Multiple Lines of Evidence Show CVOCs Degrading on PlumeStop, Leading Site to NFA Status

This case study reviews one of the original PlumeStop® pilot tests for in situ groundwater treatment of chlorinated volatile organic compounds (CVOCs or chlorinated solvents) at a former dry cleaner location in Marina, California. REGENESIS treated the CVOCs using a novel, sorption-enhanced reductive dechlorination (ERD) approach. This approach consisted of immediate sorption followed by the sequential elimination of chlorine from the CVOC molecules, transforming them into non-toxic end products such as ethene, carbon dioxide, and chloride.

Case study highlights:

• Combined remedy approach proves successful in treating chlorinated solvents at former dry cleaner
• This site provided ideal challenge conditions to demonstrate complete biodegradation using a sorption-ERD approach
• The site was granted NFA status in June 2019 as a result of this pilot study