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rs <br /> Chevron U.S.A. <br /> Page 10 <br /> TABLE I-C <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 /> p13-29-N.C.Bot n/d n/d n/d n/d n/d* <br /> P13-13-N.E.Wall n/d n/d n/d 0.1 8** <br /> DI3-17• �.Wall 0.58 10 4.6 23 490** <br /> D12/3-_7-N.W.Bot n/d n/d n/d n/d n/d* <br /> D13-30-N.W.Bot n/d n/d n/d n/d n/d* <br /> D13-27-A.W.Igall n/d n/d n/d n/d n/d* <br /> DI3-25-N.E.Wall n/d n/d n/d n/d n/d* <br /> Legend. <br /> Ethbnz. - Ethylbenzene <br /> T.P.H. - Total Petroleum Hydrocarbons <br /> n/d - Non-detected <br /> i - Total Petroleum Hydrocarbons as gasoline & diesel <br /> Total Petroleum Hydrocarbons as gasoline <br /> (Total Petroleum Hydrocarbons as diesel n/d) <br /> r.. DI - Dispenser Island <br /> 4 8 - South, H - North, E - East, W - West, C - Center <br /> Bot - Bottom of Excavation <br /> Wall - Excavation Sidewall <br /> ice+ <br /> < - Less than <br /> The locations of all samples presented in Tables I-B and <br /> I-C are presented on Plate 4. Certified Analytical Reports <br /> are included in Appendix A. <br /> Excavation activities were temporarily ceased on January <br /> 31, 1990. On February 19, 1990 activity at the site was <br /> resumed. "Clean" soils stockpiled during the initial <br /> excavation were-placed-as-backfill-in-the-bottom-o£-the-pit--- --- <br /> . see Section 5.2) Excavation of soil on the south east side <br /> of MW-2 (DI-3) commenced on Februax~I 22, 1990 (Plate 5) . <br /> 16000-250--044 <br /> Corrected <br /> Dvm s lon;tF. <br /> -;r <br />