Groundwater Remediation at Low Flow/Low Permeability Sites using HRC

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Courtesy of REGENESIS

Rocky Flats Environmental Technology Site (RFETS) is located near Golden, Colorado. A groundwater plume of tetrachlorethene (PCE) and other volatile organic compounds (VOCs) developed at the PU&D Yard site as a result of prior spills at this location. A treatability study evaluated the effectiveness of the Hydrogen Release Compound (HRC®) in low-flow groundwater regimes. HRC is a proprietary, polylactate ester that slowly releases lactic acid which is a hydrogen source for microbial dechlorination. In February 2001, eight hundred pounds of HRC was poured
into 16 material insertion points (MIPs). Two monitoring wells were also installed, one in the source area and one ten feet downgradient. Preliminary results indicate that HRC is effectively remediating this plume.

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