Data / Federal rules / 2025-20372

Approval of the Clean Air Act, Section 112(l), Authority for Hazardous Air Pollutants; State of Connecticut Department of Energy and Environmental Protection; Approval of the Clean Air Act Section 502, State Operating Permit Programs, State of Connecticut Department of Energy and Environmental Protection

The Environmental Protection Agency published this final rule in the Federal Register on November 20, 2025. It took effect on December 22, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is approving regulatory amendments that revise two previous program approvals from the Connecticut Department of Energy and Environmental Protection (CT DEEP). The revisions include amendments to the Regulations of Connecticut State Agencies (RCSA) that revise the Connecticut State Operating Permit Program and amendments to RCSA that revise limitations on potential to emit Clean Air Act (CAA) pollutants. A significant aspect of this action involves revising the definition of "hazardous air pollutant" in the RCSA in response to EPA adding 1-bromopropane to the list of hazardous air pollutants (HAPs). This action is being taken under the Clean Air Act.

Key facts

Document number: 2025-20372
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: November 20, 2025
Takes effect: December 22, 2025
Dates: This rule is effective on December 22, 2025.
Docket: EPA-R01-OAR-2025-0655; FRL-12924-02-R1
Code of Federal Regulations: 40 CFR 70
Topics: Acid rain; Administrative practice and procedure; Air pollution control; Environmental protection; Hazardous substances; Intergovernmental relations; Licensing and registration; Reporting and recordkeeping requirements
Pages: 3

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on acid rain · Rules on administrative practice and procedure · Rules on air pollution control · Published in November 2025

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.