EPA is taking final action to approve changes to the Florida State Implementation Plan (SIP), submitted by the Florida Department of Environmental Protection (FDEP) to EPA on March 15, 2012. The March 15, 2012, SIP revision modifies Florida's New Source Review (NSR) Prevention of Significant Deterioration (PSD) permitting regulations to adopt, into the Florida SIP, federal NSR PSD requirements for the fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS) as promulgated in EPA's 2008 NSR PM<INF>2.5</INF> Implementation Rule and the 2010 PM<INF>2.5</INF> PSD Increment, Significant Impact Levels (SILs) and Significant Monitoring Concentration (SMC) Rule. EPA is approving portions of Florida's March 15, 2012, SIP revision because they are consistent with the Clean Air Act (CAA or Act) and EPA regulations regarding NSR permitting.