Case Study #1 – Santa Ana, CA Scope of Work CalClean was contracted to conduct a 24-hour high vacuum dual phase extraction pilot test for a confidential client located within the Regional Water Quality Control Board – Santa Ana Region. The subject site exhibited elevated concentrations of petroleum hydrocarbons in the soil and groundwater beneath the site, including contamination from oxygenated gasoline additives; Methyl-tert-butyl ether (MtBE) and tert-amyl methyl ether (TAME). Lithology The Site is underlain by alluvial materials consisting of inter-bedded layers of poorly graded fine to medium grained sand, sandy silt, silt, and clay to the total depth explored of 25 feet. Perched groundwater is present at a depth of approximately 7 feet below grade. Results The results o

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