Air Plan Approval and Air Quality Designation; KY; Redesignation of the Kentucky Portion of the Louisville, KY-IN 2015 8-Hour Ozone Nonattainment Area to Attainment

On September 6, 2022, the Commonwealth of Kentucky, through the Kentucky Energy and Environment Cabinet (Cabinet), Division of Air Quality (DAQ), submitted a request for the Environmental Protection Agency (EPA) to redesignate the Kentucky portion (hereinafter referred to as the "Louisville, KY Area" or "Area") of the Louisville, Kentucky-Indiana, 2015 8-hour ozone nonattainment area (hereinafter referred to as the "Louisville, KY-IN Area") to attainment for the 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS or standards) and to approve a State Implementation Plan (SIP) revision containing a maintenance plan for the Area. EPA is proposing to approve the Commonwealth's plan for maintaining attainment of the 2015 8-hour ozone standard in the Louisville, KY-IN Area, including the regional motor vehicle emission budgets (MVEBs) for nitrogen oxides (NO<INF>X</INF>) and volatile organic compounds (VOC) for the years of 2019 and 2035 for the Louisville, KY-IN Area, to incorporate the maintenance plan into the SIP, and to redesignate the Area to attainment for the 2015 8-hour ozone NAAQS. EPA previously approved the redesignation request and maintenance plan for the Indiana portion of the Louisville, KY-IN Area. EPA is also notifying the public of the status of EPA's adequacy determination for the MVEBs for the Area.