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- W1966487925 abstract "The U.S. Department of Energy Hanford Site, formerly used for nuclear weapons production, encompasses 1500 square kilometers in southeast Washington State along the Columbia River. A principle threat to the river are the groundwater plumes of hexavalent chromium (Cr(VI)), which affect approximately 9.8 square kilometers, and 4.1 kilometers of shoreline. Cleanup goals are to stop Cr(VI) from entering the river by the end of 2012 and remediate the groundwater plumes to the drinking water standards by the end of 2020. Five groundwater pump-and-treat systems are currently in operation for the remediation of Cr(VI). Since the 1990s, over 13.6 billion L of groundwater have been treated; over 1,435 kg of Cr(VI) have been removed. This paper describes the unique aspects of the site, its environmental setting, hydrogeology, groundwater-river interface, riverine hydraulic effects, remediation activities completed to date, a summary of the current and proposed pump-and-treat operations, the in situ redox manipulation barrier, and the effectiveness of passive barriers, resins, and treatability testing results of calcium polysulfide, biostimulation, and electrocoagulation, currently under evaluation." @default.
- W1966487925 created "2016-06-24" @default.
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- W1966487925 date "2011-01-01" @default.
- W1966487925 modified "2023-09-27" @default.
- W1966487925 title "Groundwater Remediation of Hexavalent Chromium Along the Columbia River at the Hanford Site in Washington State, USA" @default.
- W1966487925 doi "https://doi.org/10.1115/icem2011-59030" @default.
- W1966487925 hasPublicationYear "2011" @default.
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