Air Plan Approval; Alabama: Infrastructure Requirements for the 2012 PM2.5

The Environmental Protection Agency (EPA) is proposing to approve portions of the December 9, 2015, State Implementation Plan (SIP) submission, submitted by the State of Alabama, through the Alabama Department of Environmental Management (ADEM), for inclusion into the Alabama SIP. This proposal pertains to the infrastructure requirements of the Clean Air Act (CAA or Act) for the 2012 annual particulate matter (PM 2.5 ) national ambient air quality standard (NAAQS). The CAA requires that each state adopt and submit a SIP for the implementation, maintenance and enforcement of each NAAQS promulgated by EPA, which is commonly referred to as an ``infrastructure SIP.'' ADEM certified that the Alabama SIP contains provisions that ensure the 2012 Annual PM 2.5  NAAQS is implemented, enforced, and maintained in Alabama. EPA is proposing to determine that Alabama's infrastructure SIP submission provided to EPA on December 9, 2015, satisfies certain required infrastructure elements for the 2012 Annual PM 2.5  NAAQS.