Data / Federal rules / 2025-12527

Air Plan Approval; West Virginia; Regional Haze State Implementation Plan for the Second Implementation Period

The Environmental Protection Agency published this final rule in the Federal Register on July 7, 2025. It took effect on August 6, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is approving the regional haze State implementation plan (SIP) revision submitted by West Virginia (West Virginia, WV, or the State) on August 12, 2022, to address applicable requirements under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the regional haze program's second implementation period. The EPA is taking this action pursuant to the CAA.

Key facts

Document number: 2025-12527
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: July 7, 2025
Takes effect: August 6, 2025
Dates: This final rule is effective on August 6, 2025.
Docket: EPA-R03-OAR-2025-0174; FRL-12731-02-R3
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen dioxide; Ozone; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 5

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on environmental protection · Rules on incorporation by reference · Published in July 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.