Sanitary Landfill NPL Site Industry: Manufacturing Location: Pacific Northwest ENTACT was engaged to perform remediation services at a former sanitary landfill Superfund site. The work area is approximately 2 acres in size and requires the removal of an existing 30,000 cubic yard Resource Conservation and Recovery Act (RCRA) cap and approximately 35,000 buried drums that …
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Fly Ash Impoundment Closure and Dam Modification Industry: Utilities Location: Midwest For this 300-acre wet fly ash impoundment closure, ENTACT conducted a multiyear phased approach with a crew of more than 70 people. Closure construction started with the draining of surface water via pumping or by digging temporary drainage channels in the deposited ash to …
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Wet Ash Impoundment Closure Industry: Utilities Location: Midwest For this 140-acre wet fly ash impoundment closure, ENTACT conducted a phased dewatering approach, planning water flow, drainage and regrading of the exposed fly ash according to site elevation. The challenging regrading process set an elevation that would ultimately direct the subgrade for the construction of a …
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