The proposed rule involves amendments to rule Chapter 62-296, F.A.C., to implement the Best Available Retrofit Technology (BART) portion of the U.S. Environmental Protection Agency’s regional haze rules. Pursuant to the federal Clean Air Act, the Department is required to ensure that certain sources of visibility-impairing pollutants in Florida use BART to reduce the impact of their emissions on regional haze. New rule section 62-296.340, F.A.C., is created to set forth procedural requirements by which individual BART determinations will be made.