The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Vermont that addresses the infrastructure SIP requirements of the Clean Air Act (CAA or Act)--including the interstate transport provisions--for the 2012 fine particle (PM<INF>2.5</INF>) National Ambient Air Quality Standards (NAAQS). The infrastructure requirements are designed to ensure that the structural components of each state's air quality management program are adequate to meet the state's responsibilities under the CAA. EPA is taking this action under the Clean Air Act.