ADMINISTRATIVE CODE

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  3. TITLE 35: ENVIRONMENTAL PROTECTION
  4. CHAPTER I: POLLUTION CONTROL BOARD
TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE E: AGRICULTURE RELATED POLLUTION
CHAPTER I: POLLUTION CONTROL BOARD
PART 502 PERMITS
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SUBPART A: PERMITS REQUIRED

Section 502.101 NPDES Permit Requirement and Duty to Maintain Permit Coverage
Section 502.102 Land Application Discharges and Agricultural Stormwater
Section 502.103 Large CAFOs
Section 502.104 Medium CAFOs
Section 502.105 Small CAFOs
Section 502.106 Case-By-Case Designation Requiring NPDES Permits

SUBPART B: PERMIT APPLICATIONS

Section 502.201 Permit Applications
Section 502.202 Permit Application Submissions
Section 502.203 New Applications (Repealed)
Section 502.204 Renewal
Section 502.205 New Operations (Repealed)
Section 502.206 Signatures
Section 502.207 Disclosure Required for Land Trusts

SUBPART C: PERMIT ISSUANCE AND CONDITIONS

Section 502.301 Standards for Issuance
Section 502.302 Duration of Permits
Section 502.303 New Source Standards
Section 502.304 Issuance and Conditions
Section 502.305 Agency Criteria
Section 502.310 CAFOs Seeking Coverage Under NPDES General Permits
Section 502.315 CAFO Permit Requirements
Section 502.320 Recordkeeping Requirements
Section 502.325 Annual Report

SUBPART D: APPEAL AND ENFORCEMENT

Section 502.401 Appeals from Conditions in Permits
Section 502.402 Defenses
Section 502.403 Modification or Termination of Permits

SUBPART E: REQUIREMENTS FOR DEVELOPING AND IMPLEMENTING NUTRIENT MANAGEMENT PLANS

Section 502.500 Purpose, Scope, and Applicability
Section 502.505 Nutrient Management Plan Information
Section 502.510 Nutrient Management Plan Requirements
Section 502.515 Terms of Nutrient Management Plan
Section 502.520 Changes to the Nutrient Management Plan

SUBPART F: LIVESTOCK WASTE DISCHARGE LIMITATIONS AND TECHNICAL STANDARDS

Section 502.600 Applicability
Section 502.605 Livestock Waste Discharge Limitations for the Production Area for Permitted CAFOs
Section 502.610 Additional Measures for CAFO Production Areas
Section 502.615 Nutrient Transport Potential
Section 502.620 Protocols to Land Apply Livestock Waste
Section 502.625 Determination of Livestock Waste Application Rates
Section 502.630 Protocols to Land Apply Livestock Waste During Winter
Section 502.635 Manure and Soil Sampling and Analysis
Section 502.640 Inspection of Land Application Equipment for Leaks
Section 502.645 Land Application Setback Requirements

SUBPART G: ADDITIONAL LIVESTOCK WASTE DISCHARGE LIMITATIONS

Section 502.710 New Source Performance Standards for Dairy Cows and Cattle Other Than Veal Calves
Section 502.720 Horse and Sheep CAFOs: BPT, BAT, and NSPS
Section 502.730 Duck CAFOs: BPT and NSPS

SUBPART H: NEW SOURCE PERFORMANCE STANDARDS FOR NEW SWINE, POULTRY AND VEAL LARGE CAFOS

Section 502.800 Applicability
Section 502.810 Production Area Requirements
Section 502.820 Land Application Area Requirements
Section 502.830 Alternative Best Management Practice Livestock Waste Discharge Limitations
Section 502.840 Technical Evaluation

Section 502.APPENDIX A References to Previous Rules (Repealed)
AUTHORITY: Implementing Sections 9, 10, 12, 13, 21, and 22 of the Environmental Protection Act [415 ILCS 5/9, 10, 12, 13, 21, 22] and authorized by Section 27 of the Environmental Protection Act [415 ILCS 5/27].
SOURCE: Filed and effective January 1, 1978; amended at 2 Ill. Reg. 44, p. 137, effective October 30, 1978; codified at 7 Ill. Reg. 10594; amended in R12-23 at 38 Ill. Reg. 17687, effective August 11, 2014; amended in R18-25 at 48 Ill. Reg. 3196, effective February 15, 2024; amended in R25-23 at 49 Ill. Reg. 12691, effective September 23, 2025.