A	B	C	D
1	Factsheet Attachment
2	Calculating the Control Efficiency for 3-Sided Enclosure for Various Activities
3	NOTE: This calculation sheet is ONLY for Filterable PM
5	Step 1:
6	Enter Your Particle Size Distribution in D7, D8, and D9.
7	The Reference for you Particle Size Distribution is:
8	Pollutants	Grain Size Distribution [1]	Control Efficiency for Grain [2]	Your Particle Size Distribution: AP-42 Section 13.2.4.3 (based on particle size multipliers used in the drop point equation)
9	PM	1.00	70%	100%
10	PM10	0.56	63%	47%
11	PM2.5	0.10	49%	7%
14	Step 2 - Conversion of 3-Sided Enclosure for Grain to Metal Alloy Handling
15	Pollutants	Grain Distribution Fraction	Fraction Removal	Control Efficiency for Your Activity
16	PM - PM10	44%	79%	71%
17	PM10-PM2.5	46%	66%	63%
18	PM2.5	10%	49%	49%
19	[1] Particle size distribution from AP-42 , Table 9.9.1-1 "Headhouse and grain handling" (03/03)
20	[2] Capture and control efficiency based on the NDEQ default control efficiency for operation within a 3-sided enclosure for grain receiving/handling. Control Efficiency (CE) varies based on the type of device/equipment utilized. The CE is modified to account for the different size distribution for drop point emissions vs. grain handling.

	A	B	C	D	E
1	Capture & Control Efficiencies for use in New Grain Elevators and Dry Fertilizer Facilities
2
4	"Active" Control Device	Capture Efficiency (%)			Equation Set #
5		PM	PM10	PM2.5
6	Baghouse or Cyclone capturing emissions from processes inside a building with 4-sided enclosure	100	100	100	1
7	...with 3-sided enclosure	99	99	99	1
8	...with 2-sided enclosure	95	95	95	1
10	"Inactive" control or work practice	Control Efficiency (%)
11	Enclosed Internal Handling w/ Baghouse	95	95	95	2
12	Oil Suppression System (excludes receiving) 1.5 gallons/1000 bushel [1]	70	70	70	2
13	Oil Suppression System (excludes receiving) 0.7 gallons/1000 bushel [1]	50	50	50	2
14	4-sided Enclosure Grain Receiving	90	81	63	2
15	3-sided Enclosure Grain Receiving	70	63	49	2
16	2-sided Enclosure Grain Receiving	50	45	35	2
17	dust sock (unloading)	50	50	50	2
19	Equation Set 1:
20	(Emissions) X (1 - Capture Efficiency) = (Uncaptured Emissions)
21	(Emissions) X (Capture Efficiency) X (1 - Control Efficiency[2]) = (Controlled Emissions)
22	(Uncaptured Emissions) + (Controlled Emissions) = Total Emissions
25	Equation Set 2:
26	(Emissions) X ( 1 - Control Efficiency) = Total Emissions
28	If more than one control or work practice is used in the Equation Set #2, use the following equation: Combined Control Efficiency = (Control Efficiency 1) X (Control Efficiency 2)
29
31	[1] The oiler suppression control efficiency can be applied to all operations downstream from the point of application. However, the oil can not properly mix with the grain during grain receiving so the oiling suppression control efficiency can not be used.
32
33	[2] Use mfg guarantees, performance specifications, or other documented control efficiencies such as AP-42 Appendix B.2 (ex. baghouse at 99.5% for PM, 99.5% for PM10, and 99% for PM2.5).
34