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Chevron U SA <br /> Page 18 <br /> During Dames & Moore's October 19, 1990 site visit, California Petroleum Inc <br /> was moisture conditioning and placing compacted fill in the excavation Twining <br /> Laboratories had been contacted to perform density tests on the compacted fill Their <br /> first testing sequence occurred on October 19, 1990. On October 19, 1990, the third <br /> monitoring well (MW-2) was uncovered and staked to prevent possible damage The <br /> sampling of the last lift of aerated soil along the northern side also occurred on <br /> this date. the sampling location is shown on Plate 13 and the analytical test results <br /> are summarized on Table XI <br /> TABLE X1 <br /> Concentrations of Petroleum Constituents in Soil <br /> (Concentrations measured in parts per million) <br /> Date Collected: <br /> October 19, 1990 <br /> sample <br /> I.D. Benzene Toluene Ethbnz. Xylenes T.P.H. <br /> 1 ABC <0. 005 <0. 005 <0. 005 <0. 015 <10 <br /> Minimum <br /> Detection Limit 0. 005 0. 005 0. 005 0. 015 10 <br /> Leaend• <br /> < - Less than T.P.H. - Total Petroleum Hydrocarbons <br /> Ethbnz - Ethylbenzene n/d - Non-detected <br /> 15000-250-044 <br /> DAMES & MOOAE <br />