Approval and Promulgation of Implementation Plans and Designation of Areas; North Carolina; Redesignation of the Charlotte-Rock Hill, 2008 8-Hour Ozone Nonattainment Area to Attainment

The Environmental Protection Agency (EPA) is taking three separate final actions related to a state implementation plan (SIP) revision submitted by the State of North Carolina, through the North Carolina Department of Environment and Natural Resources, Department of Air Quality (NC DAQ), on April 16, 2015. These final actions are for the North Carolina portion of the bi-state Charlotte-Rock Hill, North Carolina-South Carolina 2008 8-hour ozone nonattainment area (hereinafter referred to as the ``bi-state Charlotte Area'' or ``Area''). The bi-state Charlotte Area consists of Mecklenburg County in its entirety and portions of Cabarrus, Gaston, Iredell, Lincoln, Rowan and Union Counties, North Carolina; and a portion of York County, South Carolina. Regarding South Carolina's request to redesignate the South Carolina portion of the Area and its maintenance plan for the 2008 8-hour ozone NAAQS, EPA will address this in a separate action. In the three actions for the North Carolina bi-state Charlotte Area, EPA determines that the bi-state Charlotte Area is attaining the 2008 8- hour ozone National Ambient Air Quality Standards (NAAQS); approves and incorporates the State's plan for maintaining attainment of the 2008 8- hour ozone standard in the Area, including the 2014 and 2026 sub-area motor vehicle emission budgets (MVEBs) for nitrogen oxides (NOX) and volatile organic compounds (VOC) for the North Carolina portion of this Area into the SIP; and redesignates the North Carolina portion of the bi-state Charlotte Area to attainment for the 2008 8-hour ozone NAAQS. Additionally, EPA finds the 2014 and 2026 sub- area MVEBs for the North Carolina portion of the bi-state Charlotte Area adequate for the purposes of transportation conformity.