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HORIZON ENVIRONMENTAL INC. <br /> Specialists in Site Assessment Remedial Testing,Design and Operation <br /> REPORT <br /> SUBSURFACE INVESTIGATION <br /> at <br /> Former Beacon Station No 494 <br /> 2185 East Fremont Street <br /> Stockton, Cahforma <br /> For Ultramar Inc <br /> INTRODUCTION <br /> ,J At the request of Ultramar Inc (Ultramar), Horizon Environmental Inc (Horizon) conducted <br /> a subsurface investigation at Former Beacon Station No 494 located at 2185 East Fremont <br /> Street in Stockton, California (Figure 1) This subsurface investigation included the drilling <br /> and sampling of four soil borings (CB-1 through CB-4) and the installation of one vapor <br /> extraction well (CB-2) in one of the borings Boring CB-1 was drilled at an angle of 18° <br /> from vertical toward the south, underneath the former pump island area at the site The <br /> purpose of this investigation was to evaluate for the presence of and further delineate <br /> gasoline hydrocarbons in soil, and to assess if the soil vapor extraction system has removed <br /> the gasoline hydrocarbons from the soil beneath the site The work was performed as <br /> outlined in a Work Plan date February 13, 1995 prepared by Action, Mickelson, and van <br /> Dam, Inc (AMV) <br /> 5011 Golden Foothill Parkway,Suite 7 - EI Dorado Hills,CA 95762 - (916)939-2170 - FAX (916)939-2172 <br /> P 0 Box 5283 - Bakersfield CA 93388 - (805)589-8389 - FAX (805)589-1456 <br />