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STATUS UPDATE ON WATER BOARD'S PERCHLORATE INVESTIGATION AND CLEANUP PROJECT AND THE STATUS OF CITY OF BARSTOW'S NITRATE GROUNDWATER CONTAMINATION
California Regional Water Quality Control Board, Lahontan Region, 37 pp, 2018

In late 2010, perchlorate groundwater pollution was detected in a water supply well for the City of Barstow and Marine Corps Logistics Base Nebo. The perchlorate issue arose from illegal disposal of excess perchlorate salts by a defunct pyrotechnical company. Water Board staff recently obtained a $2.67 million grant to address cleanup at the perchlorate source area. The Water Board proposes to construct a pilot-scale soil flushing unit and up to three groundwater extraction wells in a system to capture, treat, and apply treated water to the perchlorate source area and flush perchlorate to groundwater for subsequent capture. Once the pilot-scale treatability study is complete, the Water Board will seek additional funding from the State Water Board for a long-term cleanup project to address the perchlorate source area as well as perchlorate groundwater pollution downgradient of its present location. The perchlorate plume (~2 miles long by 1000 ft wide) is adjacent to and likely commingled with a nitrate plume (~1.75 miles long by 2000 ft wide). To address nitrate and perchlorate in groundwater, the City of Barstow and its contractor applied for and received a $1.7 million dollar grant from the California Energy Commission to install a biofiltration system for contaminant removal. https://www.waterboards.ca.gov/lahontan/board_info/agenda/2018/jan/item_6_barstow.pdf



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