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TABLE 1 <br /> Historical Soil Analytical Data <br /> Former ARCO Service Station No.443 <br /> 2478 East Oak Street Stockton,California <br /> ampe <br /> Depth Date GRO Benzene Toluene E[hylbenzene Xylenes MTBE DIPE <br /> Sample Name (feet) Sampled (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) ETBE TAME TBA 1,2-DCA EDB Leatl <br /> Sample Depth Date (rlglkg) Benzene Toluene Elhylbenzene Xylenes MTBE DIPE ET I TAME TBA 1,2-DCA EDB Lead <br /> Name (feet) Sampled (mg/kg) (mg/kg) (mg/kg) (mg/kg) (ng/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) <br /> Shell Soil Boring(SB) <br /> SB2610.5 11/.3/2005 41.0 '0.0050 '0.0050 '0.0050 '0.0050 <0.OD50 '0.0010 '0.0050 '0.0050 '0010 '00050 '0.0050 NA <br /> 20.5 11(42005 18,000 '5 0 36 200 1,900 <5.0 470 .5.0 '5.0 Q5 '5.0 45.0 NA <br /> 30.5 11WOD5 62 X050 0.91 0.92 4.4 '0.50 '0.50 -0.50 -0.50 42.5 -0.50 '0.50 NA <br /> 40.5 11/320D5 19,000 11 1,100 460 2,200 00 Q1 <10 410 c52 470 410 NA <br /> 50.5 11(3/20(15 3,500 2.9 120 69 320 42.5 c5.0 <2.5 42.5 <13 <2.5 <2.5 NA <br /> 60.5 11/412005 5,200 30 220 99 470 <2.5 X5.0 <2.5 Q.5 <13 <2.5 Q.5 NA • <br /> 70.5 11/3/2005 1,600 5.7 53 26 130 '0.50 41.0 '0.50 <0.50 -2.5 <0.50 <0.50 NA <br /> SB-27 10.5 11/42005 41.0 <0.0050 <0.0050 '0.0050 0.0097 <0.0050 <0.010 .0.0050 .0.01350 <0.010 <0.0050 <0.0050 NA <br /> 20.5 11142005 41.0 '0.0050 '0.0050 '0.0050 <br /> <ODD50 '0.0050 -0.010 '0.0050 '0.0050 '0.010 '0.0050 '0.0050 NA <br /> 30.5 11/42005 <1.0 <0.0050 '0.0050 '0.0050 <0.0050 '0.0050 '0.010 <0.0050 '0.0050 40.010 40.0050 40.0050 NA <br /> 40.5 11/42005 41.0 <0.0050 -0.0050 '0.0050 <0.0050 '0.0050 <0.010 '0.0050 <D0050 (0.010 <0.OD50 <0.0D50 NA <br /> 50.5 11/42005 41.0 '0.0050 <00D50 40.0050 0.0052 '0.0050 '0.010 <0.0050 '0.0050 <0.010 <0.0050 40.0050 NA <br /> 60.5 11/412005 47.0 '0.0050 '0.0050 -0.0050 '0.0050 <O.OD50 '0.010 <0.0050 <0.0050 40.010 <0.0050 <0.0050 NA <br /> 70.5 11/42005 410 <0.0050 '0.0050 'O.0050 '0.0050 '0.0050 <0.010 '0.0050 <O.0050 <0.010 '0.0050 <00050 NA <br /> Monitoring Wells(MW) <br /> MW-186-65 6 6272007 <0.10 '0.0050 '0.0050 <0D050 '0.0050 <0.0050 <0.0050 <0D050 <0.0050 <0.020 <0.0050 NA 11 <br /> MWAS-21'-21.5' 21 6272007 6,800 45.0 40 190 1,200 42.5 42.5 <2.5 <2.5 <500 <2.5 NA 25 <br /> MWASAV 41.5' 41 6272007 3,600 1.5 190 W 200 <D50 <0.50 '0.50 '0.50 '100 <0.50 NA 12 <br /> MW-1S61'61.6 61 6272007 11,000 47 660 290 1.500 Q.5 Q.5 <2.5 42.5 <500 42.5 NA 7.8 <br /> MWAS-66'-66.5' 65 626/1007 3,899 7 64 30 140 <0.50 <0.50 W.50 '0.50 <99 W.50 NA 12 <br /> Explanation <br /> GRO=Gasoline range organics <br /> DRO=Diesel range organics • <br /> MTBE=Methyl tertiary butyl ether <br /> DIPE=Di-isopropyl ether <br /> ETRE=Ethyl tert-butyl ether <br /> TAME=Ten-amyl methyl ether <br /> TBA=Tert-butyl alcohol <br /> 1,2-DCA =1,2 Dichlorcethane <br /> EDB=1,2-Dibiomcelhane <br /> NA=Not analyzed <br /> mg/kg=milligrams per kilogram <br /> 443 Arco Historical soil.xls Pog0 1 Of 1 Stantec <br />