# C1-2025-13893: EPA Approves Pennsylvania Air Plans for Fine Particle Pollution Standards

C1-2025-13893, Air Plan Approval; Pennsylvania; Redesignation Request and Associated Maintenance Plan for the Liberty-Clairton Area for the 1997 Annual and 2006 24-Hour Fine Particulate Matter Standard and Maintenance Plan for the Allegheny County Area for the 2012 Annual Fine Particulate Matter Standard, is a Federal Register rule from Environmental Protection Agency published 2025-08-08, effective 2025-07-24 (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/C1-2025-13893
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: C1-2025-13893
- Title: Air Plan Approval; Pennsylvania; Redesignation Request and Associated Maintenance Plan for the Liberty-Clairton Area for the 1997 Annual and 2006 24-Hour Fine Particulate Matter Standard and Maintenance Plan for the Allegheny County Area for the 2012 Annual Fine Particulate Matter Standard
- Type: Rule
- Agencies: Environmental Protection Agency
- Citation: 90 FR 38406
- Published: 2025-08-08
- Effective: 2025-07-24
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: none
- Last updated: 2026-06-11

## In one line

EPA Approves Pennsylvania Air Plans for Fine Particle Pollution Standards

## Summary

Pennsylvania’s Liberty-Clairton and Allegheny County areas are officially recognized as meeting important air quality standards for tiny particle pollution. This update fixes some dates to July 24, 2025, ensuring the state’s plans to keep the air clean stay on track. Residents and local businesses can breathe easier knowing these improvements are locked in without extra costs or delays.

## Effects PRIA read

- PA areas redesignated as attainment: benefit, medium. If you live or run a business in Liberty‑Clairton or Allegheny County, Pennsylvania, those areas are officially recognized as meeting fine particulate matter standards: Liberty‑Clairton for the 1997 annual and 2006 24‑hour PM2.5 standards, and Allegheny County for the 2012 annual PM2.5 standard. Th…

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## Sources
- [C1-2025-13893 on federalregister.gov](https://www.federalregister.gov/documents/2025/08/08/C1-2025-13893/air-plan-approval-pennsylvania-redesignation-request-and-associated-maintenance-plan-for-the)
- [C1-2025-13893 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-08-08/pdf/C1-2025-13893.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/C1-2025-13893 (as of 2026-06-11).