Approval and Promulgation of Implementation Plans; Alabama 110(a)(1) and (2) Infrastructure Requirements for the 1997 and 2006 Fine Particulate Matter National Ambient Air Quality Standards

EPA is taking final action to approve the State Implementation Plan (SIP) submission, submitted by the State of Alabama, through the Alabama Department of Environmental Management (ADEM), as demonstrating that the State meets certain state implementation plan (SIP) requirements of sections 110(a)(1) and (2) of the Clean Air Act (CAA or the Act) for the 1997 annual and 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS). Section 110(a) of 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. Alabama certified that the Alabama SIP contains provisions that ensure the 1997 annual and 2006 24-hour PM<INF>2</INF> NAAQS are implemented, enforced, and maintained in Alabama (hereafter referred to as "infrastructure submission"). Alabama's infrastructure submissions, provided to EPA on July 25, 2008, and September 23, 2009, addressed all the required infrastructure elements for the 1997 annual and 2006 24-hour PM<INF>2.5</INF> NAAQS with the exception of sections 110(a)(2)(D)(i) and (E)(ii), which will be addressed in separate actions.