Air Plan Approval; Michigan; Redesignation and Maintenance Plan for the Partial St. Clair 2010 1-Hour Sulfur Dioxide (SO2) NAAQS Nonattainment Area
Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register July 9, 2026. Document 2026-13843. Updated Nov. 8, 2026.
- What it does
The Environmental Protection Agency (EPA) is taking final action to redesignate the St. Clair nonattainment area in southeast Michigan to attainment for the 2010 sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS). The EPA is also approving Michigan's maintenance plan for the St. Clair SO<INF>2</INF> nonattainment area and emissions limits for the DTE Belle River Power Plant. Michigan submitted the request for approval of the St. Clair area redesignation and maintenance plan on December 14, 2023, with a supplement to the request on July 24, 2025. The EPA proposed to approve this action on April 10, 2026, and received no adverse comments.
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:
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 243 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 July 9, 2026.
The agency's dates, word for word.
The record as published
| Document number | 2026-13843 |
|---|---|
| Action | Final rule. |
| Agencies | Environmental Protection Agency |
| Published | July 9, 2026 |
| Effective date | July 9, 2026 |
| Docket | EPA-R05-OAR-2023-0635 |
Source: the Federal Register (public domain). The document in the Federal Register