https://kingcounty.gov/zh-cn/dept/dnrp/about-king-county/about-dnrp/newsroom/2024-news-releases/12-10-lower-duwamish-cleanup
Work has begun to clean up sediment in the upper reach of the Lower Duwamish Waterway Superfund Site, where over a century of urbanization and industrial...
duwamish waterwaysedimentcleanupbeginsupper