| Proposed Regulations |
40 CFR 52 - Air Plan Revisions; Arizona; Maricopa County Air Quality Department
| 11/08/2024 | National |
| Notices |
Notice of Pending Approval for Other Use of Phosphogypsum; Extension of Public Comment Period
| 11/08/2024 | National |
| Final Regulations |
40 CFR 52 - Air Plan Approval; California; South Coast Air Quality Management District
| 10/21/2024 | National |
| Final Regulations |
40 CFR 63 - Review of Final Rule Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act
| 09/10/2024 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants From Hazardous Waste Combustors Malfunction and Electronic Reporting Amendments; Extension of Comment Period
| 09/05/2024 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants From Hazardous Waste Combustors Malfunction and Electronic Reporting Amendments
| 07/24/2024 | National |
| Final Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Lime Manufacturing Plants Technology Review
| 07/16/2024 | National |
| Final Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants for Coke Ovens: Pushing, Quenching, and Battery Stacks, and Coke Oven Batteries; Residual Risk and Technology Review, and Periodic Technology Review; Final Rule
| 07/05/2024 | National |
| Final Regulations |
40 CFR 61 and 63 - Tennessee; National Emission Standards for Hazardous Air Pollutants; National Emission Standards for Hazardous Air Pollutants for Source Categories; Supplemental Delegations of Authority
| 06/27/2024 | National |
| Proposed Regulations |
40 CFR Parts 60 and 63 - Removal of Affirmative Defense Provisions From Specified New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants
| 06/24/2024 | National |
| Final Regulations |
40 CFR 61 and 63 - Approval of the Clean Air Act, Section 112(l), Authority for Hazardous Air Pollutants: Asbestos Management and Control; State of New Hampshire Department of Environmental Services
| 05/24/2024 | National |
| Final Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Primary Copper Smelting Residual Risk and Technology Review and Primary Copper Smelting Area Source Technology Review; Final Rule
| 05/13/2024 | National |
| Final Regulations |
40 CFR 60 and 63 - National Emission Standards for Hazardous Air Pollutants: Gasoline Distribution Technology Reviews and New Source Performance Standards Review for Bulk Gasoline Terminals; Final Rule
| 05/08/2024 | National |
| Final Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units Review of the Residual Risk and Technology Review; Final Rule
| 05/07/2024 | National |
| Proposed Regulations |
40 CFR 63 - Petition To Remove the Stationary Combustion Turbines Source Category From the List of Categories of Major Sources of Hazardous Air Pollutants
| 04/16/2024 | National |
| Final Regulations |
40 CFR Parts 60 and 63: National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review; Final Rule
| 04/05/2024 | National |
| Final Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Ethylene Production, Miscellaneous Organic Chemical Manufacturing, Organic Liquids Distribution (Non-Gasoline), and Petroleum Refineries Reconsideration
| 04/04/2024 | National |
| Final Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Integrated Iron and Steel Manufacturing Facilities Technology Review; Final Rule
| 04/03/2024 | National |
| Final Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Taconite Iron Ore Processing; Final Rule
| 03/06/2024 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Lime Manufacturing Plants Amendments
| 02/09/2024 | National |
| Proposed Regulations |
40 CFR 63 - Removal of Affirmative Defense Provisions From the National Emission Standards for Hazardous Air Pollutants for the Oil and Natural Gas Production Facility and Natural Gas Transmission and Storage Facility Source Categories
| 12/01/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Rubber Tire Manufacturing
| 11/16/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Integrated Iron and Steel Manufacturing Facilities Technology Review; Extension of Comment Period
| 09/14/2023 | National |
| Proposed Regulations |
40 CFR 63 - Regulatory Requirements for New HAP Additions
| 09/13/2023 | National |
| Final Regulations |
40 CFR 63 - Approval of the Clean Air Act, Authority for Hazardous Air Pollutants: Air Emissions Standards for Halogenated Solvent Cleaning Machines; State of Rhode Island Department of Environmental Management
| 09/01/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Primary Copper Smelting; Extension of Comment Period
| 08/23/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants for Coke Ovens: Pushing, Quenching, and Battery Stacks, and Coke Oven Batteries; Residual Risk and Technology Review, and Periodic Technology Review; Proposed Rule
| 08/16/2023 | National |
| Proposed Regulations |
40 CFR 2 and 51 - Revisions to the Air Emissions Reporting Requirements; Proposed Rule
| 08/09/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Integrated Iron and Steel Manufacturing Facilities Technology Review
| 07/31/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Primary Copper Smelting
| 07/24/2023 | National |
| Proposed Regulations |
40 CFR 60 and 63 - Extended Comment Period for Proposed New Rule
| 06/26/2023 | National |
| Proposed Regulations |
40 CFR 60 and 63 - National Emission Standards for Hazardous Air Pollutants: Reciprocating Internal Combustion Engines and New Source Performance Standards: Internal Combustion Engines; Electronic Reporting
| 06/26/2023 | National |
| Proposed Regulations |
40 CFR 52 - Air Plan Approval; Rhode Island; Organic Solvent Cleaning Regulation
| 06/23/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Plywood and Composite Wood Products; Extension of Comment Period
| 06/12/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review; Extension of Comment Period
| 06/01/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Plywood and Composite Wood Products; Proposed Rule
| 05/18/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Taconite Iron Ore Processing Amendments
| 05/15/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Ethylene Production, Miscellaneous Organic Chemical Manufacturing, Organic Liquids Distribution (Non-Gasoline), and Petroleum Refineries Reconsideration
| 04/27/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units Review of the Residual Risk and Technology Review; Proposed Rule
| 04/24/2023 | National |
| Proposed Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review; Proposed Rule
| 04/13/2023 | National |