Hidden Lake Pump Station replacement and sewer improvement
Completed – Spring 2009
What King County built
- New underground storage pipe
- A 500,000-gallon underground storage pipe that temporarily stores wastewater during large storms
- Underground odor and flow control structures
- About 1,000 ft of sewer pipe replaced in the streets around the park
- Additional capacity added to the city’s stormwater detention pond
- Boeing Creek Trunk Sewer replacement
- Replaced about 1,200 ft of Ronald Wastewater District sewer pipe
- Replaced about 12,000 ft of county sewer pipe
- Replaced about 6,500 ft of water mains for Seattle Public Utilities
- Repaved streets and widened asphalt shoulder in some areas
- Pump station replacement
- A new Hidden Lake Pump Station, with pumping capacity of 6.8 mgd
- A cost-effective design that helps the building blend in with the neighborhood
- In winter 2008, landscaping with mostly native plants completed
Project schedule
- Construction began: summer 2006
- Construction complete:
- Underground storage tank in Boeing Creek Park – Fall 2007
- Boeing Creek Trunk – Summer 2008
- Hidden Lake Pump Station – Spring 2009