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ra.- <br /> r <br /> Ot = <br /> SIERRA <br /> The site%vas oper'llud as;t saddle shop by Gibraller until its sale to Hilltop developers in <br /> LS181, It is unknown htrx long the tine ww, opvraled as a s:uldle shop and/or if it was rose.d for <br /> 4r <br /> (Jtlsrr hstsint•sscs prier:+) its list,as a ,ads3lc• shop, <br /> " <br /> There are currently five untoergrolind fuel stOranc L,anks at the site. The sVct of the tanks. <br /> tYpe and product type are shown helm+•. <br /> lw Tank size [Qallonsj Tarllc 1\•11 Product Tvpr' <br /> a 10.000 5lt•el Diesel <br /> 10.000 titer] Supreme Unleaded <br /> Q 10.000 Steel Regtdar Unleaded <br /> 10.000 steel Regular Unleaded <br /> 10.000 steel Regular Gcaded <br /> No tank test results were available for htclusinn in this report. <br /> In June of 1990. the tanks'venting;system was upgraded and.while the tank excavation <br /> was open,soil samples were.collected front approximal ely five feet below the ground surface. The <br /> samples were submitted to Manby Analytieid i rb in Houston, Texas for analysis. Trace <br /> concentrations [maximum of 0.025 parts per million (ppm)( or total BTEX compounds were <br /> detected in the soil samples. <br /> 1.3 Area Land Use Survey <br /> c An area land use survey was completed is part of this investigation(Figure 2,Appendix <br /> A). The area hand use survzy consisted ora reconnaissance of the neighboring propert::s and <br /> businesses within a two bin-k radius of the site and a review of the Fuel Leaks List at the Regional <br /> haler Quality Control Hoard-Central Valley Region in Sacramento.Califonaa. None of the sites <br /> located near the Chevron site are listed on the Fuel leaks Gist. <br /> Three B's Truck Plaza. located at 14749 Thornton Road. has four 12.000-gallon <br /> underground fuel tanks. On April 5. 1987,three of the four tanks were tested tight by Precision <br /> Page 3 <br />