On December 11, 2015, the State of Mississippi, through the Mississippi Department of Environment Quality (MDEQ), submitted a request for the Environmental Protection Agency (EPA) to redesignate the portion of Mississippi that is within the Memphis, Tennessee- Mississippi-Arkansas (Memphis, TN-MS-AR) 2008 8-hour ozone nonattainment area (hereafter referred to as the "Memphis, TN-MS-AR Area" or "Area") and a related State Implementation Plan (SIP) revision containing a maintenance plan for the Area. EPA is taking the following separate final actions related to the December 11, 2015, redesignation request and SIP revision: Determining that the Memphis, TN-MS-AR Area is attaining the 2008 8-hour ozone national ambient air quality standards (NAAQS); approving the State's plan for maintaining attainment of the 2008 8-hour ozone NAAQS in the Area, including the motor vehicle emission budgets (MVEBs) for nitrogen oxides (NO<INF>X</INF>) and volatile organic compounds (VOC) for the year 2027 for the Mississippi portion of the Area, into the SIP; and redesignating the Mississippi portion of the Area to attainment for the 2008 8-hour ozone NAAQS. Additionally, EPA finds the 2027 MVEBs for the Mississippi portion of the Area adequate for the purposes of transportation conformity.