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Proposed rule

Air Plan Approval; Ohio; Emergency Episodes and Ambient Air Quality Standards

Environmental Protection Agency

Federal Register summary (shortened to 600 characters)

The Environmental Protection Agency (EPA) is proposing to approve amendments to Ohio Administrative Code (OAC) Chapter 3745-25, Emergency Episodes and Ambient Air Quality Standards, into Ohio's State Implementation Plan (SIP). The amendments to the rule include minor style changes, correct typographical errors, and update publication and referenced material titles, effective dates, and addresses.

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Document number
2025-21321
Published
Wed, Nov 26, 2025
Comments close
Fri, Dec 26, 2025Closed
First on the line
Oct 10, 2026, 10:00 PM