CH2M Hill Removes 680 Pounds of Contaminated Groundwater From Ha - NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |

CH2M Hill Removes 680 Pounds of Contaminated Groundwater From Hanford Site

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A contractor for Hanford has removed 680 pounds of contamination from Hanford groundwater. A contractor for Hanford has removed 680 pounds of contamination from Hanford groundwater.
HANFORD, WA. - A contractor for Hanford has removed 680 pounds of contamination from Hanford groundwater.

Between October 2013 and the end of July 2014, CH2M Hill Plateau Remediation Company exceeded the annual goal for removing hexavalent chromium from groundwater near the Columbia River at the site.

“Our contractor removed more chromium than forecasted this year by pulling more groundwater from the areas of highest contamination,” said DOE Richland's Soil and Groundwater Division Director Briant Charboneau. “Having extraction wells in the right place and adding new treatment systems over the past few years has been critical to our success in removing contamination from groundwater and protecting the Columbia River.”

The chromium contamination resulted from intentional and unintentional releases of chemicals from the site's plutonium production reactors into the soil along the river. Much of that soil has been removed, and CH2M HILL is operating treatment facilities along the river to address the remaining chromium contamination in groundwater.

“Through our workers' efforts to maintain safe and optimum operations of our treatment technologies, we have been able to surpass DOE's groundwater cleanup goals again this year, and that progress is visible,” said Mark Cherry, CH2M HILL acting vice president of the Soil and Groundwater Remediation Project.

CH2M Hill operates five groundwater treatment systems supported by a network of approximately 150 wells to remove the chromium contamination. Contaminated water is then extracted through the wells and transferred to facilities for treatment. The treated water is then injected back into the aquifer to help drive the contaminated groundwater toward the extraction wells.

As cleanup moves forward, CH2M Hill monitors the wells and installs new wells as necessary to follow the areas of the contamination as they shrink.

Hanford contractors have removed nearly three tons of chromium from groundwater since treatment operations in the mid-1990s.
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