Case Study #3 – Orange, CA Scope of Work CalClean was contracted to conduct HVDPE events for a confidential client located within the Santa Ana Regional Water Quality Board. The subject site exhibited elevated concentrations of petroleum hydrocarbons in the soil and groundwater beneath the site. The Orange County Health Care Agency approved mobile HVDPE to clean up the site to closure. Mobile HVDPE was performed for a total of 44-days to clean up the groundwater, cap fringe and saturated zones. A trailer-mounted HVDPE system (7.5 hp LRP) was used continuously over a one year period to clean-up the vadose zone. Finally, a truck mounted system (25 hp LRP) was used intermittently over a three week period to polish off the remaining hydrocarbons at the site. Lithology Near surfa

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