Informational page on proposed City of Rehoboth Beach's wastewater
projects requiring DNREC permits and Federal Consistency Certification
DNREC conducted a public hearing Nov. 15 in Rehoboth to address all permits and certification required for the City of Rehoboth Beach's proposed wastewater projects, including the ocean outfall, in a concerted and consolidated manner. The public hearing followed an Oct. 19 public workshop held by DNREC aimed at providing the public with a comprehensive understanding of the regulatory actions necessary to construct and operate the proposed ocean outfall, and also to offer the public an opportunity to obtain information, ask questions and offer comments on any or all of these actions. Please see the DNREC City of Rehoboth Beach proposed wastewater project workshop webpage for presentations made at the Oct. 19 workshop. Meanwhile, links below go to a transcript of the Nov. 15 public hearing and two documents of exhibits and comments presented at the hearing:
Ahead of both the workshop and public hearing, DNREC also began soliciting public input Oct. 15 on several applications that the City of Rehoboth Beach has submitted for permits and Coastal Zone Federal Consistency Certification toward the city's construction of an ocean outfall for discharging its treated wastewater. These permits and certification contain requirements governing the construction and operation of the outfall.
Documentation for City of Rehoboth Beach's proposed wastewater projects, including an ocean outfall
The permits and certifications from DNREC (and from responsible divisions and programs within the Department) that are necessary for the City of Rehoboth Beach to construct and operate the ocean outfall include the following:
- NPDES (National Pollution Discharge Elimination System) Permit – DNREC's Division of Water.
The City of Rehoboth Beach has applied for reissuance of its NPDES Permit No. DE0020028 (State Number WPCC 3084E/74) permit to discharge effluent from its Wastewater Treatment Facilities located on Bay Road in Rehoboth Beach, Sussex County, Delaware. The facility is a municipal wastewater treatment plant (WWTP) that receives wastewater from Rehoboth Beach and neighboring areas including North Shores, Henlopen Acres, and the Dewey Beach Sanitary District. This WWTP currently has a single discharge (Outfall 001) to the Rehoboth segment of the Lewes-Rehoboth (L-R) Canal located at Latitude 38°42'36.0"N, Longitude 75°05'34.0"W. Outfall 001 to the L-R Canal is proposed to remain in use for Phase 1 of the permit. Phase 2 of the permit will commence following permitting and construction of the proposed Ocean Outfall (Outfall 002) to the Atlantic Ocean with an anticipated location of Latitude 38° 43.787’ N, Longitude 75° 03.505’ W. Wastewater treatment for Phase 1 is provided by bar screens, a grit collector, emergency off-line diversion tanks, two total barrier oxidation ditches, chemical addition for phosphorus removal, two secondary clarifiers, two microscreens, chlorination and de-chlorination tanks, and post aeration. Wastewater treatment for Phase 2 is provided by bar screens, a grit collector, emergency off-line diversion tanks, two total barrier oxidation ditches, chemical addition for phosphorus removal, two secondary clarifiers, filtration, chlorination and de-chlorination tanks, effluent pumping, and flow metering. Waste sludge is aerobically digested, thickened, and land applied as a liquid or dewatered by a belt press and taken to a sanitary landfill.
Based on a preliminary staff review and application of lawful standards and regulations, the Department proposes to reissue this permit, subject to certain effluent limitations and conditions. The Draft NPDES permit is a tentative decision, which may be revised by the final decision, based on a record developed for the final decision. DNREC contact: Tony Hummel,email: Anthony.Hummel@state.de.us, phone: 302-739-9946
- Coastal Zone Federal Consistency Certification – DNREC's Delaware Coastal Programs.
The Delaware Coastal Programs reviews federal actions, including licenses and permits issued by federal agencies, to determine if the project is consistent with the program’s coastal management policies. The “federal consistency” review of the proposed Rehoboth ocean outfall is prompted by the project requirement for a U.S. Army Corps of Engineers permit. DNREC contact: Trish Arndt; email: Tricia.Arndt@state.de.us; phone: 302-739-9283.
- Subaqueous Lands Act Lease and Water Quality Certification – DNREC's Division of Water
The City of Rehoboth Beach proposes to construct an outfall by installing a 24-inch by 6,000-foot long buried HDPE pipe from within the Deauville Beach parking area near the intersection of Henlopen Ave and Duneway Drive in Rehoboth Beach, eastward into the Atlantic Ocean. The pipe would be installed using a combination of horizontal directional drill and excavate and backfill methods. A 24-inch diameter by 150-foot long diffuser pipe would be attached to the east terminus of the pipe at an approximate water depth of 40 feet. DNREC contact: Jim Chaconas, email: James.Chaconas@state.de.us; phone: 302-739-9943.
- Wastewater Facilities Construction Permit – DNREC's Division of Water.
The City of Rehoboth Beach proposes to construct a 3.5 million gallon per day pump station at the WWTP, an 11,300 linear foot 24-inch force main, and a 6,000 linear foot 24-inch ocean outfall pipe with diffuser. DNREC contact: Greg Pope; email: Greg.Pope@state.de.us, phone: 302-739-9941
- Beach Preservation Coastal Construction Permit – DNREC's Division of Watershed Stewardship.
The City of Rehoboth Beach seeks authority under the Beach Preservation Act to utilize directional drilling for the installation of an ocean outfall pipeline through the area regulated by the Act and utilize public beach within the area regulated by the Beach Preservation Act to assemble that portion of the pipe that will be installed via horizontal directional drilling
DNREC contact: Jennifer Luoma; email: Jennifer.Luoma@state.de.us, phone: 302-739-9921.
All applications and supporting documents for the City of Rehoboth Beach wastewater projects can be found at the links below:
City of Rehoboth Beach Wastewater Project Construction Plans
City of Rehoboth Beach Application to the US Army Corps of Engineers (USACE)
Stormwater Report Required by the DNREC Record of Decision