Snohomish County – Estuary Restoration Pump Station
Romtec Utilities designed, supplied, and manufactured a powerful stormwater pump station with an integrated control building. The pump station was installed as part of a large estuary restoration project and is used to prevent inland flooding. The system uses two Ebara 20 hp pumps with a third Ebara 5 hp pump as a “jockey” to meet the high and variable flow demands of the application. Large flows of stormwater are collected inside a 15’ deep precast concrete wet well with a 10’ interior diameter. Real-time water levels in the well are measured through a pressure transducer. Romtec Utilities also supplied a control building for this project. Electrical controls for the pump station are housed inside this building and are integrated into the design to meet the accessibility and operation requirements necessary. An emergency generator is also inside the control building and sits on an isolated concrete slab to accommodate vibrations from operation.
What Romtec Utilities Provided
- Pump Station Design & Engineering
- Package Pump Station Supplier
- Package Pump Station Manufacturer
- Package Pump Station Specification Writer
- On-Site Construction Adviser
- On-Site Start-Up Management
- Pump Station Site Plan Layout Designer
Why They Chose Romtec Utilities
Romtec Utilities was contacted to design a stormwater pump station that was capable of pumping thousands of gallons of water per minute and a control building indoor electrical housing. This pumping system is part of a larger estuary restoration project at Smith Island being completed by Snohomish County to restore a transitional habitat for the endangered chinook salmon. Romtec Utilities worked with Otak Engineering to complete a design for this application, and when the project went out to bid, we were specified as the provider of the pumping system. The control building that Romtec Utilities provided was designed with all of the pump station control systems integrated. Once the design was finalized the pump station was ready to be launched into production. Scarsella Bros, Inc. was the contractor on this project and performed the installation of the package pump station with a Romtec Utilities installation advisor present. Once completed, the ownership of the stormwater pump station and control building were transferred to Snohomish County. This estuary restoration project alone recovered around 378 acres of tidelands to the area and will be a significant benefit to local salmon populations.