Tampa Electric Co. proposes to double its electric generating capacity by constructing a 1,150-MW power station in SW Polk county, Florida. It would consist of two combined cycle generating units,six combustion turbine generating units, and one integrated gasification combined cycle generating unit (IGCC). The IGCC unit would be capable of firing either coal-derived gas (syngas) produced by on-site coal gasification (CG) or low-sulfur fuel oil. The project would include on-site material handling and storage facilities for fuel oil, coal, and byproducts of CG and syngas treatment (slag, sulfuric acid); water supply and wastewater treatment systems; solid waste disposal areas; a cooling reservoir; a substation, and storm water management facilities. Transmission lines and pipeline facilities would also be included. This EIS document assesses the proposed project and alternatives with respect to environmental impacts. Mitigative measures are also evaluated for the preferred alternative.