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.

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.

City of Camas Washington

Holt Homes | Camas, WA | 415 GPM - 117' TDH

jweddell300gpm - 500gpm, Municipal Collection, Pacific, Residential Development, Sewer System Expansion, Urban Growth, Wastewater

A large residential development required this package lift station to meet the high sewage flows for over 330 residential lots. Two inlet lines are fitted with deflector panels to reduce the in-well turbidity and protect the duplex submersible solids handling pumps from cascading influent. A below-grade valve vault contains the system valves, access ports, and pressure gauges. A sheltered, outdoor control panel utilizes a pressure transducer and backup conductive probe for liquid level-sensing and is connected to an emergency backup generator.

Grand Ronde Tribal Housing Authority

Confederate Tribes of Grand Ronde|Grand Ronde, OR|400 GPM - 30' TDH

jweddell300gpm - 500gpm, Pacific, Residential Development, Urban Growth, Wastewater

The Confederated Tribes of the Grande Ronde Community purchased this lift station to meet the medium sewage flows of a new housing development. Submersible solids handling pumps in a duplex configuration are protected from influent by two deflector panels on two inlet lines. A below-grade concrete valve vault provides easy access to the system valves, pressure gauges, actuators, and access ports. An outdoor UL listed control panel is protected by a shelter/shade structure. Liquid level-sensing is accomplished with a conductive probe and backup float controls.