Kingston Fossil Plant-Peninsula Site: Hydrogeologic Evaluation of Coal-Combustion Byproduct Disposal Facility

摘要

Construction of a new of Class II coal-combustion byproduct (CCB) disposal facility proposed at the Kingston Fossil Plant (KIF) may occur in two separate phases. Both phases would involve disposal of gypsum derived from flue-gas desulfurization (FGD). Phase 1 would be constructed pending successfully marketing of the FGD derived gypsum. The foot print of Phase 1 includes an area of approximated 25 acres. If efforts to market the gypsum are unsuccessful, the dispoal facility will be expanded literally under Phase 2. Phase 2 includes additional area adjacent to the site and encompasses apporximately 80 acres (total for both Phase 1 and 2). If approved, approximately 1 million cubic yards (CY) of gypsum is tentatively scheduled to be deposited in Phast 1 between 2009 and 2029. If the facility is expanded to include Phase 2, approximately 8 Million CY of gypsum would be deposited in the facility between 2009 and 2029. Estimates of FGD wastes for disposal are approximate, and depend on the sulfur content of coal utilized by the plant, as well as TVA's ability to successfull market the FGD derived gypsum for the other uses. Current design plans for the disposal facility include a low-permeability liner and under-drain system. Hydrogeologic evaluations of the proposed facility were performed to examine its suitability relative to the approriate standard of Tennessee Deparment of Environment and Conservation (TDEC) Rule 1220-1-7. Evaluations addressed effects of proposed dispoal facilities on local groundwater and surface water resources.