Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Attainment Plan for the Lower Beaver Valley Nonattainment Area for the 2008 Lead National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania (Pennsylvania). The revision demonstrates attainment of the 2008 lead national ambient air quality standards (NAAQS) in the Lower Beaver Valley nonattainment area (Lower Beaver Valley Area or Area). The attainment plan includes the base year emissions inventory, an analysis of reasonably available control technology (RACT), reasonably available control measures (RACM) and reasonable further progress (RFP), a modeling demonstration of attainment, and contingency measures for the Area. EPA is approving Pennsylvania's lead attainment plan for the Lower Beaver Valley Area as a revision to Pennsylvania's SIP in accordance with the requirements of the Clean Air Act (CAA).