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S <br /> boring. No evidence of petroleum hydrocarbon contamination was noted in any of the other soil <br /> samples or in the auger cuttings. <br /> Soil boring B3 was located within a few feet of the first locomotive fueling track, in a slight <br /> depression between the first locomotive fueling track and the location of the former UST pit. <br /> r <br /> This boring reported encountered water at a'depth of less than 2 feet bgs that had a substantial <br /> petroleum hydrocarbon sheen observed on the water. Drilling operations were suspended <br /> because of concern:that a subsurface water line had been breached. Personnel from ST&E <br /> inspected the location and informed Upgradient that surface water collects in this depression. <br /> Upgradient directed V&W to move 10 feet to the west of soil boring B3 and drill a.new boring <br /> (B4). After B4 was drilled, a water sample was collected from B3, although most of the water <br /> had drained from the borehole while B4 was being drilled. <br /> i <br /> i <br /> The soil samples were analyzed for Total Petroleum Hydrocarbons as diesel, benzene,toluene. <br /> ethylbenzene, and xylene (BTEX), and MTBE by USEPA Test Methods 8015M and 8020. <br /> I <br /> Analytical laboratory results are presented in Appendix 6. The results are summarized in Table <br /> 2 and depicted on Figure 6. <br /> Upgradient suggested the field observations made during drilling(i.e.hydrocarbons present only <br /> at 15 and 20 feet bgs in soil boring B1) were valid when compared with analytical laboratory <br /> results. No MTBE was reportedly detected in either of these samples. Diesel-range h <br /> hydrocarbons were detected in the water grab sample from soil boring B3 at a concentration of <br /> a <br /> 1700 p./L,-The source of this diesel fuel was reported by Upgradient to most likely have <br /> originated from surface railroad operations conducted along the roadbed. i <br /> Env ironmentahSTETARSCRO 9102008.wpd 8 <br />