Data / Federal rules / 2025-20096

Air Plan Approval; Pennsylvania; Redesignation of the Beaver County Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard

The Environmental Protection Agency published this final rule in the Federal Register on November 18, 2025. It took effect on December 18, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is approving both a redesignation request and state implementation plan (SIP) revision submitted on August 12, 2024 by the Commonwealth of Pennsylvania. The request asked the EPA to redesignate the Beaver County, Pennsylvania area (Beaver County Area) from nonattainment to attainment for the 2010 1-hour primary sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS), while the SIP revision included Beaver County's maintenance plan for the 2010 1-hour primary SO<INF>2</INF> standard for the Beaver County Area. The EPA is approving this redesignation of the Beaver County Area from nonattainment to attainment for the 2010 SO<INF>2</INF> NAAQS and the revision to the Pennsylvania SIP in accordance with the requirements of the Clean Air Act (CAA).

Key facts

Document number: 2025-20096
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: November 18, 2025
Takes effect: December 18, 2025
Dates: This final rule is effective on December 18, 2025.
Docket: EPA-R03-OAR-2024-0624; FRL-12500-02-R3
Code of Federal Regulations: 40 CFR 52; 40 CFR 81
Topics: Air pollution control; Carbon monoxide; Environmental protection; Incorporation by reference; Intergovernmental relations; Lead; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 3

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on carbon monoxide · Rules on environmental protection · Published in November 2025

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