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BlaeS Environmental Management Inc U Haul#709 50 <br /> 002-70950-03 Groundwater Momtorzng Repoit <br /> 1/25/02 <br /> 2 0 SITE BACKGROUND <br /> 2 1 SITE DESCRIPTION <br /> Amerco/U-Haul owns and occupies the property and currently uses the site as a U-Haul vehicle and <br /> equipment rental and repair shop Two single-story buildings occupy the site The buildings include a <br /> former service station building and a garage, which was added to the original building The original <br /> building consists of an office/retail area and two garage bays on the south The add-on structure consists of <br /> two garage bays A separate storage container is located on the south side of the building Site features are <br /> shown on Figure 2 <br /> The site was formerly used as a gasoline storage and retail facility According to a 1994 SOPA <br /> Environmental Technology, Inc (SOTA) work plan, the site was used as a gasoline retail facility from <br /> approximately 1950 until 1976 In 1976, the site was listed in the Polk directory as "Stockton Moving <br /> Center" From 1976 until 1990, the site was apparently used as a moving equipment rental facility Since <br /> 1990,U-Haul has used the site in its current capacity <br /> 2 2 DETECTION OF HYDROCARBON RELEASE <br /> According to a 1990 ETS Environmental & Assoc (ETS) report, four underground storage tanks (USTs) <br /> and associated fuel dispensers were removed from the site in 1990 The four USTs were one 10,000-gallon, <br /> one 8,000-gallon, and one 6,000-gallon capacity tanks that contained unleaded and gasoline fuel, and one <br /> 250-gallon capacity waste-oil tank The tanks were orientated approximately east-west and located in the <br /> area labeled "Former UST Location" (Figure 2) Upon removal, the tanks were not replaced According to <br /> ETS, analytical results of soil samples collected from beneath the former USTs and associated product lines <br /> indicated detectable concentrations of petroleum hydrocarbons in soil Based on results of soil samples <br /> collected during removal of the USTs, the hydrocarbon release areas were concluded to be (1) the UST <br /> area and (2) the product piping areas (Figure 2) <br /> 23 WELLS Al THE SITE <br /> Due to requests made by the SJC, Blaes Environmental conducted additional site characterization <br /> activities in January 2000 Additional site characterization activities included, in part, the installation of <br /> 3 <br />