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x - <br /> 3 <br /> Chevron/Alrport <br /> February 1991 <br /> Table 1. Underground Storage Tank History <br /> Product Constructlan <br /> Period Tank She <br /> (in gallons) Stored <br /> 530 unknown <br /> waste oll <br /> gasoline unknown <br /> 4,000 unknown <br /> 8 D00 gasoline <br /> gasoline unknown <br /> 1964=47 7.500 gasoline unknown <br /> 5,000 gasoline unknown <br /> 5,000 gasoline unknown <br /> 550 <br /> rcg: Versar, Inc.(Sacramento)May 16, 1989 <br /> In 1989,Versar performed an environmental assessment for this site and reported the results of <br /> soil samples collected from three soil borings drilled to a depth or of 25 feet See a-petroleum Of <br /> of <br /> Me boil, Of tha 3 soil samples collected and analyzed,only one contained <br /> hydrocarbons(TPH)-as-gasoline at concentrations above the Method Detection these <br /> This gni glee <br /> 13I 20.contained 0,35 per;per million(ppm) 1p�p-as gasoline. As a result o! <br /> ma�it06M well(MW-1 in Figure 2)wt%s installed on the site. <br /> ed by Groundwater Technology for Chevron In July 1990. Subsequently, <br /> A work plan was prepared <br /> stiea'yV C.1ie+rron to assess <br /> the current state <br /> Groundvmw Technology was redof the groundwater <br /> b9neath thisyite. This assessment included malting an historical survey of land use near this site and <br /> f ° wells on the site Perimeter. This report documents these <br /> the installation <br /> three groundwater-monitoring <br /> activities. <br /> SITE SETTlNO <br /> 1 ' <br /> The former Chevron Service Station No.9-6075 is located on the southwest comer of the <br /> : Way and Tenth Street,to Stockton,CalifomIa. The land surrounding the site has <br /> Intersection of Airport y <br /> developed with commercial building:;and residences. StnacwrQs moss the street to the } <br /> been entirely ure 3.Site Vicinity I <br /> have been derrailshed(See Fig <br /> north,and also adjacent to the site 0551 the south. not <br /> Map) this report oWains <br /> i Filstoricai Vk;lnity Land-Use and Environmental Survey Sectio <br /> • <br /> additional InforMatkyn on the surrounding property t rrrrrr���, <br /> •°` iL_i GROUNDwATER <br /> TECHNOIDGY.INC. <br /> = I <br />