Environmental Protection Agency October 11, 2012 – Federal Register Recent Federal Regulation Documents

EPA is taking final action to partially approve and partially disapprove revisions to the State Implementation Plans (SIPs) for Florida, Mississippi, and South Carolina submitted on September 23, 2009, October 6, 2009, and September 18, 2009, respectively. EPA is approving the determinations, contained in those submittals, that the existing SIPs for Florida, Mississippi, and South Carolina are adequate to meet the obligation under section 110(a)(2)(D)(i)(I) of the Clean Air Act (CAA or Act) to address interstate transport requirements with regard to the 2006 24-hour particulate matter (PM2.5) national ambient air quality standard (NAAQS). Specifically, the interstate transport requirements contained in section 110(a)(2)(D)(i)(I) of the CAA prohibit a state's emissions from significantly contributing to nonattainment or interfering with the maintenance of the NAAQS in any other state. EPA is approving the States' determinations that their existing SIPs satisfy this requirement and conclusion that additional control measures are not necessary under section 110(a)(2)(D)(i)(I) because emissions from Florida, Mississippi and South Carolina do not contribute significantly to nonattainment or interfere with maintenance of the 2006 24-hour PM2.5 NAAQS in any other state. EPA is also disapproving the SIP submissions from Florida, Mississippi and South Carolina to the extent that they rely on the Clean Air Interstate Rule (CAIR) to meet the 110(a)(2)(D)(i)(I) requirements for the 2006 24-hour PM2.5 NAAQS. Because CAIR does not address the 2006 PM2.5 NAAQS, it cannot be relied upon to satisfy any requirements related to that NAAQS.