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MEMO <br /> R PORT <br /> { SUBSURFACE INVESTIGATXON <br /> i CHEVRON SERVICE STATION UMBER 6465 <br /> 5600 VORTH PHRSHIRG AVENUE <br /> STOCKTON, CALIFORNIA <br /> INTRODUCTION <br /> This report presents the results of Groundwater Technology, <br /> Inc., 's hydrogeoloic investigation at the Chevron service station <br /> 1 located at 5608 North Pershing Avenue and Robinhood Drive, <br /> Stockton, California (See Figure 1, Site Location Map). The <br /> assessment was performed in accordance with a work request dated <br /> September 15, 1586 from Mark Nelson, of Chevron USA„ In brief, <br /> the investigation included the drilling of borings, installation <br /> 1 or monitoring wells, obtaining soil and water samples, laboratory <br /> y-- <br /> analysis and preparation of a summary report. <br /> HACEGROUND <br /> The site is located in San Joaquin County, within a predomi- <br /> nantly commercial district of Northern Stockton at approximately <br /> 20 feet above sea level. The site improvements include three <br /> underground fuel storage tanks, and two pump islands which <br /> [ dispense unleaded, regular and super unleaded gasoline (See <br /> Figure 2). Maintenance at the site detected a corrosion related <br /> line leak near the outer pump island as noted on the site plan. <br /> The product line has been replaced. In response to requirements <br /> outlined in an August 21, 1986 correspondence from the San <br /> Joaquin Local Health District to Chevron USA, a plan for identi- <br /> fying the extent of impact was initiated and performed by <br /> Groundwater Technology. There are no other existing gasoline <br /> stations within a 1/2 mile radius of the site. <br /> } <br /> i <br /> i <br /> r <br />