Data / Federal rules / 2025-15458

Air Plan Approval; Michigan; Detroit 2010 Sulfur Dioxide Redesignation and Maintenance Plan

The Environmental Protection Agency published this proposed rule in the Federal Register on August 14, 2025. Comments closed on September 15, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is proposing to find that the Detroit, Michigan area is attaining the 2010 sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS) and to act in accordance with a request from Michigan to redesignate the area to attainment for the 2010 SO<INF>2</INF> NAAQS, because the request meets the statutory requirements for redesignation under the Clean Air Act (CAA). EPA is also proposing to approve Michigan's maintenance plan for the Detroit area. Michigan submitted the request for approval of the Detroit nonattainment area's redesignation and maintenance plan on May 5, 2025. EPA approved Michigan's attainment plan for the Detroit area on May 19, 2025.

Key facts

Document number: 2025-15458
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: August 14, 2025
Comments due: September 15, 2025
Dates: Comments must be received on or before September 15, 2025.
Docket: EPA-R05-OAR-2025-0238; FRL-12841-01-R5
Code of Federal Regulations: 40 CFR 52; 40 CFR 81
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Reporting and recordkeeping requirements; Sulfur oxides
Pages: 8

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 August 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.