TITLE 35: ENVIRONMENTAL PROTECTION

SUBPART B: GENERAL USE WATER QUALITY STANDARDS

ILLINOIS REGISTER

POLLUTION CONTROL BOARD

NOTICE OF PROPOSED AMENDMENTS

TITLE 35: ENVIRONMENTAL PROTECTION

SUBTITLE C: WATER POLLUTION

CHAPTER I: POLLUTION CONTROL BOARD

PART 302

WATER QUALITY STANDARDS

SUBPART A: GENERAL WATER QUALITY PROVISIONS

Section

302.100	Definitions
302.101	Scope and Applicability
302.102	Allowed Mixing, Mixing Zones and ZIDS
302.103	Stream Flows
302.104	Main River Temperatures
302.105	Nondegradation


SUBPART B: GENERAL USE WATER QUALITY STANDARDS

Section

302.201	Scope and Applicability
302.202	Purpose
302.203	Offensive Conditions
302.204	pH
302.205	Phosphorus
302.206	Dissolved Oxygen
302.207	Radioactivity
302.208	Numeric Standards for Chemical Constituents
302.209	Fecal Coliform
302.210	Other Toxic Substances
302.211	Temperature
302.212	Ammonia Nitrogen and Un-ionized Ammonia
302.213	Effluent Modified Waters (Ammonia)


SUBPART C: PUBLIC AND FOOD PROCESSING WATER SUPPLY STANDARDS

Section

302.301	Scope and Applicability
302.302	Algicide Permits
302.303	Finished Water Standards
302.304	Chemical Constituents
302.305	Other Contaminants
302.306	Fecal Coliform


SUBPART D: SECONDARY CONTACT AND INDIGENOUS AQUATIC LIFE STANDARDS

Section

302.401	Scope and Applicability
302.402	Purpose
302.403	Unnatural Sludge
302.404	pH
302.405	Dissolved Oxygen
302.406	Fecal Coliform (Repealed)
302.407	Chemical Constituents
302.408	Temperature
302.409	Cyanide
302.410	Substances Toxic to Aquatic Life


SUBPART E: LAKE MICHIGAN BASIN WATER QUALITY STANDARDS

Section

302.501	Scope, Applicability, and Definitions
302.502	Dissolved Oxygen
302.503	pH
302.504	Chemical Constituents
302.505	Fecal Coliform
302.506	Temperature
302.507	Thermal Standards for Existing Sources on January 1, 1971
302.508	Thermal Standards for Sources Under Construction But Not in Operation on January 1, 1971
302.509	Other Sources
302.510	Incorporations by Reference
302.515	Offensive Conditions
302.520	Regulation and Designation of Bioaccumulative Chemicals of Concern (BCCs)
302.521	Supplemental Antidegradation Provisions for BCCs
302.525	Radioactivity
302.530	Supplemental Mixing Provisions for Bioaccumulative Chemicals of Concern (BCCs)
302.535	Ammonia Nitrogen
302.540	Other Toxic Substances
302.545	Data Requirements
302.550	Analytical Testing
302.553	Determining the Lake Michigan Aquatic Toxicity Criteria or Values - General Procedures
302.555	Determining the Tier I Lake Michigan Acute Aquatic Toxicity Criterion (LMAATC): Independent of Water Chemistry
302.560	Determining the Tier I Lake Michigan Basin Acute Aquatic Life Toxicity Criterion (LMAATC): Dependent on Water Chemistry
302.563	Determining the Tier II Lake Michigan Basin Acute Aquatic Life Toxicity Value (LMAATV)
302.565	Determining the Lake Michigan Basin Chronic Aquatic Life Toxicity Criterion (LMCATC) or the Lake Michigan Basin Chronic Aquatic Life Toxicity Value (LMCATV)
302.570	Procedures for Deriving Bioaccumulation Factors for the Lake Michigan Basin
302.575	Procedures for Deriving Tier I Water Quality Criteria in the Lake Michigan Basin to Protect Wildlife
302.580	Procedures for Deriving Water Quality Criteria and Values in the Lake Michigan Basin to Protect Human Health - General
302.585	Procedures for Determining the Lake Michigan Basin Human Health Threshold Criterion (LMHHTC) and the Lake Michigan Basin Human Health Threshold Value (LMHHTV)
302.590	Procedures for Determining the Lake Michigan Basin Human Health Nonthreshold Criterion (LMHHNC) or the Lake Michigan Basin Human Health Nonthreshold Value (LMHHNV)
302.595	Listing of Bioaccumulative Chemicals of Concern, Derived Criteria and Values


SUBPART F: PROCEDURES FOR DETERMINING WATER QUALITY CRITERIA

Section

302.601	Scope and Applicability
302.603	Definitions
302.604	Mathematical Abbreviations
302.606	Data Requirements
302.612	Determining the Acute Aquatic Toxicity Criterion for an Individual Substance - General Procedures
302.615	Determining the Acute Aquatic Toxicity Criterion - Toxicity Independent of Water Chemistry
302.618	Determining the Acute Aquatic Toxicity Criterion - Toxicity Dependent on Water Chemistry
302.621	Determining the Acute Aquatic Toxicity Criterion - Procedures for Combinations of Substances
302.627	Determining the Chronic Aquatic Toxicity Criterion for an Individual Substance - General Procedures
302.630	Determining the Chronic Aquatic Toxicity Criterion - Procedure for Combination of Substances
302.633	The Wild and Domestic Animal Protection Criterion
302.642	The Human Threshold Criterion
302.645	Determining the Acceptable Daily Intake
302.648	Determining the Human Threshold Criterion
302.651	The Human Nonthreshold Criterion
302.654	Determining the Risk Associated Intake
302.657	Determining the Human Nonthreshold Criterion
302.658	Stream Flow for Application of Human Nonthreshold Criterion
302.660	Bioconcentration Factor
302.663	Determination of Bioconcentration Factor
302.666	Utilizing the Bioconcentration Factor
302.669	Listing of Derived Criteria

APPENDIX A	References to Previous Rules
APPENDIX B	Sources of Codified Sections

AUTHORITY: Implementing Section 13 and authorized by Sections 11(b) and 27 of the Environmental Protection Act [415 ILCS 5/13, 11(b), and 27]

SOURCE: Filed with the Secretary of State January 1, 1978; amended at 2 Ill. Reg. 44, p. 151, effective November 2, 1978; amended at 3 Ill. Reg. 20, p. 95, effective May 17, 1979; amended at 3 Ill. Reg. 25, p. 190, effective June 21, 1979; codified at 6 Ill. Reg. 7818; amended at 6 Ill. Reg. 11161, effective September 7, 1982; amended at 6 Ill. Reg. 13750, effective October 26, 1982; amended at 8 Ill. Reg. 1629, effective January 18, 1984; peremptory amendments at 10 Ill. Reg. 461, effective December 23, 1985; amended at R87-27 at 12 Ill. Reg. 9911, effective May 27, 1988; amended at R85-29 at 12 Ill. Reg. 12082, effective July 11, 1988; amended in R88-1 at 13 Ill. Reg. 5998, effective April 18, 1989; amended in R88-21(A) at 14 Ill. Reg. 2899, effective February 13, 1990; amended in R88-21(B) at 14 Ill. Reg. 11974, effective July 9, 1990; amended in R94-1(A) at 20 Ill. Reg. 7682, effective May 24, 1996; amended in R94-1(B) at 20 Ill. Reg. 370, effective December 23, 1996; expedited correction at 20 Ill. Reg. 6273, effective December 23, 1996; amended in R97-25 at 21 Ill. Reg. 1356, effective December 24, 1997; amended in R99-8 at 23 Ill. Reg. 11249, effective August 26, 1999; amended in __________ at __________ Ill. Reg. _______________, effective ________________, 2002.

SUBPART B: GENERAL USE WATER QUALITY STANDARDS

Section 302.208 Numeric Standards for Chemical Constituents

a)
The acute standard (AS) for the chemical constituents listed in subsection (e) shall not be exceeded at any time except as provided in subsection (d).

b)
The chronic standard (CS) for the chemical constituents listed in subsection (e) shall not be exceeded by the arithmetic average of at least four consecutive samples collected over any period of at least four days, except as provided in subsection (d). The samples used to demonstrate compliance or lack of compliance with a CS must be collected in a manner which assures an average representative of the sampling period.


c)
The human health standard (HHS) for the chemical constituents listed in subsection (f) shall not be exceeded when the stream flow is at or above the harmonic mean flow pursuant to Section 302.658 nor shall an annual average, based on at least eight samples, collected in a manner representative of the sampling period, exceed the HHS except as provided in subsection (d).

d)
In waters where mixing is allowed pursuant to Section 302.102, the following apply:

1) The AS shall not be exceeded in any waters except for those waters for which the Agency has approved a ZID pursuant to Section 302.102.

2) The CS shall not be exceeded outside of waters in which mixing is allowed pursuant to Section 302.102.

3) The HHS shall not be exceeded outside of waters in which mixing is allowed pursuant to Section 302.102.

e) Numeric Water Quality Standards for the Protection of Aquatic Organisms

Constituent

Storet
Number

AS
(µg/L) ( ~~ug/L~~ )

CS
(µg/L) ( ~~ug/L~~ )

Arsenic
(trivalent, dissolved) ( ~~total~~ )

22680 ~~01002~~

360 X 1.0* = 360

190 X 1.0* = 190

Cadmium
(dissolved) ( ~~total~~ )

01025 ~~01027~~

exp[A+Bln(H)] X {1.138672-[(lnH)(0.041838)]}*, ~~but not to exceed 50 ug/L~~ , where A=-2.918 and B=1.128

exp[A+Bln(H)] X {1.101672-[(lnH)(0.041838)]}*, where A=-3.490 and B=0.7852

Chromium (hexavalent, total) ( ~~total hexavalent~~ )

01032

16

11

Chromium (trivalent, dissolved) ( ~~total trivalent~~ )

80357 ~~01033~~

exp[A+Bln(H)] X 0.316*
where A=3.688, and
B=0.8190

exp[A+Bln(H)] X 0.860*
where A=1.561, and B=0.8190

Copper
(dissolved) ( ~~total~~ )

01040 ~~01042~~

exp[A+Bln(H)] X 0.960*
where A=-1.464, and
B=0.9422

exp[A+Bln(H)] X 0.960*
where A=-1.465, and
B=0.8545

Cyanide (weak acid dissociable)

00718

49 22

9.9 ~~5.2~~

Lead
(dissolved) ( ~~total~~ )

01049 ~~01051~~

exp[A+Bln(H)] X {1.46203-[(lnH)(0.145712)]}*
where A=-1.301, and B=1.273

exp[A+Bln(H)] X {1.46203-[(lnH)(0.145712)]}*
where A=-2.863, and
B=1.273

Mercury (dissolved)

71890 ~~71900~~

2.6 X 0.85* = 2.2

1.3 X 0.85* = 1.1

Nickel (dissolved)

01065

exp[A+Bln(H)] X 0.998*
where A=0.5173, and
B=0.8460

exp[A+Bln(H)] X 0.997*
where A=-2.286, and
B=0.8460

TRC

500600

19

11

Zinc (dissolved)

01090

exp[A+Bln(H)] X 0.978*
where A=0.8875, and
B=0.8473

exp[A+Bln(H)] X 0.986*
where A=-0.8227, and
B=0.8473

Benzene

78124

4200

860

Ethylbenzene

78113

150

14

Toluene

78131

2000

600

Xylene(s)

81551

920

360

where: µg/L ~~ug/L~~ = microgram per liter,

exp[x] = base natural ~~neutral~~ logarithms raised to the x- power, and

ln(H) = natural logarithm of Hardness (STORET 00900).

* = conversion factor multiplier for dissolved metals

f)
Numeric Water Quality Standard for the Protection of Human Health

Constituent

STORET
Number

(µg/L) ( ~~ug/L~~ )

Mercury

71900

0.012

Benzene

78124

310

Where µg/L ~~ug/L~~ = micrograms per liter

g)
Concentrations of the following chemical constituents shall not be exceeded except in waters for which mixing is allowed pursuant to Section 302.102.

Constituent

Unit

STORET
Number

Standard

Barium (total)

mg/L

01007

5.0

Boron (total)

mg/L

01022

1.0

Chloride (total)

mg/L

00940

500.

Fluoride

mg/L

00951

1.4

Iron (dissolved)

mg/L

01046

1.0

Manganese (total)

mg/L

01055

1.0

~~Nickel (total)~~

~~mg/L~~

~~01067~~

    ~~1.0~~

Phenols

mg/L

32730

0.1

Selenium (total)

mg/L

01147

1.0

Silver (total)

µg/L ~~ug/L~~

01077

5.0

Sulfate

mg/L

00945

500.

Total Dissolved
Solids

mg/L

70300

1000.

~~Zinc (total)~~

~~mg/L~~

~~01092~~

    ~~1.0~~

where: mg/L = milligram per liter and
µg/L ~~ug/L~~ = microgram per liter

(Source: Amended at 20 Ill. Reg.7682, effective May 24, 1996; amended in __________ at __________ Ill. Reg. _______________, effective ________________, 2002)

SUBPART E: LAKE MICHIGAN BASIN WATER QUALITY STANDARDS

Section 302.504 Chemical Constituents

The following concentrations of chemical constituents must not be exceeded, except as provided in Sections 302.102 and 302.530:


a) The following standards must be met in all waters of the Lake Michigan Basin. Acute aquatic life standards (AS) must not be exceeded at any time except for those waters for which the Agency has approved a zone of initial dilution (ZID) pursuant to Sections 302.102 and 302.530. Chronic aquatic life standards (CS) and human health standards (HHS) must not be exceeded outside of waters in which mixing is allowed pursuant to Section 302.102 and 302.530 by the arithmetic average of at least four consecutive samples collected over a period of at least four days. The samples used to demonstrate compliance with the CS or HHS must be collected in a manner which assures an average representation of the sampling period.

Constituent

STORET Number

Unit

AS

CS

HHS

Arsenic
(Trivalent, dissolved)

22680

m g/L

340 X 1.0* = 340

148 X 1.0* = 148

NA

Cadmium (dissolved)

01025

m g/L

exp[A +Bln(H)] X {1.38672-[(lnH)(0.041838)]}*
A=-3.6867, and
B=1.128

exp[A +Bln(H)] X {1.101672-[(lnH)(0.041838)]}*
A = -2.715, and
B = 0.7852

NA

Chromium
(Hexavalent, total)

01032

m g/L

16

11

NA

Chromium
(Trivalent, dissolved)

80357

m g/L

exp[A +Bln(H)] X 0.316* where
A = 3.7256, and
B =0.819

exp[A +Bln(H)] X 0.860* where
A = 0.6848, and
B = 0.819

NA

Copper
(dissolved)

01040

m g/L

exp[A +Bln(H)] X 0.960* where
A = -1.700, and
B = 0.9422

exp[A +Bln(H)] X 0.960* where
A = -1.702, and
B = 0.8545

NA

Cyanide
(Weak acid dissociable)

00718

m g/L

22

5.2

NA

Lead
(dissolved)

01049

m g/L

exp[A +Bln(H)] X {1.46203-[(lnH)(0.145712)]}* where
A = -1.055, and
B = 1.273

exp[A +Bln(H)] X {1.46203-[(lnH)(0.145712)]}* where
A = -4.003, and
B = 1.273

NA

Nickel
(dissolved)

01065

m g/L

exp[A +Bln(H)] X 0.998* where
A = 2.255, and
B = 0.846

exp[A +Bln(H)] X 0.997* where
A = 0.0584, and
B = 0.846

NA

Selenium
(dissolved)

01145

m g/L

NA

5.0

NA

TRC

50060

m g/L

19

11

NA

Zinc
(dissolved)

01090

m g/L

exp[A +Bln(H)] X 0.978* where
A = 0.884, and
B = 0.8473

exp[A +Bln(H)] X 0.986* where
A = 0.884, and
B = 0.8473

NA

Benzene

78124 ~~34030~~

m g/L

3900 NA

800 NA

310

Chlorobenzene

34301

mg/L

NA

NA

3.2

2,4-Dimethylphenol

34606

mg/L

NA

NA

8.7

2,4-Dinitrophenol

03756

mg/L

NA

NA

2.8

Endrin

39390

m g/L

0.086

0.036

NA

Ethylbenzene

78113

µg/L

150

14

NA

Hexachloroethane

34396

m g/L

NA

NA

6.7

Methylene chloride

34423

mg/L

NA

NA

2.6

Parathion

39540

m g/L

0.065

0.013

NA

Pentachlorophenol

03761

m g/L

exp B ([pH] +A) where
A = -4.869, and
B = 1.005

exp B ([pH] +A) where
A = -5.134, and
B = 1.005

NA

Toluene

78131

mg/L

2000 NA

610 NA

51.0

Tricholroethylene

39180

m g/L

NA

NA

370

Xylene(s)

81551

m g/L

1200

490

NA

Where:
NA = Not Applied

Exp[x] = base of natural logarithms
raised to the x-power

ln(H) = natural logarithm of Hardness
(STORET 00900)

* = conversion factor multiplier for dissolved metals

(Source: Amended at 21 Ill. Reg. 1356, effective December 24, 1997, amended in __________ at __________ Ill. Reg. _______________, effective ________________, 2002)

Section 302.575 Procedures for Deriving Tier I Water Quality Criteria and Values in the Lake Michigan Basin to Protect Wildlife

The Lake Michigan Basin Wildlife Criterion (LMWC) is the concentration of a substance which if not exceeded protects Illinois wild mammal and bird populations from adverse effects resulting from ingestion of surface waters of the Lake Michigan Basin and from ingestion of aquatic prey organisms taken from surface waters of the Lake Michigan Basin. Wildlife criteria calculated under this Section protect against long-term effects and are therefore considered chronic criteria. The methodology involves utilization of data from test animals to derive criteria to protect representative or target species: bald eagle, herring gull, belted kingfisher, mink and river otter. The lower of the geometric mean of species specific criteria for bird species or mammal species is chosen as the LMWC to protect a broad range of species.

d) Calculation of TSV. The TSV, measured in milligrams per liter (mg/L), is calculated according to the equation:

TSV = { [TD x Wt] / [UFa x UFs x UFl] } / { W + S [FTLi x BAFWLTLi] }

Where:

TSV = target species value in milligrams of substance per liter (mg/L).
TD = test dose that is toxic to the test species, either NOAEL or LOAEL.
UFa = the uncertainty factor for extrapolating toxicity data across species (unitless). A species-specific UFa shall be selected and applied to each target species, consistent with the equation
UFs = the uncertainty factor for extrapolating from subchronic to chronic exposures (unitless)
UFl = the uncertainty factor for extrapolation from LOAEL to NOAEL (unitless)
Wt = average weight in kilograms (kg) of the target species
W = average daily volume of water in liters consumed per day (L/d) by the target species
FTLi = average daily amount of food consumed by the target species in kilograms (kg/d) for trophic level i
BAFWLTLi = aquatic life bioaccumulation factor with units of liter per kilogram (L/kg), as derived in Section 302.570 for trophic level

e) Calculation of the Lake Michigan Basin Wildlife Criterion. TSVs are obtained for each target species. The geometric mean TSVs of all mammal species is calculated and also of all bird species. The LMWC is the lower of the bird or mammal geometric mean TSV.

(Source: Added at 21 Ill. Reg. 1356, effective December 24, 1997, amended in __________ at __________ Ill. Reg. _______________, effective ________________, 2002)

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a)
The acute standard (AS) for the chemical constituents listed in subsection (e) shall not be exceeded at any time except as provided in subsection (d).

b)
The chronic standard (CS) for the chemical constituents listed in subsection (e) shall not be exceeded by the arithmetic average of at least four consecutive samples collected over any period of at least four days, except as provided in subsection (d). The samples used to demonstrate compliance or lack of compliance with a CS must be collected in a manner which assures an average representative of the sampling period.


c)
The human health standard (HHS) for the chemical constituents listed in subsection (f) shall not be exceeded when the stream flow is at or above the harmonic mean flow pursuant to Section 302.658 nor shall an annual average, based on at least eight samples, collected in a manner representative of the sampling period, exceed the HHS except as provided in subsection (d).

d)
In waters where mixing is allowed pursuant to Section 302.102, the following apply:

1)						The AS shall not be exceeded in any waters except for those waters for which the Agency has approved a ZID pursuant to Section 302.102.

2)						The CS shall not be exceeded outside of waters in which mixing is allowed pursuant to Section 302.102.

e)	Numeric Water Quality Standards for the Protection of Aquatic Organisms

Constituent	Storet Number	AS (µg/L) ( ~~ug/L~~ )	CS (µg/L) ( ~~ug/L~~ )
Arsenic (trivalent, dissolved) ( ~~total~~ )	22680 ~~01002~~	360 X 1.0* = 360	190 X 1.0* = 190
Cadmium (dissolved) ( ~~total~~ )	01025 ~~01027~~	exp[A+Bln(H)] X {1.138672-[(lnH)(0.041838)]}*, ~~but not to exceed 50 ug/L~~ , where A=-2.918 and B=1.128	exp[A+Bln(H)] X {1.101672-[(lnH)(0.041838)]}*, where A=-3.490 and B=0.7852
Chromium (hexavalent, total) ( ~~total hexavalent~~ )	01032	16	11
Chromium (trivalent, dissolved) ( ~~total trivalent~~ )	80357 ~~01033~~	exp[A+Bln(H)] X 0.316* where A=3.688, and B=0.8190	exp[A+Bln(H)] X 0.860* where A=1.561, and B=0.8190
Copper (dissolved) ( ~~total~~ )	01040 ~~01042~~	exp[A+Bln(H)] X 0.960* where A=-1.464, and B=0.9422	exp[A+Bln(H)] X 0.960* where A=-1.465, and B=0.8545
Cyanide (weak acid dissociable)	00718	49 22	9.9 ~~5.2~~
Lead (dissolved) ( ~~total~~ )	01049 ~~01051~~	exp[A+Bln(H)] X {1.46203-[(lnH)(0.145712)]}* where A=-1.301, and B=1.273	exp[A+Bln(H)] X {1.46203-[(lnH)(0.145712)]}* where A=-2.863, and B=1.273
Mercury (dissolved)	71890 ~~71900~~	2.6 X 0.85* = 2.2	1.3 X 0.85* = 1.1
Nickel (dissolved)	01065	exp[A+Bln(H)] X 0.998* where A=0.5173, and B=0.8460	exp[A+Bln(H)] X 0.997* where A=-2.286, and B=0.8460
TRC	500600	19	11
Zinc (dissolved)	01090	exp[A+Bln(H)] X 0.978* where A=0.8875, and B=0.8473	exp[A+Bln(H)] X 0.986* where A=-0.8227, and B=0.8473
Benzene	78124	4200	860
Ethylbenzene	78113	150	14
Toluene	78131	2000	600
Xylene(s)	81551	920	360

f)
Numeric Water Quality Standard for the Protection of Human Health


g)
Concentrations of the following chemical constituents shall not be exceeded except in waters for which mixing is allowed pursuant to Section 302.102.

Constituent	Unit	STORET Number	Standard
Barium (total)	mg/L	01007	5.0
Boron (total)	mg/L	01022	1.0
Chloride (total)	mg/L	00940	500.
Fluoride	mg/L	00951	1.4
Iron (dissolved)	mg/L	01046	1.0
Manganese (total)	mg/L	01055	1.0
~~Nickel (total)~~	~~mg/L~~	~~01067~~	~~1.0~~
Phenols	mg/L	32730	0.1
Selenium (total)	mg/L	01147	1.0
Silver (total)	µg/L ~~ug/L~~	01077	5.0
Sulfate	mg/L	00945	500.
Total Dissolved Solids	mg/L	70300	1000.
~~Zinc (total)~~	~~mg/L~~	~~01092~~	~~1.0~~

where: mg/L = milligram per liter and
µg/L ~~ug/L~~ = microgram per liter


(Source: Amended at 20 Ill. Reg.7682, effective May 24, 1996; amended in __________ at __________ Ill. Reg. _______________, effective ________________, 2002)


a)	The following standards must be met in all waters of the Lake Michigan Basin. Acute aquatic life standards (AS) must not be exceeded at any time except for those waters for which the Agency has approved a zone of initial dilution (ZID) pursuant to Sections 302.102 and 302.530. Chronic aquatic life standards (CS) and human health standards (HHS) must not be exceeded outside of waters in which mixing is allowed pursuant to Section 302.102 and 302.530 by the arithmetic average of at least four consecutive samples collected over a period of at least four days. The samples used to demonstrate compliance with the CS or HHS must be collected in a manner which assures an average representation of the sampling period.

Constituent	STORET Number	Unit	AS	CS	HHS
Arsenic (Trivalent, dissolved)	22680	m g/L	340 X 1.0* = 340	148 X 1.0* = 148	NA
Cadmium (dissolved)	01025	m g/L	exp[A +Bln(H)] X {1.38672-[(lnH)(0.041838)]}* A=-3.6867, and B=1.128	exp[A +Bln(H)] X {1.101672-[(lnH)(0.041838)]}* A = -2.715, and B = 0.7852	NA
Chromium (Hexavalent, total)	01032	m g/L	16	11	NA
Chromium (Trivalent, dissolved)	80357	m g/L	exp[A +Bln(H)] X 0.316* where A = 3.7256, and B =0.819	exp[A +Bln(H)] X 0.860* where A = 0.6848, and B = 0.819	NA
Copper (dissolved)	01040	m g/L	exp[A +Bln(H)] X 0.960* where A = -1.700, and B = 0.9422	exp[A +Bln(H)] X 0.960* where A = -1.702, and B = 0.8545	NA
Cyanide (Weak acid dissociable)	00718	m g/L	22	5.2	NA
Lead (dissolved)	01049	m g/L	exp[A +Bln(H)] X {1.46203-[(lnH)(0.145712)]}* where A = -1.055, and B = 1.273	exp[A +Bln(H)] X {1.46203-[(lnH)(0.145712)]}* where A = -4.003, and B = 1.273	NA
Nickel (dissolved)	01065	m g/L	exp[A +Bln(H)] X 0.998* where A = 2.255, and B = 0.846	exp[A +Bln(H)] X 0.997* where A = 0.0584, and B = 0.846	NA
Selenium (dissolved)	01145	m g/L	NA	5.0	NA
TRC	50060	m g/L	19	11	NA
Zinc (dissolved)	01090	m g/L	exp[A +Bln(H)] X 0.978* where A = 0.884, and B = 0.8473	exp[A +Bln(H)] X 0.986* where A = 0.884, and B = 0.8473	NA
Benzene	78124 ~~34030~~	m g/L	3900 NA	800 NA	310
Chlorobenzene	34301	mg/L	NA	NA	3.2
2,4-Dimethylphenol	34606	mg/L	NA	NA	8.7
2,4-Dinitrophenol	03756	mg/L	NA	NA	2.8
Endrin	39390	m g/L	0.086	0.036	NA
Ethylbenzene	78113	µg/L	150	14	NA
Hexachloroethane	34396	m g/L	NA	NA	6.7
Methylene chloride	34423	mg/L	NA	NA	2.6
Parathion	39540	m g/L	0.065	0.013	NA
Pentachlorophenol	03761	m g/L	exp B ([pH] +A) where A = -4.869, and B = 1.005	exp B ([pH] +A) where A = -5.134, and B = 1.005	NA
Toluene	78131	mg/L	2000 NA	610 NA	51.0
Tricholroethylene	39180	m g/L	NA	NA	370
Xylene(s)	81551	m g/L	1200	490	NA

d)	Calculation of TSV. The TSV, measured in milligrams per liter (mg/L), is calculated according to the equation:


e)	Calculation of the Lake Michigan Basin Wildlife Criterion. TSVs are obtained for each target species. The geometric mean TSVs of all mammal species is calculated and also of all bird species. The LMWC is the lower of the bird or mammal geometric mean TSV.

(Source: Added at 21 Ill. Reg. 1356, effective December 24, 1997, amended in __________ at __________ Ill. Reg. _______________, effective ________________, 2002)