Determination of Attainment, Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Indiana; Redesignation of the Evansville Area To Attainment of the 8-Hour Ozone Standard

EPA is determining that the Evansville 8-hour ozone nonattainment area (Evansville area) has attained the 8-hour ozone National Ambient Air Quality Standard (NAAQS). The Evansville area includes Vanderburgh and Warrick Counties. EPA is approving a request from the State of Indiana, submitted on June 2, 2005, to redesignate the Evansville area from nonattainment to attainment for the 8-hour ozone NAAQS. EPA's approval of the redesignation request is based on the determination that the Evansville area and the State of Indiana have met the criteria for redesignation to attainment set forth in the Clean Air Act (CAA), including the determination that the Evansville area has attained the 8-hour ozone standard. In conjunction with this approval, EPA is approving the State's plan for maintaining the 8-hour ozone NAAQS in the Evansville area through 2015 as a revision to the Indiana State Implementation Plan (SIP). EPA also finds as adequate and approves the 2015 Volatile Organic Compounds (VOC) and Nitrogen Oxides (NO<INF>X</INF>) Motor Vehicle Emission Budgets (MVEBs) for the Evansville area contained in the Evansville area ozone maintenance plan.