Illinois Administrative Code

Section 502.401 Appeals from Conditions in Permits An applicant may consider any condition the Agency imposes in a permit as the Agency refusing to grant a permit. An applicant or others who have been a party or participant at an Agency hearing are entitled to appeal the Agency's…

Section 502.402 Defenses a) Issuing or possessing a permit does not allow the permittee to violate the Act or Board rules and is not a defense to a violation other than an alleged violation for construction or operation without a permit. b) Compliance with an NPDES permit must be…

Section 502.403 Modification or Termination of Permits The Board may, after petition and opportunity for hearing under the Act and its procedural rules in 35 Ill. Adm. Code 101 through 130, terminate any permit or modify it in any manner that is consistent with the Act and applic…

Section 502.500 Purpose, Scope, and Applicability The requirements in this Subpart are intended to minimize the transportation of nitrogen and phosphorus into the waters of the United States to comply with the nutrient management plan. a) The requirements in this Subpart apply to…

Section 502.505 Nutrient Management Plan Information The nutrient management plan must include the following items: a) Name, address, and phone number of the CAFO owners; b) Name, address, and phone number of the managers or operators if different than the owners; c) Address, pho…

Section 502.510 Nutrient Management Plan Requirements a) Any permit issued to a CAFO must require implementing a nutrient management plan by the date of permit coverage that includes, best management practices necessary to meet this Section and the applicable livestock discharge …

Section 502.515 Terms of Nutrient Management Plan Any permit issued to a CAFO must require compliance with the terms of the CAFO's site-specific nutrient management plan. These terms include: a) The terms of the nutrient management plan are the information, protocols, best manage…

Section 502.520 Changes to the Nutrient Management Plan When a CAFO owner or operator makes changes to the CAFO's nutrient management plan previously submitted to the Agency, the procedures in this Section are applicable. a) The CAFO owner or operator must identify changes to the…

Section 502.600 Applicability a) This Subpart provides livestock waste discharge limitations and technical standards for permitted CAFOs. Permitted CAFOs must achieve the livestock waste discharge limitations and technical standards in this Subpart by the permit coverage date. Th…

Section 502.605 Livestock Waste Discharge Limitations for the Production Area for Permitted CAFOs a) Except as provided in subsections (a)(1), (a)(2), and (c), there must be no livestock waste discharge into the waters of the United States from the CAFO production area. Whenever …

Section 502.610 Additional Measures for CAFO Production Areas Each CAFO subject to this Subpart must implement the following: a) The CAFO owner or operator must at all times properly operate and maintain all structural and operational aspects of the facilities, including all syst…

Section 502.615 Nutrient Transport Potential a) Field Assessment. An individual field assessment of the potential for nitrogen and phosphorus transport from the field to surface waters must be conducted and the results contained in the nutrient management plan. The following fact…

Section 502.620 Protocols to Land Apply Livestock Waste a) Livestock wastes must not be applied to the waters of the United States. Livestock waste application must not cause runoff into the waters of the United States during non-precipitation events. Livestock waste application …

Section 502.625 Determination of Livestock Waste Application Rates a) Livestock waste application must not exceed the agronomic nitrogen rate, which is defined as the annual application rate of nitrogen that can be expected to be required for a realistic crop yield goal. Multi-ye…

Section 502.630 Protocols to Land Apply Livestock Waste During Winter a) Winter Application Prohibition. Surface land application of livestock waste on frozen, ice-covered, or snow-covered ground is prohibited except as specified in subsection (a)(1). 1) Despite the winter applic…

Section 502.635 Manure and Soil Sampling and Analysis a) Soil Phosphorus Sampling. Soil samples must be obtained and analyzed from each field of the land application area where applications are planned. Fields where livestock waste is applied must be sampled twice for each field …

Section 502.640 Inspection of Land Application Equipment for Leaks a) For all permitted CAFOs that land apply livestock waste, the CAFO owner or operator must periodically inspect equipment used for land application of livestock waste for leaks or problems that result in improper…

Section 502.645 Land Application Setback Requirements a) Distance from Residences Livestock waste must not be land applied within ¼ mile of any residence not part of the CAFO unless it is injected or incorporated on the day of application. b) Setbacks from Waters 1) Livestock was…

Section 502.710 New Source Performance Standards for Dairy Cows and Cattle Other Than Veal Calves a) New Source Performance Standards (NSPS) Applicability Any CAFO with the capacity to stable or confine 700 or more mature dairy cows, whether milked or dry, or 1,000 or more cattle…

Section 502.720 Horse and Sheep CAFOs: BPT, BAT, and NSPS This Section contains the effluent limitations applicable to discharges resulting from the production area at horse and sheep CAFOs. The limitations and requirements of this Section are applicable on the date of permit cov…

Section 502.730 Duck CAFOs: BPT and NSPS This Section contains the effluent limitations applicable to discharges resulting from the production areas at dry lot and wet lot duck CAFOs. CAFOs subject to this Section must attain the limitations and requirements of this Section as of…

Section 502.800 Applicability a) This Subpart applies to all new swine, poultry, and veal CAFOs with the capacity to stable or confine the total amount of specific animals provided for in the definition of large CAFOs in Section 502.103. b) This Subpart H is in addition to the li…

Section 502.810 Production Area Requirements There must be no discharge of livestock waste pollutants to waters of the United States from the production area unless the CAFO complies with the alternative livestock waste discharge limitations provided in Section 502.830. (Source: …

Section 502.820 Land Application Area Requirements For CAFOs subject to this Subpart, the land application areas must attain the same limitations and requirements as specified in Sections 502.615 through 502.645. (Source: Amended at 48 Ill. Reg. 3196, effective February 15, 2024)

Section 502.830 Alternative Best Management Practice Livestock Waste Discharge Limitations a) Any CAFO subject to this Subpart may request that the Agency establish NPDES permit best management practice (BMP) livestock waste discharge limitations designed to ensure no discharge o…

Section 502.840 Technical Evaluation All technical evaluations conducted under this Subpart H must address the minimum elements contained in this Section. Waste management and storage facilities designed, constructed, operated, and maintained consistent with the analysis conducte…

Section 502.APPENDIX A References to Previous Rules (Repealed) (Source: Repealed at 48 Ill. Reg. 3196, effective February 15, 2024)

Section 503.101 Fish and Aquatic Animal Production Facilities a) A National Pollutant Discharge Elimination System (NPDES) permits is required for the construction, modification, or operation of a facility that contains, grows, or holds aquatic animals in ponds, raceways, or simi…

Section 503.102 Irrigation Activities NPDES permits are required for discharges of irrigation return flow (such as tailwater, tile drainage, surfaced groundwater flow or bypass water) operated by public or private organizations or individuals if: a) There is a point source of dis…

Section 503.103 Silvicultural Activities NPDES permits are required for discharges from silvicultural point sources. (Source: Added at 2 Ill. Reg. 44, p. 137, effective October 30, 1978)

Section 503.APPENDIX A References to Previous Rules (Repealed) (Source: Repealed at 48 Ill. Reg. 3269, effective February 15, 2024)

Section 506.101 Applicability This Subpart applies to 35 Ill. Adm. Code 506. The applicability of Subpart B, Standards for the Design and Construction of Livestock Waste Lagoons, is stated in Section 506.201. The applicability of Subpart C, Standards for the Design and Constructi…

Section 506.102 Severability If any provision of this Part or its application to any person or under any other circumstances is adjudged invalid, such adjudication does not affect the validity of this Part as a whole or of any portion not adjudged invalid.

Section 506.103 Definitions Except as stated in this Section, or unless a different meaning of a word or term is clear from the context, the definition of words or terms in this Part must be the same as that applied to the same words or terms in the Environmental Protection Act […

Section 506.104 Incorporations by Reference a) The Board incorporates the following materials by reference: 1) APHA. American Public Health Association, 1015 Fifteenth Street, NW, Washington, DC 20005, (202) 789-5600, "Standard Methods for the Examination of Water and Wastewater"…

Section 506.105 Recordkeeping (Repealed) (Source: Repealed at 25 Ill. Reg. 14883, effective November 15, 2001)

Section 506.106 Alternatives, Modifications, and Waivers a) All requests for alternatives, modifications, and waivers to this Part, where allowed by Sections 13(e) and 15(a) of the Act [510 ILCS 77/13(e), 15(a)] or this Part must be made in writing to the Department. Construction…

Section 506.201 Applicability This Subpart applies to any new or modified lagoon, that the Department has not approved the design for before November 15, 2001. The standards and specifications for livestock waste lagoon construction contained in this Subpart must be used in the d…

Section 506.202 Site Investigation a) The owner or operator of a lagoon constructed under this Subpart must conduct a site investigation in compliance with this Section to determine the following: 1) Whether aquifer material is considered present (or not present) within 50 feet o…

Section 506.203 Registration (Repealed) (Source: Repealed at 25 Ill. Reg. 14883, effective November 15, 2001)

Section 506.204 Lagoon Design Standards a) The owner or operator of any livestock waste lagoon subject to this Subpart must construct or modify the lagoon in accordance with: 1) "Design of anaerobic lagoons for animal waste management", ASAE Engineering Practice 403.2; or the gui…

Section 506.205 Liner Standards a) The design of a liner constructed from in-situ soils, borrowed clay or a clay/bentonite mixture, or a synthetic liner under Section 506.204(d) must comply with this Section. b) A liner constructed using in-situ soil or borrowed clay or clay/bent…

Section 506.206 Groundwater Monitoring a) The owner or operator of any livestock waste lagoon required to implement groundwater monitoring under Section 506.204(d) must implement a monitoring program that complies with this Section and 8 Ill. Adm. Code 900.Subpart F. b) The groun…

Section 506.207 Construction in a Karst Area a) A new earthen livestock waste lagoon constructed in a karst area must be designed to prevent seepage of the stored material to groundwater. Owners or operators of proposed facilities must consult with the local soil and water conser…

Section 506.208 Construction in a Flood Fringe Area A new earthen livestock waste lagoon may be constructed within the portion of a 100-year floodplain that is within the flood fringe and outside the floodway if the facility is designed and constructed so that livestock waste is …

Section 506.209 Lagoon Closure and Ownership Transfer (Repealed) (Source: Repealed at 25 Ill. Reg. 14883, effective November 15, 2001)

Section 506.210 Secondary Containment Despite any other requirement of this subpart or 8 Ill. Adm. Code 900, every earthen livestock waste lagoon constructed under this subpart must include the construction of a secondary berm, filter strip, grass waterway, or terrace, or any com…