Discharging the dewaters through the existing treatment basins (bottom ash pond and polishing ponds) and NPDES outfall is consistent with the plant's normal operation. This alternative would use the existing infrastructure at minimal additional cost and will remove the dewaters in the shortest practicable time to comply with the regulatory-driven closure time frames. The antidegradation assessment completed demonstrates that the dewaters can be discharged through the existing ponds and NPDES outfall without exceeding water quality standards. Discharging the dewaters through the existing ponds and NPDES outfall is the preferred alternative and was accepted by the state regulatory agency.
展开▼
