The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Florida through the Florida Department of Environmental Protection (FDEP) on March 10, 2015. Florida's March 10, 2015, SIP revision (Progress Report) addresses requirements of the Clean Air Act (CAA or Act) and EPA's rules that require states to submit periodic reports describing progress towards reasonable progress goals (RPGs) established for regional haze and a determination of the adequacy of a state's existing SIP addressing regional haze (regional haze plan). EPA is approving Florida's Progress Report on the basis that it addresses the progress report and adequacy determination requirements for the first implementation period for regional haze.