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TABLE 4 <br /> Historical SoH Analytical Data <br /> ARC® Service Station No, 2130 <br /> 7906 North Ei Dorado Street, Stockton, CA <br /> Sample Sampled Total GRO DRO B T E X MTBE TBA DIPS ETBE TAME Ethanol 1 ,2-DCA EDB Lead <br /> Sample Name Depth Solids <br /> (feet) Date N (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) <br /> VW-8 B-13) 56.5 08/18/92 520 = 1 .30 23 14 69 <br /> VW-9 (8-14) 31 .5 08/18/92 <1 .0 <0.005 <0.005 <0.005 <0.005 <br /> 41 .5 08/18/92 2.6 0.21 0.54 0.056 0.45 - - - - - <br /> VW-10 (6-15) 31 .5 08/19/92 - 1 - 0.015 0.037 0.016 <0.005 - - - - - - <br /> 41 .5 08/19/92 - 22.0 - 1 .7 3.9 0.56 3.0 - - - - - - <br /> 56.5 08/19/92 24 0.34 0.83 0.30 1 .5 <br /> VW-11 (B-28) 08/11/95 Not sampled due to proximity of other wells <br />-I VW-12 B-29) 08/11 /95 Not sampled due to proximity of other wells <br /> )arge Wells (AS) <br /> e �-1 (B-17) 46.5 08/21/92 4.8 0.03 0.06 0.039 0.26 <br /> 615 08121/92 73 11 17 018 099 - - - - <br /> AS-2 (B-26) 21 08/09/95 - <1 .0 - <0.005 0.019 <0.005 0.011 <br /> 51 06/09/95 <1 .0 <0.005 0.0059 <D.005 0.014 <br /> AS-3 (B-27) 36 08/10/95 - 7,700 - 6.1 460 170 910 - - - - <br /> 56.5 08/10/95 920 8.4 51 18 92 ' <br /> Notes <br /> GRO = Gasoline range organics <br /> DRO = Diesel range organics <br /> B = Benzene <br /> T = Toluene <br /> E = Ethylbenzene <br /> = Xylenes <br /> UTBE = Methyl tertiary butyl ether <br /> TBA = Tert-butyl alcohol <br /> DI PE = Di-isopropyl ether <br /> ETBE = Ethyl tert-butyl ether <br /> TAME = Terl-amyl methyl ether <br /> i ,2-DCA = 1 ,2 Dichloroethane <br /> EDB = 1 ,2-Dlbromoethane <br /> - = Not analyzed <br /> mg/l:g = milligrams per kilogram <br /> ` - Hydrocarbon In requested fuel range, but doesn't resemble requested fuel <br /> - All samples analyzed after hold time expired <br /> 9130 Historical Soil Table.xls Page 3 of 3 Stari <br />