Cleaning Up: Lower Duwamish work forges ahead

By Seth Preston, Communications Manager, Toxics Cleanup Program Combined efforts to clean up the Lower Duwamish Waterway in south Seattle took a major step forward this week.Work is under way on cleaning up the site known as Slip 4, one of the major pollution “hot spots” in the Lower Duwamish, which is a federal Superfund site.“The cleanup of Slip 4, about three miles upstream from Harbor Island,