Air Plan Approval; Ohio; Redesignation of the Ohio Portion of the Cincinnati, Ohio-Kentucky-Indiana Area to Attainment of the 2008 Ozone Standard

The Environmental Protection Agency (EPA) is finding that the Cincinnati, Ohio-Kentucky-Indiana area is attaining the 2008 ozone National Ambient Air Quality Standard (NAAQS or standard) and is redesignating the Ohio portion of the Cincinnati area to attainment for the 2008 ozone NAAQS because the area meets the statutory requirements for redesignation under the Clean Air Act (CAA or Act). The Cincinnati area includes Butler, Clermont, Clinton, Hamilton, and Warren Counties in Ohio; Lawrenceburg Township in Dearborn County, Indiana; and, Boone, Campbell, and Kenton Counties in Kentucky. EPA is also approving, as a revision to the Ohio State Implementation Plan (SIP), the state's plan for maintaining the 2008 ozone standard through 2030 in the Cincinnati area. Finally, EPA finds adequate and is approving the state's 2020 and 2030 volatile organic compound (VOC) and oxides of nitrogen (NOX) Motor Vehicle Emission Budgets (MVEBs) for the Ohio and Indiana portion of the Cincinnati area. The Ohio Environmental Protection Agency (Ohio EPA) submitted the SIP revision and redesignation request on April 21, 2016.