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Mwl <br /> �. 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 /> F detectable hydrocarbons. Four 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-D <br /> T Concentrations of Petroleum Constituents in Soil <br /> (Concentrations measured in parts per million) <br /> i.., sample <br /> Z.D. Benzene Toluene Ethbnz. Xylenes T.P.}i. <br /> i = b13-3-16-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 /> D13-3-16-S.E.wall n/d n/d n/d n/d n/d <br /> D13-3-18-Bot. n/d n/d n/d n/d n/d <br /> F <br /> Legend. <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 /> Wall - Excavation Sidewall <br /> < -- Less than <br /> 160oo-250-044 <br /> Corrected <br />