Workers use water to control dust as an excavating machine lifts soil into a dump truck. When hauled away for disposal, the soil will be covered.
On leaving the work area, the truck receives a spray cleaning to prevent the trackout of dust or mud onto neighborhood streets.
Read details here.
Cleanup ProjectsThe excavation is one of several projects that follows a lengthy investigation aimed primarily at PCBs (polychlorinated bihenyls) found in storm drains that empty into Slip 4, a Duwamish Waterway inlet near Seattle’s Georgetown neighborhood. The U.S. Environmental Protection Agency (EPA) will oversee a cleanup of contaminated sediment on the bottom of Slip 4 this fall.
The projects have begun to reduce the concentrations of PCBs found in the storm drains that serve a 137-acre area that drains to Slip 4. Cleanup work in the North Boeing Field/Georgetown Steam Plant area will help reduce potential re-contamination of the inlet.
For more informationAbout Slip 4, the North Boeing Field/Georgetown Steam Plant area and the overall Lower Duwamish Waterway cleanup:
- Georgetown Steam Plant/North Boeing Field interim cleanup action overview (Ecology)
- Fact Sheet on Georgetown Steam Plant/North Boeing Field interim cleanup action (pdf, Ecology)
- Slip 4 drainage area source control (Ecology)
- Planned Slip 4 cleanup (EPA)
- Overall Lower Duwamish cleanup (Ecology)