Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Redesignation of the Harrisburg-Lebanon-Carlisle-York Nonattainment Areas to Attainment for the 1997 Annual and the 2006 24-Hour Fine Particulate Matter Standard

The Environmental Protection Agency (EPA) is approving the Commonwealth of Pennsylvania's requests to redesignate to attainment the Harrisburg-Lebanon-Carlisle-York nonattainment areas (hereafter "the Areas") for the 1997 annual and 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standard (NAAQS). EPA is also determining that the Areas continue to attain the 1997 annual and the 2006 24-hour PM<INF>2.5</INF> NAAQS. EPA is also approving as revisions to the Pennsylvania State Implementation Plan (SIP) the associated maintenance plans to show maintenance of the 1997 annual and 2006 24-hour PM<INF>2.5</INF> NAAQS through 2025 for the Areas. The maintenance plans include the 2017 and 2025 PM<INF>2.5</INF> and nitrogen oxides (NO<INF>X</INF>) mobile vehicle emissions budgets (MVEBs) for the Areas for the 1997 annual and the 2006 24-hour PM<INF>2.5</INF> NAAQS. EPA is finding the 2017 and 2025 PM<INF>2.5</INF> and NO<INF>X</INF> MVEBs adequate for transportation conformity purposes and is finalizing the approval of the budgets. Furthermore, EPA is approving as revisions to the Pennsylvania SIP the 2007 base year emissions inventory for the Areas for the 1997 annual and the 2006 24-hour PM<INF>2.5</INF> NAAQS.