PROJECT CASE STUDY PROJECT CASE STUDY www.cetco.com Gas vapor mitigation system utilizing EVOH technology as solution to TCE contamination. Prior land use was for “El Centro Motors”, an automobile dealership and service facility. There was some contamination in the soil & groundwater due to underground storage tanks (USTs). Images left to right: Installation of the VI-20™ geomembrane with EVOH technology over the low-profile G EOVEnt ™ gas venti

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