Data / Federal rules / 2025-20496

Operating Permit Program Approval; New Hampshire; Revised Definitions

The Environmental Protection Agency published this proposed rule in the Federal Register on November 20, 2025. Comments closed on December 22, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is proposing to approve revisions to the State of New Hampshire's Clean Air Act (CAA) title V operating permit program. These revisions amend the definitions of "hazardous air pollutant" and "regulated air pollutant" in New Hampshire regulations to remain consistent with Federal permitting and air toxics requirements in accordance with the CAA.

Key facts

Document number: 2025-20496
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: November 20, 2025
Comments due: December 22, 2025
Dates: Written comments must be received on or before December 22, 2025.
Docket: EPA-R01-OAR-2025-1608; FRL-13018-01-R1
Code of Federal Regulations: 40 CFR 70
Topics: Acid rain; Administrative practice and procedure; Air pollution control; Environmental protection; Hazardous substances; Incorporation by reference; Intergovernmental relations; Licensing and registration; Reporting and recordkeeping requirements
Pages: 2

The document on federalregister.gov PDF

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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.