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Geochemical and Microbiological Processes that Affect Migration and Natural Attenuation of Chlorinated Solvents in Fractured-Sedimentary Rock — Naval Air Warfare Center (NAWC) Research Site, West Trenton, NJ
Project scientist Dan Goode and others presented research results on fine-scale delineation of contaminants by rock-core sampling at the 49th Annual Meeting of the Northeastern Section, Geological Society of America on March 23, 2014, in Lancaster, Pennsylvania. This research included investigations conducted as part of a 5-year bioaugmentation remediation experiment.
In 1993, the U.S. Geological Survey (USGS) began studies of contamination in fractured-sedimentary bedrock in cooperation with the U.S. Navy at the former Naval Air Warfare Center (NAWC), West Trenton, N.J.
In 2001, the USGS Toxic Substances Hydrology Program initiated research at the NAWC to complement and expand the research being conducted on groundwater flow and contaminant transport in fractured bedrock at its Mirror Lake, New Hampshire Research Site. The NAWC site was chosen because the general hydrogeologic framework was well defined and the site contained extensive contamination over a range of geochemical conditions. Site groundwater contains volatile organic compounds (VOC's) that include trichloroethene (TCE), cis-1,2-dichloroethene, and vinyl chloride.
The research will provide understanding of the physical, chemical, and microbial processes that affect the transport and fate of chlorinated solvents in fractured-sedimentary-rock aquifers, including the role of dense non-aqueous phase liquids (DNAPL) as a long-term source. The research also will develop methods for cost-effective subsurface characterization.
Research at the site is a multidisciplinary, collaborative effort that presently involves scientists from the USGS, U.S. Navy, and several academic and private research institutions.