Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Revised Motor Vehicle Emission Budgets for the York-Adams Counties 8-Hour Ozone Maintenance Area

EPA is taking direct final action to approve a State Implementation Plan (SIP) revision submitted by the Commonwealth of Pennsylvania. The revision amends the 8-hour ozone maintenance plan for the York-Adams Counties 8-Hour Ozone Maintenance Area (the Area). This revision amends the maintenance plan's 2009 and 2018 motor vehicle emissions budgets (MVEBs) by unequally dividing the existing approved MVEBs which covers the entire maintenance area into two sub-regional MVEBs, one set of MVEBs for each county comprising the area. The revised plan continues to demonstrate maintenance of the 8-hour national ambient air quality standard (NAAQS) for ozone. EPA is approving this SIP revision to the Pennsylvania maintenance plan for York-Adams in accordance with the requirements of the Clean Air Act (CAA).