Air Plan Approval; Mississippi: Prevention of Significant Deterioration Updates

The Environmental Protection Agency (EPA) is approving a portion of the State Implementation Plan (SIP) revision submitted by Mississippi, through the Mississippi Department of Environmental Quality (MDEQ), Office of Pollution Control, on June 7, 2016. Specifically, this action approves the portion of the SIP revision making changes to Mississippi's Prevention of Significant Deterioration (PSD) program by modifying the incorporation by reference (IBR) date for the Federal PSD regulations promulgated by EPA. By changing this date, approval of the SIP revision modifies the existing Greenhouse Gas (GHG) PSD permitting program and incorporates PSD provisions related to the 1997, 2006, and 2012 fine particulate matter (PM2.5) and 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS). This action is being taken pursuant to the Clean Air Act (CAA or Act) and its implementing regulations.