Current Projects
Lift Station Improvements
A lift station is a pumping facility that moves wastewater from lower elevations to higher elevations. Incorporating lift stations at certain points in a gravity pipeline system is integral to moving sewage to a wastewater treatment plant efficiently and cost-effectively.
Silver Lake currently has has 21 sewer lift stations in our wastewater system, several of which are 20 – 30 years old, and coming to the end of their service life with similar maintenance issues. In response, the District is planning to rehabilitate several of these existing lift stations over the next two to three years, and bring another three new lift stations online soon.
Below is a summary of each lift station project’s scope, cost, and timeline. If you have questions about these or any of our other projects, give us a call at (425) 337-3647.
Thomas Lake Sewer Lift Station Replacement
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Scope – Replace an existing station with three submersible pumps, increased capacity, a new backup generator, and electrical control building. The existing wet well will be converted to overflow storage.
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Total estimated project cost – $2.9 million
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Construction schedule – Work underway, completion in early 2023
Pioneer Trails Lift Station Replacement
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Scope – Replace an existing station with three submersible pumps, increased capacity, a new backup generator, and electrical control building. The existing 35-foot deep wet well will be converted to overflow storage.
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Total estimated project cost – $4.1 million
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Construction schedule – Begin 2023, completion in 2024
Lift Station No. 4 Improvements
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Scope – Replace the original generator for backup power, along with electrical controls and new canopy for weather protection.
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Total estimated project cost – $600,000
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Construction schedule – Spring 2023 pending generator delivery
Lift Station No. 3 Force Main Replacement
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Scope – Replace 3,700 feet of original 10-inch cast iron discharge force main with a new 12-inch pipe, along the 132nd Street SE / 134th Place SE corridor. Work will be done in advance of a Snohomish County paving project in 2024 in order to avoid expensive roadway restoration requirements.
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Total estimated project cost – $2.6 million
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Construction schedule – 2023
Larimer 1 Lift Station Replacement
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Scope – Replace an existing station with submersible pumps, a new backup generator, and electrical control building. The existing wet well will be converted to overflow storage.
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Total estimated project cost – $2.8 million
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Construction schedule – 2024 to 2025
Highlands East Lift Station Rehabilitation
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Scope – Rehabilitate an existing lift station to accommodate increased flow from new upstream developments. Scope is still TBD but may include replacement of motors and pumps, rehabilitating the wet well, new electrical controls, and site improvements.
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Total estimated project cost – $1.5 million
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Construction schedule – 2024 to 2025
