EPA’s cleanup plan will remove 90 percent of Duwamish pollution, at $342 million cost

Published on in Renton Reporter

The U.S. Environmental Protection Agency released Tuesday the final cleanup plan for the Lower Duwamish Waterway Superfund site that will remove 90 percent of the pollution from the major industrial waterway.

The cleanup will cost an estimated $342 million.

The Record of Decision – or “ROD” – is the EPA’s cleanup plan to reduce risks to people’s health and the environment from toxic chemicals in the river.

The cleanup plan will remove 90 percent of pollution in the river with active cleanup of 177 acres by dredging, capping. The remaining low levels of contamination will be addressed by the river’s natural processes bringing in clean sediments to cover the contamination.

The cleanup timeframe is estimated to be 17 years, with seven years of active cleanup and 10 years of natural recovery.

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