§ 63.10001 - [Reserved], General Compliance Requirements, Subpart UUUUU - National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units, Part 63 - National Emission Standards for Hazardous Air Pollutants for Source Categories, SubChapter C - Air Programs, Chapter I - Environmental Protection Agency, Title 40 - Protection of Environment, Code of Federal Regulations

2024-05906. Final action; reconsideration of final rule. 2024-05906. National Emission Standards for Hazardous Air Pollutants: Ethylene Production, Miscellaneous Organic Chemical Manufacturing, Organic Liquids Distribution (Non-Gasoline), and Petroleum Refineries Reconsideration
2024-05850. Final rule. 2024-05850. National Emission Standards for Hazardous Air Pollutants: Integrated Iron and Steel Manufacturing Facilities Technology Review
2024-02305. Final rule. 2024-02305. National Emission Standards for Hazardous Air Pollutants: Taconite Iron Ore Processing
2023-26119. Proposed rule. 2023-26119. 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
2023-18696. Final rule. 2023-18696. 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