Home / Agencies / EPA / 2026-10768
Final Rule

Designation of Areas for Air Quality Planning Purposes; Michigan; Technical Amendment

Agency
EPA
Document Number
2026-10768
Published
May 29, 2026
Effective Date
June 29, 2026

Abstract

The Detroit, Michigan area was redesignated to attainment of the 2015 ozone National Ambient Air Quality Standards (NAAQS) on May 19, 2023. On December 5, 2025, the United States Court of Appeals for the Sixth Circuit vacated the Environmental Protection Agency's (EPA's) redesignation of the Detroit area. Therefore, pursuant to the Court's decision, the EPA is making a technical amendment to the part 81 listing for the Detroit area to reflect the area's designation as nonattainment for the 2015 ozone NAAQS, with a classification of Moderate.

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 2026-10768 Federal Register document?
Document 2026-10768 is a Final Rule published by the Environmental Protection Agency in the Federal Register on May 29, 2026, with an effective date of June 29, 2026. The Detroit, Michigan area was redesignated to attainment of the 2015 ozone National Ambient Air Quality Standards (NAAQS) on May 19, 2023. On December 5, 2025, the United States Court of Appeals for the Sixth Circuit vacated the Environmental Protection Agency's (EPA's) redesignation of the Detroit area. Therefore, pursuant to the Court's decision, the EPA is making a technical amendment to the part 81 listing for the Detroit area to reflect the area's designation as nonattainment for the 2015 ozone NAAQS, with a classification of Moderate. View the original at https://www.federalregister.gov/documents/2026/05/29/2026-10768/designation-of-areas-for-air-quality-planning-purposes-michigan-technical-amendment.
Is document 2026-10768 an economically significant rule?
No. Document 2026-10768 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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