Case Study #17 – Santa Clarita, CA (Chlorinated Project) Scope of Work CalClean was contracted to install and operate a High Vacuum Dual Phase Extraction (HVDPE) for a confidential client located in Santa Clarita, CA. The subject site was developed as an active dry cleaner facility and subsurface soil were found to contain elevated concentrations of tetrachloroethylene (PCE), a common dry cleaning agent. A soil gas sample collected from 5 and 10 feet below grade contained PCE at a concentration of 43,100 µg/L and significantly exceeded the California Human Health Screening Level (CHHSL) of 0.6 µg/L for commercial property. The highest PCE groundwater concentrations were around 21,000 ug/L. Soil and groundwater remediation using HVDPE was completed from 2012 to 2013 to reduce co

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