TITLE 35: ENVIRONMENTAL PROTECTION SUBTITLE G: WASTE DISPOSAL CHAPTER I: POLLUTION CONTROL BOARD SUBCHAPTER c: HAZARDOUS WASTE OPERATING REQUIREMENTS PART 721 IDENTIFICATION AND LISTING OF HAZARDOUS WASTE The General Assembly's Illinois Administrative Code database includes only those rulemakings that have been permanently adopted. This menu will point out the Sections on which an emergency rule (valid for a maximum of 150 days, usually until replaced by a permanent rulemaking) exists. The emergency rulemaking is linked through the notation that follows the Section heading in the menu. View Entire Part SUBPART A: GENERAL PROVISIONS Section 721.101 Purpose and Scope Section 721.102 Definition of Solid Waste Section 721.103 Definition of Hazardous Waste Section 721.104 Exclusions Section 721.105 Special Requirements for Hazardous Waste Generated by Small Quantity Generators (Repealed) Section 721.106 Requirements for Recyclable Materials Section 721.107 Residues of Hazardous Waste in Empty Containers Section 721.108 PCB Wastes Regulated under TSCA Section 721.109 Requirements for Universal Waste SUBPART B: CRITERIA FOR IDENTIFYING THE CHARACTERISTICS OF HAZARDOUS WASTE AND FOR LISTING HAZARDOUS WASTES Section 721.110 Criteria for Identifying the Characteristics of Hazardous Waste Section 721.111 Criteria for Listing Hazardous Waste SUBPART C: CHARACTERISTICS OF HAZARDOUS WASTE Section 721.120 General Section 721.121 Characteristic of Ignitability Section 721.122 Characteristic of Corrosivity Section 721.123 Characteristic of Reactivity Section 721.124 Toxicity Characteristic SUBPART D: LISTS OF HAZARDOUS WASTE Section 721.130 General Section 721.131 Hazardous Wastes from Nonspecific Sources Section 721.132 Hazardous Waste from Specific Sources Section 721.133 Discarded Commercial Chemical Products, Off-Specification Species, Container Residues, and Spill Residues Thereof Section 721.135 Wood Preserving Wastes SUBPART E: EXCLUSIONS AND EXEMPTIONS Section 721.138 Exclusion of Comparable Fuel and Syngas Fuel (Repealed) Section 721.139 Conditional Exclusion for Used, Broken CRTs and Processed CRT Glass Undergoing Recycling Section 721.140 Conditional Exclusion for Used, Intact CRTs Exported for Recycling Section 721.141 Notification and Recordkeeping for Used, Intact CRTs Exported for Reuse SUBPART H: FINANCIAL REQUIREMENTS FOR MANAGEMENT OF EXCLUDED HAZARDOUS SECONDARY MATERIALS Section 721.240 Applicability Section 721.241 Definitions of Terms as Used in This Subpart Section 721.242 Cost Estimate Section 721.243 Financial Assurance Condition Section 721.247 Liability Requirements Section 721.248 Incapacity of Owners or Operators, Guarantors, or Financial Institutions Section 721.249 Use of State-Required Mechanisms Section 721.250 State Assumption of Responsibility Section 721.251 Wording of the Instruments SUBPART I: USE AND MANAGEMENT OF CONTAINERS Section 721.270 Applicability Section 721.271 Condition of Containers Section 721.272 Compatibility of Hazardous Secondary Materials with Containers Section 721.273 Management of Containers Section 721.275 Secondary Containment Section 721.276 Special Requirements for Ignitable or Reactive Hazardous Secondary Material Section 721.277 Special Requirements for Incompatible Materials Section 721.279 Air Emission Standards SUBPART J: TANK SYSTEMS Section 721.290 Applicability Section 721.291 Assessment of Existing Tank System's Integrity Section 721.293 Containment and Detection of Releases Section 721.294 General Operating Requirements Section 721.296 Response to Leaks or Spills and Disposition of Leaking or Unfit-for-Use Tank Systems Section 721.297 Termination of Remanufacturing Exclusion Section 721.298 Special Requirements for Ignitable or Reactive Materials Section 721.299 Special Requirements for Incompatible Materials Section 721.300 Air Emission Standards SUBPART M: EMERGENCY PREPAREDNESS AND RESPONSE FOR MANAGEMENT OF EXCLUDED HAZARDOUS SECONDARY MATERIALS Section 721.500 Applicability Section 721.510 Preparedness and Prevention Section 721.511 Emergency Procedures for Facilities Generating or Accumulating 6,000 kg or Less of Hazardous Secondary Material Section 721.520 Contingency Planning and Emergency Procedures for Facilities Generating or Accumulating More Than 6,000 kg of Hazardous Secondary Material SUBPART AA: AIR EMISSION STANDARDS FOR PROCESS VENTS Section 721.930 Applicability Section 721.931 Definitions Section 721.932 Standards: Process Vents Section 721.933 Standards: Closed-Vent Systems and Control Devices Section 721.934 Test Methods and Procedures Section 721.935 Recordkeeping Requirements SUBPART BB: AIR EMISSION STANDARDS FOR EQUIPMENT LEAKS Section 721.950 Applicability Section 721.951 Definitions Section 721.952 Standards: Pumps in Light Liquid Service Section 721.953 Standards: Compressors Section 721.954 Standards: Pressure Relief Devices in Gas/Vapor Service Section 721.955 Standards: Sampling Connection Systems Section 721.956 Standards: Open-Ended Valves or Lines Section 721.957 Standards: Valves in Gas/Vapor Service or in Light Liquid Service Section 721.958 Standards: Pumps and Valves in Heavy Liquid Service, Pressure Relief Devices in Light Liquid or Heavy Liquid Service, and Flanges and Other Connectors Section 721.959 Standards: Delay of Repair Section 721.960 Standards: Closed-Vent Systems and Control Devices Section 721.961 Alternative Standards for Valves in Gas/Vapor Service or in Light Liquid Service: Percentage of Valves Allowed to Leak Section 721.962 Alternative Standards for Valves in Gas/Vapor Service or in Light Liquid Service: Skip Period Leak Detection and Repair Section 721.963 Test Methods and Procedures Section 721.964 Recordkeeping Requirements SUBPART CC: AIR EMISSION STANDARDS FOR TANKS AND CONTAINERS Section 721.980 Applicability Section 721.981 Definitions Section 721.982 Standards: General Section 721.983 Material Determination Procedures Section 721.984 Standards: Tanks Section 721.986 Standards: Containers Section 721.987 Standards: Closed-Vent Systems and Control Devices Section 721.988 Inspection and Monitoring Requirements Section 721.989 Recordkeeping Requirements Section 721.APPENDIX A Representative Sampling Methods Section 721.APPENDIX B Method 1311 Toxicity Characteristic Leaching Procedure (TCLP) (Repealed) Section 721.APPENDIX C Chemical Analysis Test Methods (Repealed) Section 721.TABLE A Analytical Characteristics of Organic Chemicals (Repealed) Section 721.TABLE B Analytical Characteristics of Inorganic Species (Repealed) Section 721.TABLE C Sample Preparation/Sample Introduction Techniques (Repealed) Section 721.APPENDIX G Basis for Listing Hazardous Wastes Section 721.APPENDIX H Hazardous Constituents Section 721.APPENDIX I Wastes Excluded by Administrative Action Section 721.TABLE A Wastes Excluded by USEPA pursuant to 40 CFR 260.20 and 260.22 from Non-Specific Sources Section 721.TABLE B Wastes Excluded by USEPA pursuant to 40 CFR 260.20 and 260.22 from Specific Sources Section 721.TABLE C Wastes Excluded by USEPA pursuant to 40 CFR 260.20 and 260.22 from Commercial Chemical Products, Off-Specification Species, Container Residues, and Soil Residues Thereof Section 721.TABLE D Wastes Excluded by the Board by Adjusted Standard Section 721.APPENDIX J Method of Analysis for Chlorinated Dibenzo-p-Dioxins and Dibenzofurans (Repealed) Section 721.APPENDIX Y Table to Section 721.138: Maximum Contaminant Concentration and Minimum Detection Limit Values for Comparable Fuel Specification (Repealed) Section 721.APPENDIX Z Table to Section 721.102: Recycled Materials That Are Solid Waste

AUTHORITY: Implementing Sections 7.2 and 22.4 and authorized by Section 27 of the Environmental Protection Act [415 ILCS 5/7.2, 22.4 and 27].

SOURCE: Adopted in R81-22 at 5 Ill. Reg. 9781, effective May 17, 1982; amended and codified in R81-22 at 6 Ill. Reg. 4828, effective May 17, 1982; amended in R82-18 at 7 Ill. Reg. 2518, effective February 22, 1983; amended in R82-19 at 7 Ill. Reg. 13999, effective October 12, 1983; amended in R84-34, 61 at 8 Ill. Reg. 24562, effective December 11, 1984; amended in R84-9 at 9 Ill. Reg. 11834, effective July 24, 1985; amended in R85-22 at 10 Ill. Reg. 998, effective January 2, 1986; amended in R85-2 at 10 Ill. Reg. 8112, effective May 2, 1986; amended in R86-1 at 10 Ill. Reg. 14002, effective August 12, 1986; amended in R86-19 at 10 Ill. Reg. 20647, effective December 2, 1986; amended in R86-28 at 11 Ill. Reg. 6035, effective March 24, 1987; amended in R86-46 at 11 Ill. Reg. 13466, effective August 4, 1987; amended in R87-32 at 11 Ill. Reg. 16698, effective September 30, 1987; amended in R87-5 at 11 Ill. Reg. 19303, effective November 12, 1987; amended in R87-26 at 12 Ill. Reg. 2456, effective January 15, 1988; amended in R87-30 at 12 Ill. Reg. 12070, effective July 12, 1988; amended in R87-39 at 12 Ill. Reg. 13006, effective July 29, 1988; amended in R88-16 at 13 Ill. Reg. 382, effective December 27, 1988; amended in R89-1 at 13 Ill. Reg. 18300, effective November 13, 1989; amended in R90-2 at 14 Ill. Reg. 14401, effective August 22, 1990; amended in R90-10 at 14 Ill. Reg. 16472, effective September 25, 1990; amended in R90-17 at 15 Ill. Reg. 7950, effective May 9, 1991; amended in R90-11 at 15 Ill. Reg. 9332, effective June 17, 1991; amended in R91-1 at 15 Ill. Reg. 14473, effective September 30, 1991; amended in R91-12 at 16 Ill. Reg. 2155, effective January 27, 1992; amended in R91-26 at 16 Ill. Reg. 2600, effective February 3, 1992; amended in R91-13 at 16 Ill. Reg. 9519, effective June 9, 1992; amended in R92-1 at 16 Ill. Reg. 17666, effective November 6, 1992; amended in R92-10 at 17 Ill. Reg. 5650, effective March 26, 1993; amended in R93-4 at 17 Ill. Reg. 20568, effective November 22, 1993; amended in R93-16 at 18 Ill. Reg. 6741, effective April 26, 1994; amended in R94-7 at 18 Ill. Reg. 12175, effective July 29, 1994; amended in R94-17 at 18 Ill. Reg. 17490, effective November 23, 1994; amended in R95-6 at 19 Ill. Reg. 9522, effective June 27, 1995; amended in R95-20 at 20 Ill. Reg. 10963, effective August 1, 1996; amended in R96-10/R97-3/R97-5 at 22 Ill. Reg. 275, effective December 16, 1997; amended in R98-12 at 22 Ill. Reg. 7615, effective April 15, 1998; amended in R97-21/R98-3/R98-5 at 22 Ill. Reg. 17531, effective September 28, 1998; amended in R98-21/R99-2/R99-7 at 23 Ill. Reg. 1718, effective January 19, 1999; amended in R99-15 at 23 Ill. Reg. 9135, effective July 26, 1999; amended in R00-13 at 24 Ill. Reg. 9481, effective June 20, 2000; amended in R01-3 at 25 Ill. Reg. 1281, effective January 11, 2001; amended in R01-21/R01-23 at 25 Ill. Reg. 9108, effective July 9, 2001; amended in R02-1/R02-12/R02-17 at 26 Ill. Reg. 6584, effective April 22, 2002; amended in R03-18 at 27 Ill. Reg. 12760, effective July 17, 2003; amended in R04-16 at 28 Ill. Reg. 10693, effective July 19, 2004; amended in R05-8 at 29 Ill. Reg. 6003, effective April 13, 2005; amended in R06-5/R06-6/R06-7 at 30 Ill. Reg. 2992, effective February 23, 2006; amended in R06-16/R06-17/R06-18 at 31 Ill. Reg. 791, effective December 20, 2006; amended in R07-5/R07-14 at 32 Ill. Reg. 11786, effective July 14, 2008; amended in R09-3 at 33 Ill. Reg. 986, effective December 30, 2008; amended in R09-16/R10-4 at 34 Ill. Reg. 18611, effective November 12, 2010; amended in R11-2/R11-16 at 35 Ill. Reg. 17734, effective October 14, 2011; amended in R13-5 at 37 Ill. Reg. 3213, effective March 4, 2013; amended in R14-13 at 38 Ill. Reg. 12442, effective May 27, 2014; amended in R15-1 at 39 Ill. Reg. 1607, effective January 12, 2015; amended in R16-7 at 40 Ill. Reg. 11367, effective August 9, 2016; amended in R17-14/R17-15/R18-12/R18-31 at 42 Ill. Reg. 21673, effective November 19, 2018; amended in R19-3 at 43 Ill. Reg. 496, effective December 6, 2018; amended in R19-11 at 43 Ill. Reg. 5884, effective May 2, 2019; amended in R20-8/R20-16 at 44 Ill. Reg. 15142, effective September 3, 2020; amended in R21-13 at 48 Ill. Reg. 9827, effective June 20, 2024.