Approval and Promulgation of Implementation Plans; North Carolina: Approval of Revisions to the 1-Hour Ozone Maintenance Plan for the Raleigh/Durham and Greensboro/Winston-Salem/High Point Areas

EPA is taking direct final action to approve a February 4, 2008, revision to the State Implementation Plan (SIP) submitted by the North Carolina Department of Environment and Natural Resources (NCDENR) on behalf of the State of North Carolina for the purpose of revising the subarea motor vehicle emissions budgets (MVEBs) for the Greensboro/ Winston-Salem/High Point area. The Greensboro/Winston-Salem/High Point 1-hour ozone maintenance area (hereafter referred to as the "Triad Area") is comprised of Davidson, Forsyth, and Guilford Counties and a portion of Davie County. The revisions to the subarea MVEBs are approvable because of an available safety margin for volatile organic compounds (VOC) and nitrogen oxides (NO<INF>X</INF>) for this Area.