100HX Groundwater Treatment Facility
DOE contractor CH2M HILL Plateau Remediation began operating the 100-HX “Pump-and-Treat” facility at the end of September. A near-replica of the 100-DX Pump-and-Treat plant that went online at year’s end 2010, 100-HX will treat groundwater drawn from 31 extraction wells. After the water is treated to drinking water quality, it will be returned into the ground through 15 injection wells. The process not only cleans up contaminated groundwater, the injected water forms a barrier that prevents contaminated groundwater from reaching the Columbia River.

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