Approval and Promulgation of Air Quality Implementation Plans; Ohio; Redesignation of the Dayton-Springfield Area to Attainment of the 1997 Annual Standard for Fine Particulate Matter

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EPA is granting, under the Clean Air Act (CAA), the State of Ohio's June 1, 2011, request to redesignate the Dayton-Springfield (Dayton) nonattainment area (Clark, Greene, and Montgomery Counties) to attainment for the 1997 annual national ambient air quality standard (NAAQS or standard) for fine particulate matter (PM 2.5 ). EPA is approving the related state implementation plan (SIP) elements including comprehensive emissions inventories, the maintenance plan, and the motor vehicle emissions budgets (MVEBs). EPA has determined that the area has attained the standard and proposed to approve Ohio's request on July 26, 2013.