Data / Federal rules / 2025-08728

Air Plan Approval; Ohio; Second Maintenance Plan for 2008 Ozone NAAQS

The Environmental Protection Agency published this proposed rule in the Federal Register on May 19, 2025. Comments closed on June 18, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Ohio State Implementation Plan (SIP). On November 6, 2024, the Ohio Environmental Protection Agency (Ohio EPA) submitted the state's plans for maintaining the 2008 ozone National Ambient Air Quality Standard (NAAQS or standard) in the Columbus, Ohio; Cleveland-Akron-Lorain, Ohio; and Cincinnati, Ohio-Kentucky-Indiana areas. EPA is proposing to approve these maintenance plans because they provide for the maintenance of the 2008 ozone NAAQS for each area for 10 additional years as required by the Clean Air Act (CAA). EPA is also initiating the adequacy review process for motor vehicle emission budgets (Budgets) for each area. This action, if finalized, would make certain commitments related to maintenance of the 2008 ozone NAAQS in these areas federally enforceable as part of the Ohio SIP.

Key facts

Document number: 2025-08728
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: May 19, 2025
Comments due: June 18, 2025
Dates: Comments must be received on or before June 18, 2025.
Docket: EPA-R05-OAR-2024-0537; EPA-R05-OAR-2024-0538; EPA-R05-OAR-2024-0539; FRL-12534-01-R5
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen oxides; Ozone; Reporting and recordkeeping requirements; Volatile organic compounds
Pages: 10

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 May 2025

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