Construction will be underway on the Seward Park site between early 2015 and mid 2017. The park remains open, but parking will be affected. View parking map (pdf).
Construction activities at the Seward Park site:
Work inside the storage tank is complete, and operational systems are being tested. Current work outside the tank includes grading, installation of walkways and tennis courts, and landscaping.
This project will reduce the frequency of sewage overflows into Lake Washington to no more than one per year per outfall (on average). SPU plans to complete two new underground storage facilities in North Henderson to store excess combined sewage and stormwater during major rain. The underground storage facilities are in the following locations: