DNAPL in Clay Formation


Courtesy of Regenesis


At a manufacturing site located in Cookeville, TN, on and offsite soil (tight clays) and groundwater contaminated with chlorinated solvents, were discovered as the result of a Phase I and a Phase II investigation. The client entered the State of Tennessee Voluntary Clean-up Oversight and Assistance Program (VCOAP), which resulted in an informal focused feasibility study to select a remedial alternative. Technologies reviewed included recirculating wells, barrier walls, chemical oxidation, and enhanced bioremediation. The formal recommendation was presented in the Remedial
Action/Remedial Design Work Plan (RD/RA). The consultant, Harding ESE, selected an enhanced bioremediation using Hydrogen Released Compound (HRC® developed by Regenesis) as the technology of choice to remediate an
area of excessive chlorinated solvent-contaminated groundwater. HRC® was chosen as it offered an effective remediation technology with the added, costeffective benefits of no interruption to facility operations, no lengthy operations and maintenance, and no construction of unsightly/ obtrusive remedial systems.

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