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首页> 美国政府科技报告 >Update on the Aquifer/Wetlands Restoration Project at Utica, Nebraska, with Recommendations for Remapping of the Carbon Tetrachloride Contamination in Groundwater
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Update on the Aquifer/Wetlands Restoration Project at Utica, Nebraska, with Recommendations for Remapping of the Carbon Tetrachloride Contamination in Groundwater

机译：内布拉斯加州尤蒂卡的含水层/湿地恢复项目的最新情况，提出重建地下水中四氯化碳污染的建议

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In 1992-1993, Argonne National Laboratory investigated potential carbon tetrachloride contamination that might be linked to the former grain storage facility operated by the Commodity Credit Corporation (CCC) of the U.S. Department of Agriculture (USDA) at Utica, Nebraska. These initial studies identified carbon tetrachloride in a plume of contaminated groundwater, extending approximately 3,500 feet southeastward from the former CCC/USDA facility, within a shallow upper aquifer that had been used previously as a municipal water source by the town. A deeper aquifer used as the current municipal water source was found to be free of carbon tetrachloride contamination. Although the shallow aquifer was no longer being used as a source of drinking water at Utica, additional studies indicated that the carbon tetrachloride could pose an unacceptable health threat to potential future residents who might install private wells along the expected downgradient migration pathway of the plume. On the basis of these findings, corrective action was recommended to decrease the carbon tetrachloride concentrations in the upper aquifer to acceptable levels.

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