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

What it does

The Environmental Protection Agency (EPA) is finding that the Detroit, Michigan area is attaining the 2010 sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS) and is acting in accordance with a request from the Michigan Department of Environment, Great Lakes, and Energy (EGLE) 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). The EPA is also approving 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. The EPA approved Michigan's attainment plan for the Detroit area on May 19, 2025.

The Environmental Protection Agency's summary, as published in the Federal Register.

What changed in the regulation

2 parts of Title 40 of the Code of Federal Regulations:

40 CFR 52, 40 CFR 81

Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).

Compared with

The Environmental Protection Agency has published 245 final rules in 2026 so far, compared with 263 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

What happens next and when

This final rule is effective on April 2, 2026.

The agency's dates, word for word.

Check it yourself

• The document in the Federal Register
• Docket EPA-R05-OAR-2025-0238 on Regulations.gov
• Title 40 on eCFR

The record as published

Source: the Federal Register (public domain). The document in the Federal Register