EPA is taking direct final action to convert a conditional approval of provisions in the Florida State Implementation Plan (SIP) to a full approval under the federal Clean Air Act (CAA or Act). On June 17, 2009, the State of Florida, through the Florida Department of Environmental Protection (FDEP), submitted a SIP revision in response to the conditional approval of its New Source Review (NSR) permitting program. The revision includes changes to certain parts of the Prevention of Significant Deterioration (PSD) construction permit program in Florida, including the definition of "new emissions unit," "regulated air pollutant" and "significant emissions rate" as well as recordkeeping requirements. In addition, Florida provided a clarification that the significant emissions rate for mercury in the Florida regulations is intended to apply as a state-only provision. EPA has determined that this revision addresses the conditions identified in the conditional approval, and is therefore approvable. This action is being taken pursuant to section 110 of the CAA.