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Once construction of the final protective soil cap is complete and long-term monitoring is underway, the property will be safe for people to visit and play. There are significant benefits expected from this updated cleanup plan. Covering the soil treatment area with a clean soil cap and building a new stormwater drain.Treating at least 267,000 cubic yards of contaminated soil and groundwater by mixing in a cement slurry to permanently immobilize the contamination on site.
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Installing an underground cutoff wall along the south side of the former wood treating area to divert clean groundwater away from contaminated soil and groundwater.“We have improved our cleanup plans in response to public comments, and we look forward to making the property and nearby beaches safe again for the community to use and enjoy.”ĮPA’s May 2019 Record of Decision Amendment and () fact sheet describes the cleanup actions, which include: “Cleaning up historic contamination at the Wyckoff site is critical to protecting people’s health and the health of Puget Sound,” said EPA Region 10 Administrator Chris Hladick. This work will protect the island’s drinking water aquifers and prevent contaminants from reaching Puget Sound. The newly selected cleanup technology will permanently contain and immobilize creosote and other contaminants in soil and groundwater under the former Wyckoff wood treating facility. Environmental Protection Agency has updated and revised cleanup plans for the Wyckoff-Eagle Harbor Superfund Site, on Bainbridge Island, Washington.