40 CFR § 63.64 National Emission Standards for Hazardous Air Pollutants for Source Categories

§ 63.64 Additions of substances to the list of hazardous air pollutants.

Current through Aug 22, 2025 · Read all of Part 63

⚠ 11 pending changes to Part 63

Review of National Emission Standards for Hazardous Air Pollutants From Secondary Lead Smelting Technology Review; Reopening of Comment Period
Proposed Rule · Environmental Protection Agency
National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Reconsideration; Extension of Comment Period
Proposed Rule · Environmental Protection Agency
National Emission Standards for Hazardous Air Pollutants: National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration; Extension of Comment Period
Proposed Rule · Environmental Protection Agency
Petition To Delist Hazardous Air Pollutant: 2-Butoxyethyl Benzoate (2-BEB)
Proposed Rule · Environmental Protection Agency
Approval of Missouri's Request for Partial Program Delegation of Clean Air Act Section 112(r) Prevention of Accidental Release Program
Proposed Rule · Environmental Protection Agency
National Emission Standards for Marine Tank Vessel Loading Operations: Technology Review
Proposed Rule · Environmental Protection Agency
National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Reconsideration
Proposed Rule · Environmental Protection Agency
National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration
Proposed Rule · Environmental Protection Agency
National Emission Standards for Hazardous Air Pollutants for Gasoline Distribution Facilities and Standards of Performance for Bulk Gasoline Terminals Reconsideration
Proposed Rule · comments close Nov 12, 2026 · Environmental Protection Agency
New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Northwest Clean Air Agency, Washington State
Proposed Rule · comments close Nov 18, 2026 · Environmental Protection Agency

(a) The substance 1-bromopropane, or 1-BP, also known as n-propyl bromide or nPB (CAS No. 106-94-5) is added to the list of hazardous air pollutants established by Clean Air Act (CAA) section 112(b)(1), 42 U.S.C. 7412(b)(1).

(b) [Reserved]

[87 FR 396, Jan. 5, 2022]