North Mercer Way - Soiling Sampling by King County will commence Oct. 27
Over the next six years King County will be upgrading the sewer line between Enatai and the Mercer Island pumping station near the Park and Ride. The initial soil sampling process begins on October 27.
Three of these soil samples will be performed on the I-90 Trail. The trail will remain open, but the trail will be narrowed in places and users will see crews working with a drill rig to take soil samples. Cones and signage will warn trail users of upcoming work activities."