TRS Group, Inc. (TRS) was retained by Secor International, Inc. (SECOR now owned by Stantec Engineering) to perform an Electrical Resistance Heating (ERH) remediation of tetrachloroethene (PCE) DNAPL in soil and groundwater at the former Wright’s Dry Cleaners property in El Centro, CA. The Standard Fixed Price (SFPR) contract required removal of DNAPLs from soil and groundwater within the treatment volume. A total of 261,805 kW-hr was applied to the subsurface during 71 days of operations. Final confirmatory soil sampling indicated the average soil concentrations of PCE were reduced to less than 0.1 milligrams per kilogram (mg/kg) and that the concentration of total chlorinated volatile organic compounds (CVOCs) had been reduced by 99.99%. Additionally, initial groundwater sampling showed that total CVOC concentration in groundwater was reduced by an average of 99.8%.
This study investigates the interaction of persulfate with soil components and chlorinated volatile organic compounds (CVOCs), using thermally activated persulfate oxidation in three soil types: high sand content; high clay content; and paddy field soil. The effect of soil composition on the available oxidant demand and CVOC removal rate was evaluated. Results suggest that the treatment efficiency of CVOCs in soil can be ranked as follows: cis-1,2-dichloroethene > trichloroethylene > 1,2-dichloroethane >...
ABSTRACT
BOS 100 was successfully implemented as part of a combined remedies strategy to treat elevated levels of Trichloroethylene in a shallow fine grained aquifer at a former large industrial facility.
CHALLENGES
A large industrial facility used vapor degreasing in the 1970s and 1980s that resulted in chlorinated volatile organic compound (CVOC) contamination of soil and groundwater. Multiple source areas were discovered and a large plume (greater than 350 feet [ft]) existed onsite. In the primary source...
Project SummaryTRS Group, Inc. (TRS), as a subcontractor to AECOM, completed a Standard Fixed Price Remediation (SFPR) of trichloroethene (TCE) in groundwater in Western Connecticut using Electrical Resistance Heating (ERH). The objective of the ERH project was to achieve the prescribed remediation goal for dissolved TCE in groundwater within the treatment volume. The system incorporated 89 electrodes with co-located vapor recovery (VR) wells to treat a soil volume of approximately 30,900 cubic yards (yd3)....
Project Highlights
ERDENHANCED Remediated >99% cVOC source zone [TCE] 100,000 to < 1 μg/L
ERDENHANCED Realized Complete Biotransformation with no evidence of rebound
ERDENHANCED Provides Multi- Year Sustainability after single deployment event.
ERDENHANCED Minimizes Site, Monitoring, and Overall Remediation Costs, saving Client dollars.
BioStryke Remediation Products, LLC, provide innovative and cost-effective amendment formulations designed to biostimulate treatment zone conditions and enhance...
Project Highlights
ERDENHANCED Pilot Study >62% reduction in PCE molar mass in 9-month period.
ERDENHANCED Proven Cost-Effective Green Biostimulation Strategy
ERDENHANCED Proven Cost-Effective Sustainable Biostimulation Strategy
ERDENHANCED evaluation performed under Ministry of Environment (MOE) approval
ERDENHANCED Pilot Study Demonstrated Contaminant Reductions in 9-months:
>81.5% PCE
>83.5% TCE
>57% cis-DCE
ERDENHANCED Reduces Site Time, Operational Costs
ERDENHANCED Provides...
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Reviews have been disabled for Former dry cleaner source area remediation of PCE in soil and groundwater El Centro, California.
