D1XM3-VOC138-2-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2373 EU-NG-3 D1XM3-VOC138-2-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2374 EU-NG-3 D1XM3-VOC138-2-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2375 EU-NG-3 D1XM3-VOC138-2-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2376 EU-NG-3 D1XM3-VOC138-2-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2377 EU-NG-3 D1XM3-VOC138-2-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2378 EU-NG-3 D1XM3-VOC138-2-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2379 EU-NG-3 D1XM3-VOC138-2-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2380 EU-NG-3 D1XM3-VOC138-2-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2381 EU-NG-3 D1XM3-VOC138-2-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2382 EU-NG-3 D1XM3-VOC138-2-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2383 EU-NG-3 D1XM3-VOC138-2-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2384 EU-NG-3 D1XM3-VOC138-2-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2385 EU-NG-3 D1XM3-VOC138-3-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2386 EU-NG-3 D1XM3-VOC138-3-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2387 EU-NG-3 D1XM3-VOC138-3-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2388 EU-NG-3 D1XM3-VOC138-3-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2389 EU-NG-3 D1XM3-VOC138-3-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2390 EU-NG-3 D1XM3-VOC138-3-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2391 EU-NG-3 D1XM3-VOC138-3-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2392 EU-NG-3 D1XM3-VOC138-3-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2393 EU-NG-3 D1XM3-VOC138-3-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2394 EU-NG-3 D1XM3-VOC138-3-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2395 EU-NG-3 D1XM3-VOC138-3-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2396 EU-NG-3 D1XM3-VOC138-3-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2397 EU-NG-3 D1XM3-VOC138-3-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2398 EU-NG-3 D1XM3-VOC138-3-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2399 EU-NG-3 D1XM3-VOC138-3-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2400 EU-NG-3 D1XM3-VOC138-3-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2401 EU-NG-3 D1XM3-VOC138-3-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2402 EU-NG-3 D1XM3-VOC138-3-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2403 EU-NG-3 D1XM3-VOC138-3-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2404 EU-NG-3 D1XM3-VOC138-3-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2405 EU-NG-3 D1XM3-VOC138-3-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2406 EU-NG-3 D1XM3-VOC138-3-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2407 EU-NG-3 D1XM3-VOC138-3-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2408 EU-NG-3 D1XM3-VOC138-3-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2409 EU-NG-3 D1XM3-VOC138-3-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2410 EU-NG-3 D1XM3-VOC138-3-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2411 EU-NG-3 D1XM3-VOC138-3-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2412 EU-NG-3 D1XM3-VOC138-4-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2413 EU-NG-3 D1XM3-VOC138-4-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2414 EU-NG-3 D1XM3-VOC138-4-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2415 EU-NG-3 D1XM3-VOC138-4-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2416 EU-NG-3 D1XM3-VOC138-4-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2417 EU-NG-3 D1XM3-VOC138-4-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2418 EU-NG-3 D1XM3-VOC138-4-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2419 EU-NG-3 D1XM3-VOC138-4-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2420 EU-NG-3 D1XM3-VOC138-4-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2421 EU-NG-3 D1XM3-VOC138-4-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2422 EU-NG-3 D1XM3-VOC138-4-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2423 EU-NG-3 D1XM3-VOC138-4-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2424 EU-NG-3 D1XM3-VOC138-4-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2425 EU-NG-3 D1XM3-VOC138-4-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2426 EU-NG-3 D1XM3-VOC138-4-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2427 EU-NG-3 D1XM3-VOC138-4-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2428 EU-NG-3 D1XM3-VOC138-4-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2429 EU-NG-3 D1XM3-VOC138-4-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2430 EU-NG-3 D1XM3-VOC138-4-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2431 EU-NG-3 D1XM3-VOC138-4-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2432 EU-NG-3 D1XM3-VOC138-4-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2433 EU-NG-3 D1XM3-VOC138-4-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2434 EU-NG-3 D1XM3-VOC138-4-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2435 EU-NG-3 D1XM3-VOC138-4-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2436 EU-NG-3 D1XM3-VOC138-4-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2437 EU-NG-3 D1XM3-VOC138-4-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2438 EU-NG-3 D1XM3-VOC138-4-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2439 EU-NG-3 D1XM3-VOC138-5-20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00003765
2440 EU-NG-3 D1XM3-VOC138-5-20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.30230588 0.00082824
2441 EU-NG-3 D1XM3-VOC138-5-20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00082447 0.00000226
2442 EU-NG-3 D1XM3-VOC138-5-20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2443 EU-NG-3 D1XM3-VOC138-5-20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00384753 0.00001054
2444 EU-NG-3 D1XM3-VOC138-5-20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00577129 0.00001581
2445 EU-NG-3 D1XM3-VOC138-5-20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00016
2446 EU-NG-3 D1XM3-VOC138-5-20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00009412
2447 EU-NG-3 D1XM3-VOC138-5-20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02610824 0.00007153
2448 EU-NG-3 D1XM3-VOC138-5-20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01786353 0.00004894
2449 EU-NG-3 D1XM3-VOC138-5-20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14428235 0.00039529
2450 EU-NG-3 D1XM3-VOC138-5-20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00164894 0.00000452
2451 EU-NG-3 D1XM3-VOC138-5-20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15802353 0.00043294
2452 EU-NG-3 D1XM3-VOC138-5-20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.99247059 0.00545882
2453 EU-NG-3 D1XM3-VOC138-5-20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.29543529 0.00080941
2454 EU-NG-3 D1XM3-VOC138-5-20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18550588 0.00050824
2455 EU-NG-3 D1XM3-VOC138-5-20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.54964706 0.00150588
2456 EU-NG-3 D1XM3-VOC138-5-20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.65270588 0.00178824
2457 EU-NG-3 D1XM3-VOC138-5-20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.168 0.0032
2458 EU-NG-3 D1XM3-VOC138-5-20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.43284706 0.00118588
2459 EU-NG-3 D1XM3-VOC138-5-20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.51463529 0.00688941
2460 EU-NG-3 D1XM3-VOC138-5-20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.8688 0.00512
2461 EU-NG-3 D1XM3-VOC138-5-20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 219.85882353 0.60235294
2462 EU-NG-3 D1XM3-VOC138-5-20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11336471 0.00031059
2463 EU-NG-3 D1XM3-VOC138-5-20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00001882
2464 EU-NG-3 D1XM3-VOC138-5-20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 68.71275294 0.18825412
2465 EU-NG-3 D1XM3-VOC138-5-20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02061176 0.00005647
2466 EU-NG-3 F15-VOC-138-2-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
2467 EU-NG-3 F15-VOC-138-2-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2468 EU-NG-3 F15-VOC-138-2-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
2469 EU-NG-3 F15-VOC-138-2-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
2470 EU-NG-3 F15-VOC-138-2-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
2471 EU-NG-3 F15-VOC-138-2-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
2472 EU-NG-3 F15-VOC-138-2-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
2473 EU-NG-3 F15-VOC-138-2-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
2474 EU-NG-3 F15-VOC-138-2-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
2475 EU-NG-3 F15-VOC-138-2-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
2476 EU-NG-3 F15-VOC-138-2-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
2477 EU-NG-3 F15-VOC-138-2-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
2478 EU-NG-3 F15-VOC-138-2-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
2479 EU-NG-3 F15-VOC-138-2-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
2480 EU-NG-3 F15-VOC-138-2-10 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
2481 EU-NG-3 F15-VOC-138-2-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
2482 EU-NG-3 F15-VOC-138-2-10 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
2483 EU-NG-3 F15-VOC-138-2-10 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
2484 EU-NG-3 F15-VOC-138-2-10 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
2485 EU-NG-3 F15-VOC-138-2-10 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
2486 EU-NG-3 F15-VOC-138-2-10 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
2487 EU-NG-3 F15-VOC-138-2-10 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
2488 EU-NG-3 F15-VOC-138-2-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
2489 EU-NG-3 F15-VOC-138-2-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
2490 EU-NG-3 F15-VOC-138-2-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
2491 EU-NG-3 F15-VOC-138-2-10 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
2492 EU-NG-3 F15-VOC-138-2-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
2493 EU-NG-3 F15-VOC-138-3-10
 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
2494 EU-NG-3 F15-VOC-138-3-10
 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2495 EU-NG-3 F15-VOC-138-3-10
 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
2496 EU-NG-3 F15-VOC-138-3-10
 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
2497 EU-NG-3 F15-VOC-138-3-10
 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
2498 EU-NG-3 F15-VOC-138-3-10
 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
2499 EU-NG-3 F15-VOC-138-3-10
 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
2500 EU-NG-3 F15-VOC-138-3-10
 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
2501 EU-NG-3 F15-VOC-138-3-10
 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
2502 EU-NG-3 F15-VOC-138-3-10
 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
2503 EU-NG-3 F15-VOC-138-3-10
 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
2504 EU-NG-3 F15-VOC-138-3-10
 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
2505 EU-NG-3 F15-VOC-138-3-10
 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
2506 EU-NG-3 F15-VOC-138-3-10
 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
2507 EU-NG-3 F15-VOC-138-3-10
 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
2508 EU-NG-3 F15-VOC-138-3-10
 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
2509 EU-NG-3 F15-VOC-138-3-10
 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
2510 EU-NG-3 F15-VOC-138-3-10
 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
2511 EU-NG-3 F15-VOC-138-3-10
 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
2512 EU-NG-3 F15-VOC-138-3-10
 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
2513 EU-NG-3 F15-VOC-138-3-10
 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
2514 EU-NG-3 F15-VOC-138-3-10
 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
2515 EU-NG-3 F15-VOC-138-3-10
 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
2516 EU-NG-3 F15-VOC-138-3-10
 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
2517 EU-NG-3 F15-VOC-138-3-10
 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
2518 EU-NG-3 F15-VOC-138-3-10
 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
2519 EU-NG-3 F15-VOC-138-3-10
 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
2520 EU-NG-3 F15-VOC-138-4-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
2521 EU-NG-3 F15-VOC-138-4-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2522 EU-NG-3 F15-VOC-138-4-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
2523 EU-NG-3 F15-VOC-138-4-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
2524 EU-NG-3 F15-VOC-138-4-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
2525 EU-NG-3 F15-VOC-138-4-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
2526 EU-NG-3 F15-VOC-138-4-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
2527 EU-NG-3 F15-VOC-138-4-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
2528 EU-NG-3 F15-VOC-138-4-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
2529 EU-NG-3 F15-VOC-138-4-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
2530 EU-NG-3 F15-VOC-138-4-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
2531 EU-NG-3 F15-VOC-138-4-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
2532 EU-NG-3 F15-VOC-138-4-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
2533 EU-NG-3 F15-VOC-138-4-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
2534 EU-NG-3 F15-VOC-138-4-10 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
2535 EU-NG-3 F15-VOC-138-4-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
2536 EU-NG-3 F15-VOC-138-4-10 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
2537 EU-NG-3 F15-VOC-138-4-10 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
2538 EU-NG-3 F15-VOC-138-4-10 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
2539 EU-NG-3 F15-VOC-138-4-10 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
2540 EU-NG-3 F15-VOC-138-4-10 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
2541 EU-NG-3 F15-VOC-138-4-10 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
2542 EU-NG-3 F15-VOC-138-4-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
2543 EU-NG-3 F15-VOC-138-4-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
2544 EU-NG-3 F15-VOC-138-4-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
2545 EU-NG-3 F15-VOC-138-4-10 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
2546 EU-NG-3 F15-VOC-138-4-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
2547 EU-NG-3 F15-VOC-138-1-10
 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
2548 EU-NG-3 F15-VOC-138-1-10
 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2549 EU-NG-3 F15-VOC-138-1-10
 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
2550 EU-NG-3 F15-VOC-138-1-10
 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
2551 EU-NG-3 F15-VOC-138-1-10
 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
2552 EU-NG-3 F15-VOC-138-1-10
 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
2553 EU-NG-3 F15-VOC-138-1-10
 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
2554 EU-NG-3 F15-VOC-138-1-10
 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
2555 EU-NG-3 F15-VOC-138-1-10
 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
2556 EU-NG-3 F15-VOC-138-1-10
 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
2557 EU-NG-3 F15-VOC-138-1-10
 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
2558 EU-NG-3 F15-VOC-138-1-10
 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
2559 EU-NG-3 F15-VOC-138-1-10
 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
2560 EU-NG-3 F15-VOC-138-1-10
 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
2561 EU-NG-3 F15-VOC-138-1-10
 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
2562 EU-NG-3 F15-VOC-138-1-10
 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
2563 EU-NG-3 F15-VOC-138-1-10
 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
2564 EU-NG-3 F15-VOC-138-1-10
 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
2565 EU-NG-3 F15-VOC-138-1-10
 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
2566 EU-NG-3 F15-VOC-138-1-10
 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
2567 EU-NG-3 F15-VOC-138-1-10
 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
2568 EU-NG-3 F15-VOC-138-1-10
 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
2569 EU-NG-3 F15-VOC-138-1-10
 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
2570 EU-NG-3 F15-VOC-138-1-10
 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
2571 EU-NG-3 F15-VOC-138-1-10
 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
2572 EU-NG-3 F15-VOC-138-1-10
 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
2573 EU-NG-3 F15-VOC-138-1-10
 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
2574 EU-NG-3 F15-VOC-138-5-10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00343529 0.00000941
2575 EU-NG-3 F15-VOC-138-5-10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07557647 0.00020706
2576 EU-NG-3 F15-VOC-138-5-10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000056
2577 EU-NG-3 F15-VOC-138-5-10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00005176
2578 EU-NG-3 F15-VOC-138-5-10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00096188 0.00000264
2579 EU-NG-3 F15-VOC-138-5-10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144282 0.00000395
2580 EU-NG-3 F15-VOC-138-5-10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00004
2581 EU-NG-3 F15-VOC-138-5-10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00858824 0.00002353
2582 EU-NG-3 F15-VOC-138-5-10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00652706 0.00001788
2583 EU-NG-3 F15-VOC-138-5-10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00446588 0.00001224
2584 EU-NG-3 F15-VOC-138-5-10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03607059 0.00009882
2585 EU-NG-3 F15-VOC-138-5-10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000113
2586 EU-NG-3 F15-VOC-138-5-10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03950588 0.00010824
2587 EU-NG-3 F15-VOC-138-5-10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.49811765 0.00136471
2588 EU-NG-3 F15-VOC-138-5-10 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07385882 0.00020235
2589 EU-NG-3 F15-VOC-138-5-10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04637647 0.00012706
2590 EU-NG-3 F15-VOC-138-5-10 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13741176 0.00037647
2591 EU-NG-3 F15-VOC-138-5-10 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.16317647 0.00044706
2592 EU-NG-3 F15-VOC-138-5-10 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.292 0.0008
2593 EU-NG-3 F15-VOC-138-5-10 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10821176 0.00029647
2594 EU-NG-3 F15-VOC-138-5-10 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.62865882 0.00172235
2595 EU-NG-3 F15-VOC-138-5-10 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.4672 0.00128
2596 EU-NG-3 F15-VOC-138-5-10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 54.96470588 0.15058824
2597 EU-NG-3 F15-VOC-138-5-10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02834118 0.00007765
2598 EU-NG-3 F15-VOC-138-5-10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171765 0.00000471
2599 EU-NG-3 F15-VOC-138-5-10 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 17.17818824 0.04706353
2600 EU-NG-3 F15-VOC-138-5-10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00001412
2601 EU-NG-4 HER3_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170906 0.00000936
2602 EU-NG-4 HER3_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03759929 0.00020602
2603 EU-NG-4 HER3_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010254 0.00000056
2604 EU-NG-4 HER3_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00939982 0.00005151
2605 EU-NG-4 HER3_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00047854 0.00000262
2606 EU-NG-4 HER3_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0007178 0.00000393
2607 EU-NG-4 HER3_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0072635 0.0000398
2608 EU-NG-4 HER3_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00427265 0.00002341
2609 EU-NG-4 HER3_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324721 0.00001779
2610 EU-NG-4 HER3_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00222178 0.00001217
2611 EU-NG-4 HER3_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01794512 0.00009833
2612 EU-NG-4 HER3_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020509 0.00000112
2613 EU-NG-4 HER3_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01965418 0.00010769
2614 EU-NG-4 HER3_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24781353 0.00135788
2615 EU-NG-4 HER3_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03674476 0.00020134
2616 EU-NG-4 HER3_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02307229 0.00012642
2617 EU-NG-4 HER3_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06836235 0.00037459
2618 EU-NG-4 HER3_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08118029 0.00044482
2619 EU-NG-4 HER3_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14527 0.000796
2620 EU-NG-4 HER3_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05383535 0.00029499
2621 EU-NG-4 HER3_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31275776 0.00171374
2622 EU-NG-4 HER3_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.232432 0.0012736
2623 EU-NG-4 HER3_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 27.34494118 0.14983529
2624 EU-NG-4 HER3_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01409974 0.00007726
2625 EU-NG-4 HER3_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085453 0.00000468
2626 EU-NG-4 HER3_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.54614865 0.04682821
2627 EU-NG-4 HER3_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00256359 0.00001405
2628 EU-NG-4 HER3_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170906 0.00000936
2629 EU-NG-4 HER3_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03759929 0.00020602
2630 EU-NG-4 HER3_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010254 0.00000056
2631 EU-NG-4 HER3_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00939982 0.00005151
2632 EU-NG-4 HER3_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00047854 0.00000262
2633 EU-NG-4 HER3_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0007178 0.00000393
2634 EU-NG-4 HER3_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0072635 0.0000398
2635 EU-NG-4 HER3_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00427265 0.00002341
2636 EU-NG-4 HER3_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324721 0.00001779
2637 EU-NG-4 HER3_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00222178 0.00001217
2638 EU-NG-4 HER3_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01794512 0.00009833
2639 EU-NG-4 HER3_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020509 0.00000112
2640 EU-NG-4 HER3_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01965418 0.00010769
2641 EU-NG-4 HER3_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24781353 0.00135788
2642 EU-NG-4 HER3_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03674476 0.00020134
2643 EU-NG-4 HER3_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02307229 0.00012642
2644 EU-NG-4 HER3_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06836235 0.00037459
2645 EU-NG-4 HER3_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08118029 0.00044482
2646 EU-NG-4 HER3_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14527 0.000796
2647 EU-NG-4 HER3_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05383535 0.00029499
2648 EU-NG-4 HER3_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31275776 0.00171374
2649 EU-NG-4 HER3_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.232432 0.0012736
2650 EU-NG-4 HER3_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 27.34494118 0.14983529
2651 EU-NG-4 HER3_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01409974 0.00007726
2652 EU-NG-4 HER3_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085453 0.00000468
2653 EU-NG-4 HER3_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.54614865 0.04682821
2654 EU-NG-4 HER3_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00256359 0.00001405
2655 EU-NG-4 HER3_03 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170906 0.00000936
2656 EU-NG-4 HER3_03 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03759929 0.00020602
2657 EU-NG-4 HER3_03 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010254 0.00000056
2658 EU-NG-4 HER3_03 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00939982 0.00005151
2659 EU-NG-4 HER3_03 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00047854 0.00000262
2660 EU-NG-4 HER3_03 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0007178 0.00000393
2661 EU-NG-4 HER3_03 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0072635 0.0000398
2662 EU-NG-4 HER3_03 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00427265 0.00002341
2663 EU-NG-4 HER3_03 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324721 0.00001779
2664 EU-NG-4 HER3_03 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00222178 0.00001217
2665 EU-NG-4 HER3_03 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01794512 0.00009833
2666 EU-NG-4 HER3_03 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020509 0.00000112
2667 EU-NG-4 HER3_03 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01965418 0.00010769
2668 EU-NG-4 HER3_03 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24781353 0.00135788
2669 EU-NG-4 HER3_03 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03674476 0.00020134
2670 EU-NG-4 HER3_03 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02307229 0.00012642
2671 EU-NG-4 HER3_03 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06836235 0.00037459
2672 EU-NG-4 HER3_03 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08118029 0.00044482
2673 EU-NG-4 HER3_03 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14527 0.000796
2674 EU-NG-4 HER3_03 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05383535 0.00029499
2675 EU-NG-4 HER3_03 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31275776 0.00171374
2676 EU-NG-4 HER3_03 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.232432 0.0012736
2677 EU-NG-4 HER3_03 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 27.34494118 0.14983529
2678 EU-NG-4 HER3_03 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01409974 0.00007726
2679 EU-NG-4 HER3_03 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085453 0.00000468
2680 EU-NG-4 HER3_03 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.54614865 0.04682821
2681 EU-NG-4 HER3_03 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00256359 0.00001405
2682 EU-NG-4 HER3_04 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170906 0.00000936
2683 EU-NG-4 HER3_04 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03759929 0.00020602
2684 EU-NG-4 HER3_04 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010254 0.00000056
2685 EU-NG-4 HER3_04 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00939982 0.00005151
2686 EU-NG-4 HER3_04 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00047854 0.00000262
2687 EU-NG-4 HER3_04 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0007178 0.00000393
2688 EU-NG-4 HER3_04 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0072635 0.0000398
2689 EU-NG-4 HER3_04 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00427265 0.00002341
2690 EU-NG-4 HER3_04 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324721 0.00001779
2691 EU-NG-4 HER3_04 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00222178 0.00001217
2692 EU-NG-4 HER3_04 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01794512 0.00009833
2693 EU-NG-4 HER3_04 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020509 0.00000112
2694 EU-NG-4 HER3_04 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01965418 0.00010769
2695 EU-NG-4 HER3_04 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24781353 0.00135788
2696 EU-NG-4 HER3_04 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03674476 0.00020134
2697 EU-NG-4 HER3_04 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02307229 0.00012642
2698 EU-NG-4 HER3_04 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06836235 0.00037459
2699 EU-NG-4 HER3_04 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08118029 0.00044482
2700 EU-NG-4 HER3_04 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14527 0.000796
2701 EU-NG-4 HER3_04 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05383535 0.00029499
2702 EU-NG-4 HER3_04 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31275776 0.00171374
2703 EU-NG-4 HER3_04 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.232432 0.0012736
2704 EU-NG-4 HER3_04 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 27.34494118 0.14983529
2705 EU-NG-4 HER3_04 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01409974 0.00007726
2706 EU-NG-4 HER3_04 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085453 0.00000468
2707 EU-NG-4 HER3_04 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.54614865 0.04682821
2708 EU-NG-4 HER3_04 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00256359 0.00001405
2709 EU-NG-4 HER3_05 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170906 0.00000936
2710 EU-NG-4 HER3_05 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03759929 0.00020602
2711 EU-NG-4 HER3_05 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010254 0.00000056
2712 EU-NG-4 HER3_05 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00939982 0.00005151
2713 EU-NG-4 HER3_05 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00047854 0.00000262
2714 EU-NG-4 HER3_05 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0007178 0.00000393
2715 EU-NG-4 HER3_05 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0072635 0.0000398
2716 EU-NG-4 HER3_05 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00427265 0.00002341
2717 EU-NG-4 HER3_05 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324721 0.00001779
2718 EU-NG-4 HER3_05 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00222178 0.00001217
2719 EU-NG-4 HER3_05 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01794512 0.00009833
2720 EU-NG-4 HER3_05 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020509 0.00000112
2721 EU-NG-4 HER3_05 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01965418 0.00010769
2722 EU-NG-4 HER3_05 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24781353 0.00135788
2723 EU-NG-4 HER3_05 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03674476 0.00020134
2724 EU-NG-4 HER3_05 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02307229 0.00012642
2725 EU-NG-4 HER3_05 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06836235 0.00037459
2726 EU-NG-4 HER3_05 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08118029 0.00044482
2727 EU-NG-4 HER3_05 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14527 0.000796
2728 EU-NG-4 HER3_05 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05383535 0.00029499
2729 EU-NG-4 HER3_05 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31275776 0.00171374
2730 EU-NG-4 HER3_05 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.232432 0.0012736
2731 EU-NG-4 HER3_05 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 27.34494118 0.14983529
2732 EU-NG-4 HER3_05 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01409974 0.00007726
2733 EU-NG-4 HER3_05 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085453 0.00000468
2734 EU-NG-4 HER3_05 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.54614865 0.04682821
2735 EU-NG-4 HER3_05 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00256359 0.00001405
2736 EU-NG-4 HER3_06 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170906 0.00000936
2737 EU-NG-4 HER3_06 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03759929 0.00020602
2738 EU-NG-4 HER3_06 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010254 0.00000056
2739 EU-NG-4 HER3_06 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00939982 0.00005151
2740 EU-NG-4 HER3_06 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00047854 0.00000262
2741 EU-NG-4 HER3_06 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0007178 0.00000393
2742 EU-NG-4 HER3_06 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0072635 0.0000398
2743 EU-NG-4 HER3_06 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00427265 0.00002341
2744 EU-NG-4 HER3_06 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324721 0.00001779
2745 EU-NG-4 HER3_06 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00222178 0.00001217
2746 EU-NG-4 HER3_06 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01794512 0.00009833
2747 EU-NG-4 HER3_06 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020509 0.00000112
2748 EU-NG-4 HER3_06 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01965418 0.00010769
2749 EU-NG-4 HER3_06 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24781353 0.00135788
2750 EU-NG-4 HER3_06 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03674476 0.00020134
2751 EU-NG-4 HER3_06 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02307229 0.00012642
2752 EU-NG-4 HER3_06 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06836235 0.00037459
2753 EU-NG-4 HER3_06 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08118029 0.00044482
2754 EU-NG-4 HER3_06 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14527 0.000796
2755 EU-NG-4 HER3_06 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05383535 0.00029499
2756 EU-NG-4 HER3_06 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31275776 0.00171374
2757 EU-NG-4 HER3_06 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.232432 0.0012736
2758 EU-NG-4 HER3_06 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 27.34494118 0.14983529
2759 EU-NG-4 HER3_06 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01409974 0.00007726
2760 EU-NG-4 HER3_06 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085453 0.00000468
2761 EU-NG-4 HER3_06 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.54614865 0.04682821
2762 EU-NG-4 HER3_06 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00256359 0.00001405
2763 EU-NG-4 HER3_07 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170906 0.00000936
2764 EU-NG-4 HER3_07 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03759929 0.00020602
2765 EU-NG-4 HER3_07 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010254 0.00000056
2766 EU-NG-4 HER3_07 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00939982 0.00005151
2767 EU-NG-4 HER3_07 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00047854 0.00000262
2768 EU-NG-4 HER3_07 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0007178 0.00000393
2769 EU-NG-4 HER3_07 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0072635 0.0000398
2770 EU-NG-4 HER3_07 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00427265 0.00002341
2771 EU-NG-4 HER3_07 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324721 0.00001779
2772 EU-NG-4 HER3_07 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00222178 0.00001217
2773 EU-NG-4 HER3_07 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01794512 0.00009833
2774 EU-NG-4 HER3_07 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020509 0.00000112
2775 EU-NG-4 HER3_07 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01965418 0.00010769
2776 EU-NG-4 HER3_07 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24781353 0.00135788
2777 EU-NG-4 HER3_07 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03674476 0.00020134
2778 EU-NG-4 HER3_07 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02307229 0.00012642
2779 EU-NG-4 HER3_07 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06836235 0.00037459
2780 EU-NG-4 HER3_07 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08118029 0.00044482
2781 EU-NG-4 HER3_07 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14527 0.000796
2782 EU-NG-4 HER3_07 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05383535 0.00029499
2783 EU-NG-4 HER3_07 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31275776 0.00171374
2784 EU-NG-4 HER3_07 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.232432 0.0012736
2785 EU-NG-4 HER3_07 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 27.34494118 0.14983529
2786 EU-NG-4 HER3_07 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01409974 0.00007726
2787 EU-NG-4 HER3_07 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085453 0.00000468
2788 EU-NG-4 HER3_07 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.54614865 0.04682821
2789 EU-NG-4 HER3_07 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00256359 0.00001405
2790 EU-NG-4 HER3_08 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00170906 0.00000936
2791 EU-NG-4 HER3_08 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03759929 0.00020602
2792 EU-NG-4 HER3_08 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010254 0.00000056
2793 EU-NG-4 HER3_08 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00939982 0.00005151
2794 EU-NG-4 HER3_08 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00047854 0.00000262
2795 EU-NG-4 HER3_08 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0007178 0.00000393
2796 EU-NG-4 HER3_08 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0072635 0.0000398
2797 EU-NG-4 HER3_08 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00427265 0.00002341
2798 EU-NG-4 HER3_08 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324721 0.00001779
2799 EU-NG-4 HER3_08 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00222178 0.00001217
2800 EU-NG-4 HER3_08 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01794512 0.00009833
2801 EU-NG-4 HER3_08 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020509 0.00000112
2802 EU-NG-4 HER3_08 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01965418 0.00010769
2803 EU-NG-4 HER3_08 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24781353 0.00135788
2804 EU-NG-4 HER3_08 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03674476 0.00020134
2805 EU-NG-4 HER3_08 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02307229 0.00012642
2806 EU-NG-4 HER3_08 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06836235 0.00037459
2807 EU-NG-4 HER3_08 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08118029 0.00044482
2808 EU-NG-4 HER3_08 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14527 0.000796
2809 EU-NG-4 HER3_08 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05383535 0.00029499
2810 EU-NG-4 HER3_08 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31275776 0.00171374
2811 EU-NG-4 HER3_08 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.232432 0.0012736
2812 EU-NG-4 HER3_08 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 27.34494118 0.14983529
2813 EU-NG-4 HER3_08 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01409974 0.00007726
2814 EU-NG-4 HER3_08 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085453 0.00000468
2815 EU-NG-4 HER3_08 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.54614865 0.04682821
2816 EU-NG-4 HER3_08 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00256359 0.00001405
2817 EU-NG-4 HERS4_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
2818 EU-NG-4 HERS4_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01606 0.000088
2819 EU-NG-4 HERS4_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000438 0.00000024
2820 EU-NG-4 HERS4_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.004015 0.000022
2821 EU-NG-4 HERS4_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0002044 0.00000112
2822 EU-NG-4 HERS4_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0003066 0.00000168
2823 EU-NG-4 HERS4_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0031025 0.000017
2824 EU-NG-4 HERS4_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
2825 EU-NG-4 HERS4_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001387 0.0000076
2826 EU-NG-4 HERS4_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000949 0.0000052
2827 EU-NG-4 HERS4_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000042
2828 EU-NG-4 HERS4_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000876 0.00000048
2829 EU-NG-4 HERS4_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.008395 0.000046
2830 EU-NG-4 HERS4_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10585 0.00058
2831 EU-NG-4 HERS4_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.015695 0.000086
2832 EU-NG-4 HERS4_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009855 0.000054
2833 EU-NG-4 HERS4_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0292 0.00016
2834 EU-NG-4 HERS4_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.034675 0.00019
2835 EU-NG-4 HERS4_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06205 0.00034
2836 EU-NG-4 HERS4_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.022995 0.000126
2837 EU-NG-4 HERS4_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13359 0.000732
2838 EU-NG-4 HERS4_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.09928 0.000544
2839 EU-NG-4 HERS4_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 11.68 0.064
2840 EU-NG-4 HERS4_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0060225 0.000033
2841 EU-NG-4 HERS4_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000365 0.000002
2842 EU-NG-4 HERS4_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 3.650365 0.020002
2843 EU-NG-4 HERS4_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.000006
2844 EU-NG-4 HERS4_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
2845 EU-NG-4 HERS4_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01606 0.000088
2846 EU-NG-4 HERS4_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000438 0.00000024
2847 EU-NG-4 HERS4_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.004015 0.000022
2848 EU-NG-4 HERS4_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0002044 0.00000112
2849 EU-NG-4 HERS4_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0003066 0.00000168
2850 EU-NG-4 HERS4_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0031025 0.000017
2851 EU-NG-4 HERS4_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
2852 EU-NG-4 HERS4_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001387 0.0000076
2853 EU-NG-4 HERS4_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000949 0.0000052
2854 EU-NG-4 HERS4_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000042
2855 EU-NG-4 HERS4_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000876 0.00000048
2856 EU-NG-4 HERS4_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.008395 0.000046
2857 EU-NG-4 HERS4_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10585 0.00058
2858 EU-NG-4 HERS4_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.015695 0.000086
2859 EU-NG-4 HERS4_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009855 0.000054
2860 EU-NG-4 HERS4_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0292 0.00016
2861 EU-NG-4 HERS4_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.034675 0.00019
2862 EU-NG-4 HERS4_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06205 0.00034
2863 EU-NG-4 HERS4_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.022995 0.000126
2864 EU-NG-4 HERS4_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13359 0.000732
2865 EU-NG-4 HERS4_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.09928 0.000544
2866 EU-NG-4 HERS4_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 11.68 0.064
2867 EU-NG-4 HERS4_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0060225 0.000033
2868 EU-NG-4 HERS4_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000365 0.000002
2869 EU-NG-4 HERS4_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 3.650365 0.020002
2870 EU-NG-4 HERS4_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.000006
2871 EU-NG-4 HERS4_03 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00030059 0.00000165
2872 EU-NG-4 HERS4_03 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00661294 0.00003624
2873 EU-NG-4 HERS4_03 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001804 0.0000001
2874 EU-NG-4 HERS4_03 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00165324 0.00000906
2875 EU-NG-4 HERS4_03 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00008416 0.00000046
2876 EU-NG-4 HERS4_03 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012625 0.00000069
2877 EU-NG-4 HERS4_03 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0012775 0.000007
2878 EU-NG-4 HERS4_03 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075147 0.00000412
2879 EU-NG-4 HERS4_03 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00057112 0.00000313
2880 EU-NG-4 HERS4_03 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00039076 0.00000214
2881 EU-NG-4 HERS4_03 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00315618 0.00001729
2882 EU-NG-4 HERS4_03 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003607 0.0000002
2883 EU-NG-4 HERS4_03 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00345676 0.00001894
2884 EU-NG-4 HERS4_03 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04358529 0.00023882
2885 EU-NG-4 HERS4_03 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00646265 0.00003541
2886 EU-NG-4 HERS4_03 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00405794 0.00002224
2887 EU-NG-4 HERS4_03 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01202353 0.00006588
2888 EU-NG-4 HERS4_03 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01427794 0.00007824
2889 EU-NG-4 HERS4_03 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02555 0.00014
2890 EU-NG-4 HERS4_03 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00946853 0.00005188
2891 EU-NG-4 HERS4_03 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05500765 0.00030141
2892 EU-NG-4 HERS4_03 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04088 0.000224
2893 EU-NG-4 HERS4_03 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.80941176 0.02635294
2894 EU-NG-4 HERS4_03 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00247985 0.00001359
2895 EU-NG-4 HERS4_03 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00015029 0.00000082
2896 EU-NG-4 HERS4_03 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.50309147 0.00823612
2897 EU-NG-4 HERS4_03 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045088 0.00000247
2898 EU-NG-4 HERS4_04 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00030059 0.00000165
2899 EU-NG-4 HERS4_04 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00661294 0.00003624
2900 EU-NG-4 HERS4_04 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001804 0.0000001
2901 EU-NG-4 HERS4_04 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00165324 0.00000906
2902 EU-NG-4 HERS4_04 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00008416 0.00000046
2903 EU-NG-4 HERS4_04 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012625 0.00000069
2904 EU-NG-4 HERS4_04 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0012775 0.000007
2905 EU-NG-4 HERS4_04 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075147 0.00000412
2906 EU-NG-4 HERS4_04 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00057112 0.00000313
2907 EU-NG-4 HERS4_04 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00039076 0.00000214
2908 EU-NG-4 HERS4_04 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00315618 0.00001729
2909 EU-NG-4 HERS4_04 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003607 0.0000002
2910 EU-NG-4 HERS4_04 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00345676 0.00001894
2911 EU-NG-4 HERS4_04 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04358529 0.00023882
2912 EU-NG-4 HERS4_04 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00646265 0.00003541
2913 EU-NG-4 HERS4_04 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00405794 0.00002224
2914 EU-NG-4 HERS4_04 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01202353 0.00006588
2915 EU-NG-4 HERS4_04 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01427794 0.00007824
2916 EU-NG-4 HERS4_04 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02555 0.00014
2917 EU-NG-4 HERS4_04 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00946853 0.00005188
2918 EU-NG-4 HERS4_04 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05500765 0.00030141
2919 EU-NG-4 HERS4_04 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04088 0.000224
2920 EU-NG-4 HERS4_04 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.80941176 0.02635294
2921 EU-NG-4 HERS4_04 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00247985 0.00001359
2922 EU-NG-4 HERS4_04 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00015029 0.00000082
2923 EU-NG-4 HERS4_04 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.50309147 0.00823612
2924 EU-NG-4 HERS4_04 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045088 0.00000247
2925 EU-NG-4 HERS4_05 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012882 0.00000071
2926 EU-NG-4 HERS4_05 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00283412 0.00001553
2927 EU-NG-4 HERS4_05 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000773 0.00000004
2928 EU-NG-4 HERS4_05 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00070853 0.00000388
2929 EU-NG-4 HERS4_05 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003607 0.0000002
2930 EU-NG-4 HERS4_05 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005411 0.0000003
2931 EU-NG-4 HERS4_05 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0005475 0.000003
2932 EU-NG-4 HERS4_05 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032206 0.00000176
2933 EU-NG-4 HERS4_05 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00024476 0.00000134
2934 EU-NG-4 HERS4_05 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016747 0.00000092
2935 EU-NG-4 HERS4_05 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00135265 0.00000741
2936 EU-NG-4 HERS4_05 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001546 0.00000008
2937 EU-NG-4 HERS4_05 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00148147 0.00000812
2938 EU-NG-4 HERS4_05 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01867941 0.00010235
2939 EU-NG-4 HERS4_05 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00276971 0.00001518
2940 EU-NG-4 HERS4_05 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00173912 0.00000953
2941 EU-NG-4 HERS4_05 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00515294 0.00002824
2942 EU-NG-4 HERS4_05 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00611912 0.00003353
2943 EU-NG-4 HERS4_05 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01095 0.00006
2944 EU-NG-4 HERS4_05 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00405794 0.00002224
2945 EU-NG-4 HERS4_05 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02357471 0.00012918
2946 EU-NG-4 HERS4_05 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01752 0.000096
2947 EU-NG-4 HERS4_05 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.06117647 0.01129412
2948 EU-NG-4 HERS4_05 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00106279 0.00000582
2949 EU-NG-4 HERS4_05 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006441 0.00000035
2950 EU-NG-4 HERS4_05 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.64418206 0.00352976
2951 EU-NG-4 HERS4_05 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00019324 0.00000106
2952 EU-NG-4 HERS4_06 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006871 0.00000038
2953 EU-NG-4 HERS4_06 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00151153 0.00000828
2954 EU-NG-4 HERS4_06 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000412 0.00000002
2955 EU-NG-4 HERS4_06 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00037788 0.00000207
2956 EU-NG-4 HERS4_06 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00001924 0.00000011
2957 EU-NG-4 HERS4_06 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002886 0.00000016
2958 EU-NG-4 HERS4_06 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000292 0.0000016
2959 EU-NG-4 HERS4_06 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
2960 EU-NG-4 HERS4_06 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013054 0.00000072
2961 EU-NG-4 HERS4_06 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008932 0.00000049
2962 EU-NG-4 HERS4_06 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00072141 0.00000395
2963 EU-NG-4 HERS4_06 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000824 0.00000005
2964 EU-NG-4 HERS4_06 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00079012 0.00000433
2965 EU-NG-4 HERS4_06 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00996235 0.00005459
2966 EU-NG-4 HERS4_06 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00147718 0.00000809
2967 EU-NG-4 HERS4_06 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00092753 0.00000508
2968 EU-NG-4 HERS4_06 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00274824 0.00001506
2969 EU-NG-4 HERS4_06 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00326353 0.00001788
2970 EU-NG-4 HERS4_06 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00584 0.000032
2971 EU-NG-4 HERS4_06 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00216424 0.00001186
2972 EU-NG-4 HERS4_06 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01257318 0.00006889
2973 EU-NG-4 HERS4_06 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009344 0.0000512
2974 EU-NG-4 HERS4_06 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.09929412 0.00602353
2975 EU-NG-4 HERS4_06 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00056682 0.00000311
2976 EU-NG-4 HERS4_06 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003435 0.00000019
2977 EU-NG-4 HERS4_06 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.34356376 0.00188254
2978 EU-NG-4 HERS4_06 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
2979 EU-NG-4 HERS4_07 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
2980 EU-NG-4 HERS4_07 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
2981 EU-NG-4 HERS4_07 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
2982 EU-NG-4 HERS4_07 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
2983 EU-NG-4 HERS4_07 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
2984 EU-NG-4 HERS4_07 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
2985 EU-NG-4 HERS4_07 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
2986 EU-NG-4 HERS4_07 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
2987 EU-NG-4 HERS4_07 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
2988 EU-NG-4 HERS4_07 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
2989 EU-NG-4 HERS4_07 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
2990 EU-NG-4 HERS4_07 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
2991 EU-NG-4 HERS4_07 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
2992 EU-NG-4 HERS4_07 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
2993 EU-NG-4 HERS4_07 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
2994 EU-NG-4 HERS4_07 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
2995 EU-NG-4 HERS4_07 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
2996 EU-NG-4 HERS4_07 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
2997 EU-NG-4 HERS4_07 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
2998 EU-NG-4 HERS4_07 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
2999 EU-NG-4 HERS4_07 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3000 EU-NG-4 HERS4_07 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3001 EU-NG-4 HERS4_07 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3002 EU-NG-4 HERS4_07 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3003 EU-NG-4 HERS4_07 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3004 EU-NG-4 HERS4_07 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3005 EU-NG-4 HERS4_07 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3006 EU-NG-4 HERS4_08 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3007 EU-NG-4 HERS4_08 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
3008 EU-NG-4 HERS4_08 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
3009 EU-NG-4 HERS4_08 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
3010 EU-NG-4 HERS4_08 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
3011 EU-NG-4 HERS4_08 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
3012 EU-NG-4 HERS4_08 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3013 EU-NG-4 HERS4_08 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3014 EU-NG-4 HERS4_08 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
3015 EU-NG-4 HERS4_08 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
3016 EU-NG-4 HERS4_08 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
3017 EU-NG-4 HERS4_08 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3018 EU-NG-4 HERS4_08 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
3019 EU-NG-4 HERS4_08 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
3020 EU-NG-4 HERS4_08 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
3021 EU-NG-4 HERS4_08 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
3022 EU-NG-4 HERS4_08 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
3023 EU-NG-4 HERS4_08 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
3024 EU-NG-4 HERS4_08 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3025 EU-NG-4 HERS4_08 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
3026 EU-NG-4 HERS4_08 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3027 EU-NG-4 HERS4_08 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3028 EU-NG-4 HERS4_08 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3029 EU-NG-4 HERS4_08 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3030 EU-NG-4 HERS4_08 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3031 EU-NG-4 HERS4_08 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3032 EU-NG-4 HERS4_08 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3033 EU-NG-4 HERS4_09 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3034 EU-NG-4 HERS4_09 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
3035 EU-NG-4 HERS4_09 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
3036 EU-NG-4 HERS4_09 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
3037 EU-NG-4 HERS4_09 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
3038 EU-NG-4 HERS4_09 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
3039 EU-NG-4 HERS4_09 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3040 EU-NG-4 HERS4_09 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3041 EU-NG-4 HERS4_09 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
3042 EU-NG-4 HERS4_09 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
3043 EU-NG-4 HERS4_09 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
3044 EU-NG-4 HERS4_09 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3045 EU-NG-4 HERS4_09 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
3046 EU-NG-4 HERS4_09 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
3047 EU-NG-4 HERS4_09 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
3048 EU-NG-4 HERS4_09 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
3049 EU-NG-4 HERS4_09 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
3050 EU-NG-4 HERS4_09 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
3051 EU-NG-4 HERS4_09 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3052 EU-NG-4 HERS4_09 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
3053 EU-NG-4 HERS4_09 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3054 EU-NG-4 HERS4_09 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3055 EU-NG-4 HERS4_09 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3056 EU-NG-4 HERS4_09 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3057 EU-NG-4 HERS4_09 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3058 EU-NG-4 HERS4_09 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3059 EU-NG-4 HERS4_09 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3060 EU-NG-4 HERS4_10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3061 EU-NG-4 HERS4_10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
3062 EU-NG-4 HERS4_10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
3063 EU-NG-4 HERS4_10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
3064 EU-NG-4 HERS4_10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
3065 EU-NG-4 HERS4_10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
3066 EU-NG-4 HERS4_10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3067 EU-NG-4 HERS4_10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3068 EU-NG-4 HERS4_10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
3069 EU-NG-4 HERS4_10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
3070 EU-NG-4 HERS4_10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
3071 EU-NG-4 HERS4_10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3072 EU-NG-4 HERS4_10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
3073 EU-NG-4 HERS4_10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
3074 EU-NG-4 HERS4_10 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
3075 EU-NG-4 HERS4_10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
3076 EU-NG-4 HERS4_10 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
3077 EU-NG-4 HERS4_10 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
3078 EU-NG-4 HERS4_10 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3079 EU-NG-4 HERS4_10 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
3080 EU-NG-4 HERS4_10 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3081 EU-NG-4 HERS4_10 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3082 EU-NG-4 HERS4_10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3083 EU-NG-4 HERS4_10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3084 EU-NG-4 HERS4_10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3085 EU-NG-4 HERS4_10 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3086 EU-NG-4 HERS4_10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3087 EU-NG-4 HERS4_11 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3088 EU-NG-4 HERS4_11 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
3089 EU-NG-4 HERS4_11 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
3090 EU-NG-4 HERS4_11 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
3091 EU-NG-4 HERS4_11 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
3092 EU-NG-4 HERS4_11 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
3093 EU-NG-4 HERS4_11 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3094 EU-NG-4 HERS4_11 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3095 EU-NG-4 HERS4_11 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
3096 EU-NG-4 HERS4_11 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
3097 EU-NG-4 HERS4_11 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
3098 EU-NG-4 HERS4_11 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3099 EU-NG-4 HERS4_11 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
3100 EU-NG-4 HERS4_11 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
3101 EU-NG-4 HERS4_11 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
3102 EU-NG-4 HERS4_11 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
3103 EU-NG-4 HERS4_11 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
3104 EU-NG-4 HERS4_11 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
3105 EU-NG-4 HERS4_11 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3106 EU-NG-4 HERS4_11 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
3107 EU-NG-4 HERS4_11 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3108 EU-NG-4 HERS4_11 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3109 EU-NG-4 HERS4_11 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3110 EU-NG-4 HERS4_11 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3111 EU-NG-4 HERS4_11 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3112 EU-NG-4 HERS4_11 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3113 EU-NG-4 HERS4_11 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3114 EU-NG-4 HERS4_12 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000226
3115 EU-NG-4 HERS4_12 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00906918 0.00004969
3116 EU-NG-4 HERS4_12 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002473 0.00000014
3117 EU-NG-4 HERS4_12 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00226729 0.00001242
3118 EU-NG-4 HERS4_12 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00011543 0.00000063
3119 EU-NG-4 HERS4_12 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017314 0.00000095
3120 EU-NG-4 HERS4_12 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001752 0.0000096
3121 EU-NG-4 HERS4_12 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103059 0.00000565
3122 EU-NG-4 HERS4_12 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00078325 0.00000429
3123 EU-NG-4 HERS4_12 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00053591 0.00000294
3124 EU-NG-4 HERS4_12 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00432847 0.00002372
3125 EU-NG-4 HERS4_12 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004947 0.00000027
3126 EU-NG-4 HERS4_12 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00474071 0.00002598
3127 EU-NG-4 HERS4_12 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05977412 0.00032753
3128 EU-NG-4 HERS4_12 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00886306 0.00004856
3129 EU-NG-4 HERS4_12 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00556518 0.00003049
3130 EU-NG-4 HERS4_12 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01648941 0.00009035
3131 EU-NG-4 HERS4_12 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01958118 0.00010729
3132 EU-NG-4 HERS4_12 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03504 0.000192
3133 EU-NG-4 HERS4_12 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01298541 0.00007115
3134 EU-NG-4 HERS4_12 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07543906 0.00041336
3135 EU-NG-4 HERS4_12 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.056064 0.0003072
3136 EU-NG-4 HERS4_12 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 6.59576471 0.03614118
3137 EU-NG-4 HERS4_12 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00340094 0.00001864
3138 EU-NG-4 HERS4_12 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000113
3139 EU-NG-4 HERS4_12 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.06138259 0.01129525
3140 EU-NG-4 HERS4_12 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00061835 0.00000339
3141 EU-NG-4 HERS5_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3142 EU-NG-4 HERS5_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01606 0.000088
3143 EU-NG-4 HERS5_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000438 0.00000024
3144 EU-NG-4 HERS5_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.004015 0.000022
3145 EU-NG-4 HERS5_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0002044 0.00000112
3146 EU-NG-4 HERS5_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0003066 0.00000168
3147 EU-NG-4 HERS5_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0031025 0.000017
3148 EU-NG-4 HERS5_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
3149 EU-NG-4 HERS5_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001387 0.0000076
3150 EU-NG-4 HERS5_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000949 0.0000052
3151 EU-NG-4 HERS5_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000042
3152 EU-NG-4 HERS5_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000876 0.00000048
3153 EU-NG-4 HERS5_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.008395 0.000046
3154 EU-NG-4 HERS5_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10585 0.00058
3155 EU-NG-4 HERS5_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.015695 0.000086
3156 EU-NG-4 HERS5_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009855 0.000054
3157 EU-NG-4 HERS5_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0292 0.00016
3158 EU-NG-4 HERS5_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.034675 0.00019
3159 EU-NG-4 HERS5_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06205 0.00034
3160 EU-NG-4 HERS5_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.022995 0.000126
3161 EU-NG-4 HERS5_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13359 0.000732
3162 EU-NG-4 HERS5_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.09928 0.000544
3163 EU-NG-4 HERS5_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 11.68 0.064
3164 EU-NG-4 HERS5_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0060225 0.000033
3165 EU-NG-4 HERS5_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000365 0.000002
3166 EU-NG-4 HERS5_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 3.650365 0.020002
3167 EU-NG-4 HERS5_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.000006
3168 EU-NG-4 HERS5_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3169 EU-NG-4 HERS5_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01606 0.000088
3170 EU-NG-4 HERS5_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000438 0.00000024
3171 EU-NG-4 HERS5_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.004015 0.000022
3172 EU-NG-4 HERS5_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0002044 0.00000112
3173 EU-NG-4 HERS5_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0003066 0.00000168
3174 EU-NG-4 HERS5_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0031025 0.000017
3175 EU-NG-4 HERS5_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
3176 EU-NG-4 HERS5_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001387 0.0000076
3177 EU-NG-4 HERS5_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000949 0.0000052
3178 EU-NG-4 HERS5_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000042
3179 EU-NG-4 HERS5_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000876 0.00000048
3180 EU-NG-4 HERS5_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.008395 0.000046
3181 EU-NG-4 HERS5_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10585 0.00058
3182 EU-NG-4 HERS5_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.015695 0.000086
3183 EU-NG-4 HERS5_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009855 0.000054
3184 EU-NG-4 HERS5_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0292 0.00016
3185 EU-NG-4 HERS5_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.034675 0.00019
3186 EU-NG-4 HERS5_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06205 0.00034
3187 EU-NG-4 HERS5_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.022995 0.000126
3188 EU-NG-4 HERS5_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13359 0.000732
3189 EU-NG-4 HERS5_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.09928 0.000544
3190 EU-NG-4 HERS5_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 11.68 0.064
3191 EU-NG-4 HERS5_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0060225 0.000033
3192 EU-NG-4 HERS5_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000365 0.000002
3193 EU-NG-4 HERS5_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 3.650365 0.020002
3194 EU-NG-4 HERS5_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.000006
3195 EU-NG-4 HERS5_03 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3196 EU-NG-4 HERS5_03 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01606 0.000088
3197 EU-NG-4 HERS5_03 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000438 0.00000024
3198 EU-NG-4 HERS5_03 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.004015 0.000022
3199 EU-NG-4 HERS5_03 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0002044 0.00000112
3200 EU-NG-4 HERS5_03 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0003066 0.00000168
3201 EU-NG-4 HERS5_03 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0031025 0.000017
3202 EU-NG-4 HERS5_03 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
3203 EU-NG-4 HERS5_03 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001387 0.0000076
3204 EU-NG-4 HERS5_03 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000949 0.0000052
3205 EU-NG-4 HERS5_03 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000042
3206 EU-NG-4 HERS5_03 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000876 0.00000048
3207 EU-NG-4 HERS5_03 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.008395 0.000046
3208 EU-NG-4 HERS5_03 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10585 0.00058
3209 EU-NG-4 HERS5_03 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.015695 0.000086
3210 EU-NG-4 HERS5_03 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009855 0.000054
3211 EU-NG-4 HERS5_03 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0292 0.00016
3212 EU-NG-4 HERS5_03 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.034675 0.00019
3213 EU-NG-4 HERS5_03 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06205 0.00034
3214 EU-NG-4 HERS5_03 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.022995 0.000126
3215 EU-NG-4 HERS5_03 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13359 0.000732
3216 EU-NG-4 HERS5_03 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.09928 0.000544
3217 EU-NG-4 HERS5_03 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 11.68 0.064
3218 EU-NG-4 HERS5_03 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0060225 0.000033
3219 EU-NG-4 HERS5_03 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000365 0.000002
3220 EU-NG-4 HERS5_03 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 3.650365 0.020002
3221 EU-NG-4 HERS5_03 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.000006
3222 EU-NG-4 HERS5_04 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3223 EU-NG-4 HERS5_04 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01606 0.000088
3224 EU-NG-4 HERS5_04 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000438 0.00000024
3225 EU-NG-4 HERS5_04 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.004015 0.000022
3226 EU-NG-4 HERS5_04 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0002044 0.00000112
3227 EU-NG-4 HERS5_04 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0003066 0.00000168
3228 EU-NG-4 HERS5_04 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0031025 0.000017
3229 EU-NG-4 HERS5_04 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
3230 EU-NG-4 HERS5_04 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001387 0.0000076
3231 EU-NG-4 HERS5_04 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000949 0.0000052
3232 EU-NG-4 HERS5_04 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000042
3233 EU-NG-4 HERS5_04 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000876 0.00000048
3234 EU-NG-4 HERS5_04 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.008395 0.000046
3235 EU-NG-4 HERS5_04 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.10585 0.00058
3236 EU-NG-4 HERS5_04 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.015695 0.000086
3237 EU-NG-4 HERS5_04 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009855 0.000054
3238 EU-NG-4 HERS5_04 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0292 0.00016
3239 EU-NG-4 HERS5_04 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.034675 0.00019
3240 EU-NG-4 HERS5_04 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06205 0.00034
3241 EU-NG-4 HERS5_04 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.022995 0.000126
3242 EU-NG-4 HERS5_04 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13359 0.000732
3243 EU-NG-4 HERS5_04 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.09928 0.000544
3244 EU-NG-4 HERS5_04 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 11.68 0.064
3245 EU-NG-4 HERS5_04 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0060225 0.000033
3246 EU-NG-4 HERS5_04 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000365 0.000002
3247 EU-NG-4 HERS5_04 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 3.650365 0.020002
3248 EU-NG-4 HERS5_04 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.000006
3249 EU-NG-4 HERS5_05 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3250 EU-NG-4 HERS5_05 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00944706 0.00005176
3251 EU-NG-4 HERS5_05 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002576 0.00000014
3252 EU-NG-4 HERS5_05 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3253 EU-NG-4 HERS5_05 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00012024 0.00000066
3254 EU-NG-4 HERS5_05 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00018035 0.00000099
3255 EU-NG-4 HERS5_05 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
3256 EU-NG-4 HERS5_05 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00107353 0.00000588
3257 EU-NG-4 HERS5_05 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00081588 0.00000447
3258 EU-NG-4 HERS5_05 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00055824 0.00000306
3259 EU-NG-4 HERS5_05 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00002471
3260 EU-NG-4 HERS5_05 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
3261 EU-NG-4 HERS5_05 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00493824 0.00002706
3262 EU-NG-4 HERS5_05 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06226471 0.00034118
3263 EU-NG-4 HERS5_05 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00923235 0.00005059
3264 EU-NG-4 HERS5_05 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00579706 0.00003176
3265 EU-NG-4 HERS5_05 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01717647 0.00009412
3266 EU-NG-4 HERS5_05 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02039706 0.00011176
3267 EU-NG-4 HERS5_05 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0365 0.0002
3268 EU-NG-4 HERS5_05 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01352647 0.00007412
3269 EU-NG-4 HERS5_05 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07858235 0.00043059
3270 EU-NG-4 HERS5_05 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00032
3271 EU-NG-4 HERS5_05 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 6.87058824 0.03764706
3272 EU-NG-4 HERS5_05 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00354265 0.00001941
3273 EU-NG-4 HERS5_05 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021471 0.00000118
3274 EU-NG-4 HERS5_05 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.14727353 0.01176588
3275 EU-NG-4 HERS5_05 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00064412 0.00000353
3276 EU-NG-4 HERS5_06 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3277 EU-NG-4 HERS5_06 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00944706 0.00005176
3278 EU-NG-4 HERS5_06 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002576 0.00000014
3279 EU-NG-4 HERS5_06 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3280 EU-NG-4 HERS5_06 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00012024 0.00000066
3281 EU-NG-4 HERS5_06 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00018035 0.00000099
3282 EU-NG-4 HERS5_06 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
3283 EU-NG-4 HERS5_06 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00107353 0.00000588
3284 EU-NG-4 HERS5_06 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00081588 0.00000447
3285 EU-NG-4 HERS5_06 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00055824 0.00000306
3286 EU-NG-4 HERS5_06 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00002471
3287 EU-NG-4 HERS5_06 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
3288 EU-NG-4 HERS5_06 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00493824 0.00002706
3289 EU-NG-4 HERS5_06 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06226471 0.00034118
3290 EU-NG-4 HERS5_06 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00923235 0.00005059
3291 EU-NG-4 HERS5_06 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00579706 0.00003176
3292 EU-NG-4 HERS5_06 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01717647 0.00009412
3293 EU-NG-4 HERS5_06 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02039706 0.00011176
3294 EU-NG-4 HERS5_06 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0365 0.0002
3295 EU-NG-4 HERS5_06 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01352647 0.00007412
3296 EU-NG-4 HERS5_06 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07858235 0.00043059
3297 EU-NG-4 HERS5_06 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00032
3298 EU-NG-4 HERS5_06 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 6.87058824 0.03764706
3299 EU-NG-4 HERS5_06 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00354265 0.00001941
3300 EU-NG-4 HERS5_06 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021471 0.00000118
3301 EU-NG-4 HERS5_06 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.14727353 0.01176588
3302 EU-NG-4 HERS5_06 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00064412 0.00000353
3303 EU-NG-4 HERS5_07 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3304 EU-NG-4 HERS5_07 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00944706 0.00005176
3305 EU-NG-4 HERS5_07 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002576 0.00000014
3306 EU-NG-4 HERS5_07 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3307 EU-NG-4 HERS5_07 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00012024 0.00000066
3308 EU-NG-4 HERS5_07 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00018035 0.00000099
3309 EU-NG-4 HERS5_07 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
3310 EU-NG-4 HERS5_07 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00107353 0.00000588
3311 EU-NG-4 HERS5_07 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00081588 0.00000447
3312 EU-NG-4 HERS5_07 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00055824 0.00000306
3313 EU-NG-4 HERS5_07 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00002471
3314 EU-NG-4 HERS5_07 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
3315 EU-NG-4 HERS5_07 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00493824 0.00002706
3316 EU-NG-4 HERS5_07 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06226471 0.00034118
3317 EU-NG-4 HERS5_07 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00923235 0.00005059
3318 EU-NG-4 HERS5_07 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00579706 0.00003176
3319 EU-NG-4 HERS5_07 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01717647 0.00009412
3320 EU-NG-4 HERS5_07 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02039706 0.00011176
3321 EU-NG-4 HERS5_07 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0365 0.0002
3322 EU-NG-4 HERS5_07 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01352647 0.00007412
3323 EU-NG-4 HERS5_07 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07858235 0.00043059
3324 EU-NG-4 HERS5_07 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00032
3325 EU-NG-4 HERS5_07 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 6.87058824 0.03764706
3326 EU-NG-4 HERS5_07 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00354265 0.00001941
3327 EU-NG-4 HERS5_07 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021471 0.00000118
3328 EU-NG-4 HERS5_07 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.14727353 0.01176588
3329 EU-NG-4 HERS5_07 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00064412 0.00000353
3330 EU-NG-4 HERS5_08 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3331 EU-NG-4 HERS5_08 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00944706 0.00005176
3332 EU-NG-4 HERS5_08 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002576 0.00000014
3333 EU-NG-4 HERS5_08 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3334 EU-NG-4 HERS5_08 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00012024 0.00000066
3335 EU-NG-4 HERS5_08 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00018035 0.00000099
3336 EU-NG-4 HERS5_08 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001825 0.00001
3337 EU-NG-4 HERS5_08 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00107353 0.00000588
3338 EU-NG-4 HERS5_08 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00081588 0.00000447
3339 EU-NG-4 HERS5_08 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00055824 0.00000306
3340 EU-NG-4 HERS5_08 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00002471
3341 EU-NG-4 HERS5_08 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
3342 EU-NG-4 HERS5_08 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00493824 0.00002706
3343 EU-NG-4 HERS5_08 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06226471 0.00034118
3344 EU-NG-4 HERS5_08 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00923235 0.00005059
3345 EU-NG-4 HERS5_08 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00579706 0.00003176
3346 EU-NG-4 HERS5_08 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01717647 0.00009412
3347 EU-NG-4 HERS5_08 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02039706 0.00011176
3348 EU-NG-4 HERS5_08 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0365 0.0002
3349 EU-NG-4 HERS5_08 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01352647 0.00007412
3350 EU-NG-4 HERS5_08 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07858235 0.00043059
3351 EU-NG-4 HERS5_08 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0584 0.00032
3352 EU-NG-4 HERS5_08 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 6.87058824 0.03764706
3353 EU-NG-4 HERS5_08 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00354265 0.00001941
3354 EU-NG-4 HERS5_08 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021471 0.00000118
3355 EU-NG-4 HERS5_08 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.14727353 0.01176588
3356 EU-NG-4 HERS5_08 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00064412 0.00000353
3357 EU-NG-4 HERS5_09 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00171679 0.00000941
3358 EU-NG-4 HERS5_09 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03776934 0.00020696
3359 EU-NG-4 HERS5_09 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010301 0.00000056
3360 EU-NG-4 HERS5_09 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00944234 0.00005174
3361 EU-NG-4 HERS5_09 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.0004807 0.00000263
3362 EU-NG-4 HERS5_09 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00072105 0.00000395
3363 EU-NG-4 HERS5_09 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00729635 0.00003998
3364 EU-NG-4 HERS5_09 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429197 0.00002352
3365 EU-NG-4 HERS5_09 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0032619 0.00001787
3366 EU-NG-4 HERS5_09 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00223182 0.00001223
3367 EU-NG-4 HERS5_09 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01802628 0.00009877
3368 EU-NG-4 HERS5_09 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020601 0.00000113
3369 EU-NG-4 HERS5_09 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01974306 0.00010818
3370 EU-NG-4 HERS5_09 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24893429 0.00136402
3371 EU-NG-4 HERS5_09 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03691095 0.00020225
3372 EU-NG-4 HERS5_09 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02317664 0.000127
3373 EU-NG-4 HERS5_09 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06867153 0.00037628
3374 EU-NG-4 HERS5_09 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08154744 0.00044684
3375 EU-NG-4 HERS5_09 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.145927 0.0007996
3376 EU-NG-4 HERS5_09 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05407883 0.00029632
3377 EU-NG-4 HERS5_09 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.31417225 0.00172149
3378 EU-NG-4 HERS5_09 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.2334832 0.00127936
3379 EU-NG-4 HERS5_09 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 27.46861176 0.15051294
3380 EU-NG-4 HERS5_09 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0141635 0.00007761
3381 EU-NG-4 HERS5_09 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085839 0.0000047
3382 EU-NG-4 HERS5_09 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 8.58479957 0.04704
3383 EU-NG-4 HERS5_09 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257518 0.00001411
3384 EU-NG-4 HERS6_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00034353 0.00000188
3385 EU-NG-4 HERS6_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00755765 0.00004141
3386 EU-NG-4 HERS6_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3387 EU-NG-4 HERS6_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00188941 0.00001035
3388 EU-NG-4 HERS6_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00009619 0.00000053
3389 EU-NG-4 HERS6_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00014428 0.00000079
3390 EU-NG-4 HERS6_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00146 0.000008
3391 EU-NG-4 HERS6_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085882 0.00000471
3392 EU-NG-4 HERS6_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00065271 0.00000358
3393 EU-NG-4 HERS6_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00044659 0.00000245
3394 EU-NG-4 HERS6_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00360706 0.00001976
3395 EU-NG-4 HERS6_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004122 0.00000023
3396 EU-NG-4 HERS6_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00395059 0.00002165
3397 EU-NG-4 HERS6_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04981176 0.00027294
3398 EU-NG-4 HERS6_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00738588 0.00004047
3399 EU-NG-4 HERS6_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00463765 0.00002541
3400 EU-NG-4 HERS6_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00007529
3401 EU-NG-4 HERS6_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01631765 0.00008941
3402 EU-NG-4 HERS6_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0292 0.00016
3403 EU-NG-4 HERS6_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01082118 0.00005929
3404 EU-NG-4 HERS6_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06286588 0.00034447
3405 EU-NG-4 HERS6_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04672 0.000256
3406 EU-NG-4 HERS6_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.49647059 0.03011765
3407 EU-NG-4 HERS6_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00283412 0.00001553
3408 EU-NG-4 HERS6_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3409 EU-NG-4 HERS6_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71781882 0.00941271
3410 EU-NG-4 HERS6_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000282
3411 EU-NG-4 HERS6_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00034353 0.00000188
3412 EU-NG-4 HERS6_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00755765 0.00004141
3413 EU-NG-4 HERS6_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3414 EU-NG-4 HERS6_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00188941 0.00001035
3415 EU-NG-4 HERS6_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00009619 0.00000053
3416 EU-NG-4 HERS6_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00014428 0.00000079
3417 EU-NG-4 HERS6_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00146 0.000008
3418 EU-NG-4 HERS6_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085882 0.00000471
3419 EU-NG-4 HERS6_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00065271 0.00000358
3420 EU-NG-4 HERS6_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00044659 0.00000245
3421 EU-NG-4 HERS6_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00360706 0.00001976
3422 EU-NG-4 HERS6_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004122 0.00000023
3423 EU-NG-4 HERS6_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00395059 0.00002165
3424 EU-NG-4 HERS6_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04981176 0.00027294
3425 EU-NG-4 HERS6_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00738588 0.00004047
3426 EU-NG-4 HERS6_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00463765 0.00002541
3427 EU-NG-4 HERS6_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00007529
3428 EU-NG-4 HERS6_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01631765 0.00008941
3429 EU-NG-4 HERS6_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0292 0.00016
3430 EU-NG-4 HERS6_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01082118 0.00005929
3431 EU-NG-4 HERS6_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06286588 0.00034447
3432 EU-NG-4 HERS6_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04672 0.000256
3433 EU-NG-4 HERS6_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.49647059 0.03011765
3434 EU-NG-4 HERS6_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00283412 0.00001553
3435 EU-NG-4 HERS6_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3436 EU-NG-4 HERS6_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71781882 0.00941271
3437 EU-NG-4 HERS6_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000282
3438 EU-NG-4 HERS6_03 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00030059 0.00000165
3439 EU-NG-4 HERS6_03 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00661294 0.00003624
3440 EU-NG-4 HERS6_03 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001804 0.0000001
3441 EU-NG-4 HERS6_03 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00165324 0.00000906
3442 EU-NG-4 HERS6_03 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00008416 0.00000046
3443 EU-NG-4 HERS6_03 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012625 0.00000069
3444 EU-NG-4 HERS6_03 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0012775 0.000007
3445 EU-NG-4 HERS6_03 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075147 0.00000412
3446 EU-NG-4 HERS6_03 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00057112 0.00000313
3447 EU-NG-4 HERS6_03 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00039076 0.00000214
3448 EU-NG-4 HERS6_03 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00315618 0.00001729
3449 EU-NG-4 HERS6_03 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003607 0.0000002
3450 EU-NG-4 HERS6_03 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00345676 0.00001894
3451 EU-NG-4 HERS6_03 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04358529 0.00023882
3452 EU-NG-4 HERS6_03 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00646265 0.00003541
3453 EU-NG-4 HERS6_03 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00405794 0.00002224
3454 EU-NG-4 HERS6_03 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01202353 0.00006588
3455 EU-NG-4 HERS6_03 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01427794 0.00007824
3456 EU-NG-4 HERS6_03 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02555 0.00014
3457 EU-NG-4 HERS6_03 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00946853 0.00005188
3458 EU-NG-4 HERS6_03 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05500765 0.00030141
3459 EU-NG-4 HERS6_03 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04088 0.000224
3460 EU-NG-4 HERS6_03 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.80941176 0.02635294
3461 EU-NG-4 HERS6_03 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00247985 0.00001359
3462 EU-NG-4 HERS6_03 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00015029 0.00000082
3463 EU-NG-4 HERS6_03 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.50309147 0.00823612
3464 EU-NG-4 HERS6_03 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045088 0.00000247
3465 EU-NG-4 HERS6_04 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
3466 EU-NG-4 HERS6_04 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00226729 0.00001242
3467 EU-NG-4 HERS6_04 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000618 0.00000003
3468 EU-NG-4 HERS6_04 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00056682 0.00000311
3469 EU-NG-4 HERS6_04 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00002886 0.00000016
3470 EU-NG-4 HERS6_04 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004328 0.00000024
3471 EU-NG-4 HERS6_04 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000438 0.0000024
3472 EU-NG-4 HERS6_04 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3473 EU-NG-4 HERS6_04 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00019581 0.00000107
3474 EU-NG-4 HERS6_04 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013398 0.00000073
3475 EU-NG-4 HERS6_04 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00108212 0.00000593
3476 EU-NG-4 HERS6_04 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001237 0.00000007
3477 EU-NG-4 HERS6_04 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00118518 0.00000649
3478 EU-NG-4 HERS6_04 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01494353 0.00008188
3479 EU-NG-4 HERS6_04 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00221576 0.00001214
3480 EU-NG-4 HERS6_04 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00139129 0.00000762
3481 EU-NG-4 HERS6_04 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00412235 0.00002259
3482 EU-NG-4 HERS6_04 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00489529 0.00002682
3483 EU-NG-4 HERS6_04 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00876 0.000048
3484 EU-NG-4 HERS6_04 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324635 0.00001779
3485 EU-NG-4 HERS6_04 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01885976 0.00010334
3486 EU-NG-4 HERS6_04 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.014016 0.0000768
3487 EU-NG-4 HERS6_04 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.64894118 0.00903529
3488 EU-NG-4 HERS6_04 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085024 0.00000466
3489 EU-NG-4 HERS6_04 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
3490 EU-NG-4 HERS6_04 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.51534565 0.00282381
3491 EU-NG-4 HERS6_04 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00015459 0.00000085
3492 EU-NG-4 HERS6_05 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00034353 0.00000188
3493 EU-NG-4 HERS6_05 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00755765 0.00004141
3494 EU-NG-4 HERS6_05 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3495 EU-NG-4 HERS6_05 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00188941 0.00001035
3496 EU-NG-4 HERS6_05 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00009619 0.00000053
3497 EU-NG-4 HERS6_05 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00014428 0.00000079
3498 EU-NG-4 HERS6_05 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00146 0.000008
3499 EU-NG-4 HERS6_05 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085882 0.00000471
3500 EU-NG-4 HERS6_05 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00065271 0.00000358
3501 EU-NG-4 HERS6_05 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00044659 0.00000245
3502 EU-NG-4 HERS6_05 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00360706 0.00001976
3503 EU-NG-4 HERS6_05 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004122 0.00000023
3504 EU-NG-4 HERS6_05 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00395059 0.00002165
3505 EU-NG-4 HERS6_05 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04981176 0.00027294
3506 EU-NG-4 HERS6_05 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00738588 0.00004047
3507 EU-NG-4 HERS6_05 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00463765 0.00002541
3508 EU-NG-4 HERS6_05 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01374118 0.00007529
3509 EU-NG-4 HERS6_05 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01631765 0.00008941
3510 EU-NG-4 HERS6_05 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0292 0.00016
3511 EU-NG-4 HERS6_05 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01082118 0.00005929
3512 EU-NG-4 HERS6_05 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.06286588 0.00034447
3513 EU-NG-4 HERS6_05 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04672 0.000256
3514 EU-NG-4 HERS6_05 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.49647059 0.03011765
3515 EU-NG-4 HERS6_05 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00283412 0.00001553
3516 EU-NG-4 HERS6_05 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3517 EU-NG-4 HERS6_05 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71781882 0.00941271
3518 EU-NG-4 HERS6_05 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000282
3519 EU-NG-4 HERS6_06 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3520 EU-NG-4 HERS6_06 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
3521 EU-NG-4 HERS6_06 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
3522 EU-NG-4 HERS6_06 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
3523 EU-NG-4 HERS6_06 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
3524 EU-NG-4 HERS6_06 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
3525 EU-NG-4 HERS6_06 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3526 EU-NG-4 HERS6_06 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3527 EU-NG-4 HERS6_06 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
3528 EU-NG-4 HERS6_06 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
3529 EU-NG-4 HERS6_06 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
3530 EU-NG-4 HERS6_06 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3531 EU-NG-4 HERS6_06 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
3532 EU-NG-4 HERS6_06 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
3533 EU-NG-4 HERS6_06 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
3534 EU-NG-4 HERS6_06 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
3535 EU-NG-4 HERS6_06 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
3536 EU-NG-4 HERS6_06 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
3537 EU-NG-4 HERS6_06 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3538 EU-NG-4 HERS6_06 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
3539 EU-NG-4 HERS6_06 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3540 EU-NG-4 HERS6_06 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3541 EU-NG-4 HERS6_06 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3542 EU-NG-4 HERS6_06 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3543 EU-NG-4 HERS6_06 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3544 EU-NG-4 HERS6_06 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3545 EU-NG-4 HERS6_06 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3546 EU-NG-4 HERS6_07 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3547 EU-NG-4 HERS6_07 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
3548 EU-NG-4 HERS6_07 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
3549 EU-NG-4 HERS6_07 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
3550 EU-NG-4 HERS6_07 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
3551 EU-NG-4 HERS6_07 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
3552 EU-NG-4 HERS6_07 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3553 EU-NG-4 HERS6_07 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3554 EU-NG-4 HERS6_07 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
3555 EU-NG-4 HERS6_07 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
3556 EU-NG-4 HERS6_07 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
3557 EU-NG-4 HERS6_07 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3558 EU-NG-4 HERS6_07 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
3559 EU-NG-4 HERS6_07 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
3560 EU-NG-4 HERS6_07 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
3561 EU-NG-4 HERS6_07 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
3562 EU-NG-4 HERS6_07 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
3563 EU-NG-4 HERS6_07 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
3564 EU-NG-4 HERS6_07 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3565 EU-NG-4 HERS6_07 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
3566 EU-NG-4 HERS6_07 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3567 EU-NG-4 HERS6_07 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3568 EU-NG-4 HERS6_07 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3569 EU-NG-4 HERS6_07 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3570 EU-NG-4 HERS6_07 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3571 EU-NG-4 HERS6_07 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3572 EU-NG-4 HERS6_07 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3573 EU-NG-4 HERS6_08 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3574 EU-NG-4 HERS6_08 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
3575 EU-NG-4 HERS6_08 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
3576 EU-NG-4 HERS6_08 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
3577 EU-NG-4 HERS6_08 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
3578 EU-NG-4 HERS6_08 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
3579 EU-NG-4 HERS6_08 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3580 EU-NG-4 HERS6_08 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3581 EU-NG-4 HERS6_08 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
3582 EU-NG-4 HERS6_08 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
3583 EU-NG-4 HERS6_08 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
3584 EU-NG-4 HERS6_08 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3585 EU-NG-4 HERS6_08 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
3586 EU-NG-4 HERS6_08 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
3587 EU-NG-4 HERS6_08 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
3588 EU-NG-4 HERS6_08 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
3589 EU-NG-4 HERS6_08 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
3590 EU-NG-4 HERS6_08 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
3591 EU-NG-4 HERS6_08 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3592 EU-NG-4 HERS6_08 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
3593 EU-NG-4 HERS6_08 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3594 EU-NG-4 HERS6_08 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3595 EU-NG-4 HERS6_08 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3596 EU-NG-4 HERS6_08 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3597 EU-NG-4 HERS6_08 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3598 EU-NG-4 HERS6_08 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3599 EU-NG-4 HERS6_08 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3600 EU-NG-4 HERS6_09 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3601 EU-NG-4 HERS6_09 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
3602 EU-NG-4 HERS6_09 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
3603 EU-NG-4 HERS6_09 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
3604 EU-NG-4 HERS6_09 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
3605 EU-NG-4 HERS6_09 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
3606 EU-NG-4 HERS6_09 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3607 EU-NG-4 HERS6_09 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3608 EU-NG-4 HERS6_09 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
3609 EU-NG-4 HERS6_09 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
3610 EU-NG-4 HERS6_09 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
3611 EU-NG-4 HERS6_09 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3612 EU-NG-4 HERS6_09 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
3613 EU-NG-4 HERS6_09 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
3614 EU-NG-4 HERS6_09 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
3615 EU-NG-4 HERS6_09 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
3616 EU-NG-4 HERS6_09 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
3617 EU-NG-4 HERS6_09 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
3618 EU-NG-4 HERS6_09 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3619 EU-NG-4 HERS6_09 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
3620 EU-NG-4 HERS6_09 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3621 EU-NG-4 HERS6_09 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3622 EU-NG-4 HERS6_09 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3623 EU-NG-4 HERS6_09 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3624 EU-NG-4 HERS6_09 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3625 EU-NG-4 HERS6_09 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3626 EU-NG-4 HERS6_09 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3627 EU-NG-4 HERS6_10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
3628 EU-NG-4 HERS6_10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
3629 EU-NG-4 HERS6_10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
3630 EU-NG-4 HERS6_10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
3631 EU-NG-4 HERS6_10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
3632 EU-NG-4 HERS6_10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
3633 EU-NG-4 HERS6_10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
3634 EU-NG-4 HERS6_10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
3635 EU-NG-4 HERS6_10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
3636 EU-NG-4 HERS6_10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
3637 EU-NG-4 HERS6_10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
3638 EU-NG-4 HERS6_10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
3639 EU-NG-4 HERS6_10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
3640 EU-NG-4 HERS6_10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
3641 EU-NG-4 HERS6_10 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
3642 EU-NG-4 HERS6_10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
3643 EU-NG-4 HERS6_10 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
3644 EU-NG-4 HERS6_10 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
3645 EU-NG-4 HERS6_10 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3646 EU-NG-4 HERS6_10 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
3647 EU-NG-4 HERS6_10 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
3648 EU-NG-4 HERS6_10 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
3649 EU-NG-4 HERS6_10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
3650 EU-NG-4 HERS6_10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
3651 EU-NG-4 HERS6_10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
3652 EU-NG-4 HERS6_10 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
3653 EU-NG-4 HERS6_10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
3654 EU-NG-4 HERS6_11 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00041224 0.00000226
3655 EU-NG-4 HERS6_11 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00906918 0.00004969
3656 EU-NG-4 HERS6_11 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002473 0.00000014
3657 EU-NG-4 HERS6_11 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00226729 0.00001242
3658 EU-NG-4 HERS6_11 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00011543 0.00000063
3659 EU-NG-4 HERS6_11 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017314 0.00000095
3660 EU-NG-4 HERS6_11 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001752 0.0000096
3661 EU-NG-4 HERS6_11 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103059 0.00000565
3662 EU-NG-4 HERS6_11 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00078325 0.00000429
3663 EU-NG-4 HERS6_11 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00053591 0.00000294
3664 EU-NG-4 HERS6_11 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00432847 0.00002372
3665 EU-NG-4 HERS6_11 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004947 0.00000027
3666 EU-NG-4 HERS6_11 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00474071 0.00002598
3667 EU-NG-4 HERS6_11 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05977412 0.00032753
3668 EU-NG-4 HERS6_11 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00886306 0.00004856
3669 EU-NG-4 HERS6_11 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00556518 0.00003049
3670 EU-NG-4 HERS6_11 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01648941 0.00009035
3671 EU-NG-4 HERS6_11 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01958118 0.00010729
3672 EU-NG-4 HERS6_11 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03504 0.000192
3673 EU-NG-4 HERS6_11 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01298541 0.00007115
3674 EU-NG-4 HERS6_11 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07543906 0.00041336
3675 EU-NG-4 HERS6_11 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.056064 0.0003072
3676 EU-NG-4 HERS6_11 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 6.59576471 0.03614118
3677 EU-NG-4 HERS6_11 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00340094 0.00001864
3678 EU-NG-4 HERS6_11 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020612 0.00000113
3679 EU-NG-4 HERS6_11 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.06138259 0.01129525
3680 EU-NG-4 HERS6_11 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00061835 0.00000339
3681 EU-NG-4 HELT4_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3682 EU-NG-4 HELT4_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3683 EU-NG-4 HELT4_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3684 EU-NG-4 HELT4_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3685 EU-NG-4 HELT4_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3686 EU-NG-4 HELT4_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3687 EU-NG-4 HELT4_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3688 EU-NG-4 HELT4_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3689 EU-NG-4 HELT4_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3690 EU-NG-4 HELT4_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3691 EU-NG-4 HELT4_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3692 EU-NG-4 HELT4_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3693 EU-NG-4 HELT4_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3694 EU-NG-4 HELT4_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3695 EU-NG-4 HELT4_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3696 EU-NG-4 HELT4_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3697 EU-NG-4 HELT4_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3698 EU-NG-4 HELT4_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3699 EU-NG-4 HELT4_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3700 EU-NG-4 HELT4_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3701 EU-NG-4 HELT4_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3702 EU-NG-4 HELT4_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3703 EU-NG-4 HELT4_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3704 EU-NG-4 HELT4_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3705 EU-NG-4 HELT4_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3706 EU-NG-4 HELT4_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3707 EU-NG-4 HELT4_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3708 EU-NG-4 HELT4_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3709 EU-NG-4 HELT4_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3710 EU-NG-4 HELT4_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3711 EU-NG-4 HELT4_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3712 EU-NG-4 HELT4_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3713 EU-NG-4 HELT4_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3714 EU-NG-4 HELT4_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3715 EU-NG-4 HELT4_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3716 EU-NG-4 HELT4_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3717 EU-NG-4 HELT4_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3718 EU-NG-4 HELT4_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3719 EU-NG-4 HELT4_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3720 EU-NG-4 HELT4_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3721 EU-NG-4 HELT4_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3722 EU-NG-4 HELT4_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3723 EU-NG-4 HELT4_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3724 EU-NG-4 HELT4_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3725 EU-NG-4 HELT4_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3726 EU-NG-4 HELT4_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3727 EU-NG-4 HELT4_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3728 EU-NG-4 HELT4_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3729 EU-NG-4 HELT4_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3730 EU-NG-4 HELT4_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3731 EU-NG-4 HELT4_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3732 EU-NG-4 HELT4_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3733 EU-NG-4 HELT4_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3734 EU-NG-4 HELT4_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3735 EU-NG-4 HELT4_03 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3736 EU-NG-4 HELT4_03 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3737 EU-NG-4 HELT4_03 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3738 EU-NG-4 HELT4_03 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3739 EU-NG-4 HELT4_03 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3740 EU-NG-4 HELT4_03 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3741 EU-NG-4 HELT4_03 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3742 EU-NG-4 HELT4_03 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3743 EU-NG-4 HELT4_03 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3744 EU-NG-4 HELT4_03 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3745 EU-NG-4 HELT4_03 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3746 EU-NG-4 HELT4_03 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3747 EU-NG-4 HELT4_03 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3748 EU-NG-4 HELT4_03 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3749 EU-NG-4 HELT4_03 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3750 EU-NG-4 HELT4_03 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3751 EU-NG-4 HELT4_03 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3752 EU-NG-4 HELT4_03 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3753 EU-NG-4 HELT4_03 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3754 EU-NG-4 HELT4_03 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3755 EU-NG-4 HELT4_03 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3756 EU-NG-4 HELT4_03 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3757 EU-NG-4 HELT4_03 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3758 EU-NG-4 HELT4_03 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3759 EU-NG-4 HELT4_03 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3760 EU-NG-4 HELT4_03 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3761 EU-NG-4 HELT4_03 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3762 EU-NG-4 HELT4_04 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3763 EU-NG-4 HELT4_04 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3764 EU-NG-4 HELT4_04 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3765 EU-NG-4 HELT4_04 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3766 EU-NG-4 HELT4_04 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3767 EU-NG-4 HELT4_04 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3768 EU-NG-4 HELT4_04 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3769 EU-NG-4 HELT4_04 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3770 EU-NG-4 HELT4_04 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3771 EU-NG-4 HELT4_04 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3772 EU-NG-4 HELT4_04 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3773 EU-NG-4 HELT4_04 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3774 EU-NG-4 HELT4_04 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3775 EU-NG-4 HELT4_04 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3776 EU-NG-4 HELT4_04 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3777 EU-NG-4 HELT4_04 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3778 EU-NG-4 HELT4_04 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3779 EU-NG-4 HELT4_04 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3780 EU-NG-4 HELT4_04 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3781 EU-NG-4 HELT4_04 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3782 EU-NG-4 HELT4_04 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3783 EU-NG-4 HELT4_04 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3784 EU-NG-4 HELT4_04 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3785 EU-NG-4 HELT4_04 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3786 EU-NG-4 HELT4_04 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3787 EU-NG-4 HELT4_04 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3788 EU-NG-4 HELT4_04 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3789 EU-NG-4 HELT4_05 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3790 EU-NG-4 HELT4_05 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3791 EU-NG-4 HELT4_05 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3792 EU-NG-4 HELT4_05 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3793 EU-NG-4 HELT4_05 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3794 EU-NG-4 HELT4_05 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3795 EU-NG-4 HELT4_05 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3796 EU-NG-4 HELT4_05 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3797 EU-NG-4 HELT4_05 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3798 EU-NG-4 HELT4_05 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3799 EU-NG-4 HELT4_05 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3800 EU-NG-4 HELT4_05 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3801 EU-NG-4 HELT4_05 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3802 EU-NG-4 HELT4_05 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3803 EU-NG-4 HELT4_05 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3804 EU-NG-4 HELT4_05 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3805 EU-NG-4 HELT4_05 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3806 EU-NG-4 HELT4_05 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3807 EU-NG-4 HELT4_05 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3808 EU-NG-4 HELT4_05 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3809 EU-NG-4 HELT4_05 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3810 EU-NG-4 HELT4_05 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3811 EU-NG-4 HELT4_05 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3812 EU-NG-4 HELT4_05 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3813 EU-NG-4 HELT4_05 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3814 EU-NG-4 HELT4_05 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3815 EU-NG-4 HELT4_05 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3816 EU-NG-4 HELT4_06 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3817 EU-NG-4 HELT4_06 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3818 EU-NG-4 HELT4_06 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3819 EU-NG-4 HELT4_06 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3820 EU-NG-4 HELT4_06 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3821 EU-NG-4 HELT4_06 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3822 EU-NG-4 HELT4_06 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3823 EU-NG-4 HELT4_06 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3824 EU-NG-4 HELT4_06 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3825 EU-NG-4 HELT4_06 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3826 EU-NG-4 HELT4_06 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3827 EU-NG-4 HELT4_06 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3828 EU-NG-4 HELT4_06 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3829 EU-NG-4 HELT4_06 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3830 EU-NG-4 HELT4_06 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3831 EU-NG-4 HELT4_06 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3832 EU-NG-4 HELT4_06 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3833 EU-NG-4 HELT4_06 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3834 EU-NG-4 HELT4_06 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3835 EU-NG-4 HELT4_06 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3836 EU-NG-4 HELT4_06 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3837 EU-NG-4 HELT4_06 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3838 EU-NG-4 HELT4_06 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3839 EU-NG-4 HELT4_06 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3840 EU-NG-4 HELT4_06 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3841 EU-NG-4 HELT4_06 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3842 EU-NG-4 HELT4_06 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3843 EU-NG-4 HELT4_07 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3844 EU-NG-4 HELT4_07 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3845 EU-NG-4 HELT4_07 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3846 EU-NG-4 HELT4_07 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3847 EU-NG-4 HELT4_07 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3848 EU-NG-4 HELT4_07 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3849 EU-NG-4 HELT4_07 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3850 EU-NG-4 HELT4_07 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3851 EU-NG-4 HELT4_07 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3852 EU-NG-4 HELT4_07 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3853 EU-NG-4 HELT4_07 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3854 EU-NG-4 HELT4_07 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3855 EU-NG-4 HELT4_07 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3856 EU-NG-4 HELT4_07 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3857 EU-NG-4 HELT4_07 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3858 EU-NG-4 HELT4_07 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3859 EU-NG-4 HELT4_07 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3860 EU-NG-4 HELT4_07 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3861 EU-NG-4 HELT4_07 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3862 EU-NG-4 HELT4_07 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3863 EU-NG-4 HELT4_07 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3864 EU-NG-4 HELT4_07 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3865 EU-NG-4 HELT4_07 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3866 EU-NG-4 HELT4_07 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3867 EU-NG-4 HELT4_07 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3868 EU-NG-4 HELT4_07 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3869 EU-NG-4 HELT4_07 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3870 EU-NG-4 HELT4_08 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3871 EU-NG-4 HELT4_08 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3872 EU-NG-4 HELT4_08 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3873 EU-NG-4 HELT4_08 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3874 EU-NG-4 HELT4_08 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3875 EU-NG-4 HELT4_08 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3876 EU-NG-4 HELT4_08 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3877 EU-NG-4 HELT4_08 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3878 EU-NG-4 HELT4_08 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3879 EU-NG-4 HELT4_08 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3880 EU-NG-4 HELT4_08 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3881 EU-NG-4 HELT4_08 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3882 EU-NG-4 HELT4_08 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3883 EU-NG-4 HELT4_08 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3884 EU-NG-4 HELT4_08 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3885 EU-NG-4 HELT4_08 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3886 EU-NG-4 HELT4_08 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3887 EU-NG-4 HELT4_08 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3888 EU-NG-4 HELT4_08 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3889 EU-NG-4 HELT4_08 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3890 EU-NG-4 HELT4_08 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3891 EU-NG-4 HELT4_08 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3892 EU-NG-4 HELT4_08 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3893 EU-NG-4 HELT4_08 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3894 EU-NG-4 HELT4_08 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3895 EU-NG-4 HELT4_08 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3896 EU-NG-4 HELT4_08 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3897 EU-NG-4 HELT4_09 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3898 EU-NG-4 HELT4_09 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3899 EU-NG-4 HELT4_09 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3900 EU-NG-4 HELT4_09 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3901 EU-NG-4 HELT4_09 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3902 EU-NG-4 HELT4_09 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3903 EU-NG-4 HELT4_09 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3904 EU-NG-4 HELT4_09 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3905 EU-NG-4 HELT4_09 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3906 EU-NG-4 HELT4_09 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3907 EU-NG-4 HELT4_09 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3908 EU-NG-4 HELT4_09 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3909 EU-NG-4 HELT4_09 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3910 EU-NG-4 HELT4_09 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3911 EU-NG-4 HELT4_09 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3912 EU-NG-4 HELT4_09 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3913 EU-NG-4 HELT4_09 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3914 EU-NG-4 HELT4_09 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3915 EU-NG-4 HELT4_09 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3916 EU-NG-4 HELT4_09 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3917 EU-NG-4 HELT4_09 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3918 EU-NG-4 HELT4_09 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3919 EU-NG-4 HELT4_09 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3920 EU-NG-4 HELT4_09 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3921 EU-NG-4 HELT4_09 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3922 EU-NG-4 HELT4_09 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3923 EU-NG-4 HELT4_09 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3924 EU-NG-4 HELT4_10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3925 EU-NG-4 HELT4_10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3926 EU-NG-4 HELT4_10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3927 EU-NG-4 HELT4_10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3928 EU-NG-4 HELT4_10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3929 EU-NG-4 HELT4_10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3930 EU-NG-4 HELT4_10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3931 EU-NG-4 HELT4_10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3932 EU-NG-4 HELT4_10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3933 EU-NG-4 HELT4_10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3934 EU-NG-4 HELT4_10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3935 EU-NG-4 HELT4_10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3936 EU-NG-4 HELT4_10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3937 EU-NG-4 HELT4_10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3938 EU-NG-4 HELT4_10 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3939 EU-NG-4 HELT4_10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3940 EU-NG-4 HELT4_10 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3941 EU-NG-4 HELT4_10 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3942 EU-NG-4 HELT4_10 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3943 EU-NG-4 HELT4_10 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3944 EU-NG-4 HELT4_10 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3945 EU-NG-4 HELT4_10 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3946 EU-NG-4 HELT4_10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3947 EU-NG-4 HELT4_10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3948 EU-NG-4 HELT4_10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3949 EU-NG-4 HELT4_10 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3950 EU-NG-4 HELT4_10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3951 EU-NG-4 HELT4_11 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3952 EU-NG-4 HELT4_11 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3953 EU-NG-4 HELT4_11 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3954 EU-NG-4 HELT4_11 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3955 EU-NG-4 HELT4_11 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3956 EU-NG-4 HELT4_11 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3957 EU-NG-4 HELT4_11 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3958 EU-NG-4 HELT4_11 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3959 EU-NG-4 HELT4_11 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3960 EU-NG-4 HELT4_11 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3961 EU-NG-4 HELT4_11 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3962 EU-NG-4 HELT4_11 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3963 EU-NG-4 HELT4_11 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3964 EU-NG-4 HELT4_11 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3965 EU-NG-4 HELT4_11 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3966 EU-NG-4 HELT4_11 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3967 EU-NG-4 HELT4_11 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3968 EU-NG-4 HELT4_11 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3969 EU-NG-4 HELT4_11 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3970 EU-NG-4 HELT4_11 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3971 EU-NG-4 HELT4_11 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3972 EU-NG-4 HELT4_11 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
3973 EU-NG-4 HELT4_11 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
3974 EU-NG-4 HELT4_11 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
3975 EU-NG-4 HELT4_11 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
3976 EU-NG-4 HELT4_11 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
3977 EU-NG-4 HELT4_11 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
3978 EU-NG-4 HELT4_12 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
3979 EU-NG-4 HELT4_12 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
3980 EU-NG-4 HELT4_12 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
3981 EU-NG-4 HELT4_12 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
3982 EU-NG-4 HELT4_12 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
3983 EU-NG-4 HELT4_12 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
3984 EU-NG-4 HELT4_12 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
3985 EU-NG-4 HELT4_12 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
3986 EU-NG-4 HELT4_12 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
3987 EU-NG-4 HELT4_12 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
3988 EU-NG-4 HELT4_12 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
3989 EU-NG-4 HELT4_12 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
3990 EU-NG-4 HELT4_12 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
3991 EU-NG-4 HELT4_12 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
3992 EU-NG-4 HELT4_12 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
3993 EU-NG-4 HELT4_12 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
3994 EU-NG-4 HELT4_12 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
3995 EU-NG-4 HELT4_12 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
3996 EU-NG-4 HELT4_12 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
3997 EU-NG-4 HELT4_12 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
3998 EU-NG-4 HELT4_12 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
3999 EU-NG-4 HELT4_12 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4000 EU-NG-4 HELT4_12 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4001 EU-NG-4 HELT4_12 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4002 EU-NG-4 HELT4_12 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4003 EU-NG-4 HELT4_12 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4004 EU-NG-4 HELT4_12 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4005 EU-NG-4 HELT4_13 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4006 EU-NG-4 HELT4_13 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4007 EU-NG-4 HELT4_13 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4008 EU-NG-4 HELT4_13 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4009 EU-NG-4 HELT4_13 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4010 EU-NG-4 HELT4_13 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4011 EU-NG-4 HELT4_13 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4012 EU-NG-4 HELT4_13 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4013 EU-NG-4 HELT4_13 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4014 EU-NG-4 HELT4_13 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4015 EU-NG-4 HELT4_13 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4016 EU-NG-4 HELT4_13 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4017 EU-NG-4 HELT4_13 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4018 EU-NG-4 HELT4_13 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4019 EU-NG-4 HELT4_13 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4020 EU-NG-4 HELT4_13 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4021 EU-NG-4 HELT4_13 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4022 EU-NG-4 HELT4_13 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4023 EU-NG-4 HELT4_13 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4024 EU-NG-4 HELT4_13 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4025 EU-NG-4 HELT4_13 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4026 EU-NG-4 HELT4_13 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4027 EU-NG-4 HELT4_13 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4028 EU-NG-4 HELT4_13 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4029 EU-NG-4 HELT4_13 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4030 EU-NG-4 HELT4_13 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4031 EU-NG-4 HELT4_13 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4032 EU-NG-4 HELT4_14 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4033 EU-NG-4 HELT4_14 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4034 EU-NG-4 HELT4_14 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4035 EU-NG-4 HELT4_14 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4036 EU-NG-4 HELT4_14 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4037 EU-NG-4 HELT4_14 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4038 EU-NG-4 HELT4_14 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4039 EU-NG-4 HELT4_14 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4040 EU-NG-4 HELT4_14 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4041 EU-NG-4 HELT4_14 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4042 EU-NG-4 HELT4_14 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4043 EU-NG-4 HELT4_14 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4044 EU-NG-4 HELT4_14 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4045 EU-NG-4 HELT4_14 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4046 EU-NG-4 HELT4_14 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4047 EU-NG-4 HELT4_14 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4048 EU-NG-4 HELT4_14 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4049 EU-NG-4 HELT4_14 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4050 EU-NG-4 HELT4_14 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4051 EU-NG-4 HELT4_14 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4052 EU-NG-4 HELT4_14 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4053 EU-NG-4 HELT4_14 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4054 EU-NG-4 HELT4_14 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4055 EU-NG-4 HELT4_14 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4056 EU-NG-4 HELT4_14 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4057 EU-NG-4 HELT4_14 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4058 EU-NG-4 HELT4_14 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4059 EU-NG-4 HELT4_15 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4060 EU-NG-4 HELT4_15 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4061 EU-NG-4 HELT4_15 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4062 EU-NG-4 HELT4_15 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4063 EU-NG-4 HELT4_15 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4064 EU-NG-4 HELT4_15 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4065 EU-NG-4 HELT4_15 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4066 EU-NG-4 HELT4_15 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4067 EU-NG-4 HELT4_15 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4068 EU-NG-4 HELT4_15 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4069 EU-NG-4 HELT4_15 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4070 EU-NG-4 HELT4_15 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4071 EU-NG-4 HELT4_15 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4072 EU-NG-4 HELT4_15 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4073 EU-NG-4 HELT4_15 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4074 EU-NG-4 HELT4_15 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4075 EU-NG-4 HELT4_15 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4076 EU-NG-4 HELT4_15 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4077 EU-NG-4 HELT4_15 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4078 EU-NG-4 HELT4_15 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4079 EU-NG-4 HELT4_15 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4080 EU-NG-4 HELT4_15 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4081 EU-NG-4 HELT4_15 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4082 EU-NG-4 HELT4_15 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4083 EU-NG-4 HELT4_15 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4084 EU-NG-4 HELT4_15 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4085 EU-NG-4 HELT4_15 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4086 EU-NG-4 HELT4_16 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4087 EU-NG-4 HELT4_16 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4088 EU-NG-4 HELT4_16 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4089 EU-NG-4 HELT4_16 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4090 EU-NG-4 HELT4_16 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4091 EU-NG-4 HELT4_16 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4092 EU-NG-4 HELT4_16 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4093 EU-NG-4 HELT4_16 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4094 EU-NG-4 HELT4_16 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4095 EU-NG-4 HELT4_16 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4096 EU-NG-4 HELT4_16 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4097 EU-NG-4 HELT4_16 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4098 EU-NG-4 HELT4_16 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4099 EU-NG-4 HELT4_16 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4100 EU-NG-4 HELT4_16 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4101 EU-NG-4 HELT4_16 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4102 EU-NG-4 HELT4_16 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4103 EU-NG-4 HELT4_16 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4104 EU-NG-4 HELT4_16 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4105 EU-NG-4 HELT4_16 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4106 EU-NG-4 HELT4_16 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4107 EU-NG-4 HELT4_16 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4108 EU-NG-4 HELT4_16 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4109 EU-NG-4 HELT4_16 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4110 EU-NG-4 HELT4_16 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4111 EU-NG-4 HELT4_16 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4112 EU-NG-4 HELT4_16 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4113 EU-NG-4 HELT4_17 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4114 EU-NG-4 HELT4_17 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4115 EU-NG-4 HELT4_17 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4116 EU-NG-4 HELT4_17 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4117 EU-NG-4 HELT4_17 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4118 EU-NG-4 HELT4_17 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4119 EU-NG-4 HELT4_17 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4120 EU-NG-4 HELT4_17 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4121 EU-NG-4 HELT4_17 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4122 EU-NG-4 HELT4_17 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4123 EU-NG-4 HELT4_17 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4124 EU-NG-4 HELT4_17 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4125 EU-NG-4 HELT4_17 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4126 EU-NG-4 HELT4_17 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4127 EU-NG-4 HELT4_17 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4128 EU-NG-4 HELT4_17 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4129 EU-NG-4 HELT4_17 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4130 EU-NG-4 HELT4_17 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4131 EU-NG-4 HELT4_17 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4132 EU-NG-4 HELT4_17 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4133 EU-NG-4 HELT4_17 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4134 EU-NG-4 HELT4_17 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4135 EU-NG-4 HELT4_17 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4136 EU-NG-4 HELT4_17 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4137 EU-NG-4 HELT4_17 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4138 EU-NG-4 HELT4_17 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4139 EU-NG-4 HELT4_17 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4140 EU-NG-4 HELT4_18 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4141 EU-NG-4 HELT4_18 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4142 EU-NG-4 HELT4_18 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4143 EU-NG-4 HELT4_18 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4144 EU-NG-4 HELT4_18 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4145 EU-NG-4 HELT4_18 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4146 EU-NG-4 HELT4_18 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4147 EU-NG-4 HELT4_18 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4148 EU-NG-4 HELT4_18 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4149 EU-NG-4 HELT4_18 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4150 EU-NG-4 HELT4_18 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4151 EU-NG-4 HELT4_18 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4152 EU-NG-4 HELT4_18 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4153 EU-NG-4 HELT4_18 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4154 EU-NG-4 HELT4_18 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4155 EU-NG-4 HELT4_18 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4156 EU-NG-4 HELT4_18 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4157 EU-NG-4 HELT4_18 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4158 EU-NG-4 HELT4_18 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4159 EU-NG-4 HELT4_18 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4160 EU-NG-4 HELT4_18 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4161 EU-NG-4 HELT4_18 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4162 EU-NG-4 HELT4_18 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4163 EU-NG-4 HELT4_18 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4164 EU-NG-4 HELT4_18 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4165 EU-NG-4 HELT4_18 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4166 EU-NG-4 HELT4_18 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4167 EU-NG-4 HELT4_19 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4168 EU-NG-4 HELT4_19 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4169 EU-NG-4 HELT4_19 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4170 EU-NG-4 HELT4_19 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4171 EU-NG-4 HELT4_19 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4172 EU-NG-4 HELT4_19 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4173 EU-NG-4 HELT4_19 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4174 EU-NG-4 HELT4_19 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4175 EU-NG-4 HELT4_19 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4176 EU-NG-4 HELT4_19 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4177 EU-NG-4 HELT4_19 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4178 EU-NG-4 HELT4_19 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4179 EU-NG-4 HELT4_19 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4180 EU-NG-4 HELT4_19 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4181 EU-NG-4 HELT4_19 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4182 EU-NG-4 HELT4_19 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4183 EU-NG-4 HELT4_19 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4184 EU-NG-4 HELT4_19 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4185 EU-NG-4 HELT4_19 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4186 EU-NG-4 HELT4_19 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4187 EU-NG-4 HELT4_19 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4188 EU-NG-4 HELT4_19 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4189 EU-NG-4 HELT4_19 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4190 EU-NG-4 HELT4_19 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4191 EU-NG-4 HELT4_19 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4192 EU-NG-4 HELT4_19 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4193 EU-NG-4 HELT4_19 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4194 EU-NG-4 HELT4_20 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4195 EU-NG-4 HELT4_20 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4196 EU-NG-4 HELT4_20 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4197 EU-NG-4 HELT4_20 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4198 EU-NG-4 HELT4_20 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4199 EU-NG-4 HELT4_20 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4200 EU-NG-4 HELT4_20 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4201 EU-NG-4 HELT4_20 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4202 EU-NG-4 HELT4_20 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4203 EU-NG-4 HELT4_20 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4204 EU-NG-4 HELT4_20 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4205 EU-NG-4 HELT4_20 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4206 EU-NG-4 HELT4_20 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4207 EU-NG-4 HELT4_20 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4208 EU-NG-4 HELT4_20 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4209 EU-NG-4 HELT4_20 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4210 EU-NG-4 HELT4_20 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4211 EU-NG-4 HELT4_20 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4212 EU-NG-4 HELT4_20 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4213 EU-NG-4 HELT4_20 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4214 EU-NG-4 HELT4_20 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4215 EU-NG-4 HELT4_20 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4216 EU-NG-4 HELT4_20 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4217 EU-NG-4 HELT4_20 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4218 EU-NG-4 HELT4_20 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4219 EU-NG-4 HELT4_20 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4220 EU-NG-4 HELT4_20 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4221 EU-NG-4 HELT4_21 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4222 EU-NG-4 HELT4_21 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4223 EU-NG-4 HELT4_21 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4224 EU-NG-4 HELT4_21 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4225 EU-NG-4 HELT4_21 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4226 EU-NG-4 HELT4_21 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4227 EU-NG-4 HELT4_21 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4228 EU-NG-4 HELT4_21 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4229 EU-NG-4 HELT4_21 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4230 EU-NG-4 HELT4_21 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4231 EU-NG-4 HELT4_21 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4232 EU-NG-4 HELT4_21 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4233 EU-NG-4 HELT4_21 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4234 EU-NG-4 HELT4_21 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4235 EU-NG-4 HELT4_21 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4236 EU-NG-4 HELT4_21 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4237 EU-NG-4 HELT4_21 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4238 EU-NG-4 HELT4_21 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4239 EU-NG-4 HELT4_21 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4240 EU-NG-4 HELT4_21 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4241 EU-NG-4 HELT4_21 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4242 EU-NG-4 HELT4_21 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4243 EU-NG-4 HELT4_21 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4244 EU-NG-4 HELT4_21 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4245 EU-NG-4 HELT4_21 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4246 EU-NG-4 HELT4_21 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4247 EU-NG-4 HELT4_21 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4248 EU-NG-4 HELT4_22 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006871 0.00000038
4249 EU-NG-4 HELT4_22 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00151153 0.00000828
4250 EU-NG-4 HELT4_22 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000412 0.00000002
4251 EU-NG-4 HELT4_22 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00037788 0.00000207
4252 EU-NG-4 HELT4_22 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00001924 0.00000011
4253 EU-NG-4 HELT4_22 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002886 0.00000016
4254 EU-NG-4 HELT4_22 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000292 0.0000016
4255 EU-NG-4 HELT4_22 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4256 EU-NG-4 HELT4_22 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013054 0.00000072
4257 EU-NG-4 HELT4_22 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008932 0.00000049
4258 EU-NG-4 HELT4_22 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00072141 0.00000395
4259 EU-NG-4 HELT4_22 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000824 0.00000005
4260 EU-NG-4 HELT4_22 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00079012 0.00000433
4261 EU-NG-4 HELT4_22 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00996235 0.00005459
4262 EU-NG-4 HELT4_22 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00147718 0.00000809
4263 EU-NG-4 HELT4_22 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00092753 0.00000508
4264 EU-NG-4 HELT4_22 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00274824 0.00001506
4265 EU-NG-4 HELT4_22 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00326353 0.00001788
4266 EU-NG-4 HELT4_22 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00584 0.000032
4267 EU-NG-4 HELT4_22 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00216424 0.00001186
4268 EU-NG-4 HELT4_22 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01257318 0.00006889
4269 EU-NG-4 HELT4_22 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009344 0.0000512
4270 EU-NG-4 HELT4_22 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.09929412 0.00602353
4271 EU-NG-4 HELT4_22 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00056682 0.00000311
4272 EU-NG-4 HELT4_22 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003435 0.00000019
4273 EU-NG-4 HELT4_22 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.34356376 0.00188254
4274 EU-NG-4 HELT4_22 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
4275 EU-NG-4 HELT4_23 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006871 0.00000038
4276 EU-NG-4 HELT4_23 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00151153 0.00000828
4277 EU-NG-4 HELT4_23 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000412 0.00000002
4278 EU-NG-4 HELT4_23 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00037788 0.00000207
4279 EU-NG-4 HELT4_23 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00001924 0.00000011
4280 EU-NG-4 HELT4_23 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002886 0.00000016
4281 EU-NG-4 HELT4_23 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000292 0.0000016
4282 EU-NG-4 HELT4_23 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4283 EU-NG-4 HELT4_23 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013054 0.00000072
4284 EU-NG-4 HELT4_23 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008932 0.00000049
4285 EU-NG-4 HELT4_23 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00072141 0.00000395
4286 EU-NG-4 HELT4_23 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000824 0.00000005
4287 EU-NG-4 HELT4_23 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00079012 0.00000433
4288 EU-NG-4 HELT4_23 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00996235 0.00005459
4289 EU-NG-4 HELT4_23 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00147718 0.00000809
4290 EU-NG-4 HELT4_23 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00092753 0.00000508
4291 EU-NG-4 HELT4_23 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00274824 0.00001506
4292 EU-NG-4 HELT4_23 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00326353 0.00001788
4293 EU-NG-4 HELT4_23 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00584 0.000032
4294 EU-NG-4 HELT4_23 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00216424 0.00001186
4295 EU-NG-4 HELT4_23 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01257318 0.00006889
4296 EU-NG-4 HELT4_23 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009344 0.0000512
4297 EU-NG-4 HELT4_23 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.09929412 0.00602353
4298 EU-NG-4 HELT4_23 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00056682 0.00000311
4299 EU-NG-4 HELT4_23 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003435 0.00000019
4300 EU-NG-4 HELT4_23 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.34356376 0.00188254
4301 EU-NG-4 HELT4_23 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
4302 EU-NG-4 HELT4_24 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006871 0.00000038
4303 EU-NG-4 HELT4_24 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00151153 0.00000828
4304 EU-NG-4 HELT4_24 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000412 0.00000002
4305 EU-NG-4 HELT4_24 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00037788 0.00000207
4306 EU-NG-4 HELT4_24 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00001924 0.00000011
4307 EU-NG-4 HELT4_24 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002886 0.00000016
4308 EU-NG-4 HELT4_24 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000292 0.0000016
4309 EU-NG-4 HELT4_24 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4310 EU-NG-4 HELT4_24 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013054 0.00000072
4311 EU-NG-4 HELT4_24 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008932 0.00000049
4312 EU-NG-4 HELT4_24 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00072141 0.00000395
4313 EU-NG-4 HELT4_24 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000824 0.00000005
4314 EU-NG-4 HELT4_24 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00079012 0.00000433
4315 EU-NG-4 HELT4_24 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00996235 0.00005459
4316 EU-NG-4 HELT4_24 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00147718 0.00000809
4317 EU-NG-4 HELT4_24 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00092753 0.00000508
4318 EU-NG-4 HELT4_24 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00274824 0.00001506
4319 EU-NG-4 HELT4_24 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00326353 0.00001788
4320 EU-NG-4 HELT4_24 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00584 0.000032
4321 EU-NG-4 HELT4_24 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00216424 0.00001186
4322 EU-NG-4 HELT4_24 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01257318 0.00006889
4323 EU-NG-4 HELT4_24 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009344 0.0000512
4324 EU-NG-4 HELT4_24 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.09929412 0.00602353
4325 EU-NG-4 HELT4_24 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00056682 0.00000311
4326 EU-NG-4 HELT4_24 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003435 0.00000019
4327 EU-NG-4 HELT4_24 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.34356376 0.00188254
4328 EU-NG-4 HELT4_24 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
4329 EU-NG-4 HEAL_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
4330 EU-NG-4 HEAL_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00226729 0.00001242
4331 EU-NG-4 HEAL_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000618 0.00000003
4332 EU-NG-4 HEAL_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00056682 0.00000311
4333 EU-NG-4 HEAL_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00002886 0.00000016
4334 EU-NG-4 HEAL_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004328 0.00000024
4335 EU-NG-4 HEAL_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.000438 0.0000024
4336 EU-NG-4 HEAL_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4337 EU-NG-4 HEAL_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00019581 0.00000107
4338 EU-NG-4 HEAL_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013398 0.00000073
4339 EU-NG-4 HEAL_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00108212 0.00000593
4340 EU-NG-4 HEAL_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001237 0.00000007
4341 EU-NG-4 HEAL_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00118518 0.00000649
4342 EU-NG-4 HEAL_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01494353 0.00008188
4343 EU-NG-4 HEAL_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00221576 0.00001214
4344 EU-NG-4 HEAL_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00139129 0.00000762
4345 EU-NG-4 HEAL_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00412235 0.00002259
4346 EU-NG-4 HEAL_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00489529 0.00002682
4347 EU-NG-4 HEAL_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00876 0.000048
4348 EU-NG-4 HEAL_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00324635 0.00001779
4349 EU-NG-4 HEAL_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01885976 0.00010334
4350 EU-NG-4 HEAL_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.014016 0.0000768
4351 EU-NG-4 HEAL_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.64894118 0.00903529
4352 EU-NG-4 HEAL_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085024 0.00000466
4353 EU-NG-4 HEAL_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
4354 EU-NG-4 HEAL_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.51534565 0.00282381
4355 EU-NG-4 HEAL_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00015459 0.00000085
4356 EU-NG-4 HEAL_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010735 0.00000059
4357 EU-NG-4 HEAL_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00236176 0.00001294
4358 EU-NG-4 HEAL_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000644 0.00000004
4359 EU-NG-4 HEAL_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00059044 0.00000324
4360 EU-NG-4 HEAL_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003006 0.00000016
4361 EU-NG-4 HEAL_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004509 0.00000025
4362 EU-NG-4 HEAL_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00045625 0.0000025
4363 EU-NG-4 HEAL_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00026838 0.00000147
4364 EU-NG-4 HEAL_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00020397 0.00000112
4365 EU-NG-4 HEAL_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00013956 0.00000076
4366 EU-NG-4 HEAL_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00112721 0.00000618
4367 EU-NG-4 HEAL_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001288 0.00000007
4368 EU-NG-4 HEAL_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00123456 0.00000676
4369 EU-NG-4 HEAL_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01556618 0.00008529
4370 EU-NG-4 HEAL_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00230809 0.00001265
4371 EU-NG-4 HEAL_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00144926 0.00000794
4372 EU-NG-4 HEAL_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00429412 0.00002353
4373 EU-NG-4 HEAL_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00509926 0.00002794
4374 EU-NG-4 HEAL_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009125 0.00005
4375 EU-NG-4 HEAL_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00338162 0.00001853
4376 EU-NG-4 HEAL_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01964559 0.00010765
4377 EU-NG-4 HEAL_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4378 EU-NG-4 HEAL_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.71764706 0.00941176
4379 EU-NG-4 HEAL_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00088566 0.00000485
4380 EU-NG-4 HEAL_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005368 0.00000029
4381 EU-NG-4 HEAL_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.53681838 0.00294147
4382 EU-NG-4 HEAL_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4383 EU-NG-4 HEAL_03 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00011336 0.00000062
4384 EU-NG-4 HEAL_03 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00249402 0.00001367
4385 EU-NG-4 HEAL_03 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000068 0.00000004
4386 EU-NG-4 HEAL_03 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00062351 0.00000342
4387 EU-NG-4 HEAL_03 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003174 0.00000017
4388 EU-NG-4 HEAL_03 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004761 0.00000026
4389 EU-NG-4 HEAL_03 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0004818 0.00000264
4390 EU-NG-4 HEAL_03 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00028341 0.00000155
4391 EU-NG-4 HEAL_03 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021539 0.00000118
4392 EU-NG-4 HEAL_03 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00014737 0.00000081
4393 EU-NG-4 HEAL_03 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00119033 0.00000652
4394 EU-NG-4 HEAL_03 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000136 0.00000007
4395 EU-NG-4 HEAL_03 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00130369 0.00000714
4396 EU-NG-4 HEAL_03 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01643788 0.00009007
4397 EU-NG-4 HEAL_03 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00243734 0.00001336
4398 EU-NG-4 HEAL_03 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00153042 0.00000839
4399 EU-NG-4 HEAL_03 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00453459 0.00002485
4400 EU-NG-4 HEAL_03 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00538482 0.00002951
4401 EU-NG-4 HEAL_03 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009636 0.0000528
4402 EU-NG-4 HEAL_03 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00357099 0.00001957
4403 EU-NG-4 HEAL_03 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074574 0.00011368
4404 EU-NG-4 HEAL_03 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0154176 0.00008448
4405 EU-NG-4 HEAL_03 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.81383529 0.00993882
4406 EU-NG-4 HEAL_03 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00093526 0.00000512
4407 EU-NG-4 HEAL_03 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005668 0.00000031
4408 EU-NG-4 HEAL_03 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.56688021 0.00310619
4409 EU-NG-4 HEAL_03 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017005 0.00000093
4410 EU-NG-4 HEAL_04 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00011336 0.00000062
4411 EU-NG-4 HEAL_04 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00249402 0.00001367
4412 EU-NG-4 HEAL_04 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000068 0.00000004
4413 EU-NG-4 HEAL_04 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00062351 0.00000342
4414 EU-NG-4 HEAL_04 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003174 0.00000017
4415 EU-NG-4 HEAL_04 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004761 0.00000026
4416 EU-NG-4 HEAL_04 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0004818 0.00000264
4417 EU-NG-4 HEAL_04 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00028341 0.00000155
4418 EU-NG-4 HEAL_04 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021539 0.00000118
4419 EU-NG-4 HEAL_04 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00014737 0.00000081
4420 EU-NG-4 HEAL_04 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00119033 0.00000652
4421 EU-NG-4 HEAL_04 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000136 0.00000007
4422 EU-NG-4 HEAL_04 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00130369 0.00000714
4423 EU-NG-4 HEAL_04 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01643788 0.00009007
4424 EU-NG-4 HEAL_04 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00243734 0.00001336
4425 EU-NG-4 HEAL_04 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00153042 0.00000839
4426 EU-NG-4 HEAL_04 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00453459 0.00002485
4427 EU-NG-4 HEAL_04 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00538482 0.00002951
4428 EU-NG-4 HEAL_04 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009636 0.0000528
4429 EU-NG-4 HEAL_04 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00357099 0.00001957
4430 EU-NG-4 HEAL_04 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074574 0.00011368
4431 EU-NG-4 HEAL_04 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0154176 0.00008448
4432 EU-NG-4 HEAL_04 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.81383529 0.00993882
4433 EU-NG-4 HEAL_04 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00093526 0.00000512
4434 EU-NG-4 HEAL_04 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005668 0.00000031
4435 EU-NG-4 HEAL_04 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.56688021 0.00310619
4436 EU-NG-4 HEAL_04 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017005 0.00000093
4437 EU-NG-4 HEAL_05 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00011336 0.00000062
4438 EU-NG-4 HEAL_05 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00249402 0.00001367
4439 EU-NG-4 HEAL_05 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000068 0.00000004
4440 EU-NG-4 HEAL_05 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00062351 0.00000342
4441 EU-NG-4 HEAL_05 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00003174 0.00000017
4442 EU-NG-4 HEAL_05 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004761 0.00000026
4443 EU-NG-4 HEAL_05 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0004818 0.00000264
4444 EU-NG-4 HEAL_05 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00028341 0.00000155
4445 EU-NG-4 HEAL_05 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021539 0.00000118
4446 EU-NG-4 HEAL_05 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00014737 0.00000081
4447 EU-NG-4 HEAL_05 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00119033 0.00000652
4448 EU-NG-4 HEAL_05 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000136 0.00000007
4449 EU-NG-4 HEAL_05 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00130369 0.00000714
4450 EU-NG-4 HEAL_05 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01643788 0.00009007
4451 EU-NG-4 HEAL_05 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00243734 0.00001336
4452 EU-NG-4 HEAL_05 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00153042 0.00000839
4453 EU-NG-4 HEAL_05 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00453459 0.00002485
4454 EU-NG-4 HEAL_05 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00538482 0.00002951
4455 EU-NG-4 HEAL_05 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.009636 0.0000528
4456 EU-NG-4 HEAL_05 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00357099 0.00001957
4457 EU-NG-4 HEAL_05 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074574 0.00011368
4458 EU-NG-4 HEAL_05 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0154176 0.00008448
4459 EU-NG-4 HEAL_05 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.81383529 0.00993882
4460 EU-NG-4 HEAL_05 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00093526 0.00000512
4461 EU-NG-4 HEAL_05 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005668 0.00000031
4462 EU-NG-4 HEAL_05 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.56688021 0.00310619
4463 EU-NG-4 HEAL_05 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017005 0.00000093
4464 EU-NG-4 HEAL_06 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00009447 0.00000052
4465 EU-NG-4 HEAL_06 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00207835 0.00001139
4466 EU-NG-4 HEAL_06 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000567 0.00000003
4467 EU-NG-4 HEAL_06 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051959 0.00000285
4468 EU-NG-4 HEAL_06 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00002645 0.00000014
4469 EU-NG-4 HEAL_06 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003968 0.00000022
4470 EU-NG-4 HEAL_06 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0004015 0.0000022
4471 EU-NG-4 HEAL_06 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00023618 0.00000129
4472 EU-NG-4 HEAL_06 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017949 0.00000098
4473 EU-NG-4 HEAL_06 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012281 0.00000067
4474 EU-NG-4 HEAL_06 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00099194 0.00000544
4475 EU-NG-4 HEAL_06 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001134 0.00000006
4476 EU-NG-4 HEAL_06 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00108641 0.00000595
4477 EU-NG-4 HEAL_06 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01369824 0.00007506
4478 EU-NG-4 HEAL_06 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00203112 0.00001113
4479 EU-NG-4 HEAL_06 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00127535 0.00000699
4480 EU-NG-4 HEAL_06 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4481 EU-NG-4 HEAL_06 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00448735 0.00002459
4482 EU-NG-4 HEAL_06 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00803 0.000044
4483 EU-NG-4 HEAL_06 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00297582 0.00001631
4484 EU-NG-4 HEAL_06 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01728812 0.00009473
4485 EU-NG-4 HEAL_06 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.012848 0.0000704
4486 EU-NG-4 HEAL_06 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.51152941 0.00828235
4487 EU-NG-4 HEAL_06 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00077938 0.00000427
4488 EU-NG-4 HEAL_06 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00004724 0.00000026
4489 EU-NG-4 HEAL_06 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.47240018 0.00258849
4490 EU-NG-4 HEAL_06 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00014171 0.00000078
4491 EU-NG-4 HERS2_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4492 EU-NG-4 HERS2_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4493 EU-NG-4 HERS2_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4494 EU-NG-4 HERS2_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4495 EU-NG-4 HERS2_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4496 EU-NG-4 HERS2_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4497 EU-NG-4 HERS2_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4498 EU-NG-4 HERS2_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4499 EU-NG-4 HERS2_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4500 EU-NG-4 HERS2_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4501 EU-NG-4 HERS2_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4502 EU-NG-4 HERS2_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4503 EU-NG-4 HERS2_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4504 EU-NG-4 HERS2_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4505 EU-NG-4 HERS2_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4506 EU-NG-4 HERS2_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4507 EU-NG-4 HERS2_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4508 EU-NG-4 HERS2_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4509 EU-NG-4 HERS2_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4510 EU-NG-4 HERS2_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4511 EU-NG-4 HERS2_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4512 EU-NG-4 HERS2_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4513 EU-NG-4 HERS2_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4514 EU-NG-4 HERS2_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4515 EU-NG-4 HERS2_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4516 EU-NG-4 HERS2_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4517 EU-NG-4 HERS2_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4518 EU-NG-4 HERS2_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4519 EU-NG-4 HERS2_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4520 EU-NG-4 HERS2_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4521 EU-NG-4 HERS2_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4522 EU-NG-4 HERS2_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4523 EU-NG-4 HERS2_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4524 EU-NG-4 HERS2_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4525 EU-NG-4 HERS2_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4526 EU-NG-4 HERS2_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4527 EU-NG-4 HERS2_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4528 EU-NG-4 HERS2_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4529 EU-NG-4 HERS2_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4530 EU-NG-4 HERS2_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4531 EU-NG-4 HERS2_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4532 EU-NG-4 HERS2_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4533 EU-NG-4 HERS2_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4534 EU-NG-4 HERS2_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4535 EU-NG-4 HERS2_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4536 EU-NG-4 HERS2_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4537 EU-NG-4 HERS2_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4538 EU-NG-4 HERS2_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4539 EU-NG-4 HERS2_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4540 EU-NG-4 HERS2_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4541 EU-NG-4 HERS2_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4542 EU-NG-4 HERS2_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4543 EU-NG-4 HERS2_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4544 EU-NG-4 HERS2_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4545 EU-NG-4 HERS2_03 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4546 EU-NG-4 HERS2_03 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4547 EU-NG-4 HERS2_03 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4548 EU-NG-4 HERS2_03 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4549 EU-NG-4 HERS2_03 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4550 EU-NG-4 HERS2_03 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4551 EU-NG-4 HERS2_03 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4552 EU-NG-4 HERS2_03 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4553 EU-NG-4 HERS2_03 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4554 EU-NG-4 HERS2_03 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4555 EU-NG-4 HERS2_03 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4556 EU-NG-4 HERS2_03 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4557 EU-NG-4 HERS2_03 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4558 EU-NG-4 HERS2_03 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4559 EU-NG-4 HERS2_03 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4560 EU-NG-4 HERS2_03 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4561 EU-NG-4 HERS2_03 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4562 EU-NG-4 HERS2_03 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4563 EU-NG-4 HERS2_03 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4564 EU-NG-4 HERS2_03 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4565 EU-NG-4 HERS2_03 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4566 EU-NG-4 HERS2_03 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4567 EU-NG-4 HERS2_03 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4568 EU-NG-4 HERS2_03 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4569 EU-NG-4 HERS2_03 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4570 EU-NG-4 HERS2_03 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4571 EU-NG-4 HERS2_03 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4572 EU-NG-4 HERS2_04 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4573 EU-NG-4 HERS2_04 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4574 EU-NG-4 HERS2_04 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4575 EU-NG-4 HERS2_04 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4576 EU-NG-4 HERS2_04 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4577 EU-NG-4 HERS2_04 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4578 EU-NG-4 HERS2_04 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4579 EU-NG-4 HERS2_04 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4580 EU-NG-4 HERS2_04 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4581 EU-NG-4 HERS2_04 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4582 EU-NG-4 HERS2_04 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4583 EU-NG-4 HERS2_04 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4584 EU-NG-4 HERS2_04 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4585 EU-NG-4 HERS2_04 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4586 EU-NG-4 HERS2_04 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4587 EU-NG-4 HERS2_04 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4588 EU-NG-4 HERS2_04 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4589 EU-NG-4 HERS2_04 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4590 EU-NG-4 HERS2_04 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4591 EU-NG-4 HERS2_04 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4592 EU-NG-4 HERS2_04 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4593 EU-NG-4 HERS2_04 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4594 EU-NG-4 HERS2_04 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4595 EU-NG-4 HERS2_04 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4596 EU-NG-4 HERS2_04 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4597 EU-NG-4 HERS2_04 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4598 EU-NG-4 HERS2_04 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4599 EU-NG-4 HERS2_05 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4600 EU-NG-4 HERS2_05 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4601 EU-NG-4 HERS2_05 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4602 EU-NG-4 HERS2_05 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4603 EU-NG-4 HERS2_05 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4604 EU-NG-4 HERS2_05 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4605 EU-NG-4 HERS2_05 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4606 EU-NG-4 HERS2_05 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4607 EU-NG-4 HERS2_05 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4608 EU-NG-4 HERS2_05 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4609 EU-NG-4 HERS2_05 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4610 EU-NG-4 HERS2_05 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4611 EU-NG-4 HERS2_05 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4612 EU-NG-4 HERS2_05 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4613 EU-NG-4 HERS2_05 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4614 EU-NG-4 HERS2_05 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4615 EU-NG-4 HERS2_05 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4616 EU-NG-4 HERS2_05 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4617 EU-NG-4 HERS2_05 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4618 EU-NG-4 HERS2_05 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4619 EU-NG-4 HERS2_05 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4620 EU-NG-4 HERS2_05 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4621 EU-NG-4 HERS2_05 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4622 EU-NG-4 HERS2_05 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4623 EU-NG-4 HERS2_05 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4624 EU-NG-4 HERS2_05 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4625 EU-NG-4 HERS2_05 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4626 EU-NG-4 HERS2_06 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4627 EU-NG-4 HERS2_06 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4628 EU-NG-4 HERS2_06 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4629 EU-NG-4 HERS2_06 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4630 EU-NG-4 HERS2_06 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4631 EU-NG-4 HERS2_06 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4632 EU-NG-4 HERS2_06 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4633 EU-NG-4 HERS2_06 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4634 EU-NG-4 HERS2_06 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4635 EU-NG-4 HERS2_06 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4636 EU-NG-4 HERS2_06 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4637 EU-NG-4 HERS2_06 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4638 EU-NG-4 HERS2_06 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4639 EU-NG-4 HERS2_06 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4640 EU-NG-4 HERS2_06 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4641 EU-NG-4 HERS2_06 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4642 EU-NG-4 HERS2_06 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4643 EU-NG-4 HERS2_06 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4644 EU-NG-4 HERS2_06 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4645 EU-NG-4 HERS2_06 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4646 EU-NG-4 HERS2_06 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4647 EU-NG-4 HERS2_06 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4648 EU-NG-4 HERS2_06 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4649 EU-NG-4 HERS2_06 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4650 EU-NG-4 HERS2_06 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4651 EU-NG-4 HERS2_06 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4652 EU-NG-4 HERS2_06 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4653 EU-NG-4 HERS2_07 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4654 EU-NG-4 HERS2_07 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4655 EU-NG-4 HERS2_07 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4656 EU-NG-4 HERS2_07 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4657 EU-NG-4 HERS2_07 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4658 EU-NG-4 HERS2_07 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4659 EU-NG-4 HERS2_07 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4660 EU-NG-4 HERS2_07 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4661 EU-NG-4 HERS2_07 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4662 EU-NG-4 HERS2_07 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4663 EU-NG-4 HERS2_07 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4664 EU-NG-4 HERS2_07 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4665 EU-NG-4 HERS2_07 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4666 EU-NG-4 HERS2_07 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4667 EU-NG-4 HERS2_07 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4668 EU-NG-4 HERS2_07 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4669 EU-NG-4 HERS2_07 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4670 EU-NG-4 HERS2_07 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4671 EU-NG-4 HERS2_07 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4672 EU-NG-4 HERS2_07 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4673 EU-NG-4 HERS2_07 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4674 EU-NG-4 HERS2_07 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4675 EU-NG-4 HERS2_07 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4676 EU-NG-4 HERS2_07 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4677 EU-NG-4 HERS2_07 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4678 EU-NG-4 HERS2_07 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4679 EU-NG-4 HERS2_07 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4680 EU-NG-4 HERS2_08 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4681 EU-NG-4 HERS2_08 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4682 EU-NG-4 HERS2_08 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4683 EU-NG-4 HERS2_08 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4684 EU-NG-4 HERS2_08 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4685 EU-NG-4 HERS2_08 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4686 EU-NG-4 HERS2_08 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4687 EU-NG-4 HERS2_08 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4688 EU-NG-4 HERS2_08 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4689 EU-NG-4 HERS2_08 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4690 EU-NG-4 HERS2_08 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4691 EU-NG-4 HERS2_08 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4692 EU-NG-4 HERS2_08 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4693 EU-NG-4 HERS2_08 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4694 EU-NG-4 HERS2_08 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4695 EU-NG-4 HERS2_08 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4696 EU-NG-4 HERS2_08 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4697 EU-NG-4 HERS2_08 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4698 EU-NG-4 HERS2_08 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4699 EU-NG-4 HERS2_08 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4700 EU-NG-4 HERS2_08 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4701 EU-NG-4 HERS2_08 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4702 EU-NG-4 HERS2_08 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4703 EU-NG-4 HERS2_08 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4704 EU-NG-4 HERS2_08 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4705 EU-NG-4 HERS2_08 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4706 EU-NG-4 HERS2_08 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4707 EU-NG-4 HERS2_09 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4708 EU-NG-4 HERS2_09 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4709 EU-NG-4 HERS2_09 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4710 EU-NG-4 HERS2_09 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4711 EU-NG-4 HERS2_09 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4712 EU-NG-4 HERS2_09 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4713 EU-NG-4 HERS2_09 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4714 EU-NG-4 HERS2_09 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4715 EU-NG-4 HERS2_09 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4716 EU-NG-4 HERS2_09 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4717 EU-NG-4 HERS2_09 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4718 EU-NG-4 HERS2_09 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4719 EU-NG-4 HERS2_09 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4720 EU-NG-4 HERS2_09 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4721 EU-NG-4 HERS2_09 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4722 EU-NG-4 HERS2_09 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4723 EU-NG-4 HERS2_09 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4724 EU-NG-4 HERS2_09 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4725 EU-NG-4 HERS2_09 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4726 EU-NG-4 HERS2_09 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4727 EU-NG-4 HERS2_09 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4728 EU-NG-4 HERS2_09 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4729 EU-NG-4 HERS2_09 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4730 EU-NG-4 HERS2_09 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4731 EU-NG-4 HERS2_09 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4732 EU-NG-4 HERS2_09 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4733 EU-NG-4 HERS2_09 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4734 EU-NG-4 HERS2_10 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4735 EU-NG-4 HERS2_10 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4736 EU-NG-4 HERS2_10 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4737 EU-NG-4 HERS2_10 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4738 EU-NG-4 HERS2_10 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4739 EU-NG-4 HERS2_10 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4740 EU-NG-4 HERS2_10 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4741 EU-NG-4 HERS2_10 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4742 EU-NG-4 HERS2_10 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4743 EU-NG-4 HERS2_10 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4744 EU-NG-4 HERS2_10 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4745 EU-NG-4 HERS2_10 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4746 EU-NG-4 HERS2_10 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4747 EU-NG-4 HERS2_10 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4748 EU-NG-4 HERS2_10 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4749 EU-NG-4 HERS2_10 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4750 EU-NG-4 HERS2_10 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4751 EU-NG-4 HERS2_10 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4752 EU-NG-4 HERS2_10 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4753 EU-NG-4 HERS2_10 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4754 EU-NG-4 HERS2_10 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4755 EU-NG-4 HERS2_10 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4756 EU-NG-4 HERS2_10 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4757 EU-NG-4 HERS2_10 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4758 EU-NG-4 HERS2_10 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4759 EU-NG-4 HERS2_10 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4760 EU-NG-4 HERS2_10 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4761 EU-NG-4 HERS2_11 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4762 EU-NG-4 HERS2_11 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4763 EU-NG-4 HERS2_11 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4764 EU-NG-4 HERS2_11 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4765 EU-NG-4 HERS2_11 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4766 EU-NG-4 HERS2_11 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4767 EU-NG-4 HERS2_11 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4768 EU-NG-4 HERS2_11 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4769 EU-NG-4 HERS2_11 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4770 EU-NG-4 HERS2_11 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4771 EU-NG-4 HERS2_11 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4772 EU-NG-4 HERS2_11 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4773 EU-NG-4 HERS2_11 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4774 EU-NG-4 HERS2_11 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4775 EU-NG-4 HERS2_11 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4776 EU-NG-4 HERS2_11 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4777 EU-NG-4 HERS2_11 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4778 EU-NG-4 HERS2_11 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4779 EU-NG-4 HERS2_11 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4780 EU-NG-4 HERS2_11 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4781 EU-NG-4 HERS2_11 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4782 EU-NG-4 HERS2_11 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4783 EU-NG-4 HERS2_11 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4784 EU-NG-4 HERS2_11 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4785 EU-NG-4 HERS2_11 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4786 EU-NG-4 HERS2_11 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4787 EU-NG-4 HERS2_11 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4788 EU-NG-4 HERS2_12 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4789 EU-NG-4 HERS2_12 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4790 EU-NG-4 HERS2_12 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4791 EU-NG-4 HERS2_12 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4792 EU-NG-4 HERS2_12 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4793 EU-NG-4 HERS2_12 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4794 EU-NG-4 HERS2_12 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4795 EU-NG-4 HERS2_12 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4796 EU-NG-4 HERS2_12 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4797 EU-NG-4 HERS2_12 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4798 EU-NG-4 HERS2_12 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4799 EU-NG-4 HERS2_12 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4800 EU-NG-4 HERS2_12 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4801 EU-NG-4 HERS2_12 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4802 EU-NG-4 HERS2_12 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4803 EU-NG-4 HERS2_12 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4804 EU-NG-4 HERS2_12 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4805 EU-NG-4 HERS2_12 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4806 EU-NG-4 HERS2_12 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4807 EU-NG-4 HERS2_12 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4808 EU-NG-4 HERS2_12 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4809 EU-NG-4 HERS2_12 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4810 EU-NG-4 HERS2_12 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4811 EU-NG-4 HERS2_12 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4812 EU-NG-4 HERS2_12 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4813 EU-NG-4 HERS2_12 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4814 EU-NG-4 HERS2_12 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4815 EU-NG-4 HERS2_13 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4816 EU-NG-4 HERS2_13 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4817 EU-NG-4 HERS2_13 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4818 EU-NG-4 HERS2_13 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4819 EU-NG-4 HERS2_13 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4820 EU-NG-4 HERS2_13 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4821 EU-NG-4 HERS2_13 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4822 EU-NG-4 HERS2_13 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4823 EU-NG-4 HERS2_13 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4824 EU-NG-4 HERS2_13 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4825 EU-NG-4 HERS2_13 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4826 EU-NG-4 HERS2_13 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4827 EU-NG-4 HERS2_13 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4828 EU-NG-4 HERS2_13 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4829 EU-NG-4 HERS2_13 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4830 EU-NG-4 HERS2_13 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4831 EU-NG-4 HERS2_13 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4832 EU-NG-4 HERS2_13 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4833 EU-NG-4 HERS2_13 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4834 EU-NG-4 HERS2_13 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4835 EU-NG-4 HERS2_13 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4836 EU-NG-4 HERS2_13 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4837 EU-NG-4 HERS2_13 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4838 EU-NG-4 HERS2_13 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4839 EU-NG-4 HERS2_13 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4840 EU-NG-4 HERS2_13 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4841 EU-NG-4 HERS2_13 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4842 EU-NG-4 HERS2_14 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4843 EU-NG-4 HERS2_14 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4844 EU-NG-4 HERS2_14 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4845 EU-NG-4 HERS2_14 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4846 EU-NG-4 HERS2_14 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4847 EU-NG-4 HERS2_14 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4848 EU-NG-4 HERS2_14 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4849 EU-NG-4 HERS2_14 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4850 EU-NG-4 HERS2_14 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4851 EU-NG-4 HERS2_14 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4852 EU-NG-4 HERS2_14 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4853 EU-NG-4 HERS2_14 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4854 EU-NG-4 HERS2_14 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4855 EU-NG-4 HERS2_14 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4856 EU-NG-4 HERS2_14 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4857 EU-NG-4 HERS2_14 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4858 EU-NG-4 HERS2_14 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4859 EU-NG-4 HERS2_14 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4860 EU-NG-4 HERS2_14 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4861 EU-NG-4 HERS2_14 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4862 EU-NG-4 HERS2_14 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4863 EU-NG-4 HERS2_14 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4864 EU-NG-4 HERS2_14 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4865 EU-NG-4 HERS2_14 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4866 EU-NG-4 HERS2_14 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4867 EU-NG-4 HERS2_14 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4868 EU-NG-4 HERS2_14 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4869 EU-NG-4 HERS2_15 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4870 EU-NG-4 HERS2_15 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4871 EU-NG-4 HERS2_15 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4872 EU-NG-4 HERS2_15 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4873 EU-NG-4 HERS2_15 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4874 EU-NG-4 HERS2_15 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4875 EU-NG-4 HERS2_15 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4876 EU-NG-4 HERS2_15 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4877 EU-NG-4 HERS2_15 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4878 EU-NG-4 HERS2_15 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4879 EU-NG-4 HERS2_15 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4880 EU-NG-4 HERS2_15 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4881 EU-NG-4 HERS2_15 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4882 EU-NG-4 HERS2_15 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4883 EU-NG-4 HERS2_15 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4884 EU-NG-4 HERS2_15 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4885 EU-NG-4 HERS2_15 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4886 EU-NG-4 HERS2_15 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4887 EU-NG-4 HERS2_15 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4888 EU-NG-4 HERS2_15 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4889 EU-NG-4 HERS2_15 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4890 EU-NG-4 HERS2_15 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4891 EU-NG-4 HERS2_15 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4892 EU-NG-4 HERS2_15 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4893 EU-NG-4 HERS2_15 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4894 EU-NG-4 HERS2_15 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4895 EU-NG-4 HERS2_15 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4896 EU-NG-4 HERS2_16 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00017176 0.00000094
4897 EU-NG-4 HERS2_16 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00377882 0.00002071
4898 EU-NG-4 HERS2_16 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001031 0.00000006
4899 EU-NG-4 HERS2_16 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094471 0.00000518
4900 EU-NG-4 HERS2_16 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00004809 0.00000026
4901 EU-NG-4 HERS2_16 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00007214 0.0000004
4902 EU-NG-4 HERS2_16 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00073 0.000004
4903 EU-NG-4 HERS2_16 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
4904 EU-NG-4 HERS2_16 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00032635 0.00000179
4905 EU-NG-4 HERS2_16 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00022329 0.00000122
4906 EU-NG-4 HERS2_16 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000988
4907 EU-NG-4 HERS2_16 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002061 0.00000011
4908 EU-NG-4 HERS2_16 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00197529 0.00001082
4909 EU-NG-4 HERS2_16 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02490588 0.00013647
4910 EU-NG-4 HERS2_16 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00369294 0.00002024
4911 EU-NG-4 HERS2_16 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00231882 0.00001271
4912 EU-NG-4 HERS2_16 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00687059 0.00003765
4913 EU-NG-4 HERS2_16 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00815882 0.00004471
4914 EU-NG-4 HERS2_16 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0146 0.00008
4915 EU-NG-4 HERS2_16 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00541059 0.00002965
4916 EU-NG-4 HERS2_16 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03143294 0.00017224
4917 EU-NG-4 HERS2_16 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02336 0.000128
4918 EU-NG-4 HERS2_16 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 2.74823529 0.01505882
4919 EU-NG-4 HERS2_16 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4920 EU-NG-4 HERS2_16 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008588 0.00000047
4921 EU-NG-4 HERS2_16 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.85890941 0.00470635
4922 EU-NG-4 HERS2_16 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4923 EU-NG-4 HERA1_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006441 0.00000035
4924 EU-NG-4 HERA1_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4925 EU-NG-4 HERA1_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000386 0.00000002
4926 EU-NG-4 HERA1_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00035426 0.00000194
4927 EU-NG-4 HERA1_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00001804 0.0000001
4928 EU-NG-4 HERA1_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002705 0.00000015
4929 EU-NG-4 HERA1_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00027375 0.0000015
4930 EU-NG-4 HERA1_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4931 EU-NG-4 HERA1_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012238 0.00000067
4932 EU-NG-4 HERA1_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008374 0.00000046
4933 EU-NG-4 HERA1_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00067632 0.00000371
4934 EU-NG-4 HERA1_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000773 0.00000004
4935 EU-NG-4 HERA1_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00074074 0.00000406
4936 EU-NG-4 HERA1_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00933971 0.00005118
4937 EU-NG-4 HERA1_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00138485 0.00000759
4938 EU-NG-4 HERA1_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00086956 0.00000476
4939 EU-NG-4 HERA1_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257647 0.00001412
4940 EU-NG-4 HERA1_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00305956 0.00001676
4941 EU-NG-4 HERA1_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.005475 0.00003
4942 EU-NG-4 HERA1_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00202897 0.00001112
4943 EU-NG-4 HERA1_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01178735 0.00006459
4944 EU-NG-4 HERA1_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00876 0.000048
4945 EU-NG-4 HERA1_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.03058824 0.00564706
4946 EU-NG-4 HERA1_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0005314 0.00000291
4947 EU-NG-4 HERA1_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003221 0.00000018
4948 EU-NG-4 HERA1_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.32209103 0.00176488
4949 EU-NG-4 HERA1_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00009662 0.00000053
4950 EU-NG-4 HERA1_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006441 0.00000035
4951 EU-NG-4 HERA1_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4952 EU-NG-4 HERA1_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000386 0.00000002
4953 EU-NG-4 HERA1_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00035426 0.00000194
4954 EU-NG-4 HERA1_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00001804 0.0000001
4955 EU-NG-4 HERA1_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00002705 0.00000015
4956 EU-NG-4 HERA1_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00027375 0.0000015
4957 EU-NG-4 HERA1_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00016103 0.00000088
4958 EU-NG-4 HERA1_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012238 0.00000067
4959 EU-NG-4 HERA1_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00008374 0.00000046
4960 EU-NG-4 HERA1_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00067632 0.00000371
4961 EU-NG-4 HERA1_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00000773 0.00000004
4962 EU-NG-4 HERA1_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00074074 0.00000406
4963 EU-NG-4 HERA1_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00933971 0.00005118
4964 EU-NG-4 HERA1_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00138485 0.00000759
4965 EU-NG-4 HERA1_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00086956 0.00000476
4966 EU-NG-4 HERA1_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257647 0.00001412
4967 EU-NG-4 HERA1_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00305956 0.00001676
4968 EU-NG-4 HERA1_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.005475 0.00003
4969 EU-NG-4 HERA1_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00202897 0.00001112
4970 EU-NG-4 HERA1_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01178735 0.00006459
4971 EU-NG-4 HERA1_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00876 0.000048
4972 EU-NG-4 HERA1_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.03058824 0.00564706
4973 EU-NG-4 HERA1_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0005314 0.00000291
4974 EU-NG-4 HERA1_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003221 0.00000018
4975 EU-NG-4 HERA1_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.32209103 0.00176488
4976 EU-NG-4 HERA1_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00009662 0.00000053
4977 EU-NG-4 HEC4_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
4978 EU-NG-4 HEC4_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00003106
4979 EU-NG-4 HEC4_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001546 0.00000008
4980 EU-NG-4 HEC4_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
4981 EU-NG-4 HEC4_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00007214 0.0000004
4982 EU-NG-4 HEC4_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.00000059
4983 EU-NG-4 HEC4_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.000006
4984 EU-NG-4 HEC4_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00064412 0.00000353
4985 EU-NG-4 HEC4_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00048953 0.00000268
4986 EU-NG-4 HEC4_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00033494 0.00000184
4987 EU-NG-4 HEC4_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00001482
4988 EU-NG-4 HEC4_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003092 0.00000017
4989 EU-NG-4 HEC4_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00296294 0.00001624
4990 EU-NG-4 HEC4_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03735882 0.00020471
4991 EU-NG-4 HEC4_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00553941 0.00003035
4992 EU-NG-4 HEC4_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00347824 0.00001906
4993 EU-NG-4 HEC4_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01030588 0.00005647
4994 EU-NG-4 HEC4_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01223824 0.00006706
4995 EU-NG-4 HEC4_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0219 0.00012
4996 EU-NG-4 HEC4_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00811588 0.00004447
4997 EU-NG-4 HEC4_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04714941 0.00025835
4998 EU-NG-4 HEC4_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03504 0.000192
4999 EU-NG-4 HEC4_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.12235294 0.02258824
5000 EU-NG-4 HEC4_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00212559 0.00001165
5001 EU-NG-4 HEC4_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012882 0.00000071
5002 EU-NG-4 HEC4_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.28836412 0.00705953
5003 EU-NG-4 HEC4_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00038647 0.00000212
5004 EU-NG-4 HEPB1_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
5005 EU-NG-4 HEPB1_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00003106
5006 EU-NG-4 HEPB1_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001546 0.00000008
5007 EU-NG-4 HEPB1_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
5008 EU-NG-4 HEPB1_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00007214 0.0000004
5009 EU-NG-4 HEPB1_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.00000059
5010 EU-NG-4 HEPB1_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.000006
5011 EU-NG-4 HEPB1_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00064412 0.00000353
5012 EU-NG-4 HEPB1_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00048953 0.00000268
5013 EU-NG-4 HEPB1_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00033494 0.00000184
5014 EU-NG-4 HEPB1_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00001482
5015 EU-NG-4 HEPB1_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003092 0.00000017
5016 EU-NG-4 HEPB1_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00296294 0.00001624
5017 EU-NG-4 HEPB1_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03735882 0.00020471
5018 EU-NG-4 HEPB1_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00553941 0.00003035
5019 EU-NG-4 HEPB1_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00347824 0.00001906
5020 EU-NG-4 HEPB1_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01030588 0.00005647
5021 EU-NG-4 HEPB1_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01223824 0.00006706
5022 EU-NG-4 HEPB1_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0219 0.00012
5023 EU-NG-4 HEPB1_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00811588 0.00004447
5024 EU-NG-4 HEPB1_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04714941 0.00025835
5025 EU-NG-4 HEPB1_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03504 0.000192
5026 EU-NG-4 HEPB1_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.12235294 0.02258824
5027 EU-NG-4 HEPB1_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00212559 0.00001165
5028 EU-NG-4 HEPB1_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012882 0.00000071
5029 EU-NG-4 HEPB1_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.28836412 0.00705953
5030 EU-NG-4 HEPB1_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00038647 0.00000212
5031 EU-NG-4 HEC5_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025765 0.00000141
5032 EU-NG-4 HEC5_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00003106
5033 EU-NG-4 HEC5_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00001546 0.00000008
5034 EU-NG-4 HEC5_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141706 0.00000776
5035 EU-NG-4 HEC5_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00007214 0.0000004
5036 EU-NG-4 HEC5_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.00000059
5037 EU-NG-4 HEC5_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.001095 0.000006
5038 EU-NG-4 HEC5_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00064412 0.00000353
5039 EU-NG-4 HEC5_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00048953 0.00000268
5040 EU-NG-4 HEC5_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00033494 0.00000184
5041 EU-NG-4 HEC5_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00001482
5042 EU-NG-4 HEC5_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00003092 0.00000017
5043 EU-NG-4 HEC5_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00296294 0.00001624
5044 EU-NG-4 HEC5_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03735882 0.00020471
5045 EU-NG-4 HEC5_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00553941 0.00003035
5046 EU-NG-4 HEC5_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00347824 0.00001906
5047 EU-NG-4 HEC5_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01030588 0.00005647
5048 EU-NG-4 HEC5_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01223824 0.00006706
5049 EU-NG-4 HEC5_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0219 0.00012
5050 EU-NG-4 HEC5_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00811588 0.00004447
5051 EU-NG-4 HEC5_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04714941 0.00025835
5052 EU-NG-4 HEC5_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03504 0.000192
5053 EU-NG-4 HEC5_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.12235294 0.02258824
5054 EU-NG-4 HEC5_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00212559 0.00001165
5055 EU-NG-4 HEC5_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012882 0.00000071
5056 EU-NG-4 HEC5_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 1.28836412 0.00705953
5057 EU-NG-4 HEC5_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00038647 0.00000212
5058 EU-NG-4 HERA5_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00061835 0.00000339
5059 EU-NG-4 HERA5_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01360376 0.00007454
5060 EU-NG-4 HERA5_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000371 0.0000002
5061 EU-NG-4 HERA5_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00340094 0.00001864
5062 EU-NG-4 HERA5_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00017314 0.00000095
5063 EU-NG-4 HERA5_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025971 0.00000142
5064 EU-NG-4 HERA5_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.002628 0.0000144
5065 EU-NG-4 HERA5_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154588 0.00000847
5066 EU-NG-4 HERA5_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00117487 0.00000644
5067 EU-NG-4 HERA5_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00080386 0.0000044
5068 EU-NG-4 HERA5_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00649271 0.00003558
5069 EU-NG-4 HERA5_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000742 0.00000041
5070 EU-NG-4 HERA5_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00711106 0.00003896
5071 EU-NG-4 HERA5_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08966118 0.00049129
5072 EU-NG-4 HERA5_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01329459 0.00007285
5073 EU-NG-4 HERA5_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00834776 0.00004574
5074 EU-NG-4 HERA5_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02473412 0.00013553
5075 EU-NG-4 HERA5_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02937176 0.00016094
5076 EU-NG-4 HERA5_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05256 0.000288
5077 EU-NG-4 HERA5_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01947812 0.00010673
5078 EU-NG-4 HERA5_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11315859 0.00062005
5079 EU-NG-4 HERA5_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.084096 0.0004608
5080 EU-NG-4 HERA5_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.89364706 0.05421176
5081 EU-NG-4 HERA5_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00510141 0.00002795
5082 EU-NG-4 HERA5_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00030918 0.00000169
5083 EU-NG-4 HERA5_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 3.09207388 0.01694287
5084 EU-NG-4 HERA5_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00092753 0.00000508
5085 EU-NG-4 HERA5_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085882 0.00000471
5086 EU-NG-4 HERA5_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00010353
5087 EU-NG-4 HERA5_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
5088 EU-NG-4 HERA5_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00472353 0.00002588
5089 EU-NG-4 HERA5_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00024047 0.00000132
5090 EU-NG-4 HERA5_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00036071 0.00000198
5091 EU-NG-4 HERA5_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00365 0.00002
5092 EU-NG-4 HERA5_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00214706 0.00001176
5093 EU-NG-4 HERA5_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00163176 0.00000894
5094 EU-NG-4 HERA5_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00111647 0.00000612
5095 EU-NG-4 HERA5_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00901765 0.00004941
5096 EU-NG-4 HERA5_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
5097 EU-NG-4 HERA5_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00987647 0.00005412
5098 EU-NG-4 HERA5_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.12452941 0.00068235
5099 EU-NG-4 HERA5_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01846471 0.00010118
5100 EU-NG-4 HERA5_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01159412 0.00006353
5101 EU-NG-4 HERA5_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00018824
5102 EU-NG-4 HERA5_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04079412 0.00022353
5103 EU-NG-4 HERA5_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.073 0.0004
5104 EU-NG-4 HERA5_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02705294 0.00014824
5105 EU-NG-4 HERA5_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15716471 0.00086118
5106 EU-NG-4 HERA5_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1168 0.00064
5107 EU-NG-4 HERA5_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 13.74117647 0.07529412
5108 EU-NG-4 HERA5_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00708529 0.00003882
5109 EU-NG-4 HERA5_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
5110 EU-NG-4 HERA5_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.29454706 0.02353176
5111 EU-NG-4 HERA5_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00128824 0.00000706
5112 EU-NG-4 HERA5_03 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085882 0.00000471
5113 EU-NG-4 HERA5_03 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00010353
5114 EU-NG-4 HERA5_03 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
5115 EU-NG-4 HERA5_03 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00472353 0.00002588
5116 EU-NG-4 HERA5_03 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00024047 0.00000132
5117 EU-NG-4 HERA5_03 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00036071 0.00000198
5118 EU-NG-4 HERA5_03 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00365 0.00002
5119 EU-NG-4 HERA5_03 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00214706 0.00001176
5120 EU-NG-4 HERA5_03 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00163176 0.00000894
5121 EU-NG-4 HERA5_03 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00111647 0.00000612
5122 EU-NG-4 HERA5_03 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00901765 0.00004941
5123 EU-NG-4 HERA5_03 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
5124 EU-NG-4 HERA5_03 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00987647 0.00005412
5125 EU-NG-4 HERA5_03 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.12452941 0.00068235
5126 EU-NG-4 HERA5_03 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01846471 0.00010118
5127 EU-NG-4 HERA5_03 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01159412 0.00006353
5128 EU-NG-4 HERA5_03 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00018824
5129 EU-NG-4 HERA5_03 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04079412 0.00022353
5130 EU-NG-4 HERA5_03 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.073 0.0004
5131 EU-NG-4 HERA5_03 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02705294 0.00014824
5132 EU-NG-4 HERA5_03 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15716471 0.00086118
5133 EU-NG-4 HERA5_03 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1168 0.00064
5134 EU-NG-4 HERA5_03 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 13.74117647 0.07529412
5135 EU-NG-4 HERA5_03 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00708529 0.00003882
5136 EU-NG-4 HERA5_03 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
5137 EU-NG-4 HERA5_03 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.29454706 0.02353176
5138 EU-NG-4 HERA5_03 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00128824 0.00000706
5139 EU-NG-4 HERA6_01 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00061835 0.00000339
5140 EU-NG-4 HERA6_01 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01360376 0.00007454
5141 EU-NG-4 HERA6_01 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000371 0.0000002
5142 EU-NG-4 HERA6_01 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00340094 0.00001864
5143 EU-NG-4 HERA6_01 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00017314 0.00000095
5144 EU-NG-4 HERA6_01 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00025971 0.00000142
5145 EU-NG-4 HERA6_01 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.002628 0.0000144
5146 EU-NG-4 HERA6_01 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154588 0.00000847
5147 EU-NG-4 HERA6_01 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00117487 0.00000644
5148 EU-NG-4 HERA6_01 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00080386 0.0000044
5149 EU-NG-4 HERA6_01 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00649271 0.00003558
5150 EU-NG-4 HERA6_01 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0000742 0.00000041
5151 EU-NG-4 HERA6_01 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00711106 0.00003896
5152 EU-NG-4 HERA6_01 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08966118 0.00049129
5153 EU-NG-4 HERA6_01 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01329459 0.00007285
5154 EU-NG-4 HERA6_01 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00834776 0.00004574
5155 EU-NG-4 HERA6_01 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02473412 0.00013553
5156 EU-NG-4 HERA6_01 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02937176 0.00016094
5157 EU-NG-4 HERA6_01 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05256 0.000288
5158 EU-NG-4 HERA6_01 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01947812 0.00010673
5159 EU-NG-4 HERA6_01 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.11315859 0.00062005
5160 EU-NG-4 HERA6_01 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.084096 0.0004608
5161 EU-NG-4 HERA6_01 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.89364706 0.05421176
5162 EU-NG-4 HERA6_01 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00510141 0.00002795
5163 EU-NG-4 HERA6_01 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00030918 0.00000169
5164 EU-NG-4 HERA6_01 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 3.09207388 0.01694287
5165 EU-NG-4 HERA6_01 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00092753 0.00000508
5166 EU-NG-4 HERA6_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085882 0.00000471
5167 EU-NG-4 HERA6_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00010353
5168 EU-NG-4 HERA6_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
5169 EU-NG-4 HERA6_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00472353 0.00002588
5170 EU-NG-4 HERA6_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00024047 0.00000132
5171 EU-NG-4 HERA6_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00036071 0.00000198
5172 EU-NG-4 HERA6_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00365 0.00002
5173 EU-NG-4 HERA6_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00214706 0.00001176
5174 EU-NG-4 HERA6_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00163176 0.00000894
5175 EU-NG-4 HERA6_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00111647 0.00000612
5176 EU-NG-4 HERA6_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00901765 0.00004941
5177 EU-NG-4 HERA6_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
5178 EU-NG-4 HERA6_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00987647 0.00005412
5179 EU-NG-4 HERA6_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.12452941 0.00068235
5180 EU-NG-4 HERA6_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01846471 0.00010118
5181 EU-NG-4 HERA6_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01159412 0.00006353
5182 EU-NG-4 HERA6_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00018824
5183 EU-NG-4 HERA6_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04079412 0.00022353
5184 EU-NG-4 HERA6_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.073 0.0004
5185 EU-NG-4 HERA6_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02705294 0.00014824
5186 EU-NG-4 HERA6_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15716471 0.00086118
5187 EU-NG-4 HERA6_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1168 0.00064
5188 EU-NG-4 HERA6_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 13.74117647 0.07529412
5189 EU-NG-4 HERA6_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00708529 0.00003882
5190 EU-NG-4 HERA6_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
5191 EU-NG-4 HERA6_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.29454706 0.02353176
5192 EU-NG-4 HERA6_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00128824 0.00000706
5193 EU-NG-4 HERA6_03 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00085882 0.00000471
5194 EU-NG-4 HERA6_03 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01889412 0.00010353
5195 EU-NG-4 HERA6_03 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005153 0.00000028
5196 EU-NG-4 HERA6_03 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00472353 0.00002588
5197 EU-NG-4 HERA6_03 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00024047 0.00000132
5198 EU-NG-4 HERA6_03 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00036071 0.00000198
5199 EU-NG-4 HERA6_03 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00365 0.00002
5200 EU-NG-4 HERA6_03 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00214706 0.00001176
5201 EU-NG-4 HERA6_03 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00163176 0.00000894
5202 EU-NG-4 HERA6_03 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00111647 0.00000612
5203 EU-NG-4 HERA6_03 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00901765 0.00004941
5204 EU-NG-4 HERA6_03 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010306 0.00000056
5205 EU-NG-4 HERA6_03 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00987647 0.00005412
5206 EU-NG-4 HERA6_03 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.12452941 0.00068235
5207 EU-NG-4 HERA6_03 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01846471 0.00010118
5208 EU-NG-4 HERA6_03 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01159412 0.00006353
5209 EU-NG-4 HERA6_03 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03435294 0.00018824
5210 EU-NG-4 HERA6_03 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04079412 0.00022353
5211 EU-NG-4 HERA6_03 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.073 0.0004
5212 EU-NG-4 HERA6_03 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02705294 0.00014824
5213 EU-NG-4 HERA6_03 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.15716471 0.00086118
5214 EU-NG-4 HERA6_03 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1168 0.00064
5215 EU-NG-4 HERA6_03 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 13.74117647 0.07529412
5216 EU-NG-4 HERA6_03 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00708529 0.00003882
5217 EU-NG-4 HERA6_03 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00042941 0.00000235
5218 EU-NG-4 HERA6_03 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.29454706 0.02353176
5219 EU-NG-4 HERA6_03 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00128824 0.00000706
5220 EU-NG-4 HEPB1_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103059 0.00000565
5221 EU-NG-4 HEPB1_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02267294 0.00012424
5222 EU-NG-4 HEPB1_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006184 0.00000034
5223 EU-NG-4 HEPB1_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00003106
5224 EU-NG-4 HEPB1_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028856 0.00000158
5225 EU-NG-4 HEPB1_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043285 0.00000237
5226 EU-NG-4 HEPB1_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00438 0.000024
5227 EU-NG-4 HEPB1_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257647 0.00001412
5228 EU-NG-4 HEPB1_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195812 0.00001073
5229 EU-NG-4 HEPB1_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133976 0.00000734
5230 EU-NG-4 HEPB1_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01082118 0.00005929
5231 EU-NG-4 HEPB1_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012367 0.00000068
5232 EU-NG-4 HEPB1_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01185176 0.00006494
5233 EU-NG-4 HEPB1_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14943529 0.00081882
5234 EU-NG-4 HEPB1_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02215765 0.00012141
5235 EU-NG-4 HEPB1_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01391294 0.00007624
5236 EU-NG-4 HEPB1_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04122353 0.00022588
5237 EU-NG-4 HEPB1_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04895294 0.00026824
5238 EU-NG-4 HEPB1_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0876 0.00048
5239 EU-NG-4 HEPB1_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03246353 0.00017788
5240 EU-NG-4 HEPB1_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18859765 0.00103341
5241 EU-NG-4 HEPB1_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14016 0.000768
5242 EU-NG-4 HEPB1_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48941176 0.09035294
5243 EU-NG-4 HEPB1_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00850235 0.00004659
5244 EU-NG-4 HEPB1_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000282
5245 EU-NG-4 HEPB1_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15345647 0.02823812
5246 EU-NG-4 HEPB1_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154588 0.00000847
5247 EU-NG-4 HEC5_02 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00103059 0.00000565
5248 EU-NG-4 HEC5_02 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02267294 0.00012424
5249 EU-NG-4 HEC5_02 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00006184 0.00000034
5250 EU-NG-4 HEC5_02 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00566824 0.00003106
5251 EU-NG-4 HEC5_02 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00028856 0.00000158
5252 EU-NG-4 HEC5_02 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00043285 0.00000237
5253 EU-NG-4 HEC5_02 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00438 0.000024
5254 EU-NG-4 HEC5_02 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00257647 0.00001412
5255 EU-NG-4 HEC5_02 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00195812 0.00001073
5256 EU-NG-4 HEC5_02 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00133976 0.00000734
5257 EU-NG-4 HEC5_02 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01082118 0.00005929
5258 EU-NG-4 HEC5_02 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00012367 0.00000068
5259 EU-NG-4 HEC5_02 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01185176 0.00006494
5260 EU-NG-4 HEC5_02 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14943529 0.00081882
5261 EU-NG-4 HEC5_02 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02215765 0.00012141
5262 EU-NG-4 HEC5_02 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01391294 0.00007624
5263 EU-NG-4 HEC5_02 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04122353 0.00022588
5264 EU-NG-4 HEC5_02 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04895294 0.00026824
5265 EU-NG-4 HEC5_02 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0876 0.00048
5266 EU-NG-4 HEC5_02 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03246353 0.00017788
5267 EU-NG-4 HEC5_02 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.18859765 0.00103341
5268 EU-NG-4 HEC5_02 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.14016 0.000768
5269 EU-NG-4 HEC5_02 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 16.48941176 0.09035294
5270 EU-NG-4 HEC5_02 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00850235 0.00004659
5271 EU-NG-4 HEC5_02 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00051529 0.00000282
5272 EU-NG-4 HEC5_02 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 5.15345647 0.02823812
5273 EU-NG-4 HEC5_02 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00154588 0.00000847
5274 EU-NG-4 HEAL_07 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094041 0.00000515
5275 EU-NG-4 HEAL_07 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02068906 0.00011336
5276 EU-NG-4 HEAL_07 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005642 0.00000031
5277 EU-NG-4 HEAL_07 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00517226 0.00002834
5278 EU-NG-4 HEAL_07 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00026332 0.00000144
5279 EU-NG-4 HEAL_07 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00039497 0.00000216
5280 EU-NG-4 HEAL_07 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00399675 0.0000219
5281 EU-NG-4 HEAL_07 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00235103 0.00001288
5282 EU-NG-4 HEAL_07 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00178678 0.00000979
5283 EU-NG-4 HEAL_07 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00122254 0.0000067
5284 EU-NG-4 HEAL_07 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00987432 0.00005411
5285 EU-NG-4 HEAL_07 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00011285 0.00000062
5286 EU-NG-4 HEAL_07 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01081474 0.00005926
5287 EU-NG-4 HEAL_07 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13635971 0.00074718
5288 EU-NG-4 HEAL_07 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02021885 0.00011079
5289 EU-NG-4 HEAL_07 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01269556 0.00006956
5290 EU-NG-4 HEAL_07 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03761647 0.00020612
5291 EU-NG-4 HEAL_07 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04466956 0.00024476
5292 EU-NG-4 HEAL_07 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.079935 0.000438
5293 EU-NG-4 HEAL_07 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02962297 0.00016232
5294 EU-NG-4 HEAL_07 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.17209535 0.00094299
5295 EU-NG-4 HEAL_07 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.127896 0.0007008
5296 EU-NG-4 HEAL_07 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 15.04658824 0.08244706
5297 EU-NG-4 HEAL_07 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0077584 0.00004251
5298 EU-NG-4 HEAL_07 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00047021 0.00000258
5299 EU-NG-4 HEAL_07 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.70252903 0.02576728
5300 EU-NG-4 HEAL_07 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141062 0.00000773
5301 EU-NG-4 HEAL_08 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00094041 0.00000515
5302 EU-NG-4 HEAL_08 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02068906 0.00011336
5303 EU-NG-4 HEAL_08 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00005642 0.00000031
5304 EU-NG-4 HEAL_08 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00517226 0.00002834
5305 EU-NG-4 HEAL_08 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00026332 0.00000144
5306 EU-NG-4 HEAL_08 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00039497 0.00000216
5307 EU-NG-4 HEAL_08 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00399675 0.0000219
5308 EU-NG-4 HEAL_08 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00235103 0.00001288
5309 EU-NG-4 HEAL_08 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00178678 0.00000979
5310 EU-NG-4 HEAL_08 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00122254 0.0000067
5311 EU-NG-4 HEAL_08 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00987432 0.00005411
5312 EU-NG-4 HEAL_08 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00011285 0.00000062
5313 EU-NG-4 HEAL_08 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01081474 0.00005926
5314 EU-NG-4 HEAL_08 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.13635971 0.00074718
5315 EU-NG-4 HEAL_08 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02021885 0.00011079
5316 EU-NG-4 HEAL_08 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01269556 0.00006956
5317 EU-NG-4 HEAL_08 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03761647 0.00020612
5318 EU-NG-4 HEAL_08 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.04466956 0.00024476
5319 EU-NG-4 HEAL_08 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.079935 0.000438
5320 EU-NG-4 HEAL_08 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02962297 0.00016232
5321 EU-NG-4 HEAL_08 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.17209535 0.00094299
5322 EU-NG-4 HEAL_08 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.127896 0.0007008
5323 EU-NG-4 HEAL_08 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 15.04658824 0.08244706
5324 EU-NG-4 HEAL_08 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.0077584 0.00004251
5325 EU-NG-4 HEAL_08 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00047021 0.00000258
5326 EU-NG-4 HEAL_08 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 4.70252903 0.02576728
5327 EU-NG-4 HEAL_08 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00141062 0.00000773
5328 EU-NG-5 CUB3 - OX293-0-70 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000494
5329 EU-NG-5 CUB3 - OX293-0-70 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03967765 0.00010871
5330 EU-NG-5 CUB3 - OX293-0-70 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.0000003
5331 EU-NG-5 CUB3 - OX293-0-70 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00991941 0.00002718
5332 EU-NG-5 CUB3 - OX293-0-70 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00050499 0.00000138
5333 EU-NG-5 CUB3 - OX293-0-70 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075748 0.00000208
5334 EU-NG-5 CUB3 - OX293-0-70 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000021
5335 EU-NG-5 CUB3 - OX293-0-70 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00001235
5336 EU-NG-5 CUB3 - OX293-0-70 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00342671 0.00000939
5337 EU-NG-5 CUB3 - OX293-0-70 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00234459 0.00000642
5338 EU-NG-5 CUB3 - OX293-0-70 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01893706 0.00005188
5339 EU-NG-5 CUB3 - OX293-0-70 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021642 0.00000059
5340 EU-NG-5 CUB3 - OX293-0-70 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074059 0.00005682
5341 EU-NG-5 CUB3 - OX293-0-70 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.26151176 0.00071647
5342 EU-NG-5 CUB3 - OX293-0-70 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03877588 0.00010624
5343 EU-NG-5 CUB3 - OX293-0-70 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02434765 0.00006671
5344 EU-NG-5 CUB3 - OX293-0-70 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07214118 0.00019765
5345 EU-NG-5 CUB3 - OX293-0-70 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08566765 0.00023471
5346 EU-NG-5 CUB3 - OX293-0-70 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1533 0.00042
5347 EU-NG-5 CUB3 - OX293-0-70 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05681118 0.00015565
5348 EU-NG-5 CUB3 - OX293-0-70 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.33004588 0.00090424
5349 EU-NG-5 CUB3 - OX293-0-70 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24528 0.000672
5350 EU-NG-5 CUB3 - OX293-0-70 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 28.85647059 0.07905882
5351 EU-NG-5 CUB3 - OX293-0-70 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01487912 0.00004076
5352 EU-NG-5 CUB3 - OX293-0-70 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090176 0.00000247
5353 EU-NG-5 CUB3 - OX293-0-70 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.01854882 0.02470835
5354 EU-NG-5 CUB3 - OX293-0-70 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00000741
5355 EU-NG-5 PUB1A-OX293-0-70 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000494
5356 EU-NG-5 PUB1A-OX293-0-70 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03967765 0.00010871
5357 EU-NG-5 PUB1A-OX293-0-70 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.0000003
5358 EU-NG-5 PUB1A-OX293-0-70 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00991941 0.00002718
5359 EU-NG-5 PUB1A-OX293-0-70 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00050499 0.00000138
5360 EU-NG-5 PUB1A-OX293-0-70 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075748 0.00000208
5361 EU-NG-5 PUB1A-OX293-0-70 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000021
5362 EU-NG-5 PUB1A-OX293-0-70 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00001235
5363 EU-NG-5 PUB1A-OX293-0-70 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00342671 0.00000939
5364 EU-NG-5 PUB1A-OX293-0-70 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00234459 0.00000642
5365 EU-NG-5 PUB1A-OX293-0-70 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01893706 0.00005188
5366 EU-NG-5 PUB1A-OX293-0-70 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021642 0.00000059
5367 EU-NG-5 PUB1A-OX293-0-70 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074059 0.00005682
5368 EU-NG-5 PUB1A-OX293-0-70 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.26151176 0.00071647
5369 EU-NG-5 PUB1A-OX293-0-70 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03877588 0.00010624
5370 EU-NG-5 PUB1A-OX293-0-70 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02434765 0.00006671
5371 EU-NG-5 PUB1A-OX293-0-70 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07214118 0.00019765
5372 EU-NG-5 PUB1A-OX293-0-70 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08566765 0.00023471
5373 EU-NG-5 PUB1A-OX293-0-70 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1533 0.00042
5374 EU-NG-5 PUB1A-OX293-0-70 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05681118 0.00015565
5375 EU-NG-5 PUB1A-OX293-0-70 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.33004588 0.00090424
5376 EU-NG-5 PUB1A-OX293-0-70 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24528 0.000672
5377 EU-NG-5 PUB1A-OX293-0-70 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 28.85647059 0.07905882
5378 EU-NG-5 PUB1A-OX293-0-70 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01487912 0.00004076
5379 EU-NG-5 PUB1A-OX293-0-70 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090176 0.00000247
5380 EU-NG-5 PUB1A-OX293-0-70 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.01854882 0.02470835
5381 EU-NG-5 PUB1A-OX293-0-70 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00000741
5382 EU-NG-5 PUB1B-OX293-0-70 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000494
5383 EU-NG-5 PUB1B-OX293-0-70 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03967765 0.00010871
5384 EU-NG-5 PUB1B-OX293-0-70 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.0000003
5385 EU-NG-5 PUB1B-OX293-0-70 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00991941 0.00002718
5386 EU-NG-5 PUB1B-OX293-0-70 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00050499 0.00000138
5387 EU-NG-5 PUB1B-OX293-0-70 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075748 0.00000208
5388 EU-NG-5 PUB1B-OX293-0-70 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000021
5389 EU-NG-5 PUB1B-OX293-0-70 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00001235
5390 EU-NG-5 PUB1B-OX293-0-70 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00342671 0.00000939
5391 EU-NG-5 PUB1B-OX293-0-70 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00234459 0.00000642
5392 EU-NG-5 PUB1B-OX293-0-70 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01893706 0.00005188
5393 EU-NG-5 PUB1B-OX293-0-70 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021642 0.00000059
5394 EU-NG-5 PUB1B-OX293-0-70 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074059 0.00005682
5395 EU-NG-5 PUB1B-OX293-0-70 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.26151176 0.00071647
5396 EU-NG-5 PUB1B-OX293-0-70 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03877588 0.00010624
5397 EU-NG-5 PUB1B-OX293-0-70 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02434765 0.00006671
5398 EU-NG-5 PUB1B-OX293-0-70 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07214118 0.00019765
5399 EU-NG-5 PUB1B-OX293-0-70 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08566765 0.00023471
5400 EU-NG-5 PUB1B-OX293-0-70 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1533 0.00042
5401 EU-NG-5 PUB1B-OX293-0-70 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05681118 0.00015565
5402 EU-NG-5 PUB1B-OX293-0-70 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.33004588 0.00090424
5403 EU-NG-5 PUB1B-OX293-0-70 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24528 0.000672
5404 EU-NG-5 PUB1B-OX293-0-70 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 28.85647059 0.07905882
5405 EU-NG-5 PUB1B-OX293-0-70 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01487912 0.00004076
5406 EU-NG-5 PUB1B-OX293-0-70 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090176 0.00000247
5407 EU-NG-5 PUB1B-OX293-0-70 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.01854882 0.02470835
5408 EU-NG-5 PUB1B-OX293-0-70 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00000741
5409 EU-NG-5 PUB1C-OX293-0-70 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000494
5410 EU-NG-5 PUB1C-OX293-0-70 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03967765 0.00010871
5411 EU-NG-5 PUB1C-OX293-0-70 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.0000003
5412 EU-NG-5 PUB1C-OX293-0-70 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00991941 0.00002718
5413 EU-NG-5 PUB1C-OX293-0-70 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00050499 0.00000138
5414 EU-NG-5 PUB1C-OX293-0-70 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075748 0.00000208
5415 EU-NG-5 PUB1C-OX293-0-70 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000021
5416 EU-NG-5 PUB1C-OX293-0-70 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00001235
5417 EU-NG-5 PUB1C-OX293-0-70 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00342671 0.00000939
5418 EU-NG-5 PUB1C-OX293-0-70 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00234459 0.00000642
5419 EU-NG-5 PUB1C-OX293-0-70 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01893706 0.00005188
5420 EU-NG-5 PUB1C-OX293-0-70 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021642 0.00000059
5421 EU-NG-5 PUB1C-OX293-0-70 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074059 0.00005682
5422 EU-NG-5 PUB1C-OX293-0-70 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.26151176 0.00071647
5423 EU-NG-5 PUB1C-OX293-0-70 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03877588 0.00010624
5424 EU-NG-5 PUB1C-OX293-0-70 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02434765 0.00006671
5425 EU-NG-5 PUB1C-OX293-0-70 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07214118 0.00019765
5426 EU-NG-5 PUB1C-OX293-0-70 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08566765 0.00023471
5427 EU-NG-5 PUB1C-OX293-0-70 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1533 0.00042
5428 EU-NG-5 PUB1C-OX293-0-70 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05681118 0.00015565
5429 EU-NG-5 PUB1C-OX293-0-70 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.33004588 0.00090424
5430 EU-NG-5 PUB1C-OX293-0-70 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24528 0.000672
5431 EU-NG-5 PUB1C-OX293-0-70 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 28.85647059 0.07905882
5432 EU-NG-5 PUB1C-OX293-0-70 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01487912 0.00004076
5433 EU-NG-5 PUB1C-OX293-0-70 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090176 0.00000247
5434 EU-NG-5 PUB1C-OX293-0-70 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.01854882 0.02470835
5435 EU-NG-5 PUB1C-OX293-0-70 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00000741
5436 EU-NG-5 PUB1D-OX293-0-70 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000494
5437 EU-NG-5 PUB1D-OX293-0-70 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03967765 0.00010871
5438 EU-NG-5 PUB1D-OX293-0-70 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.0000003
5439 EU-NG-5 PUB1D-OX293-0-70 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00991941 0.00002718
5440 EU-NG-5 PUB1D-OX293-0-70 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00050499 0.00000138
5441 EU-NG-5 PUB1D-OX293-0-70 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075748 0.00000208
5442 EU-NG-5 PUB1D-OX293-0-70 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000021
5443 EU-NG-5 PUB1D-OX293-0-70 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00001235
5444 EU-NG-5 PUB1D-OX293-0-70 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00342671 0.00000939
5445 EU-NG-5 PUB1D-OX293-0-70 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00234459 0.00000642
5446 EU-NG-5 PUB1D-OX293-0-70 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01893706 0.00005188
5447 EU-NG-5 PUB1D-OX293-0-70 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021642 0.00000059
5448 EU-NG-5 PUB1D-OX293-0-70 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074059 0.00005682
5449 EU-NG-5 PUB1D-OX293-0-70 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.26151176 0.00071647
5450 EU-NG-5 PUB1D-OX293-0-70 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03877588 0.00010624
5451 EU-NG-5 PUB1D-OX293-0-70 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02434765 0.00006671
5452 EU-NG-5 PUB1D-OX293-0-70 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07214118 0.00019765
5453 EU-NG-5 PUB1D-OX293-0-70 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08566765 0.00023471
5454 EU-NG-5 PUB1D-OX293-0-70 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1533 0.00042
5455 EU-NG-5 PUB1D-OX293-0-70 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05681118 0.00015565
5456 EU-NG-5 PUB1D-OX293-0-70 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.33004588 0.00090424
5457 EU-NG-5 PUB1D-OX293-0-70 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24528 0.000672
5458 EU-NG-5 PUB1D-OX293-0-70 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 28.85647059 0.07905882
5459 EU-NG-5 PUB1D-OX293-0-70 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01487912 0.00004076
5460 EU-NG-5 PUB1D-OX293-0-70 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090176 0.00000247
5461 EU-NG-5 PUB1D-OX293-0-70 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.01854882 0.02470835
5462 EU-NG-5 PUB1D-OX293-0-70 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00000741
5463 EU-NG-5 PUB1E-OX293-0-70 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000494
5464 EU-NG-5 PUB1E-OX293-0-70 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03967765 0.00010871
5465 EU-NG-5 PUB1E-OX293-0-70 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.0000003
5466 EU-NG-5 PUB1E-OX293-0-70 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00991941 0.00002718
5467 EU-NG-5 PUB1E-OX293-0-70 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00050499 0.00000138
5468 EU-NG-5 PUB1E-OX293-0-70 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075748 0.00000208
5469 EU-NG-5 PUB1E-OX293-0-70 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000021
5470 EU-NG-5 PUB1E-OX293-0-70 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00001235
5471 EU-NG-5 PUB1E-OX293-0-70 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00342671 0.00000939
5472 EU-NG-5 PUB1E-OX293-0-70 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00234459 0.00000642
5473 EU-NG-5 PUB1E-OX293-0-70 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01893706 0.00005188
5474 EU-NG-5 PUB1E-OX293-0-70 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021642 0.00000059
5475 EU-NG-5 PUB1E-OX293-0-70 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074059 0.00005682
5476 EU-NG-5 PUB1E-OX293-0-70 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.26151176 0.00071647
5477 EU-NG-5 PUB1E-OX293-0-70 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03877588 0.00010624
5478 EU-NG-5 PUB1E-OX293-0-70 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02434765 0.00006671
5479 EU-NG-5 PUB1E-OX293-0-70 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07214118 0.00019765
5480 EU-NG-5 PUB1E-OX293-0-70 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08566765 0.00023471
5481 EU-NG-5 PUB1E-OX293-0-70 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1533 0.00042
5482 EU-NG-5 PUB1E-OX293-0-70 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05681118 0.00015565
5483 EU-NG-5 PUB1E-OX293-0-70 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.33004588 0.00090424
5484 EU-NG-5 PUB1E-OX293-0-70 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24528 0.000672
5485 EU-NG-5 PUB1E-OX293-0-70 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 28.85647059 0.07905882
5486 EU-NG-5 PUB1E-OX293-0-70 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01487912 0.00004076
5487 EU-NG-5 PUB1E-OX293-0-70 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090176 0.00000247
5488 EU-NG-5 PUB1E-OX293-0-70 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.01854882 0.02470835
5489 EU-NG-5 PUB1E-OX293-0-70 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00000741
5490 EU-NG-5 PUB1F-OX293-0-70 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000494
5491 EU-NG-5 PUB1F-OX293-0-70 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03967765 0.00010871
5492 EU-NG-5 PUB1F-OX293-0-70 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.0000003
5493 EU-NG-5 PUB1F-OX293-0-70 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00991941 0.00002718
5494 EU-NG-5 PUB1F-OX293-0-70 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00050499 0.00000138
5495 EU-NG-5 PUB1F-OX293-0-70 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075748 0.00000208
5496 EU-NG-5 PUB1F-OX293-0-70 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000021
5497 EU-NG-5 PUB1F-OX293-0-70 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00001235
5498 EU-NG-5 PUB1F-OX293-0-70 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00342671 0.00000939
5499 EU-NG-5 PUB1F-OX293-0-70 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00234459 0.00000642
5500 EU-NG-5 PUB1F-OX293-0-70 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01893706 0.00005188
5501 EU-NG-5 PUB1F-OX293-0-70 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021642 0.00000059
5502 EU-NG-5 PUB1F-OX293-0-70 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074059 0.00005682
5503 EU-NG-5 PUB1F-OX293-0-70 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.26151176 0.00071647
5504 EU-NG-5 PUB1F-OX293-0-70 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03877588 0.00010624
5505 EU-NG-5 PUB1F-OX293-0-70 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02434765 0.00006671
5506 EU-NG-5 PUB1F-OX293-0-70 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07214118 0.00019765
5507 EU-NG-5 PUB1F-OX293-0-70 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08566765 0.00023471
5508 EU-NG-5 PUB1F-OX293-0-70 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1533 0.00042
5509 EU-NG-5 PUB1F-OX293-0-70 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05681118 0.00015565
5510 EU-NG-5 PUB1F-OX293-0-70 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.33004588 0.00090424
5511 EU-NG-5 PUB1F-OX293-0-70 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24528 0.000672
5512 EU-NG-5 PUB1F-OX293-0-70 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 28.85647059 0.07905882
5513 EU-NG-5 PUB1F-OX293-0-70 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01487912 0.00004076
5514 EU-NG-5 PUB1F-OX293-0-70 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090176 0.00000247
5515 EU-NG-5 PUB1F-OX293-0-70 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.01854882 0.02470835
5516 EU-NG-5 PUB1F-OX293-0-70 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00000741
5517 EU-NG-5 CUB2-OX293-0-70 7440-38-2 Arsenic and Compounds     No No 0.0002 0.0002 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00180353 0.00000494
5518 EU-NG-5 CUB2-OX293-0-70 7440-39-3 Barium and Compounds     No No 0.0044 0.0044 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03967765 0.00010871
5519 EU-NG-5 CUB2-OX293-0-70 7440-41-7 Beryllium and Compounds     No No 0.000012 0.000012 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00010821 0.0000003
5520 EU-NG-5 CUB2-OX293-0-70 7440-43-9 Cadmium and Compounds     No No 0.0011 0.0011 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00991941 0.00002718
5521 EU-NG-5 CUB2-OX293-0-70 18540-29-9 Chromium VI     No No 0.000056 0.000056 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). Based on assumptions used by the EPA as outlined in the 2011 National Emissions Inventory. EPA assumes that 4 percent of chromium emitted during natural gas combustion is in the form of hexavalent chromium. 0.00050499 0.00000138
5522 EU-NG-5 CUB2-OX293-0-70 7440-48-4 Cobalt and Compounds     No No 0.000084 0.000084 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00075748 0.00000208
5523 EU-NG-5 CUB2-OX293-0-70 7440-50-8 Copper and Compounds     No No 0.00085 0.00085 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.007665 0.000021
5524 EU-NG-5 CUB2-OX293-0-70 7439-92-1 Lead and Compounds     No No 0.0005 0.0005 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00450882 0.00001235
5525 EU-NG-5 CUB2-OX293-0-70 7439-96-5 Manganese and Compounds     No No 0.00038 0.00038 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00342671 0.00000939
5526 EU-NG-5 CUB2-OX293-0-70 7439-97-6 Mercury and Compounds     No No 0.00026 0.00026 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00234459 0.00000642
5527 EU-NG-5 CUB2-OX293-0-70 7440-02-0 Nickel and Compounds     No No 0.0021 0.0021 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01893706 0.00005188
5528 EU-NG-5 CUB2-OX293-0-70 7782-49-2 Selenium and Compounds     No No 0.000024 0.000024 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00021642 0.00000059
5529 EU-NG-5 CUB2-OX293-0-70 7440-62-2 Vanadium (fume or dust)     No No 0.0023 0.0023 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02074059 0.00005682
5530 EU-NG-5 CUB2-OX293-0-70 7440-66-6 Zinc and Compounds     No No 0.029 0.029 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.26151176 0.00071647
5531 EU-NG-5 CUB2-OX293-0-70 75-07-0 Acetaldehyde     No No 0.0043 0.0043 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.03877588 0.00010624
5532 EU-NG-5 CUB2-OX293-0-70 107-02-8 Acrolein     No No 0.0027 0.0027 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.02434765 0.00006671
5533 EU-NG-5 CUB2-OX293-0-70 71-43-2 Benzene     No No 0.008 0.008 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.07214118 0.00019765
5534 EU-NG-5 CUB2-OX293-0-70 100-41-4 Ethylbenzene     No No 0.0095 0.0095 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.08566765 0.00023471
5535 EU-NG-5 CUB2-OX293-0-70 50-00-0 Formaldehyde     No No 0.017 0.017 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.1533 0.00042
5536 EU-NG-5 CUB2-OX293-0-70 110-54-3 Hexane     No No 0.0063 0.0063 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.05681118 0.00015565
5537 EU-NG-5 CUB2-OX293-0-70 108-88-3 Toluene     No No 0.0366 0.0366 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.33004588 0.00090424
5538 EU-NG-5 CUB2-OX293-0-70 1330-20-7 Xylene (mixed isomers)     No No 0.0272 0.0272 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.24528 0.000672
5539 EU-NG-5 CUB2-OX293-0-70 7664-41-7 Ammonia     No No 3.2 3.2 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 28.85647059 0.07905882
5540 EU-NG-5 CUB2-OX293-0-70 1313-27-5 Molybdenum trioxide     No No 0.00165 0.00165 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.01487912 0.00004076
5541 EU-NG-5 CUB2-OX293-0-70 401 PAH     No No 0.0001 0.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00090176 0.00000247
5542 EU-NG-5 CUB2-OX293-0-70 50-32-8 Benzo(a)pyrene     No No 1.0001 1.0001 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 9.01854882 0.02470835
5543 EU-NG-5 CUB2-OX293-0-70 91-20-3 Naphthalene     No No 0.0003 0.0003 lb/MMscf Oregon Department of Environmental Quality, AQ104B, natural gas external combustion, less than 10 MMBtu/hr. DEQ reference CAO NG Ext. Comb. (a). The value for ammonia reflects no SCR or SNCR control. 0.00270529 0.00000741
5544 EU-CT RAC4-CT114-1 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5545 EU-CT RAC4-CT114-1 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5546 EU-CT RAC4-CT114-2 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5547 EU-CT RAC4-CT114-2 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5548 EU-CT RAC4-CT114-3 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5549 EU-CT RAC4-CT114-3 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5550 EU-CT RAC4-CT114-4 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5551 EU-CT RAC4-CT114-4 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5552 EU-CT RAC4-CT114-5 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5553 EU-CT RAC4-CT114-5 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5554 EU-CT RAC4-CT114-6 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5555 EU-CT RAC4-CT114-6 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5556 EU-CT RAC4-CT114-7 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5557 EU-CT RAC4-CT114-7 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5558 EU-CT RAC4-CT114-8 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5559 EU-CT RAC4-CT114-8 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5560 EU-CT RAC4-CT114-9 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5561 EU-CT RAC4-CT114-9 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5562 EU-CT RAC4-CT114-10 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5563 EU-CT RAC4-CT114-10 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5564 EU-CT RAC4-CT114-11 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5565 EU-CT RAC4-CT114-11 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5566 EU-CT RAC4-CT114-12 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5567 EU-CT RAC4-CT114-12 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5568 EU-CT RAC4-CT114-13 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5569 EU-CT RAC4-CT114-13 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5570 EU-CT RAC4-CT114-14 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5571 EU-CT RAC4-CT114-14 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5572 EU-CT RAC4-CT114-15 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5573 EU-CT RAC4-CT114-15 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5574 EU-CT RAC4-CT114-16 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5575 EU-CT RAC4-CT114-16 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5576 EU-CT RAC4-CT114-17 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5577 EU-CT RAC4-CT114-17 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5578 EU-CT RAC4-CT114-18 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5579 EU-CT RAC4-CT114-18 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5580 EU-CT RAC4-CT114-19 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5581 EU-CT RAC4-CT114-19 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5582 EU-CT RAC4-CT114-20 7664-38-2 Phosphoric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5583 EU-CT RAC4-CT114-20 7664-93-9 Sulfuric Acid     No No 0.00000402 0.00000402 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03524995 0.00009658
5584 EU-CT RAC5-CT115-1 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5585 EU-CT RAC5-CT115-1 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5586 EU-CT RAC5-CT115-2 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5587 EU-CT RAC5-CT115-2 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5588 EU-CT RAC5-CT115-3 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5589 EU-CT RAC5-CT115-3 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5590 EU-CT RAC5-CT115-4 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5591 EU-CT RAC5-CT115-4 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5592 EU-CT RAC5-CT115-5 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5593 EU-CT RAC5-CT115-5 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5594 EU-CT RAC5-CT115-6 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5595 EU-CT RAC5-CT115-6 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5596 EU-CT RAC5-CT115-7 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5597 EU-CT RAC5-CT115-7 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5598 EU-CT RAC5-CT115-8 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5599 EU-CT RAC5-CT115-8 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5600 EU-CT RAC5-CT115-9 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5601 EU-CT RAC5-CT115-9 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5602 EU-CT RAC5-CT115-10 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5603 EU-CT RAC5-CT115-10 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5604 EU-CT RAC5-CT115-11 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5605 EU-CT RAC5-CT115-11 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5606 EU-CT RAC5-CT115-12 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5607 EU-CT RAC5-CT115-12 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5608 EU-CT RAC5-CT115-13 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5609 EU-CT RAC5-CT115-13 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5610 EU-CT RAC5-CT115-14 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5611 EU-CT RAC5-CT115-14 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5612 EU-CT RAC5-CT115-15 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5613 EU-CT RAC5-CT115-15 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5614 EU-CT RAC5-CT115-16 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5615 EU-CT RAC5-CT115-16 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5616 EU-CT RAC5-CT115-17 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5617 EU-CT RAC5-CT115-17 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5618 EU-CT CT-114-1-210 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5619 EU-CT CT-114-1-210 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5620 EU-CT CT-114-2-210 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5621 EU-CT CT-114-2-210 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5622 EU-CT CT-114-3-210 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5623 EU-CT CT-114-3-210 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5624 EU-CT CT-114-4-210 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5625 EU-CT CT-114-4-210 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5626 EU-CT CT-114-5-210 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5627 EU-CT CT-114-5-210 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5628 EU-CT CUB3-CT114-21-10 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5629 EU-CT CUB3-CT114-21-10 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5630 EU-CT CUB3-CT114-22-10 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5631 EU-CT CUB3-CT114-22-10 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5632 EU-CT CUB3-CT114-23-10 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5633 EU-CT CUB3-CT114-23-10 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5634 EU-CT CUB3-CT114-24-10 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5635 EU-CT CUB3-CT114-24-10 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5636 EU-CT CUB3-CT114-25-10 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5637 EU-CT CUB3-CT114-25-10 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5638 EU-CT CUB3-CT114-26-10 7664-38-2 Phosphoric Acid     No No 0.00000887 0.00000887 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.07767021 0.0002128
5639 EU-CT CUB3-CT114-26-10 7664-93-9 Sulfuric Acid     No No 0.00000296 0.00000296 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02589007 0.00007093
5640 EU-CT RP1-CT114-1-200 111-30-8 Glutaraldehyde     No No 0.00024044 0.00024044 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 2.10627367 0.00577061
5641 EU-CT RP1-CT114-1-200 67-56-1 Methanol     No No 0.00000264 0.00000264 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02316901 0.00006348
5642 EU-CT RP1-CT114-1-200 7664-38-2 Phosphoric Acid     No No 0.00001623 0.00001623 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.14217347 0.00038952
5643 EU-CT RP1-CT114-1-200 7664-93-9 Sulfuric Acid     No No 0.00000541 0.00000541 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.04739116 0.00012984
5644 EU-CT RP1-CT114-2-200 111-30-8 Glutaraldehyde     No No 0.00024044 0.00024044 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 2.10627367 0.00577061
5645 EU-CT RP1-CT114-2-200 67-56-1 Methanol     No No 0.00000264 0.00000264 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02316901 0.00006348
5646 EU-CT RP1-CT114-2-200 7664-38-2 Phosphoric Acid     No No 0.00001623 0.00001623 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.14217347 0.00038952
5647 EU-CT RP1-CT114-2-200 7664-93-9 Sulfuric Acid     No No 0.00000541 0.00000541 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.04739116 0.00012984
5648 EU-CT RP1-CT114-3-00 111-30-8 Glutaraldehyde     No No 0.00024044 0.00024044 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 2.10627367 0.00577061
5649 EU-CT RP1-CT114-3-00 67-56-1 Methanol     No No 0.00000264 0.00000264 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02316901 0.00006348
5650 EU-CT RP1-CT114-3-00 7664-38-2 Phosphoric Acid     No No 0.00001623 0.00001623 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.14217347 0.00038952
5651 EU-CT RP1-CT114-3-00 7664-93-9 Sulfuric Acid     No No 0.00000541 0.00000541 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.04739116 0.00012984
5652 EU-CT CUB2-CT114-1-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5653 EU-CT CUB2-CT114-1-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5654 EU-CT CUB2-CT114-1-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5655 EU-CT CUB2-CT114-1-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5656 EU-CT CUB2-CT114-2-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5657 EU-CT CUB2-CT114-2-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5658 EU-CT CUB2-CT114-2-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5659 EU-CT CUB2-CT114-2-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5660 EU-CT CUB2-CT114-3-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5661 EU-CT CUB2-CT114-3-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5662 EU-CT CUB2-CT114-3-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5663 EU-CT CUB2-CT114-3-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5664 EU-CT CUB2-CT114-4-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5665 EU-CT CUB2-CT114-4-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5666 EU-CT CUB2-CT114-4-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5667 EU-CT CUB2-CT114-4-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5668 EU-CT CUB2-CT114-5-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5669 EU-CT CUB2-CT114-5-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5670 EU-CT CUB2-CT114-5-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5671 EU-CT CUB2-CT114-5-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5672 EU-CT CUB2-CT114-6-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5673 EU-CT CUB2-CT114-6-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5674 EU-CT CUB2-CT114-6-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5675 EU-CT CUB2-CT114-6-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5676 EU-CT CUB2-CT114-7-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5677 EU-CT CUB2-CT114-7-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5678 EU-CT CUB2-CT114-7-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5679 EU-CT CUB2-CT114-7-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5680 EU-CT CUB2-CT114-8-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5681 EU-CT CUB2-CT114-8-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5682 EU-CT CUB2-CT114-8-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5683 EU-CT CUB2-CT114-8-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5684 EU-CT CUB2-CT114-9-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5685 EU-CT CUB2-CT114-9-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5686 EU-CT CUB2-CT114-9-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5687 EU-CT CUB2-CT114-9-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5688 EU-CT CUB2-CT114-10-210 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5689 EU-CT CUB2-CT114-10-210 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5690 EU-CT CUB2-CT114-10-210 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5691 EU-CT CUB2-CT114-10-210 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5692 EU-CT CUB2-CT114-11-10 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5693 EU-CT CUB2-CT114-11-10 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5694 EU-CT CUB2-CT114-11-10 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5695 EU-CT CUB2-CT114-11-10 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5696 EU-CT CUB2-CT114-12-10 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5697 EU-CT CUB2-CT114-12-10 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5698 EU-CT CUB2-CT114-12-10 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5699 EU-CT CUB2-CT114-12-10 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5700 EU-CT CUB2-CT114-13-10 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5701 EU-CT CUB2-CT114-13-10 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5702 EU-CT CUB2-CT114-13-10 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5703 EU-CT CUB2-CT114-13-10 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5704 EU-CT CUB2-CT114-14-10 111-30-8 Glutaraldehyde     No No 0.00021446 0.00021446 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 1.87864457 0.00514697
5705 EU-CT CUB2-CT114-14-10 67-56-1 Methanol     No No 0.00000236 0.00000236 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02066509 0.00005662
5706 EU-CT CUB2-CT114-14-10 7664-38-2 Phosphoric Acid     No No 0.00000724 0.00000724 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.06340425 0.00017371
5707 EU-CT CUB2-CT114-14-10 7664-93-9 Sulfuric Acid     No No 0.00000241 0.00000241 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02113475 0.0000579
5708 EU-CT F20-CT114-1-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5709 EU-CT F20-CT114-1-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5710 EU-CT F20-CT114-2-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5711 EU-CT F20-CT114-2-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5712 EU-CT F20-CT114-3-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5713 EU-CT F20-CT114-3-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5714 EU-CT F20-CT114-4-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5715 EU-CT F20-CT114-4-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5716 EU-CT F20-CT114-5-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5717 EU-CT F20-CT114-5-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5718 EU-CT F20-CT114-6-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5719 EU-CT F20-CT114-6-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5720 EU-CT F20-CT114-7-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5721 EU-CT F20-CT114-7-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5722 EU-CT F20-CT114-8-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5723 EU-CT F20-CT114-8-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5724 EU-CT F20-CT114-9-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5725 EU-CT F20-CT114-9-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5726 EU-CT F20-CT114-10-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5727 EU-CT F20-CT114-10-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5728 EU-CT F20-CT114-11-210 7664-38-2 Phosphoric Acid     No No 0.00000921 0.00000921 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08069632 0.00022109
5729 EU-CT F20-CT114-11-210 7664-93-9 Sulfuric Acid     No No 0.00000307 0.00000307 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02689877 0.0000737
5730 EU-CT N2-CT114-1 7664-38-2 Phosphoric Acid     No No 0.00010865 0.00010865 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.95174858 0.00260753
5731 EU-CT N2-CT114-1 7664-93-9 Sulfuric Acid     No No 0.00010865 0.00010865 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.95174858 0.00260753
5732 EU-CT N2-CT114-2 7664-38-2 Phosphoric Acid     No No 0.00010865 0.00010865 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.95174858 0.00260753
5733 EU-CT N2-CT114-2 7664-93-9 Sulfuric Acid     No No 0.00010865 0.00010865 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.95174858 0.00260753
5734 EU-CT N2-CT114-3 7664-38-2 Phosphoric Acid     No No 0.00010865 0.00010865 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.95174858 0.00260753
5735 EU-CT N2-CT114-3 7664-93-9 Sulfuric Acid     No No 0.00010865 0.00010865 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.95174858 0.00260753
5736 EU-CT RACB3-CT-114-1-35 111-30-8 Glutaraldehyde     No No 0.00048164 0.00048164 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 4.2191226 0.01155924
5737 EU-CT RACB3-CT-114-1-35 67-56-1 Methanol     No No 0.0000053 0.0000053 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.04641035 0.00012715
5738 EU-CT RACB3-CT-114-1-35 7664-38-2 Phosphoric Acid     No No 0.00003251 0.00003251 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.28479078 0.00078025
5739 EU-CT RACB3-CT-114-1-35 7664-93-9 Sulfuric Acid     No No 0.00001084 0.00001084 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.09493026 0.00026008
5740 EU-CT RACB3-CT-114-2-35 111-30-8 Glutaraldehyde     No No 0.00048164 0.00048164 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 4.2191226 0.01155924
5741 EU-CT RACB3-CT-114-2-35 67-56-1 Methanol     No No 0.0000053 0.0000053 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.04641035 0.00012715
5742 EU-CT RACB3-CT-114-2-35 7664-38-2 Phosphoric Acid     No No 0.00003251 0.00003251 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.28479078 0.00078025
5743 EU-CT RACB3-CT-114-2-35 7664-93-9 Sulfuric Acid     No No 0.00001084 0.00001084 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.09493026 0.00026008
5744 EU-CT RACB3-CT-114-3-35 111-30-8 Glutaraldehyde     No No 0.00048164 0.00048164 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 4.2191226 0.01155924
5745 EU-CT RACB3-CT-114-3-35 67-56-1 Methanol     No No 0.0000053 0.0000053 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.04641035 0.00012715
5746 EU-CT RACB3-CT-114-3-35 7664-38-2 Phosphoric Acid     No No 0.00003251 0.00003251 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.28479078 0.00078025
5747 EU-CT RACB3-CT-114-3-35 7664-93-9 Sulfuric Acid     No No 0.00001084 0.00001084 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.09493026 0.00026008
5748 EU-CT AL4-CHW-CT2 7664-38-2 Phosphoric Acid     No No 0.0000095 0.0000095 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08321808 0.00022799
5749 EU-CT AL4-CHW-CT2 7664-93-9 Sulfuric Acid     No No 0.00000317 0.00000317 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02773936 0.000076
5750 EU-CT AL4-CHW-CT3 7664-38-2 Phosphoric Acid     No No 0.0000095 0.0000095 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.08321808 0.00022799
5751 EU-CT AL4-CHW-CT3 7664-93-9 Sulfuric Acid     No No 0.00000317 0.00000317 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.02773936 0.000076
5752 EU-CT F15-CT29-1-1 7664-38-2 Phosphoric Acid     No No 0.00001976 0.00001976 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.17309361 0.00047423
5753 EU-CT F15-CT29-1-1 7664-93-9 Sulfuric Acid     No No 0.00000659 0.00000659 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.05769787 0.00015808
5754 EU-CT F15-CT29-1-2 7664-38-2 Phosphoric Acid     No No 0.00001976 0.00001976 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.17309361 0.00047423
5755 EU-CT F15-CT29-1-2 7664-93-9 Sulfuric Acid     No No 0.00000659 0.00000659 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.05769787 0.00015808
5756 EU-CT F15-CT29-1-3 7664-38-2 Phosphoric Acid     No No 0.00001976 0.00001976 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.17309361 0.00047423
5757 EU-CT F15-CT29-1-3 7664-93-9 Sulfuric Acid     No No 0.00000659 0.00000659 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.05769787 0.00015808
5758 EU-CT F15-CT29-1-4 7664-38-2 Phosphoric Acid     No No 0.00001976 0.00001976 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.17309361 0.00047423
5759 EU-CT F15-CT29-1-4 7664-93-9 Sulfuric Acid     No No 0.00000659 0.00000659 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.05769787 0.00015808
5760 EU-CT F15-CT29-1-5 7664-38-2 Phosphoric Acid     No No 0.00001976 0.00001976 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.17309361 0.00047423
5761 EU-CT F15-CT29-1-5 7664-93-9 Sulfuric Acid     No No 0.00000659 0.00000659 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.05769787 0.00015808
5762 EU-CT F15-CT29-1-6-1 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03106808 0.00008512
5763 EU-CT F15-CT29-1-6-1 7664-93-9 Sulfuric Acid     No No 0.00000118 0.00000118 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.01035603 0.00002837
5764 EU-CT RA5-CT114-1 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5765 EU-CT RA5-CT114-1 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5766 EU-CT RA6-CT114-1 7664-38-2 Phosphoric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
5767 EU-CT RA6-CT114-1 7664-93-9 Sulfuric Acid     No No 0.00000355 0.00000355 lb/hr Hourly emission rates estimated based on vendor drift eliminator efficiency and cooling tower makeup water chemical composition. 0.03110289 0.00008521
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3. Pollutant Emissions - EF

  A B C D E F G H I J K L M N O P Q R S T
1 AQ520 Form - Version 2.0                                    
2 Intel Corporation (Aloha / Ronler Acres)                                    
3 Source No. 34-2681-ST-02                                    
4 Submitted on 11/04/2025                                    
6 Toxics Emissions Unit (TEU) Information Material Information Emissions Release Information Material Usage Material Waste
7 Toxics Emissions Unit (TEU) ID Toxics Emissions
Sub-Unit (TESU) ID		 TEU/TESU Description Control Device(s) Material Name Manufacturer Emission Type
(Point or Fugitive)		 Stack or Fugitive ID Annual [lb/year] Max Daily [lb/day] Annual [lb/year] Max Daily [lb/day]
8 Actual Requested
PTE		 Is Requested PTE Capacity? Actual Requested
PTE		 Is Requested PTE Capacity? Actual Requested
PTE		 Is Requested PTE Capacity? Actual Requested
PTE		 Is Requested PTE Capacity?

4. TEUs & Activities- MB

  A B C D E F G H I J K L M
1 AQ520 Form - Version 2.0                      
2 Intel Corporation (Aloha / Ronler Acres)                      
3 Source No. 34-2681-ST-02                      
4 Submitted on 11/04/2025                      
6 Toxics Emissions Unit (TEU) Information Material Information Toxic Air Contaminant (TAC) Information Emissions Information Calculated Emissions
- Requested PTE
7 Toxics Emissions Unit (TEU) ID Toxics Emissions
Sub-Unit (TESU) ID		 Material Name CASRN or DEQ ID Toxic Air Contaminant (TAC) Name Percent Composition Capture Efficiency (CE) Transfer Efficiency
(TE)		 Retention Efficiency
(RE)		 Destruction/Removal Efficiency (DRE) Reference/Notes Annual [lb/year] Max Daily [lb/day]
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166                       0 0
167                       0 0
168                       0 0
169                       0 0
170                       0 0
171                       0 0
172                       0 0
173                       0 0
174                       0 0
175                       0 0
176                       0 0
177                       0 0
178                       0 0
179                       0 0
180                       0 0
181                       0 0
182                       0 0
183                       0 0
184                       0 0
185                       0 0
186                       0 0
187                       0 0
188                       0 0
189                       0 0
190                       0 0
191                       0 0
192                       0 0
193                       0 0
194                       0 0
195                       0 0
196                       0 0
197                       0 0
198                       0 0
199                       0 0
200                       0 0
201                       0 0
202                       0 0
203                       0 0
204                       0 0
205                       0 0
206                       0 0
207                       0 0
208                       0 0
209                       0 0
210                       0 0
211                       0 0
212                       0 0
213                       0 0
214                       0 0
215                       0 0
216                       0 0
217                       0 0
218                       0 0
219                       0 0
220                       0 0
221                       0 0
222                       0 0
223                       0 0
224                       0 0
225                       0 0
226                       0 0
227                       0 0
228                       0 0
229                       0 0
230                       0 0
231                       0 0
232                       0 0
233                       0 0
234                       0 0
235                       0 0
236                       0 0
237                       0 0
238                       0 0
239                       0 0
240                       0 0
241                       0 0
242                       0 0
243                       0 0
244                       0 0
245                       0 0
246                       0 0
247                       0 0
248                       0 0
249                       0 0
250                       0 0
251                       0 0
252                       0 0
253                       0 0
254                       0 0
255                       0 0
256                       0 0
257                       0 0
258                       0 0
259                       0 0
260                       0 0
261                       0 0
262                       0 0
263                       0 0
264                       0 0
265                       0 0
266                       0 0
267                       0 0
268                       0 0
269                       0 0
270                       0 0
271                       0 0
272                       0 0
273                       0 0
274                       0 0
275                       0 0
276                       0 0
277                       0 0
278                       0 0
279                       0 0
280                       0 0
281                       0 0
282                       0 0
283                       0 0
284                       0 0
285                       0 0
286                       0 0
287                       0 0
288                       0 0
289                       0 0
290                       0 0
291                       0 0
292                       0 0
293                       0 0
294                       0 0
295                       0 0
296                       0 0
297                       0 0
298                       0 0
299                       0 0
300                       0 0
301                       0 0
302                       0 0
303                       0 0
304                       0 0
305                       0 0
306                       0 0
307                       0 0
308                       0 0
309                       0 0
310                       0 0
311                       0 0
312                       0 0
313                       0 0
314                       0 0
315                       0 0
316                       0 0
317                       0 0
318                       0 0
319                       0 0
320                       0 0
321                       0 0
322                       0 0
323                       0 0
324                       0 0
325                       0 0
326                       0 0
327                       0 0
328                       0 0
329                       0 0
330                       0 0
331                       0 0
332                       0 0
333                       0 0
334                       0 0
335                       0 0
336                       0 0
337                       0 0
338                       0 0
339                       0 0
340                       0 0
341                       0 0
342                       0 0
343                       0 0
344                       0 0
345                       0 0
346                       0 0
347                       0 0
348                       0 0
349                       0 0
350                       0 0
351                       0 0
352                       0 0
353                       0 0
354                       0 0
355                       0 0
356                       0 0
357                       0 0
358                       0 0
359                       0 0
360                       0 0
361                       0 0
362                       0 0
363                       0 0
364                       0 0
365                       0 0
366                       0 0
367                       0 0
368                       0 0
369                       0 0
370                       0 0
371                       0 0
372                       0 0
373                       0 0
374                       0 0
375                       0 0
376                       0 0
377                       0 0
378                       0 0
379                       0 0
380                       0 0
381                       0 0
382                       0 0
383                       0 0
384                       0 0
385                       0 0
386                       0 0
387                       0 0
388                       0 0
389                       0 0
390                       0 0
391                       0 0
392                       0 0
393                       0 0
394                       0 0
395                       0 0
396                       0 0
397                       0 0
398                       0 0
399                       0 0
400                       0 0
401                       0 0
402                       0 0
403                       0 0
404                       0 0
405                       0 0
406                       0 0
407                       0 0
408                       0 0
409                       0 0
410                       0 0
411                       0 0
412                       0 0
413                       0 0
414                       0 0
415                       0 0
416                       0 0
417                       0 0
418                       0 0
419                       0 0
420                       0 0
421                       0 0
422                       0 0
423                       0 0
424                       0 0
425                       0 0
426                       0 0
427                       0 0
428                       0 0
429                       0 0
430                       0 0
431                       0 0
432                       0 0
433                       0 0
434                       0 0
435                       0 0
436                       0 0
437                       0 0
438                       0 0
439                       0 0
440                       0 0
441                       0 0
442                       0 0
443                       0 0
444                       0 0
445                       0 0
446                       0 0
447                       0 0
448                       0 0
449                       0 0
450                       0 0
451                       0 0
452                       0 0
453                       0 0
454                       0 0
455                       0 0
456                       0 0
457                       0 0
458                       0 0
459                       0 0
460                       0 0
461                       0 0
462                       0 0
463                       0 0
464                       0 0
465                       0 0
466                       0 0
467                       0 0
468                       0 0
469                       0 0
470                       0 0
471                       0 0
472                       0 0
473                       0 0
474                       0 0
475                       0 0
476                       0 0
477                       0 0
478                       0 0
479                       0 0
480                       0 0
481                       0 0
482                       0 0
483                       0 0
484                       0 0
485                       0 0
486                       0 0
487 INSERT ROWS ABOVE THIS LINE INSERT ROWS ABOVE THIS LINE INSERT ROWS ABOVE THIS LINE

5. Pollutant Emissions - MB

  A B C
1 AQ520 Form - Version 2.0  
2 Toxic Air Contaminant Priority List  
3 Effective 11/17/2021  
4 OAR 340-247-8010 Table 1  
6 CASRN or DEQ ID Chemical Name HAP
7 630-20-6 1,1,1,2-Tetrachloroethane  
8 811-97-2 1,1,1,2-Tetrafluoroethane  
9 71-55-6 1,1,1-Trichloroethane (methyl chloroform) Y
10 79-34-5 1,1,2,2-Tetrachloroethane Y
11 79-00-5 1,1,2-Trichloroethane (vinyl trichloride) Y
12 75-34-3 1,1-Dichloroethane (ethylidene dichloride) Y
13 75-37-6 1,1-Difluoroethane  
14 57-14-7 1,1-Dimethylhydrazine Y
15 67562-39-4 1,2,3,4,6,7,8-Heptachlorodibenzofuran (HpCDF) Y
16 35822-46-9 1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin (HpCDD) Y
17 55673-89-7 1,2,3,4,7,8,9-Heptachlorodibenzofuran (HpCDF) Y
18 70648-26-9 1,2,3,4,7,8-Hexachlorodibenzofuran (HxCDF) Y
19 39227-28-6 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin (HxCDD) Y
20 57117-44-9 1,2,3,6,7,8-Hexachlorodibenzofuran (HxCDF) Y
21 57653-85-7 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin (HxCDD) Y
22 72918-21-9 1,2,3,7,8,9-Hexachlorodibenzofuran (HxCDF) Y
23 19408-74-3 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin (HxCDD) Y
24 57117-41-6 1,2,3,7,8-Pentachlorodibenzofuran (PeCDF) Y
25 40321-76-4 1,2,3,7,8-Pentachlorodibenzo-p-dioxin (PeCDD) Y
26 96-18-4 1,2,3-Trichloropropane  
27 526-73-8 1,2,3-Trimethylbenzene  
28 120-82-1 1,2,4-Trichlorobenzene Y
29 95-63-6 1,2,4-Trimethylbenzene  
30 96-12-8 1,2-Dibromo-3-chloropropane (DBCP) Y
31 95-50-1 1,2-Dichlorobenzene  
32 78-87-5 1,2-Dichloropropane (propylene dichloride) Y
33 540-73-8 1,2-Dimethylhydrazine  
34 122-66-7 1,2-Diphenylhydrazine (hydrazobenzene) Y
35 106-88-7 1,2-Epoxybutane Y
36 75-55-8 1,2-Propyleneimine (2-methylaziridine) Y
37 108-67-8 1,3,5-Trimethylbenzene  
38 106-99-0 1,3-Butadiene Y
39 541-73-1 1,3-Dichlorobenzene  
40 542-75-6 1,3-Dichloropropene Y
41 1120-71-4 1,3-Propane sultone Y
42 123-91-1 1,4-Dioxane Y
43 42397-64-8 1,6-Dinitropyrene Y
44 42397-65-9 1,8-Dinitropyrene Y
45 555-84-0 1-[(5-Nitrofurfurylidene)-amino]-2-imidazolidinone  
46 82-28-0 1-Amino-2-methylanthraquinone  
47 106-94-5 1-Bromopropane (n-propyl bromide) Y
48 75-68-3 1-Chloro-1,1-difluoroethane  
49 832-69-9 1-Methylphenanthrene Y
50 2381-21-7 1-Methylpyrene Y
51 5522-43-0 1-Nitropyrene Y
52 540-84-1 2,2,4-Trimethylpentane Y
53 60851-34-5 2,3,4,6,7,8-Hexachlorodibenzofuran (HxCDF) Y
54 58-90-2 2,3,4,6-Tetrachlorophenol  
55 57117-31-4 2,3,4,7,8-Pentachlorodibenzofuran (PeCDF) Y
56 51207-31-9 2,3,7,8-Tetrachlorodibenzofuran (TcDF) Y
57 1746-01-6 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) Y
58 96-13-9 2,3-Dibromo-1-propanol  
59 95-95-4 2,4,5-Trichlorophenol Y
60 88-06-2 2,4,6-Trichlorophenol Y
61 53-19-0 2,4'-DDD (2,4'-dichlorodiphenyldichloroethane)  
62 3424-82-6 2,4'-DDE (2,4'-dichlorodiphenyldichloroethene)  
63 789-02-6 2,4'-DDT (2,4'-dichlorodiphenyltrichloroethane)  
64 615-05-4 2,4-Diaminoanisole  
65 39156-41-7 2,4-Diaminoanisole sulfate  
66 95-80-7 2,4-Diaminotoluene (2,4-toluene diamine) Y
67 120-83-2 2,4-Dichlorophenol  
68 51-28-5 2,4-Dinitrophenol Y
69 121-14-2 2,4-Dinitrotoluene Y
70 606-20-2 2,6-Dinitrotoluene  
71 53-96-3 2-Acetylaminofluorene Y
72 68006-83-7 2-Amino-3-methyl-9H pyrido[2,3-b]indole  
73 76180-96-6 2-Amino-3-methylimidazo-[4,5-f]quinoline  
74 712-68-5 2-Amino-5-(5-nitro-2-furyl)-1,3,4-thiadiazole  
75 117-79-3 2-Aminoanthraquinone  
76 78-93-3 2-Butanone (methyl ethyl ketone) Y
77 532-27-4 2-Chloroacetophenone Y
78 95-57-8 2-Chlorophenol  
79 91-57-6 2-Methyl naphthalene Y
80 129-15-7 2-Methyl-1-nitroanthraquinone  
81 75-86-5 2-Methyllactonitrile (acetone cyanohydrin)  
82 109-06-8 2-Methylpyridine  
83 91-59-8 2-Naphthylamine  
84 607-57-8 2-Nitrofluorene Y
85 79-46-9 2-Nitropropane Y
86 90-43-7 2-Phenylphenol  
87 91-94-1 3,3'-Dichlorobenzidine Y
88 119-90-4 3,3'-Dimethoxybenzidine Y
89 119-93-7 3,3'-Dimethylbenzidine (o-tolidine) Y
90 6109-97-3 3-Amino-9-ethylcarbazole hydrochloride  
91 563-47-3 3-Chloro-2-methyl-1-propene  
92 56-49-5 3-Methylcholanthrene Y
93 72-54-8 4,4'-DDD (4,4'-dichlorodiphenyldichloroethane)  
94 72-55-9 4,4'-DDE (4,4'-dichlorodiphenyldichloroethene) Y
95 101-80-4 4,4'-Diaminodiphenyl ether  
96 80-05-7 4,4'-Isopropylidenediphenol (bisphenol A)  
97 101-14-4 4,4'-Methylene bis(2-chloroaniline) (MOCA) Y
98 838-88-0 4,4'-Methylene bis(2-methylaniline)  
99 101-61-1 4,4'-Methylene bis(N,N'-dimethyl)aniline  
100 101-77-9 4,4'-Methylenedianiline (and its dichloride) Y
101 13552-44-8 4,4'-Methylenedianiline dihydrochloride  
102 139-65-1 4,4'-Thiodianiline  
103 534-52-1 4,6-Dinitro-o-cresol (and salts) Y
104 92-67-1 4-Aminobiphenyl Y
105 95-83-0 4-Chloro-o-phenylenediamine  
106 60-11-7 4-Dimethylaminoazobenzene Y
107 92-93-3 4-Nitrobiphenyl Y
108 100-02-7 4-Nitrophenol Y
109 57835-92-4 4-Nitropyrene Y
110 104-40-5 4-Nonylphenol (and ethoxylates)  
111 100-40-3 4-Vinylcyclohexene  
112 3697-24-3 5-Methylchrysene Y
113 602-87-9 5-Nitroacenaphthene Y
114 99-59-2 5-Nitro-o-anisidine  
115 7496-02-8 6-Nitrochrysene Y
116 57-97-6 7,12-Dimethylbenz[a]anthracene Y
117 194-59-2 7H-Dibenzo[c,g]carbazole Y
118 26148-68-5 A-alpha-c(2-amino-9h-pyrido[2,3-b]indole)  
119 83-32-9 Acenaphthene Y
120 208-96-8 Acenaphthylene Y
121 75-07-0 Acetaldehyde Y
122 60-35-5 Acetamide Y
123 67-64-1 Acetone  
124 75-05-8 Acetonitrile Y
125 98-86-2 Acetophenone Y
126 107-02-8 Acrolein Y
127 79-06-1 Acrylamide Y
128 79-10-7 Acrylic acid Y
129 107-13-1 Acrylonitrile Y
130 50-76-0 Actinomycin D  
131 1596-84-5 Alar  
132 309-00-2 Aldrin  
133 107-05-1 Allyl chloride Y
134 319-84-6 alpha-Hexachlorocyclohexane  
135 7429-90-5 Aluminum and compounds  
136 1344-28-1 Aluminum oxide (fibrous forms)  
137 61-82-5 Amitrole  
138 7664-41-7 Ammonia  
139 7803-63-6 Ammonium bisulfate  
140 6484-52-2 Ammonium nitrate  
141 7783-20-2 Ammonium sulfate  
142 62-53-3 Aniline Y
143 191-26-4 Anthanthrene  
144 120-12-7 Anthracene Y
145 7440-36-0 Antimony and compounds Y
146 1309-64-4 Antimony trioxide  
147 140-57-8 Aramite  
148 7440-38-2 Arsenic and compounds Y
149 7784-42-1 Arsine  
150 1332-21-4 Asbestos Y
151 492-80-8 Auramine  
152 115-02-6 Azaserine  
153 446-86-6 Azathioprine  
154 103-33-3 Azobenzene  
155 7440-39-3 Barium and compounds  
156 56-55-3 Benz[a]anthracene Y
157 71-43-2 Benzene Y
158 92-87-5 Benzidine (and its salts) Y
159 50-32-8 Benzo[a]pyrene Y
160 205-99-2 Benzo[b]fluoranthene Y
161 205-12-9 Benzo[c]fluorene  
162 192-97-2 Benzo[e]pyrene Y
163 191-24-2 Benzo[g,h,i]perylene Y
164 205-82-3 Benzo[j]fluoranthene Y
165 207-08-9 Benzo[k]fluoranthene Y
166 271-89-6 Benzofuran  
167 98-07-7 Benzoic trichloride (benzotrichloride) Y
168 98-88-4 Benzoyl chloride  
169 94-36-0 Benzoyl peroxide  
170 100-44-7 Benzyl chloride Y
171 1694-09-3 Benzyl Violet 4B  
172 7440-41-7 Beryllium and compounds Y
173 1304-56-9 Beryllium oxide  
174 13510-49-1 Beryllium sulfate  
175 3068-88-0 beta-Butyrolactone  
176 319-85-7 beta-Hexachlorocyclohexane  
177 57-57-8 beta-Propiolactone Y
178 92-52-4 Biphenyl Y
179 111-44-4 bis(2-Chloroethyl) ether (BCEE) Y
180 103-23-1 bis(2-Ethylhexyl) adipate  
181 117-81-7 bis(2-Ethylhexyl) phthalate (DEHP) Y
182 542-88-1 bis(Chloromethyl) ether Y
183 7726-95-6 Bromine and compounds  
184 7789-30-2 Bromine pentafluoride  
185 75-27-4 Bromodichloromethane  
186 75-25-2 Bromoform Y
187 74-83-9 Bromomethane (methyl bromide) Y
188 141-32-2 Butyl acrylate  
189 85-68-7 Butyl benzyl phthalate  
190 25013-16-5 Butylated hydroxyanisole  
191 569-61-9 C.I. Basic Red 9 monohydrochloride  
192 7440-43-9 Cadmium and compounds Y
193 156-62-7 Calcium cyanamide Y
194 105-60-2 Caprolactam  
195 2425-06-1 Captafol  
196 133-06-2 Captan Y
197 63-25-2 Carbaryl Y
198 86-74-8 Carbazole Y
199 89 Carbon black extracts  
200 75-15-0 Carbon disulfide Y
201 56-23-5 Carbon tetrachloride Y
202 463-58-1 Carbonyl sulfide Y
203 9000-07-1 Carrageenan (degraded)  
204 120-80-9 Catechol Y
205 351 Ceramic fibers Y
206 133-90-4 Chloramben Y
207 305-03-3 Chlorambucil  
208 57-74-9 Chlordane Y
209 143-50-0 Chlordecone  
210 115-28-6 Chlorendic acid  
211 76-13-1 Chlorinated fluorocarbon (1,1,2-trichloro-1,2,2-trifluoroethane, CFC-113)
212 108171-26-2 Chlorinated paraffins  
213 7782-50-5 Chlorine Y
214 10049-04-4 Chlorine dioxide  
215 79-11-8 Chloroacetic acid Y
216 85535-84-8 Chloroalkanes C10-13 (chlorinated paraffins)  
217 108-90-7 Chlorobenzene Y
218 510-15-6 Chlorobenzilate (ethyl-4,4'-dichlorobenzilate) Y
219 75-45-6 Chlorodifluoromethane (Freon 22)  
220 75-00-3 Chloroethane (ethyl chloride) Y
221 67-66-3 Chloroform Y
222 74-87-3 Chloromethane (methyl chloride) Y
223 107-30-2 Chloromethyl methyl ether (technical grade) Y
224 76-06-2 Chloropicrin  
225 126-99-8 Chloroprene Y
226 1897-45-6 Chlorothalonil  
227 54749-90-5 Chlorozotocin  
228 7738-94-5 Chromic(VI) acid, including chromic acid aerosol mist and chromium trioxide Y
229 18540-29-9 Chromium VI, chromate and dichromate particulate Y
230 218-01-9 Chrysene Y
231 87-29-6 Cinnamyl anthranilate  
232 7440-48-4 Cobalt and compounds Y
233 148 Coke oven emissions Y
234 7440-50-8 Copper and compounds  
235 150 Creosotes  
236 1319-77-3 Cresols (mixture), including m-cresol, o-cresol, p-cresol Y
237 4170-30-3 Crotonaldehyde  
238 80-15-9 Cumene hydroperoxide  
239 135-20-6 Cupferron  
240 74-90-8 Cyanide, hydrogen Y
241 110-82-7 Cyclohexane  
242 108-93-0 Cyclohexanol  
243 66-81-9 Cycloheximide  
244 27208-37-3 Cyclopenta[c,d]pyrene  
245 50-18-0 Cyclophosphamide (anhydrous)  
246 6055-19-2 Cyclophosphamide (hydrated)  
247 5160-02-1 D & C Red No. 9  
248 4342-03-4 Dacarbazine  
249 117-10-2 Danthron (chrysazin)  
250 3547-04-4 DDE (1-chloro-4-[1-(4-chlorophenyl)ethyl]benzene) Y
251 50-29-3 DDT  
252 333-41-5 Diazinon  
253 334-88-3 Diazomethane Y
254 226-36-8 Dibenz[a,h]acridine Y
255 53-70-3 Dibenz[a,h]anthracene Y
256 224-42-0 Dibenz[a,j]acridine Y
257 5385-75-1 Dibenzo[a,e]fluoranthene  
258 192-65-4 Dibenzo[a,e]pyrene Y
259 189-64-0 Dibenzo[a,h]pyrene Y
260 189-55-9 Dibenzo[a,i]pyrene Y
261 191-30-0 Dibenzo[a,l]pyrene Y
262 132-64-9 Dibenzofuran Y
263 124-48-1 Dibromochloromethane  
264 84-74-2 Dibutyl phthalate Y
265 75-71-8 Dichlorodifluoromethane (Freon 12)  
266 75-43-4 Dichlorofluoromethane (Freon 21)  
267 75-09-2 Dichloromethane (methylene chloride) Y
268 94-75-7 Dichlorophenoxyacetic acid, salts and esters (2,4-D) Y
269 62-73-7 Dichlorvos (DDVP) Y
270 115-32-2 Dicofol  
271 84-61-7 Di-cyclohexyl phthalate (DCHP)  
272 60-57-1 Dieldrin  
273 200 Diesel particulate matter  
274 111-42-2 Diethanolamine Y
275 64-67-5 Diethyl sulfate Y
276 111-46-6 Diethylene glycol  
277 111-96-6 Diethylene glycol dimethyl ether Y
278 112-34-5 Diethylene glycol monobutyl ether Y
279 111-90-0 Diethylene glycol monoethyl ether Y
280 111-77-3 Diethylene glycol monomethyl ether Y
281 627-44-1 Diethylmercury  
282 84-66-2 Diethylphthalate  
283 101-90-6 Diglycidyl resorcinol ether  
284 94-58-6 Dihydrosafrole  
285 79-44-7 Dimethyl carbamoyl chloride Y
286 68-12-2 Dimethyl formamide Y
287 131-11-3 Dimethyl phthalate Y
288 77-78-1 Dimethyl sulfate Y
289 593-74-8 Dimethylmercury  
290 513-37-1 Dimethylvinylchloride  
291 630-93-3 Diphenylhydantoin  
292 25265-71-8 Dipropylene glycol  
293 34590-94-8 Dipropylene glycol monomethyl ether  
294 1937-37-7 Direct Black 38  
295 2602-46-2 Direct Blue 6  
296 16071-86-6 Direct Brown 95 (technical grade)  
297 2475-45-8 Disperse Blue 1  
298 298-04-4 Disulfoton  
299 106-89-8 Epichlorohydrin Y
300 227 Epoxy resins  
301 12510-42-8 Erionite  
302 140-88-5 Ethyl acrylate Y
303 100-41-4 Ethyl benzene Y
304 74-85-1 Ethylene  
305 106-93-4 Ethylene dibromide (EDB, 1,2-dibromoethane) Y
306 107-06-2 Ethylene dichloride (EDC, 1,2-dichloroethane) Y
307 107-21-1 Ethylene glycol Y
308 629-14-1 Ethylene glycol diethyl ether Y
309 110-71-4 Ethylene glycol dimethyl ether Y
310 111-76-2 Ethylene glycol monobutyl ether  
311 110-80-5 Ethylene glycol monoethyl ether Y
312 111-15-9 Ethylene glycol monoethyl ether acetate Y
313 109-86-4 Ethylene glycol monomethyl ether Y
314 110-49-6 Ethylene glycol monomethyl ether acetate Y
315 2807-30-9 Ethylene glycol monopropyl ether Y
316 75-21-8 Ethylene oxide Y
317 96-45-7 Ethylene thiourea Y
318 151-56-4 Ethyleneimine (aziridine) Y
319 10028-22-5 Ferric sulfate 0
320 206-44-0 Fluoranthene Y
321 86-73-7 Fluorene Y
322 239 Fluorides  
323 7782-41-4 Fluorine gas  
324 50-00-0 Formaldehyde Y
325 110-00-9 Furan  
326 60568-05-0 Furmecyclox  
327 3688-53-7 Furylfuramide  
328 58-89-9 gamma-Hexachlorocyclohexane (Lindane) Y
329 352 Glasswool fibers Y
330 67730-11-4 Glu-P-1  
331 67730-10-3 Glu-P-2  
332 111-30-8 Glutaraldehyde  
333 16568-02-8 Gyromitrin  
334 2784-94-3 HC Blue 1  
335 76-44-8 Heptachlor Y
336 1024-57-3 Heptachlor epoxide  
337 118-74-1 Hexachlorobenzene Y
338 87-68-3 Hexachlorobutadiene Y
339 608-73-1 Hexachlorocyclohexanes (mixture) including but not limited to:  
340 77-47-4 Hexachlorocyclopentadiene Y
341 67-72-1 Hexachloroethane Y
342 822-06-0 Hexamethylene-1,6-diisocyanate Y
343 680-31-9 Hexamethylphosphoramide Y
344 110-54-3 Hexane Y
345 302-01-2 Hydrazine Y
346 10034-93-2 Hydrazine sulfate  
347 7647-01-0 Hydrochloric acid Y
348 10035-10-6 Hydrogen bromide  
349 7664-39-3 Hydrogen fluoride Y
350 7783-06-4 Hydrogen sulfide  
351 123-31-9 Hydroquinone Y
352 193-39-5 Indeno[1,2,3-cd]pyrene Y
353 10043-66-0 Iodine-131 Y
354 13463-40-6 Iron pentacarbonyl  
355 78-59-1 Isophorone Y
356 78-79-5 Isoprene, except from vegetative emission sources  
357 67-63-0 Isopropyl alcohol  
358 98-82-8 Isopropylbenzene (cumene) Y
359 303-34-4 Lasiocarpine  
360 7439-92-1 Lead and compounds Y
361 18454-12-1 Lead chromate oxide  
362 108-31-6 Maleic anhydride Y
363 7439-96-5 Manganese and compounds Y
364 108-39-4 m-Cresol Y
365 148-82-3 Melphalan  
366 3223-07-2 Melphalan HCl  
367 7439-97-6 Mercury and compounds Y
368 67-56-1 Methanol Y
369 72-43-5 Methoxychlor Y
370 60-34-4 Methyl hydrazine Y
371 74-88-4 Methyl iodide (iodomethane) Y
372 108-10-1 Methyl isobutyl ketone (MIBK, hexone) Y
373 624-83-9 Methyl isocyanate Y
374 80-62-6 Methyl methacrylate Y
375 66-27-3 Methyl methanesulfonate  
376 1634-04-4 Methyl tert-butyl ether Y
377 101-68-8 Methylene diphenyl diisocyanate (MDI) Y
378 22967-92-6 Methylmercury  
379 56-04-2 Methylthiouracil  
380 90-94-8 Michler's ketone  
381 349 Mineral fiber emissions from facilities manufacturing or processing glass, rock, or slag fibers (or other mineral derived fibers) of average diameter 1 micrometer or less. Y
382 350 Mineral fibers (fine mineral fibers which are man-made, and are airborne particles of a respirable size greater than 5 microns in length, less than or equal to 3.5 microns in diameter, with a length to diameter ratio of 3:1)
383 2385-85-5 Mirex  
384 50-07-7 Mitomycin C  
385 1313-27-5 Molybdenum trioxide  
386 315-22-0 Monocrotaline  
387 108-38-3 m-Xylene Y
388 134-62-3 N,N-Diethyltoluamide (DEET)  
389 121-69-7 N,N-Dimethylaniline Y
390 531-82-8 N-[4-(5-Nitro-2-furyl)-2-thiazolyl]-acetamide  
391 91-20-3 Naphthalene Y
392 71-36-3 n-Butyl alcohol  
393 373-02-4 Nickel acetate  
394 7440-02-0 Nickel and compounds Y
395 3333-67-3 Nickel carbonate Y
396 12607-70-4 Nickel carbonate hydroxide Y
397 13463-39-3 Nickel carbonyl Y
398 7718-54-9 Nickel chloride Y
399 365 Nickel compounds, insoluble Y
400 368 Nickel compounds, soluble Y
401 12054-48-7 Nickel hydroxide Y
402 13478-00-7 Nickel nitrate hexahydrate Y
403 1313-99-1 Nickel oxide Y
404 12035-72-2 Nickel subsulfide Y
405 7786-81-4 Nickel sulfate Y
406 10101-97-0 Nickel sulfate hexahydrate Y
407 11113-75-0 Nickel sulfide Y
408 1271-28-9 Nickelocene Y
409 3570-75-0 Nifurthiazole  
410 7697-37-2 Nitric acid  
411 139-13-9 Nitrilotriacetic acid  
412 18662-53-8 Nitrilotriacetic acid, trisodium salt monohydrate  
413 98-95-3 Nitrobenzene Y
414 1836-75-5 Nitrofen  
415 59-87-0 Nitrofurazone  
416 302-70-5 Nitrogen mustard N-oxide  
417 70-25-7 N-Methyl-N-nitro-N-nitrosoguanidine  
418 1116-54-7 N-Nitrosodiethanolamine  
419 55-18-5 N-Nitrosodiethylamine  
420 62-75-9 N-Nitrosodimethylamine Y
421 924-16-3 N-Nitrosodi-n-butylamine  
422 86-30-6 N-Nitrosodiphenylamine  
423 621-64-7 N-Nitrosodipropylamine  
424 10595-95-6 N-Nitrosomethylethylamine  
425 59-89-2 N-Nitrosomorpholine Y
426 759-73-9 N-Nitroso-N-ethylurea  
427 684-93-5 N-Nitroso-N-methylurea Y
428 615-53-2 N-Nitroso-N-methylurethane  
429 16543-55-8 N-Nitrosonornicotine  
430 100-75-4 N-Nitrosopiperidine  
431 930-55-2 N-Nitrosopyrrolidine  
432 90-04-0 o-Anisidine Y
433 134-29-2 o-Anisidine hydrochloride  
434 95-48-7 o-Cresol Y
435 39001-02-0 Octachlorodibenzofuran (OCDF) Y
436 3268-87-9 Octachlorodibenzo-p-dioxin (OCDD) Y
437 8014-95-7 Oleum (fuming sulfuric acid)  
438 132-27-4 o-Phenylphenate, sodium  
439 97-56-3 ortho-Aminoazotoluene  
440 95-53-4 o-Toluidine Y
441 636-21-5 o-Toluidine hydrochloride  
442 95-47-6 o-Xylene Y
443 56-38-2 Parathion Y
444 189084-64-8 PBDE-100 [2,2’,4,4’,6-pentabromodiphenyl ether]  
445 182677-30-1 PBDE-138 [2,2’,3,4,4’,5’-hexabromodiphenyl ether]  
446 68631-49-2 PBDE-153 [2,2',4,4',5,5'-hexabromodiphenyl ether]  
447 207122-15-4 PBDE-154 [2,2’,4,4’,5,6’-hexabromodiphenyl ether]  
448 207122-16-5 PBDE-183 [2,2',3,4,4',5',6-heptabromodiphenyl ether]  
449 1163-19-5 PBDE-209 [decabromodiphenyl ether]  
450 5436-43-1 PBDE-47 [2,2',4,4'-tetrabromodiphenyl ether]  
451 60348-60-9 PBDE-99 [2,2’,4,4’,5-pentabromodiphenyl ether]  
452 32598-14-4 PCB 105 [2,3,3',4,4'-pentachlorobiphenyl] Y
453 74472-37-0 PCB 114 [2,3,4,4',5-pentachlorobiphenyl] Y
454 31508-00-6 PCB 118 [2,3',4,4',5-pentachlorobiphenyl] Y
455 65510-44-3 PCB 123 [2,3',4,4',5'-pentachlorobiphenyl] Y
456 57465-28-8 PCB 126 [3,3',4,4',5-pentachlorobiphenyl] Y
457 38380-08-4 PCB 156 [2,3,3',4,4',5-hexachlorobiphenyl] Y
458 69782-90-7 PCB 157 [2,3,3',4,4',5'-hexachlorobiphenyl] Y
459 52663-72-6 PCB 167 [2,3',4,4',5,5'-hexachlorobiphenyl] Y
460 32774-16-6 PCB 169 [3,3',4,4',5,5'-hexachlorobiphenyl] Y
461 37680-65-2 PCB 18 [2,2',5-trichlorobiphenyl] Y
462 39635-31-9 PCB 189 [2,3,3',4,4',5,5'-heptachlorobiphenyl] Y
463 32598-13-3 PCB 77 [3,3',4,4'-tetrachlorobiphenyl] Y
464 70362-50-4 PCB 81 [3,4,4',5-tetrachlorobiphenyl] Y
465 37680-73-2 PCB-101 [2,2',4,5,5'-pentachlorobiphenyl] Y
466 38380-07-3 PCB-128 [2,2',3,3',4,4'-hexachlorobiphenyl] Y
467 35065-28-2 PCB-138 [2,2',3,4,4',5'-hexachlorobiphenyl] Y
468 35065-27-1 PCB-153 [2,2',4,4',5,5'-hexachlorobiphenyl] Y
469 35065-30-6 PCB-170 [2,2',3,3',4,4',5-heptachlorobiphenyl] Y
470 35065-29-3 PCB-180 [2,2',3,4,4',5,5'-heptachlorobiphenyl] Y
471 52663-68-0 PCB-187 [2,2',3,4',5,5',6-heptachlorobiphenyl] Y
472 52663-78-2 PCB-195 [2,2',3,3',4,4',5,6-octachlorobiphenyl] Y
473 40186-72-9 PCB-206 [2,2',3,3',4,4',5,5',6-nonachlorobiphenyl] Y
474 2051-24-3 PCB-209 [decachlorobiphenyl] Y
475 7012-37-5 PCB-28 [2,4,4'-trichlorobiphenyl] Y
476 41464-39-5 PCB-44 [2,2',3,5'-tetrachlorobiphenyl] Y
477 35693-99-3 PCB-52 [2,2',5,5'-tetrachlorobiphenyl] Y
478 32598-10-0 PCB-66 [2,3',4,4'-tetrachlorobiphenyl] Y
479 34883-43-7 PCB-8 [2,4'-dichlorobiphenyl] Y
480 106-47-8 p-Chloroaniline  
481 95-69-2 p-Chloro-o-toluidine  
482 120-71-8 p-Cresidine  
483 106-44-5 p-Cresol Y
484 106-46-7 p-Dichlorobenzene (1,4-dichlorobenzene) Y
485 32534-81-9 Pentabromodiphenyl ether  
486 82-68-8 Pentachloronitrobenzene (quintobenzene) Y
487 87-86-5 Pentachlorophenol Y
488 79-21-0 Peracetic acid  
489 489 Perfluorinated compounds (PFCs)  
490 1763-23-1 Perfluorooctanesulfonic acid (PFOS)  
491 335-67-1 Perfluorooctanoic acid (PFOA)  
492 198-55-0 Perylene Y
493 62-44-2 Phenacetin  
494 85-01-8 Phenanthrene Y
495 94-78-0 Phenazopyridine  
496 136-40-3 Phenazopyridine hydrochloride  
497 3546-10-9 Phenesterin  
498 50-06-6 Phenobarbital  
499 108-95-2 Phenol Y
500 59-96-1 Phenoxybenzamine  
501 63-92-3 Phenoxybenzamine hydrochloride  
502 75-44-5 Phosgene Y
503 7803-51-2 Phosphine Y
504 7664-38-2 Phosphoric acid  
505 504 Phosphorus and compounds Y
506 10025-87-3 Phosphorus oxychloride  
507 10026-13-8 Phosphorus pentachloride  
508 1314-56-3 Phosphorus pentoxide  
509 7719-12-2 Phosphorus trichloride  
510 12185-10-3 Phosphorus, white  
511 518 Phthalates  
512 85-44-9 Phthalic anhydride Y
513 156-10-5 p-Nitrosodiphenylamine  
514 447 Polybrominated diphenyl ethers (PBDEs)  
515 1336-36-3 Polychlorinated biphenyls (PCBs) Y
516 645 Polychlorinated biphenyls (PCBs) TEQ  
517 646 Polychlorinated dibenzo-p-dioxins (PCDDs) & dibenzofurans (PCDFs) TEQ Y
518 432 Polycyclic aromatic hydrocarbon derivatives [PAH-Derivatives] Y
519 401 Polycyclic aromatic hydrocarbons (PAHs) Y
520 3564-09-8 Ponceau 3R  
521 3761-53-3 Ponceau MX  
522 7758-01-2 Potassium bromate  
523 106-50-3 p-Phenylenediamine Y
524 671-16-9 Procarbazine  
525 366-70-1 Procarbazine hydrochloride  
526 123-38-6 Propionaldehyde Y
527 114-26-1 Propoxur (Baygon) Y
528 115-07-1 Propylene  
529 6423-43-4 Propylene glycol dinitrate  
530 107-98-2 Propylene glycol monomethyl ether  
531 108-65-6 Propylene glycol monomethyl ether acetate  
532 75-56-9 Propylene oxide Y
533 51-52-5 Propylthiouracil  
534 106-42-3 p-Xylene Y
535 129-00-0 Pyrene Y
536 110-86-1 Pyridine  
537 91-22-5 Quinoline Y
538 106-51-4 Quinone Y
539 571 Radon and its decay products Y
540 572 Refractory ceramic fibers  
541 50-55-5 Reserpine  
542 353 Rockwool Y
543 94-59-7 Safrole  
544 78-92-2 sec-Butyl alcohol  
545 7783-07-5 Selenide, hydrogen  
546 7782-49-2 Selenium and compounds Y
547 7446-34-6 Selenium sulfide  
548 7631-86-9 Silica, crystalline (respirable)  
549 7440-22-4 Silver and compounds  
550 354 Slagwool Y
551 1310-73-2 Sodium hydroxide  
552 10048-13-2 Sterigmatocystin  
553 18883-66-4 Streptozotocin  
554 100-42-5 Styrene Y
555 96-09-3 Styrene oxide Y
556 95-06-7 Sulfallate  
557 505-60-2 Sulfur mustard  
558 7446-11-9 Sulfur trioxide  
559 7664-93-9 Sulfuric acid  
560 358 Talc containing asbestiform fibers  
561 540-88-5 t-Butyl acetate Y
562 100-21-0 Terephthalic acid  
563 75-65-0 tert-Butyl alcohol  
564 40088-47-9 Tetrabromodiphenyl ether  
565 127-18-4 Tetrachloroethene (perchloroethylene) Y
566 7440-28-0 Thallium and compounds  
567 62-55-5 Thioacetamide  
568 62-56-6 Thiourea  
569 7550-45-0 Titanium tetrachloride Y
570 108-88-3 Toluene Y
571 26471-62-5 Toluene diisocyanates (2,4- and 2,6-)  
572 584-84-9 Toluene-2,4-diisocyanate Y
573 91-08-7 Toluene-2,6-diisocyanate  
574 38998-75-3 Total heptachlorodibenzofuran  
575 37871-00-4 Total heptachlorodibenzo-p-dioxin  
576 55684-94-1 Total hexachlorodibenzofuran  
577 34465-46-8 Total hexachlorodibenzo-p-dioxin  
578 30402-15-4 Total pentachlorodibenzofuran  
579 36088-22-9 Total pentachlorodibenzo-p-dioxin  
580 55722-27-5 Total tetrachlorodibenzofuran  
581 41903-57-5 Total tetrachlorodibenzo-p-dioxin  
582 8001-35-2 Toxaphene (polychlorinated camphenes) Y
583 156-60-5 trans-1,2-Dichloroethene  
584 55738-54-0 trans-2[(Dimethylamino)-methylimino]-5-[2-(5-nitro-2-furyl)-vinyl]-1,3,4-oxadiazole
585 39765-80-5 trans-Nonachlor  
586 126-73-8 Tributyl phosphate  
587 79-01-6 Trichloroethene (TCE, trichloroethylene) Y
588 75-69-4 Trichlorofluoromethane (Freon 11)  
589 78-40-0 Triethyl phosphate  
590 121-44-8 Triethylamine Y
591 112-49-2 Triethylene glycol dimethyl ether Y
592 1582-09-8 Trifluralin Y
593 512-56-1 Trimethyl phosphate  
594 78-30-8 Triorthocresyl phosphate  
595 115-86-6 Triphenyl phosphate  
596 101-02-0 Triphenyl phosphite  
597 52-24-4 tris-(1-Aziridinyl)phosphine sulfide  
598 126-72-7 tris(2,3-Dibromopropyl)phosphate  
599 62450-06-0 Tryptophan-P-1  
600 62450-07-1 Tryptophan-P-2  
601 51-79-6 Urethane (ethyl carbamate) Y
602 7440-62-2 Vanadium (fume or dust)  
603 1314-62-1 Vanadium pentoxide  
604 108-05-4 Vinyl acetate Y
605 593-60-2 Vinyl bromide Y
606 75-01-4 Vinyl chloride Y
607 75-02-5 Vinyl fluoride  
608 75-35-4 Vinylidene chloride Y
609 1330-20-7 Xylene (mixture), including m-xylene, o-xylene, p-xylene Y
610 7440-66-6 Zinc and compounds  
611 1314-13-2 Zinc oxide  

DEQ Pollutant List