Home / Agencies / EPA / 2026-07399
Final Rule

Air Plan Approval; Pennsylvania; Redesignation Request for the Allegheny County Area for the 2012 Annual Fine Particulate Matter Standard

Agency
EPA
Document Number
2026-07399
Published
April 16, 2026
Effective Date
May 18, 2026

Abstract

The Environmental Protection Agency (EPA) is approving the Commonwealth of Pennsylvania's request to redesignate the Allegheny County, Pennsylvania nonattainment area (Allegheny County Area) to attainment for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or standard). The redesignation request was submitted by the Commonwealth of Pennsylvania Department of Environmental Protection (PADEP or Pennsylvania) on behalf of the Allegheny County Health Department (ACHD). This action is being taken under the CAA.

Federal Register Source

This document is published by the Office of the Federal Register, National Archives and Records Administration. Access the full regulatory text, preamble, and docket comments below.

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Frequently Asked Questions

What is the 2026-07399 Federal Register document?
Document 2026-07399 is a Final Rule published by the Environmental Protection Agency in the Federal Register on April 16, 2026, with an effective date of May 18, 2026. The Environmental Protection Agency (EPA) is approving the Commonwealth of Pennsylvania's request to redesignate the Allegheny County, Pennsylvania nonattainment area (Allegheny County Area) to attainment for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or standard). The redesignation request was submitted by the Commonwealth of Pennsylvania Department of Environmental Protection (PADEP or Pennsylvania) on behalf of the Allegheny County Health Department (ACHD). This action is being taken under the CAA. View the original at https://www.federalregister.gov/documents/2026/04/16/2026-07399/air-plan-approval-pennsylvania-redesignation-request-for-the-allegheny-county-area-for-the-2012.
Is document 2026-07399 an economically significant rule?
No. Document 2026-07399 is not classified as economically significant under Executive Order 12866. Economically significant rules require OIRA review and are estimated to have impacts of $100 million or more per year.

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