Case Study #13 – Menlo Park, CA (Chlorinated Project) Scope of Work CalClean was contracted to install and operate a High Vacuum Soil Vapor Extraction (HVSVE) for a confidential client located in Menlo Park, CA. The subject site was developed as an active dry cleaner facility and subsurface soil were found to contain elevated concentrations of tetrachloroethene (PCE), a common dry cleaning agent. A soil gas sample collected from 5 feet below grade contained PCE at a concentration of 2,900 ug/l and significantly exceeded the California Human Health Screening Level (CHHSL) of 0.6 ug/l for commercial property. Soil remediation using HVSVE was completed in 2013 to reduce concentrations of PCE in the shallow soils to levels acceptable for closure by the Department of Toxic Sub

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