Air Plan Approval; Ohio; Muskingum River 2010 Sulfur Dioxide Redesignation and Maintenance Plan

What it does

The Environmental Protection Agency (EPA) finds that the Muskingum River sulfur dioxide (SO<INF>2</INF>) nonattainment area, located in Center Township in Morgan County and Waterford Township in Washington County, Ohio, (hereafter referred to as "Muskingum River area") is attaining the 2010 SO<INF>2</INF> National Ambient Air Quality Standard (NAAQS). The EPA is acting in accordance with Ohio's March 31, 2025, request to redesignate the Muskingum River area from nonattainment 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 Ohio's maintenance plan for the area and Ohio's Director's Final Findings and Orders (DFFOs) issued to Globe Metallurgical, Inc. (Globe Metallurgical) on March 26, 2025, as part of Ohio's federally enforceable State Implementation plan (SIP).

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-2025-0165 on Regulations.gov
• Title 40 on eCFR

The record as published

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