Notes on Draft Table 30:

Proposed changes to the Toxic Substances rule reflect the movement of the effective aquatic life criteria from Tables 20, 33A, and 33B into a new aquatic life criteria table, Table 30. As a result of this movement, Tables 20, 33A, and 33B are no longer needed and are proposed to be deleted. Table 30 contains criteria that either DEQ anticipates EPA will approve, or reflects Table 20 criteria values, which consist of criteria that have already been approved by EPA, in those cases where DEQ anticipates EPA is likely to disapprove pollutant criteria from Table 33A or Table 33B (When a standard submitted to EPA by the state is disapproved by EPA, the previously effective standard remains in effect for federal Clean Water Act purposes.). DEQ anticipates disapproval of several criteria based on either the National Marine Fishery Service’s biological opinion or other past omissions or errors. EPA action is expected by Jan. 31, 2013. The criteria in black or dark blue type (i.e. not redline strikethrough) in Table 30 are effective immediately following EPA action. These criteria do not need further Environmental Quality Commission (EQC) adoption or EPA approval. Conversely, the redline/strikethrough proposed changes to Table 30 reflect corrections or clarifications to criteria, footnotes, or introductory language (originally associated with or contained in Tables 20, 33A, or 33B) to correct anticipated EPA disapproval, or show changes to provide further clarifications on the toxics tables or rule language. These changes must be adopted by the EQC and approved by EPA before they become effective. The language portrayed in grey is explanatory in nature, intended to help the reader understand changes and from which table the criteria originated from. Comments in blue also provide information to the reader. Unlike previous revisions DEQ has made to its criteria, criteria tables can now be attached to the Oregon Administrative Rules in the Secretary of State Bulletin; therefore, proposed changes found at the end of the Toxic Substances rule state that Tables 30 and 40 will be attached as PDF documents.

TABLE 30: Aquatic Life Criteria for Toxic Pollutants

Effective [EPA Adoption XXXXXX]

Aquatic Life Criteria Summary

The concentration for each compound listed in Table 303A is a criterion not to be exceeded in waters of the state in order to protect aquatic life. All values are expressed as micrograms per liter (µg/L) except where noted. Compounds are listed in alphabetical order with the corresponding EPA number (from National Recommended Water Quality Criteria: 2002, EPA-822-R-02-047), the Chemical Abstract Service (CAS) number, whether there is a human health criterion for the pollutant (i.e. “y”= yes, “n” = no), and the associated.aquatic life freshwater and saltwater acute and chronic criteria, aquatic life saltwater acute and chronic criteria . The acute criteria refer to the average concentration for one (1) hour and the chronic criteria refer to the average concentration for 96 hours (4 days), and that these criteria should not be exceeded more than once every three (3) years. Footnote A associated with eleven pesticide pollutants in Table 30 describes the exception to the frequency and duration stated above. Italicized pollutants represent non-priority pollutants.

[Note on edits above: Paragraph above originated from Table 33A. Footnote “O” in Table 33A is associated with eleven pesticides. EPA will likely have concerns that the frequency and duration associated with the acute and chronic criteria in the introductory language in Table 33A is contradictory to footnote “O”. DEQ believes the introductory language in Table 33A with regards to the frequency and duration of a criterion was general in nature and that Footnote “O” supercedes this general statement where applicable. It has been DEQ’s intention to implement the pesticide criteria associated with this footnote in the same manner that EPA intended in the 1980 guidance referenced in the footnote. Therefore, the acute criteria values in Table 33A associated with this footnote have been applied as instantaneous maximums and are not to be exceeded. Thus, the acute criteria values in Table 33A should only be divided by two where there is sufficient data to conduct averaging over a one hour period. In addition, the chronic criteria represent values not to be exceeded based on a 24-hour average, rather than over a 96-hour period which generally applies to the other aquatic life criteria. DEQ is proposing to add clarifying language to the introductory language above to strengthen correct implementation. This language, or similar, should address EPA’s disapproval of the eleven pesticides associated with Footnote A (i.e. Footnote O in Table 33A)].

The other revisions to the introductory paragraph provide clarifications or descriptions of Table 30.

	Pollutant	CAS No.		Human Health Criterion	Freshwater (µg/L)		Saltwater (µg/L)
					Acute Criterion (CMC)	Chronic Criterion (CCC)	Acute Criterion (CMC)	Chronic Criterion (CCC)
1	Aldrin	309002		y	3 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	--	1.3 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	--
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.
2	Alkalinity			n	--	20,000 B [From Table 33A]	--	--
B Criterion shown is the minimum (i.e. CCC in water should not be below this value in order to protect aquatic life).
3	Aluminum [will be deleted]	7429905			Table 33B EPA will likely disapprove—no Table 20 replacement criteria. Could rely on narrative in the interim.	Table 33B EPA will likely disapprove-- no Table 20 replacement criteria. Could rely on narrative in the interim.	--	--
3	Ammonia	7664417		n	[From Table 20] Criteria are pH and temperature dependent-- See document USEPA January 1985 (Fresh Water).   EPA will likely disapprove Table 33B Criteria per NMFS BiOp—revert back to Table 20 criteria based on footnote above [include equations at end of table?]		[From Table 33A“D” Footnote] Ammonia criteria for saltwater may depend on pH and temperature. Values for saltwater criteria (total ammonia) can be calculated from the tables specified in Ambient Water Quality Criteria for Ammonia (Saltwater)--1989 (EPA 440/5-88-004; http://www.epa.gov/ost/pc/ambientwqc/ammoniasalt1989.pdf. [include equations at end of table?]
4	Arsenic (tri)			n	340 C, D [From 2004 Table 33B]   Criterion inadvertently removed from subsequent adoptions of Table 33B, therefore values from 2004 EQC adopted Table 33B reinstated here. [Revert back to Table 20 criterion of 360 total recov. until EPA re-adopts 340 criterion]	150 C, D [From 2004 Table 33B]   Criterion inadvertently removed from subsequent adoptions of Table 33B, therefore values from 2004 EQC adopted Table 33B reinstated here [Revert back to Table 20 criterion of 190 total recov. until EPA re-adopts 150 criterion]	69 C, D [From 2004 Table 33B]   Criterion inadvertently removed from subsequent adoptions of Table 33B, therefore values from 2004 EQC adopted Table 33B reinstated here [Revert back to Table 20 criterion of 69 total recov. until EPA re-adopts 69 criterion]	36 C, D [From 2004 Table 33B]   Criterion inadvertently removed from subsequent adoptions of Table 33B, therefore values from 2004 EQC adopted Table 33B reinstated here [Revert back to Table 20 criterion of 36 total recov. until EPA re-adopts 36 criterion]
C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum) [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum.] D Criterion is applied as total arsenic (i.e. arsenic (III) + arsenic (V)).
5	BHC Gamma (Lindane)	58899		y	0.95 [from Table 33A]	0.08 [from Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.16 A [from Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	--
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.
6	Cadmium	7440439		n	3.9 E [from Table 20] EPA will likely disapprove Table 33B criterion per NMFS BiOp —revert back to Table 20 criterion (i.e. still hardness dependent, but expressed as total)	1.1 C, F [from Table 33B]	40 C [From Table 33B]	8.8 C [From Table 33B]
C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum). [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum.] E Hardness Dependent Criteria (100 mg/L used): See Hardness Dependent Formula at bottom of table F The freshwater criterion for this metal is expressed as a function of hardness (mg/L) in the water column. For more information, see expanded Footnote F at bottom of Table 30.
7	Chlordane	57749		n	2.4 A [From 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0043 A [From 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.09 A [From 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.004 A [From 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.
8	Chloride	16887006		n	860,000 [From Table 33A]	230,000 [From Table 33A]	--	--
9	Chlorine	7782505		n	19 [From Table 33A]	11 [From Table 33A]	13 [From Table 33A]	7.5 [From Table 33A]
10	Chlorpyrifos	2921882		n	0.083 [From Table 33A]	0.041 [From Table 33A]	0.011 [From Table 33A]	0.0056 [From Table 33A]
11	Chromium (Hex)	18540299		n	16 C [From Table 33B]	11 C [From Table 33B]	1100 C [From 2004 Table 33B] inadvertently removed from subsequent adoptions of Table 33B, therefore values from 2004 EQC adopted Table 33B reinstated here [Revert back to Table 20 criterion of 1100 total recov. until EPA re-adopts 1100 dissolved criterion]	50 C [From 2004 Table 33B] Criterion inadvertently removed from subsequent adoptions of Table 33B, therefore values from 2004 EQC adopted Table 33B reinstated here [Revert back to Table 20 criterion of 50 total recov. until EPA re-adopts 50 dissolved criterion]
C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum). [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum. Note: See Conversion Table chromium VI factors under Footnote F at bottom of table to convert total recoverable results to dissolved results.
12	Chromium (Tri)			n	C, F [From Table 33B]	C, F [From Table 33B]	--	--
C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum) [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum. F The freshwater criterion for this metal is expressed as a function of hardness (mg/L) in the water column. For more information, see expanded Footnote F at bottom of Table 30.
13	Copper	7440508		n	18 E [from Table 20] EPA will likely disapprove Table 33B criterion per NMFS BiOp —revert back to Table 20 criterion (i.e. still hardness dependent, but expressed as total)	12 E [from Table 20] EPA will likely disapprove Table 33B criterion per NMFS BiOp —revert back to Table 20 criterion (i.e. still hardness dependent, but expressed as total)	4.8 C [From Table 33B]	3.1 C [From Table 33B]
E Hardness Dependent Criteria (100 mg/L used): See Hardness Dependent Formula at bottom of table C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum) [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum.]
14	Cyanide	57125		y	22 J [From Table 33A]	5.2 J [From Table 33A]	1 J [From Table 33A]	1 J [From Table 33A]
J This criterion is expressed as µg free cyanide (CN)/L.
15	DDT 4,4'	50293		y	1.1 A , G [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.001 A , G [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.13 A , G [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.001 A , G [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.   G This criterion applies to DDT and its metabolites (i.e. the total concentration of DDT and its metabolites should not exceed this value).
16	Demeton	8065483		n	--	0.1 [From Table 33B]	--	0.1 [From Table 33B]
17	Dieldrin	60571		y	0.24 [From Table 33A]	0.056 [From Table 33B]	0.71 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0019 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.
18	Endosulfan	115297		n	0.22 A , H P [From Table 33A] EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.056 A , H P [From Table 33A] EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.034 A , H P [From Table 33A] EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0087 A, H P [From Table 33A] EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.   H This value is based on the criterion published in Ambient Water Quality Criteria for Endosulfan (EPA 440/5-80-046) and should be applied as the sum of alpha- and beta-endosulfan.   P Criterion shown is the minimum (i.e. CCC in water should not be below this value in order to protect aquatic life). [Incorrect footnote per EPA--associated w/alkalinity criterion. Replace with Footnote A above]
19	Endosulfan Alpha	959988		y	0.22 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.056 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.034 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0087 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.
20	Endosulfan Beta	33213659		y	0.22 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.056 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.034 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0087 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.
21	Endrin	72208		y	0.086 [From Table 33A]	0.036 [From Table 33B]	0.037 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0023 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.
22	Guthion	86500		n	--	0.01 [From Table 33A]	--	0.01 [From Table 33A]
23	Heptachlor	76448		y	0.52 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0038 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.053 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0036 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—Revert back to Table 20 which is the same as 33A). Footnote A clarifying lang. in intro to Table 30 will provide remedy
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.
24	Heptachlor Epoxide	1024573		y	0.52 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0038 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.053 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy	0.0036 A [From Table 33A]   EPA will likely disapprove Table 33A criterion—No Table 20 replacement criterion, but could rely on narrative. Footnote A clarifying lang. in intro to Table 30 will provide remedy
A This criterion is based on EPA recommendations issued in 1980 that were derived using guidelines that differed from EPA's 1985 Guidelines for minimum data requirements and derivation procedures. The CMC is expressed as an instantaneous maximum value not to be exceeded and the CCC is expressed as a maximum daily value not to be exceeded.. If assessment is to be done using an averaging period for CMC (i.e., a one hour average not to be exceeded more than once every three years), the CMC values given should be divided by 2 to obtain a value that is more comparable to a CMC derived using the 1985 Guidelines.
25	Iron	7439896		n	--	1000 [From Table 33A]	--	--
26	Lead	7439921		n	C , F [From Table 33B]	C , F [From Table 33B]	210 C [From Table 33B]	8.1 C [From Table 33B]
C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum) [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum.   F The freshwater criterion for this metal is expressed as a function of hardness (mg/L) in the water column. For more information, see expanded Footnote F at bottom of Table 30.
27	Malathion	121755		n	--	0.1 [From Table 33A]	--	0.1 [From Table 33A]
28	Mercury	7439976		n	2.4 [From Table 33A]	0.012 [From Table 33A]	2.1 [From Table 33A]	0.025 [From Table 33A]
29	Methoxychlor	72435		y	--	0.03 [From Table 33A]	--	0.03 [From Table 33A]
30	Mirex	2385855		n	--	0.001 [From Table 33A]	--	0.001 [From Table 33A]
31	Nickel	7440020		y	C , F [From Table 33B]	C , F [From Table 33B]	74 C [From Table 33B]	8.2 C [From Table 33B]
C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum) [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum.   F The freshwater criterion for this metal is expressed as a function of hardness (mg/L) in the water column. For more information, see expanded Footnote F at bottom of Table 30.
32	Parathion		56382	n	0.065 [From Table 33A]	0.013 [From Table 33A]	--	--
33	Pentachlorophenol		87865	y	H [From Table 33A]	H [From Table 33B]	13 [From Table 33A]	7.9 [From Table 33A]
H Freshwater aquatic life values for pentachlorophenol are expressed as a function of pH, and are calculated as follows: CMC=(exp(1.005(pH)-4.869); CCC=exp(1.005(pH)-5.134).
34	Phosphorus Elemental	7723140		n	--	--	--	0.1 [From Table 33A]
35	Polychlorinated Biphenyls (PCBs)	NA		y	2 K [From Table 33A]	0.014 K [From Table 33A]	10 K [From Table 33A]	0.03 K [From Table 33A]
K This criterion applies to total PCBs (e.g. determined as Aroclors or congeners)the sum of all congener or all isomer or homolog or Arochlor analyses [Note: Propose to revise footnote parenthetical to align with PCB footnote for human health criteria)
36	Selenium	7782492		y	C , L [From Table 33B] EPA will likely disapprove Table 33B criterion— Need to add the Conversion Factor to equation to convert total recoverable results to dissolved results [Revert back to Table 20 criterion of 260 total recov.	5 4.6 C [From Table 33B] EPA will likely disapprove Table 33B criterion— Criterion is not expressed as dissolved. [Revert back to Table 20 criterion of 35 total recov.	290 C [From Table 33B]	71 C [From Table 33B]
C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum) [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum. Note: See Conversion Table selenium factors under Footnote F at bottom of table to convert total recoverable results to dissolved results.   L The CMC=(1/[(f1/CMC1)+(f2/CMC2)]µg/L) * CF where f1 and f2 are the fractions of total selenium that are treated as selenite and selenate, respectively,and CMC1 and CMC2 are 185.9 μg/L and 12.82 μg/L, respectively. [Note: Added CF (conversion factor) to FW acute footnote to clarify the criterion is expressed as dissolved, although the dissolved footnote would direct the user to convert to dissolved regardless. Note added as well to direct user where to access the Se CFs.]
37	Silver	7440224		n	C , F P [From Table 33B]	0.10 C [From Table 33B]	1.9 C P [From Table 33B]	--
C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum) [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum.   F The freshwater acute criterion for this metal is expressed as a function of hardness (mg/L) in the water column. For more information, see expanded Footnote F at bottom of Table 30.   P Criterion shown is the minimum (i.e. CCC in water should not be below this value in order to protect aquatic life). [Remove Footnote P per EPA which is associated w/alkalinity criterion]
38	Sulfide Hydrogen Sulfide	7783064		n	--	2 [From Table 33A]	--	2 [From Table 33A]
39	Toxaphene	8001352		y	0.73 [From Table 33A]	0.0002 [From Table 33A]	0.21 [From Table 33A]	0.0002 [From Table 33A]
40	Tributyltin (TBT)	688733		n	0.46 [From Table 33B]	0.063 [From Table 33B]	0.37 [From Table 33B]	0.01 [From Table 33B]
41	Zinc	7440666		y	C , F [From Table 33B]	C , F [From Table 33B]	90 C [From Table 33B]	81 C [From Table 33B]
C Freshwater and saltwater criteria Criterion for metals are is expressed in terms of “dissolved” concentrations in the water column., except where otherwise noted (e.g. aluminum) [Changed footnote from Table 33B footnote to account for a few exceptions and because there will no longer be criteria for aluminum.   F The freshwater criterion for this metal is expressed as a function of hardness (mg/L) in the water column. For more information, see expanded Footnote F at bottom of Table 30.

Footnote E: Hardness Equations for Cadmium Freshwater Acute and Copper Freshwater Criteria

The freshwater criterion for these metals are expressed as total recoverable and as a function of hardness (mg/L) in the water column. Criteria values for hardness may be calculated from the following formulae (CMC refers to Acute Criteria; CCC refers to Chronic Criteria):

CMC = (exp(m_A*[ln(hardness)] + b_A))

CCC = (exp(m_C*[ln(hardness)] + b_C))

[Proposed strikethrough to original footnote in Table 20. Cadmium freshwater acute and copper freshwater acute and chronic dissolved criteria will likely be disapproved by EPA, so criteria revert back to Table 20 criteria based on total recoverable. Therefore, conversion factor should be deleted. Propose that we also remove the pollutants below from this chart to avoid confusion, since the other metals listed below are more accurately associated with footnote F below and some of the hardness factor values have been updated since Table 20 was approved.]

Footnote F: Hardness Equations for Freshwater Criteria and Conversion Factor Table

The freshwater criterion for this metal is expressed as a function of hardness (mg/L) in the water column. Criteria values for hardness may be calculated from the following formulae (CMC refers to Acute Criteria; CCC refers to Chronic Criteria):

         CMC = (exp(m_A*[ln(hardness)] + b_A))*CF

         CCC = (exp(m_C*[ln(hardness)] + b_C))*CF

where “CF” is the conversion factor used for converting a metal criterion expressed as the total recoverable fraction in the water column to a criterion expressed as the dissolved fraction in the water column.

 Conversion factors (CF) for dissolved metals (t The total recoverable metals criteria that are expressed as an equation must be were multiplied by the appropriate conversion factors shown below to calculate the dissolved metals criteria): [Revising to indicate that in many cases, the metals criteria in Table 30 were not calculated using default values, so conversion factors must be applied if results are in total recoverable form]

Conversion Factor (CF) Table for Dissolved Metals

[Note: Although Arsenic is footnoted as “dissolved”, the conversion factors of “1” above essentially assume 100% of total recoverable results are dissolved. Also footnote indicates the criteria are applied as total As—i.e. the sum of As III and V.]