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— x _ <br /> Eli <br /> 6. <br /> Chevron U.S.A. <br /> Page 9 <br /> TABLE I-B <br /> a4 Concentrations of petroleum Constituents in Soil <br /> (Concentrations measured in parts per million) <br /> -a Sample <br /> I ' I•b. Benzene Toluene Ethbnz. Xylenes T.P.H. <br /> D12-28-N.C.Bot. n/d <0.010 n/d <0.010 n/d* <br /> D12--15-N.Wall ;i/d <0.010 n/d <0.010 n/d* <br /> D12-19-S.W.Wall n/d n/d n/d n/d n/d* <br /> ! nd= <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, North, E - East, w - West, C - Center <br /> Bot - Bottom of Excavation <br /> Wall - Excavation Sidewall <br /> < -- Less than <br /> The excavation was deepened and broadened (to the east -. <br /> towards Di-3) on January 29 and 30, 1990. On January 30, <br /> 1990, two samples were obtained from the limits of excavation <br /> on the north side of DT-3. On Wednesday, January 31, 1990 <br /> excavation operations were temporarily ceased. Field <br /> screening indicated that the area to the east of D1-3 had <br /> petroleum present. Pour additional samples were obtained <br /> from the limits of excavation. The results of analyses on <br /> samples obtained on ,7anuary 30 and 31, 1990 are presented in <br /> _ Table T-C. Photo 3 presents the final excavation. <br /> -M 16000-250-044 <br /> Corrected <br /> '. ;•_ .. is ,. , <br />