Woods Trailer and RV Park

Woods Trailer & RV Park|Lebanon, OR|72 GPM - 28' TDH

jweddell50gpm - 100gpm, Mixed Use Development, Pacific, Resorts/ Golf Courses, Wastewater

An RV park needed this package lift station to meet the municipal sewage requirements for the residents at the park. Pumping with low flow and low head conditions, the duplex Goulds submersible pumps are sized to efficiently fit the 14’ deep, 4’ diameter wet well. An outdoor UL listed control panel utilizes floats for liquid level-sensing and includes an autodialer for communications and alarm notifications. The complete system was installed at finish grade with traffic rated hatches to provide a low profile for the residential area.

Sammamish Plateau Water

Pacific Properties | Sammamish, WA | 85 GPM - 75' TDH

jweddell50gpm - 100gpm, Meter Vaults, Municipal Collection, Now & Future Expansions, Pacific, Residential Development, Sewer System Expansion, Urban Growth, Wastewater

This medium flow sewage lift station was designed for a new development to meet the Sammamish Plateau Water and Sewer District lift station design standards. These standards specify a PLC controller with touchscreen HMI, SCADA options, a precast concrete valve vault, wet well, meter vault, and duplex submersible pumps. In addition to these design standards, this lift station needed to tie-in to an existing force main owned by the District. Romtec Utilities provided the tie-in force main designs and calculations as well as VFDs (variable frequency drives) to match the changing flow and pressure conditions of the existing force main.

Husky Stadium

University of Washington|Seattle, WA|346 GPM - 40' TDH

jweddell300gpm - 500gpm, Grinder Vault, Municipal Collection, Pacific, Schools, Sewer System Expansion, Slurry/Gritty Water, Valve Vaults, Wastewater, Wastewater Featured

The renovation of the University of Washington’s Husky Stadium required a new lift station to handle medium flows of wastewater. Robust, 10hp Vaughan Chopper pumps were used in a duplex configuration to macerate solids and to pump under unpredictable conditions. The lift station, valve vault, and the access hatches were designed as traffic rated to accommodate loading/unloading next to the main grandstand. The UL listed control panel starts, stops, and alternates each pump cycle at levels measured by Noltaniva float sensors.

Tesoro Oil and Water Separator Pump

Tesoro Corporation|Port Angeles, WA|400 GPM - 30' TDH

jweddell300gpm - 500gpm, Industrial, Industrial Water, Oil & Gas, Oil/Water Separators, Pacific, Stormwater, Stormwater Runoff

A remote Tesoro Corporation industrial site needed this stormwater pump station to handle water discharged from an oil/water separator which processes on-site runoff. Submersible centrifugal pumps were used in a duplex configuration in this shallow wet well. The 7.5 hp Ebara explosion-proof pumps were sized to meet low flow, medium head conditions for stormwater. Check valves and plug valves were integrated into the discharge piping in the well for a simple and cost-effective design. The precast concrete wet well and the access hatch are both pedestrian rated.

City of Camas Washington

The City of Camas | Camas, WA | 126 GPM - 206' TDH

jweddell100gpm - 300gpm, Municipal Collection, Odor Control, Pacific, Residential Development, Sewer System Expansion, Urban Growth, Wastewater

In order to expand the municipal sewer system, this lift station was configured to pump to an existing gravity line flowing to treatment. A 24-foot-deep by 10-foot-diameter wet well collects the sewage flows. The wastewater is pumped at 120 gpm 10,000 lineal feet of 10” force main against 206’ TDH with 23 hp high head submersible solids handling pumps. A sheltered control panel utilizes an intrinsically safe barrier for in-well electrical, such as the pressure transducer and conductive probe for primary and backup level controls.