The Environmental Protection Agency (EPA) is taking final action to approve a State Implementation Plan (SIP) revision submitted by the North Carolina Department of Environmental Quality, Division of Air Quality (DAQ), on July 25, 2018, which revises the model year coverage for vehicles in the 22 counties subject to North Carolina's expanded inspection and maintenance (I/M) program. The SIP revision also includes a demonstration that the requested revision to the vehicle model year coverage will not interfere with attainment or maintenance of any national ambient air quality standards (NAAQS) or with any other applicable requirements of the Clean Air Act (CAA or Act). In addition, North Carolina's July 25, 2018, SIP revision updates the State's maintenance plan and associated motor vehicle emissions budgets (MVEBs) used in transportation conformity for the North Carolina portion of the Charlotte-Rock Hill, NC-SC 2008 8-hour ozone nonattainment area (hereafter also referred to as the "Area" or the "Charlotte Area") to reflect the change in vehicle model year coverage for the I/M program. EPA has determined that North Carolina's July 25, 2018, SIP revision will not interfere with and is consistent with the applicable provisions of the Clean Air Act (CAA or Act).