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West Point Treatment Plant restoration update for Wednesday, March 1, 2017


Fully staffed crews continue working to restore complete wastewater treatment capacity at King County’s West Point Treatment Plant.


Restoration work continues at the West Point Treatment Plant, where employees and contractors have been working 24 hours a day since a Feb. 9 equipment failure reduced wastewater treatment capabilities at the plant.

Progress report for March 1:
There are approximately 60 workers at the treatment plant today, March 1, including 50 people who are dedicated to ongoing restoration work.

Worker safety is the top priority, and crews follow rigorous safety protocols that King County has put in place to ensure safety for employees, contractors and inspectors. Work is being done carefully and methodically.

• Workers have removed about 80 percent of all the various motors that might have been damaged as a result of the equipment failure and subsequent flooding in the plant, and temporary motor control systems have been installed. Crews are focused on repairing or replacing machinery that is part of the critical path for restoring full wastewater treatment at West Point.

• Instrumentation inspections and repairs continue, as do light fixture replacements. Temporary lighting has been in place throughout the plant to facilitate recovery work.

• Electrical panel replacement work continues, with contractor teams developing design and construction of the replacement panel structure.

• Repairs are also underway to the heating systems for the West Point Treatment Plant’s secondary treatment process, which includes sludge digesters that must be maintained at a certain temperature.

Upcoming weather:
The plant currently has capacity to provide limited wastewater treatment for up to 250 million gallons per day – nearly twice the capacity needed to safely treat all of the stormwater and wastewater the plant receives on an average day in early March.

No emergency bypasses of highly diluted stormwater and wastewater into Puget Sound have occurred since Feb. 16 at the plant, which has a designed wastewater treatment capacity of about 440 million gallons per day.

However, rainfall in Seattle totaling one inch or more over two or three consecutive days could lead to an emergency bypass of highly diluted stormwater and wastewater from the West Point plant.

While rain and snow showers are forecast for near the end of the workweek and again early next week, no additional emergency bypasses of stormwater and wastewater are anticipated in the near term.

Keep up to date:
Stay informed about restoration work at the West Point Treatment plant. Visit the incident response page, and sign up for email updates, and follow on social media:

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