The Environmental Protection Agency (EPA) is approving 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. The EPA is approving 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). The EPA is also finding adequate and approving the motor vehicle emission budgets for each area. This approval makes certain commitments related to maintenance of the 2008 ozone NAAQS in these areas federally enforceable as part of the Ohio SIP.