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i <br /> EXCAVATION. OF HYDROCARBON INIPACTED SOIL <br /> Country Mart <br /> 34243 South Chrisman Rold <br /> Tracy, California <br /> I <br /> February 1995 <br /> 1.0 INTRODUCTION <br /> I <br /> In accordance with a request from Mr. Pushpinder Singh, p operty owner, Geological Audit <br /> Services, Inc. (GeoAudit) has prepared this report of excavation procedures performed at <br /> 34243 South Chrisman Road in Tracy, California (the site). Approximately 75 cubic yards <br /> of soil were excavated from the area of the former underground storage tanks (USTs) and <br /> piping. The location of the site is illustrated in Figure 1. A� plan of the site is illustrated in <br /> Figure 2. y <br /> i <br /> 2.0 BACKGROUND � <br /> 2.1 Site Location <br /> i <br /> The site is located in a flat rural/agricultural area south of Tracy, California. The site is <br /> located one-quarter mile northeast of the intersection of Stilate Hiolmay 132 and Interstate <br /> 580 (Figure 1). The California Aqueduct is located appro!pimately one-quarter mile north <br /> of the site. The site is occupied by a single building and ope�lrates as a mini-mart/truck stop. <br /> 2.2 UST Removal <br /> It is our understanding that three underground storage tan <br /> l�1 (USTs), dispenser islands and <br /> associated piping were removed from the site in January 1995. .After removal procedures, <br /> soil samples were collected from beneath each UST. Samples collected from beneath the <br /> northern-most tank indicated the presence of petroleui'i hydrocarbon impacted soil. <br /> Excavated soil was stockpiled adjacent to the excavation. <br /> Soil samples were also collected from beneath the-dispenser islands and piping. Two soil <br /> samples indicated that hydrocarbon impacted soil is present near the northern dispenser <br /> islands. Analytical results of soil samples from the UST removal are included in Table 1. <br /> 2.3 Groundwater Depth and Gradient <br /> According to information obtained from Mr. Singh, ground\Iater depth in the vicinity of the <br /> site is reported to be in excess of 120 feet. The San Joaquin County Flood Control and <br /> c <br /> G"Iogiol Audn Snrvincs.1— <br /> SC-95-01-IM UNMY <br /> —SG95-01-107602COUNIRY APART/uc <br /> it <br /> it <br /> I <br /> I, <br />