Environmental Protection Agency · EPA-HQ-OAR-2024-0303
National Emission Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Sources Technology Review
The Federal Register published the matched proposal on January 22, 2025 and the matched final rule on April 1, 2026, 434 days later.
- Comment dates in the record. March 24, 2025 → April 14, 2025. See the individual notices below.
Official publication history
Proposal ·
National Emission Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Sources Technology Review
Comment date listed March 24, 2025
Comment period update ·
National Emission Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Sources Technology Review; Comment Period Extension
Comment date listed April 14, 2025
Final rule ·
National Emission Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Sources Technology Review
Effective date in register data April 1, 2026
About this timeline
How the records were matched
America.co links a proposed rule and a later final rule when the Federal Register records share the exact docket identifier and lead agency. This snapshot covers records published from January 1, 2025 to November 10, 2026.
A docket can hold more than one regulatory action. Dates here are dates listed in individual notices. Later corrections, court actions, other dockets and records outside the date window may change what applies. Follow the official documents for the full text and effective dates.
Federal Register data source · Search Regulations.gov · Download this snapshot