What to expect at the North Mercer Island Pump Station over the next few months

King County, Washington sent this bulletin at 02/16/2024 03:53 PM PST

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What to expect at the North Mercer Island Pump Station over the next few months 

Improvements to the pump station building

At the end of January, crews began sandblasting the new pump station building. This is a process done to clean off the walls of the pump station in preparation for future upgrades. Sandblasting is expected to continue through the next month.


Starting as early as February 20, crews will be replacing the roof on the pump station building. This work is expected to take about two weeks.


Neighbors near the area may notice more noise during both these activities.

  

Trenching, backfilling, and installing underground utilities

Crews began installing the pump station’s new force main on January 24. This included excavating and then backfilling a trench to connect the new pipe.


Starting as early as February 20, crews will begin working on underground electrical and water utilities and backfilling the utility trenches. Neighbors near the area may notice vibrations over the next few weeks during trenching and backfilling activities.

 

What to expect: 

  • Approved work hours are 7 a.m. to 7 p.m. Monday to Friday and 9 a.m. to 6 p.m. on Saturday. 
  • All work will be performed on the North Mercer Island Pump Station property. 
  • Noise, dust, and vibrations typical of an active construction project. 
    • Increase in noise and vibrations during sandblasting and backfilling activities.
    • The Contractor is required to ensure vibration levels do not exceed allowable limits.
  • Construction schedules can change based on factors such as site conditions, weather, and material availability.