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Mulch Biowall and Surface Amendment Pilot Test, Site B301, Offutt AFB, Nebraska
GSI ENVIRONMENTAL INC HOUSTON TX
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This document describes the results of a field test, which assessed the applicability and feasibility of promoting the in-situ bioremedition of chlorinated solvent compounds PCE, TCE, etc. by using a mulch biowall and surface amendment near Building 301 B301, Offutt Air Force Base, Nebraska. The biowall was installed in the vicinity of MW-9 where the water table is high i.e., 6 ft bgs and was filled with mulch produced at the Base. The conceptual model for this technology is that the native organic matter fermented, producing hydrogen to stimulate reductive dechlorination. Similarly, a natural organic matter amendment was applied to the ground above the plume in the vicinity of MW-9. This treatment method relies on infiltration to transport soluble organic matter into the subsurface, where the organic matter can then ferment, producing hydrogen to stimulate reductive dechlorination.
APPROVED FOR PUBLIC RELEASE