Approval of Implementation Plans and Designation of Areas; Georgia; Redesignation of the Georgia Portion of the Chattanooga, 1997 PM2.5 Nonattainment Area to Attainment

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On September 14, 2012, the Georgia Department of Natural Resources, through the Georgia Environmental Protection Division (GA EPD), submitted a request to redesignate the Georgia portion of the Chattanooga, TN-GA fine particulate matter (PM 2.5 ) nonattainment area (hereafter referred to as the "Chattanooga TN-GA Area" or "Area") to attainment for the 1997 Annual PM 2.5 national ambient air quality standards (NAAQS) and to approve a state implementation plan (SIP) revision containing a maintenance plan for the Georgia portion of the Chattanooga TN-GA Area. The Georgia portion of the Chattanooga TN-GA Area is comprised of two counties: Catoosa and Walker Counties in Georgia. The Environmental Protection Agency (EPA) is proposing to approve the redesignation request and the related SIP revision, including GA EPD's plan for maintaining attainment of the PM 2.5 standard, for the Georgia portion of the Chattanooga TN-GA Area. EPA is also proposing to approve into the Georgia SIP the motor vehicle emission budgets (MVEBs) for nitrogen oxides (NO X ) and PM 2.5 for the year 2025 for the Georgia portion of the Chattanooga TN-GA Area. On April 23, 2013, Alabama submitted a request to redesi