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

Antidegradation 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

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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Fecal Coliform (Repealed)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 BCCs

302.535

Ammonia Nitrogen

302.540

Other Toxic Substances

302.545

Data Requirements

302.550

Analytical Testing

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302.553

Determining the Lake Michigan Aquatic Toxicity Criteria or Values - General

Procedures

302.555

Determining the Tier I Lake Michigan Basin Acute Aquatic Life 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

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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 21 Ill. Reg.

370, effective December 23, 1996; expedited correction at 21 Ill. Reg. 6273, effective December

23, 1996; amended in R97-25 at 21 Ill. Reg. 1356, effective December 24, 1997; amended in

__________ at __________ Ill. Reg. __________, effective __________.

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Section 302.105

Antidegradation

The purpose of this Section is to maintain high quality waters and to prevent unnecessary

deterioration of waters of the State.

a)

 

Existing Uses

Uses actually attained in the water body on or after November 28, 1975, whether

or not they are included in the water quality standards, must be maintained and

protected. Examples of degradation of existing uses of the waters of the State

include but are not limited to:

1)

 

an action that would result in the deterioration of the existing aquatic

community, such as a shift from a community of predominantly pollutant-

sensitive species to pollutant-tolerant species or a loss of species diversity;

or

2)

 

an action that would result in a loss of a resident or indigenous species

whose presence is necessary to sustain commercial or recreational

activities.

b)

 

Outstanding Resource Waters

1)

 

Waters that are classified as an Outstanding Resource Water (ORW)

pursuant to 35 Ill. Adm. Code 303.205 must not be lowered in quality

except as provided below:

A)

 

An activity that results in short-term, temporary (i.e., weeks or

months) lowering of water quality; or

B)

 

Existing site stormwater discharges that comply with applicable

federal and state storm water management regulations and do not

result in a violation of any water quality standards; and

C)

 

The proponent of any activity requiring a National Pollutant

Discharge Elimination System (NPDES) or a Clean Water Act

(CWA) Section 401 certification must also submit a demonstration

to the Agency meeting the requirements of subsections b(2) and

c(2) of this Section.

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2)

 

Any activity listed in subsection (b)(1) or proposed increase in pollutant

loading must also meet the following requirements:

A)

 

All existing uses of the water will be fully protected;

B)

 

The proposed increase in pollutant loading is necessary for an

activity that will improve water quality in the ORW; and

C)

 

The improvement could not be practicably achieved without the

proposed increase in pollutant loading.

3)

 

Any proposed increase in pollutant loading requiring an NPDES permit or

a CWA 401 certification for an ORW must be assessed pursuant to 35 Ill.

Adm. Code Part 354 to determine compliance with this Section.

c)

 

High Quality Waters

1)

 

Except as otherwise provided in subsection (d) of this Section, waters of

the State whose existing quality exceeds established standards of this Part

must be maintained in their present high quality, unless the proponent can

demonstrate pursuant to subsection (c)(2) of this Section, that allowing the

lowering of water quality, is necessary to accommodate important

economic or social development.

2)

 

Any proposed increase in pollutant loading subject to a NPDES permit or

CWA Section 401 certification must be assessed pursuant to 35 Ill. Adm.

Code Part 354 to determine compliance with this Section.

A)

 

The Agency shall consider the fate and effect of any parameters

proposed for an increased pollutant loading.

B)

 

The proponent of an increased pollutant loading shall demonstrate

the following:

i)

 

The applicable numeric or narrative water quality standard

must not be exceeded as a result of the proposed activity;

ii)

 

All existing uses must be fully protected;

---

iii)

 

All technically and economically reasonable measures to

avoid or minimize the extent of the proposed load increase

have been incorporated into the proposed activity; and

iv)

 

The activity that results in an increased pollutant loading

must benefit the community at large.

d)

 

Activities Not Subject to an Antidegradation Demonstration

The following activities will not be subject to an antidegradation demonstration

pursuant to subsection (c) of this Section.

1)

 

Short-term, temporary (i.e., weeks or months) lowering of water quality;

2)

 

Bypasses that are not prohibited at 40 CFR 122.41(m);

3)

 

Response actions pursuant to the Comprehensive Environmental

Response, Compensation and Liability Act (CERCLA), as amended, or

similar federal or State authority, taken to alleviate a release into the

environment of hazardous substances, pollutants or contaminants which

may pose a danger to public health or welfare;

4)

 

A thermal discharge that has been approved through a CWA Section

316(a) demonstration;

5)

 

New or increased discharges of a non-contact cooling water, without

additives, returned to the same body of water from which it was taken as

defined by 35 Ill. Adm. Code 352.104, provided that the discharge

complies with applicable Illinois thermal standards; or

6)

 

Discharges permitted under a current general NPDES permit as provided

by 415 ILCS 5/39(b), are not subject to facility-specific antidegradation

review.

e)

 

Lake Michigan Basin

Waters in the Lake Michigan basin as identified in 35 Ill. Adm. Code 303.443 are also

subject to the requirements applicable to bioaccumulative chemicals of concern found at

Section 302.521 of this Part.

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Section 302.105 Nondegradation

Except as otherwise provided in Section 302.520, waters whose existing quality is better

than the established standards at their date of their adoption will be maintained in their

present high quality. Such waters will not be lowered in quality unless and until it is

affirmatively demonstrated that such change will not interfere with or become injurious

to any appropriate beneficial uses made of, or presently possible in, such waters and that

such change is justifiable as a result of necessary economic or social development.