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im <br /> v x - <br /> western sidewall. The proximity of the market/cafe to the tank pit <br /> made overexcavation along the eastern sidewall infeasible. Since <br /> verification soil sample 114000 south" contained no detectable <br /> hydrocarbons, additional soil was not renoved from this area. The <br /> vertical extent of contamination in the vicinity to tahe depth errn <br /> end of TP-2 was assessed by excavating oil <br /> approximately 30 feet. After excavating to the aforementioned <br /> FID measurements indicated that elevated levels <br /> the <br /> of <br /> soils. <br /> depth, face <br /> -• resent the subsurface <br /> hydrocarbons were still p- SJCLIID inspector) AAA ceased soil <br /> advise of Mr. Harlin Knoll ( ested that verification <br /> .. overexcavation activities. Mr. Knoll u <br /> sosamples be collected and analyzedfrom the eastern sidewall <br /> further remedial work, <br /> and southern floor of the excavation. <br /> if warranted, would be based on the analytical results of these <br /> samples. <br /> 3.1.1 Verification Soil sampling <br /> Excavation floor verification lo�aaplro i.mat 1ys-1 and e30tand 26 feet,sidewall <br /> sample VS-2 were taken at depthspp <br /> respectively. <br /> Each soil sample was collected from the tank pit by removing <br /> native material with a backhoe bucket and collecting the sample in I <br /> a brass tube liner. The brass tube <br /> ends wer end-caps uandlsealed toy covered thet <br /> a teflon liner, capped with p pI <br /> i <br /> brass tubes with duct tape. The tubes were labeled as California <br /> an iced-cooler for transport to sparger Technology accompanied by <br /> p <br /> Department of Health Services certified laboratory) , <br /> a ao x C f)r TPE°s protocol i <br /> 4 <br /> chain-of-custody documentation (sae Append <br /> S <br /> relative to sample handling procedures) . <br /> 3.1.2 Chemical Analytical Results <br /> Veri 'ication soil sicplead by tnd VS-2 were e <br /> DHS Method, EPAaMethod 8020,lyzed for F <br /> heEPA <br /> BTEX, EDB, and organ <br /> Method 8010, and the DHS Method, respectively. <br /> The results of the so ?. chemical analyses are presented in Appendix <br /> ss <br /> A and summarized inorTable <br /> 2. t na yz sT f ve at con entrationsof10 <br /> and VS-2 detected ci <br /> r <br /> 5 <br />