DNREC – Division of Water, Surface Water Discharges Section
The Department of Natural Resources and Environmental Control, Division of Water, hereby gives notice of the following proposal regarding National Pollutant Discharge Elimination System (NPDES) permits:
Indian River Power LLC has filed a timely and sufficient application for reissuance of its NPDES Permit No. DE0050580 (State Number WPCC 3013D/76) to discharge cooling tower blowdown, screen backwash, industrial wastewater treatment effluent, strainer backwash, and storm water to Island Creek, a tributary to Indian River, and Indian River Bay from its facilities located at 29416 Power Plant Road in Dagsboro, Sussex County, Delaware. The Indian River Generating Station (IRGS) is a coal fired steam electric generating plant. The IRGS began commercial operation in November 1957 and at its peak had four generating units with a combined generating capacity of approximately 771 Megawatts. The older generating units (Units 1, 2, and 3) which employed once through cooling systems were shut down just prior to or during the term of the current permit. Unit 4 is the only steam electric generating unit in operation at the IRGS. Unit 4 utilizes mechanical draft closed cycle cooling (a “closed-cycle recirculating system” per USEPA’s 316(b) regulation) for all of its cooling needs. The permittee has identified 11 discharge points at the facility in the permit application. Outfall 027 consists of Unit #4 Cooling Tower Blowdown. Outfall 029 consists of Unit #4 Screen Backwash. Outfall 030 consists of Industrial Wastewater Treatment Effluent. Outfalls 031, 032, 033, 034, 035, 037, 042, and 045 consist of storm water only. All but one of the outfalls discharge directly or via the Discharge Canal and/or Island Creek to the Indian River. The one exception is Outfall 030 which discharges to the Cooling Tower Basin where it is recycled for use in the Unit 4 cooling tower.
Based on a preliminary staff review and application of lawful standards and regulations, the Department proposes to re-issue this permit, subject to certain effluent limitations and conditions. The proposed determinations are tentative. Persons wishing to comment upon or object to the proposed determinations are invited to submit same in writing to the Surface Water Discharges Section of the Division of Water, at the address listed below, no later than 30 days from this notice. All comments received prior to said date will be considered in the formulation of final determinations regarding this application.
A public hearing on the above will NOT be held unless the Secretary of DNREC receives a request by 4:30 pm September 25, 2018, or if the Secretary determines that a public hearing is in the public interest. A request for a hearing shall be in writing and shall state the nature of the issues to be raised at the hearing. It must also show familiarity with the proposal and a reasoned statement of the permit's probable impact.
The applications, fact sheets, and permits are available for inspection or copies may be obtained by contacting:
Division of Water
Surface Water Discharges Section
89 Kings Highway
Dover, Delaware 19901