Approval and Promulgation of Implementation Plans; Mississippi: New Source Review-Prevention of Significance Deterioration

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Mississippi State Implementation Plan (SIP) submitted by the State of Mississippi, through the Mississippi Department of Environmental Quality (MDEQ), on February 10, 2012. The SIP revision modifies Mississippi's New Source Review (NSR) Prevention of Significant Deterioration (PSD) program to incorporate by reference (IBR) certain Federal PSD regulations. The revision also removes certain language from the SIP that is no longer relevant. EPA is approving Mississippi's February 10, 2012, revision to Mississippi's SIP because the Agency has determined that the changes are consistent with the Clean Air Act (CAA or Act) and EPA's PSD permitting regulations.