Approval and Promulgation of Air Quality Implementation Plans; Virginia; Redesignation of the Shenandoah National Park Ozone Nonattainment Area To Attainment and Approval of the Area's Maintenance Plan

EPA is approving a redesignation request and a State Implementation Plan (SIP) revision submitted by the Commonwealth of Virginia. The Virginia Department of Environmental Quality (VADEQ) is requesting that the Shenandoah National Park area (the SNP area) be redesignated as attainment for the 8-hour ozone national ambient air quality standard (NAAQS). In conjunction with its redesignation request, the Commonwealth submitted a SIP revision consisting of a maintenance plan for the SNP area that provides for continued attainment of the 8-hour ozone NAAQS for the next 10 years. EPA is also approving the adequacy determination for the motor vehicle emission budgets (MVEBs) that are identified in the 8-hour maintenance plan for the SNP area for purposes of transportation conformity, and is approving those MVEBs. EPA is approving the redesignation request and the maintenance plan revision to the Virginia SIP in accordance with the requirements of the CAA.