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Pat Leary 6 August 1991 <br /> RWQCB Page 3 <br /> 5. Treatment <br /> The treatment system is described in detail in the attached <br /> technical report. <br /> Type: Groundwater and soil remediation using <br /> airstrippers, activated carbon polish of the airstripper <br /> effluent, and treatment of all soil vapor and airstripper <br /> vapor effluent using a catalytic oxidizer. <br /> Capacity: Groundwater treatment of 20 gpm/28, 800 gpd <br /> (maximum) , with no expected discharge peaks. <br /> Method of disposal: Approximately 15 gpm into the <br /> injection wells and the remainder of the effluent into <br /> the storm sewer. <br /> 6. Water Supply <br /> The source of the water will be groundwater from the impacted <br /> aquifer. Groundwater will be extracted from wells RW1, RW2, <br /> RW3 , RW4 , and V1. An analysis of the groundwater chemistry <br /> was performed in May, 1991. Parameters analyzed were Total <br /> Petroleum Hydrocarbons as gasoline, BTEX, Total Petroleum <br /> Hydrocarbon as diesel, Major Anions, Priority Pollutant <br /> Metals, Organic Lead and General Minerals. The results <br /> obtained from the analysis is provided in the attached <br /> technical report. <br /> 7 . Flood Protection <br /> The site is at present an unimproved vacant lot, located at <br /> the corner of Pershing Avenue and Rosemarie Lane in Stockton, <br /> California. The site is in a residential/commercial area and <br /> is not believed to be in a flood zone. General drainage is <br /> provided in the street for rain runoff. <br /> 8 . Contacts <br /> Consultant EA Engineering, Science and Technology <br /> 41 Lafayette Circle <br /> Lafayette, California 94549 <br /> (415) 283-7077 <br /> Project Manager: Doug Oram, Ph.D <br />