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a9, <br /> k <br /> IL <br /> exploratory soil boring (B1) near <br /> Grilled 1 vertical exp the vertical extent aE <br /> tank location TP-1 to investigateDrilled 1 angle <br /> vadose zone soil contamination. <br /> ear the southern end of <br /> exploratory soil boring (D2) nvertical and <br /> tank location TP-2 to help define the <br /> soil contamination beneath the <br /> lateral extent of <br /> the market/cafe. <br /> southeastern <br /> canner of <br /> r lit spoon soil samples from each soil boring <br /> sp <br /> Collected and far chemical <br /> • to characterize the subsurface soils <br /> analysis. <br /> Subrizitted selected borehole soil samples .for TPE{C and <br /> BTEX analyzes. <br /> grout to within <br /> sealed each borehole with a neck cement <br /> two feet of ground surface. <br /> soil samples from the stockpiled <br /> Collected verification . <br /> soil for chemical analyses <br /> cmant Report (PSAR) <br /> prepared this Prelim site Asses- <br /> prep performed and analytical results with <br /> • documenting work <br /> conclusions and recornmendzt}-ons. <br /> and borehole soil same <br /> ling in <br /> California Regional Water Quality Colitrol Board <br /> TpE conducted the averexcavatian <br /> i accordance with the „ dated <br /> CRWQCB) "Tri-Regional Board staff Under;round Recommendations <br /> sites,,,preliminary <br /> al <br /> Evaluation and Investigation o <br /> 1990 and Leaning Underground F°.lel Tank Reference Manu <br /> August 10, racedures and protocols employed <br /> 1989. The p + March <br /> (LUFT) , dated October, ation are out <br /> in TPEs <br /> by TpE during the site investigation <br /> 17, 1992 workplan. <br /> Details of the above 'tasks are preser�ted below: <br /> 3.1 Phase II Tank pit overexcavation <br /> the <br /> and 3, 1992 AAA removed contaminated soil Exon was <br /> 2 <br /> Between May Horizontal excavation <br /> southern end of tank excavation TP-2' <br /> ' ended ?aterally to a distance of about 4 feet outward from the <br /> ext <br /> 4 <br />