U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

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Shore, J. | Institute of Environmental Sciences Webinar, 12 August 2019.

An active industrial site polluted with high concentrations of DNAPL, TCA, and TCE in groundwater in Scotland was being addressed using a dual-phase vapor extraction (DPVE) system that was unsuccessful in meeting the remediation goal of a 75% reduction in chlorinated solvent mass. A supplementary membrane interface probe investigation discovered contamination deeper than the maximum treatment depth of the DPVE system (> 6 m). An alternative combined remediation method using biostimulation and bioaugmentation treatment was designed using direct push co-injection at 3-9 m across a 1,200m2 area of a high volume, micellar electron donor and a microbial consortium specifically designed to degrade both chlorinated ethenes and ethanes. See a 41:25 min recording of the presentation at https://www.youtube.com/watch?v=tynp91373OQ.

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