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Table 5 <br /> Historical Soil Analytical Data Compared to San Francisco Bay Regional Water Quality Control Board Environmental Screening Levels <br /> ARCO Service Staton 2130 <br /> 7906 North EI Dorado Street <br /> Stockton, California <br /> Sample TPH as TPH as <br /> Sample Depth Date Gasoline Diesel Benzene Toluene Ethylbenzene Xylenes MtBE Lead <br /> Name (feet) Sampled (mglkg) (mg/kg) (mg/kg) (mg/kg ) (mg/kg) (mg/kg) (mg/kg) (mg/kg) <br /> MW-13" 20.0 7/6/06 <0.20 1 .6" <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 NA <br /> 35.0 7/6106 <0.20 <1 .0` <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 NA <br /> 50.0 7/6/06 <0.20 1 .1 • <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 NA <br /> Remediation Wells <br /> VW-1 (B-3) 26 December-01 <1 .0 NA <0.005 <0.006 <0.005 <0.005 NA NA <br /> 31 December-01 3,000 NA 1 .4 37 22 130 NA NA <br /> 61 December-01 10 NA 0.6 0.65 0.064 0.40 NA <5.0 <br /> VW-2 (B-4) 31 December-01 <1 .0 NA <0.005 <0.005 <0.005 <0.005 NA NA <br /> 41 December-01 7.4 NA 0.33 0.54 0.061 0.45 NA NA <br /> 61 December-01 28 NA 2.6 2.6 0.056 1 .4 NA <5.0 <br /> VW-3 (B-5) 26 December-01 <1 .0 NA <0.005 <0.005 <0.005 <0.005 NA NA <br /> 31 December-01 4.6 NA 0.035 0.042 0.02 0.15 NA NA <br /> 51 December-01 58 NA 0.11 0.52 0.28 1 .7 NA <5.0 <br /> 61 December-01 140 NA 0.39 0.97 0.58 3.4 NA NA <br /> VW-4 (B-7) 31 December-01 1 .7 NA <0.005 0.015 0.010 0.070 NA NA <br /> 56 December-01 530 NA 0.52 4.6 3.1 17 NA <5.0 <br /> 61 December-01 14 NA 1 .0 1 .3 0.12 0.64 NA NA <br /> VW-5 (B-10) 21 .5 August-92 <1 .0 NA <0.005 <0.005 <0.005 <0.005 NA NA <br /> 41 .5 August-92 1 .2 NA 0.19 0.25 0.018 0.12 NA NA <br /> 51 .5 August-92 <1 .0 NA 0.03 0.032 <0.005 0.013 NA NA <br /> VW-6 (B-11 ) 21 .5 August-92 <1 .0 NA 0.0074 <0.005 0.0079 0.037 NA NAI, <br /> 36.5 August-92 <1 .0 NA 0.021 <0.005 <0.005 <0.005 NA NA <br /> 46.5 August-92 130 NA 0.23 1 .3 1 .5 9.4 NA NA <br /> VW-7 (B-12) 31 .5 August-92 <1 .0 NA <0.005 <0.005 <0.005 <0.005 NA NA <br /> 46.5 August-92 <1 .0 NA 0.032 <0.005 0.0071 0.055 NA NA <br /> 61 .5 August-92 <1 .0 NA 0.10 0.13 0.017 0.12 NA NA <br /> VW-8 (6-13) 31 .5 August-92 <1 .0 NA 0.0055 <0.005 <0.005 <0.005 NA NA <br /> 41 .5 August-92 3.3 NA 0.36 0.29 0.13 0.72 NA NA <br /> 56.5 August-92 520 NA 1 .30 23 14 69 NA NA <br /> 2130 Arco Historical soil-ESL comparison Page 3 of 4 SECOR <br />