The Town of Clayton is constructing the new Sam’s Branch Water Reclamation Facility (SBWRF) on the banks of the Neuse River. Upon completion, the Town’s existing Little Creek Wastewater Treatment Plant (LCWWTP) will be decommissioned. A new regional pump station located at the site will convey the current WWTP flow to the new SBWRF.
WithersRavenel provided engineering design, project management, permitting, and construction phase services for the new Little Creek Regional Pump Station, force main, and gravity sewer to transfer wastewater to the new WRF. The Little Creek Regional Pump Station design is phased to match the future build-out capacity of the Town sewer flow south of US 70 in similar phases as planned for the new WRF.
The design includes three duty pumps and one standby pump. In the first phase, two 200 HP pumps and two 100 HP pumps were installed. With 200 HP pumps running, the resulting initial phase design point will be 6,300 GPM at 146 FT TDH. The 100 HP pumps running together have the same capacity as one full-size pump and will meet anticipated low-flow conditions in the initial years of the pump station operation.
Prior to reaching build-out design conditions estimated in Phase II, the 100 HP pumps will be replaced with 200 HP pumps to increase flow to 8,000 GPM. The pump station structure was constructed above both 100-year and 500-year base flood elevations for reliability and to meet funding agency requirements. A headworks with a single mechanical 12.5 MGD bar screen and manual bypass screen will proceed to the pump station wet well to remove debris prior to the pumps. Dual standby dri-prime diesel-fueled pumps provide backup pumping capability during power outages. The pump station discharges through approximately 5,100 LF of 24-inch force main and approximately 11,000 LF of 24, 30, 36, 42, and 48-inch gravity sewer.
Following the decommissioning of the existing LCWRF, the existing LCWRF gravity effluent outfall will also be converted to a gravity sewer outfall since it parallels the new gravity sewer outfall installed in this project. Valved interconnections were installed to facilitate this conversion at such time to accommodate the additional build-out flows of Phase II and additional Industrial Park sewer from the Town’s concurrent ECIA Pump Station, Force Main and Gravity Sewer project.
The $18 million portion of the overall project is funded by SRF loans and ARPA earmark money. WithersRavenel helped the Town apply for some of the funding for the more than $200 million overall project. We are also providing grant/loan administration services.
