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�- Chevron U.S.A. <br /> Page 12 <br /> Based on the results of analyses on sample number <br /> D13-15-N.Wall, it was decided that soil east and northeast of <br /> MW-2 should also be removed. Excavation of soil in these <br /> areas commenced on March 19, 1990. Soil was removed until <br /> field screening indicated that remaining soil did not contain <br /> detectable hydrocarbons. Fot:r soil samples were obtained <br /> from the limits of excavation on March 20, 1990. The results <br /> - of analyses on the soil samples are presented in Table II-B. <br /> Sample locations are as presented in Plate 6. <br /> TABLE II-B <br /> Concentrations of Petroleum Constituents in Soil, <br /> (Concentrations measured in parts per million) <br /> sample - <br /> I.D. Benzene Toluene Ethbnz. Xylenes T.P.H. <br /> - <br /> D13-3-16-N.W.Wall n/d n/d n/d n/d n/d <br /> DI3-3-14-N.E.Wall n/d n/d n/d n/d n/d <br /> DI3-3-16-S.E.Wall n/d n/d n/d n/d n/d <br /> 3 <br /> D13-3-18-Bot. n/d n/d n/d n/d n/d <br /> c Legend: <br /> i <br /> Ethbnz. - Ethylbenzene <br /> T.P.H. - Total Petroleum Hydrocarbons <br /> - n/d - Non-detected <br /> * - Total Petroleum Hydrocarbons as gasoline & diesel <br /> DI - Dispenser Island <br /> S - South, N - North, E - East, W - West, C -- Center <br /> Bot - Bottom of Excavation <br /> Tull - Excavation Sidewall <br /> < - Less than <br /> .y: <br /> 16000-250-044 <br /> Corrected <br />