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i <br /> Chevron U.S.A. <br /> Page 11 <br /> Eight samples were obtained from the limits of the excavation <br /> on the south and east sides of MW-2 (DI-3) . Again, the <br /> sample locations were specified by Mr. Harlan Knoll of the <br /> San Joaquin County Environmental Health Department. The <br /> results of chemical analyses conducted on the soil samples <br /> obtained on February 23, 1990 are presented in Table II-A <br /> TABLE II-A <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 /> D13-21-W.Wall n/d 0. 04 n/d n/d n/d <br /> D13-25-E.Wall 0.03 0. 05 n/d n/d n/d <br /> D13-14-E.Wall n/d n/d n/d n/d n/d <br /> D13-18-S.Wall n/d 0. 03 n/d n/d n/d <br /> D13-25-N.Wall 0.02 0.05 n/d n/d n/d <br /> DI3-26-Bot n/d n/d n/d n/d 1. 9 <br /> D13-12-S.Wall n/d n/d n/d n/d n/d <br /> DI3-15-N.Wall 2 .4 8 .7 10 49 540 <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 /> 8 - South, N - North, E - East, W - West, C - Center <br /> Bot - Bottom of Excavation <br /> Wall - Excavation Sidewall <br /> < - Less than <br /> 16000--250-044 <br /> Corrected <br /> D-\%a <br />