On October 14, the Port of Seattle Commission authorized a public solicitation for a firm to lead the remedial design of the East Waterway, the final and most complex phase of the Harbor Island Superfund Site cleanup. This step follows recent agreements with the EPA, King County, and the City of Seattle, and reflects a unified commitment to translating the EPA’s Record of Decision into an actionable plan. The East Waterway cleanup will address sediments contaminated with PCBs, arsenic, mercury, and other toxins, protecting human health, marine life, and culturally significant habitats for local Tribes. The EPA will continue to oversee the process to ensure compliance with environmental and public health standards. This milestone advances a decades-long, collaborative effort to restore the Duwamish River and support a resilient, healthy working waterfront for future generations.