Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Approval of VOC and NOX RACT Determinations for Merck and Company, Inc

EPA is taking direct final action to approve revisions to the Commonwealth of Pennsylvania's State Implementation Plan (SIP). The revisions were submitted by the Pennsylvania Department of Environmental Protection (PADEP) to establish and require reasonably available control technology (RACT) for Merck and Company, Inc.'s (Merck's) West Point facility located in Montgomery County, Pennsylvania. Merck's West Point facility is a major source of volatile organic compounds (VOC) and nitrogen oxides ( NO<INF>X</INF>). The intent of this action is to approve the Commonwealth's RACT determinations for VOC and NO<INF>X</INF> at Merck's West Point facility located in Montgomery County. EPA is approving this SIP revision in accordance with the Clean Air Act.