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F, <br /> a"w Chevron U.S.A. <br /> Page 7 <br /> TAB-TX I-A <br /> Concentrations of Petroleum Constituents in Soil, <br /> f�A (Concentrations measured in parts per million) <br /> f , <br /> sample <br /> Benzene Toluene Ethbnz. Zylenes T.P.H. <br /> D11-9-N.Wall n/d <0.010 n/d <0.010 n/d* <br /> DI1-21-N.W.Bot, n/d <0.010 n/d n/d n/d* <br /> Iy DI1-15-N.W.Wall n/d <0.010 n/d <0.010 n/d* <br /> D11-10-S.W,Wall n/d n/d n/d <0.010 n/d* <br /> �wb DI1-15-S.W.Wall n/d <0.010 n/d <0.010 n/d* <br /> DI1-21-S.C.Bot. n/d n/d n/d <0.010 n/d* <br /> DI1-21-E.Wall n/d <0.010 n/d n/d n/d* <br /> Le—pend_ <br /> Ethbnz. - Ethylbenzene <br /> T.P.H. - Total Petroleum Hydrocarbons <br /> f.. :., n/d Non--detected <br /> * -- Total Petroleum Hydrocarbons as gasoline & diesel <br /> DI Dispenser IslAnd <br /> :a s - South, N - No rth,_ E - East, W -- West, C - Center <br /> Bot - Bottom of Excavation. <br /> .. Wall - Excavation Sidewall <br /> < - Less than <br /> Certified analytical reports for.DI-1 are included in <br /> Appendix A of this report. The reports include analytical <br /> - methods as well as the method detection limit for each <br /> analysis. Excavation DI-1 was backfilled using 3/8-inch pea- <br /> gravel. <br /> 1600.0-250-044 <br /> Corrected <br /> Dv.th-z \1,oiz <br />