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Woonsocket Project Highlights

Contaminant: cVOC (Chlorinated Volatile Organic Compound)
Location: Woonsocket Middle School, Woonsocket, Rhode Island
Industry: Municipal development
Problem Situation: PCE (tetrachloroethylene) contamination
BioStryke™ Solution: BioStryke™ ERDENHANCED™
Results: 50% reduction in cVOC concentrations
Ultimate Results: Project continues

In-Situ Enhanced Reductive Dechlorination

Consultant of record , was selected through a quality-based competitive process by Gilbane Building Company for environmental engineering services at the proposed Woonsocket Middle School Site. Project goals included the 50% reduction of chlorinated volatile organic compound (cVOC) concentrations in the groundwater using BioStryke™ ERDENHANCED™ , an in-situ amendment developed by Plant Products Co. Ltd. of Brampton, Ontario; BioStryke™
ERDENHANCED™  is designed to passive-aggressively destroy phreatic zone cVOC contamination by biostimulating existing anaerobic conditions. The proposed middle school site is owned by the City of Woonsocket, Rhode Island.
GZA designed an injection approach for amendment deployment; applying for/receiving a permit with the Rhode Island Department of Environmental Management’s (RIDEM) Underground Injection Control Program, to proceed. Tetrachloroethene (PCE) is the primary cVOC identified in the soil and groundwater. The target sand and gravel aquifer occupies a volume of 4,500,000 cubic feet square feet of the injection area. Specifically, amendment deployment included the injection of BioStryke™ ERDENHANCED™ as slurry, to stimulate the development of anaerobic conditions favorable to cVOC enhanced reductive dechlorination (ERD). BioStryke™ ERDENHANCED™ includes a food-grade dye to serve as a visual tracer for rapidly evaluating area of influence in the field.

Based on preliminary performance monitoring results, one year post the solitary injection of ERD Enhanced, project goals were met and groundwater geochemical conditions continue to support the reductive dechlorination process.