Case Study #11 – Blythe Commingled Plume #3, CA Scope of Work CalClean was contracted to conduct HVDPE events for the City of Blythe at Commingled Plume #3 located within the Regional Water Quality Control Board – Colorado River Basin Region, CA (RWQCB). The subject site consists of three former gasoline service station sites located across from one another at a prominent intersection. The plume area contained elevated concentrations of petroleum hydrocarbons in the soil and groundwater. The RWQCB approved mobile HVDPE to clean up the sites to closure. HVDPE was performed for a total of 196-days to clean up the groundwater, cap fringe and saturated zones. A truck mounted system (25 hp LRP) was used intermittently over a two year period to remove free product and to reduce th

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