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TABLE 4
<br /> Historical Sod] Analytical Data
<br /> ARCO Service Station No, 2130
<br /> 7906 North El Dorado Street, Stockton, CA
<br /> Sample Sampled Total GRO DRO B T E :: MTBE TBA DIPE ETRE TAME Ethanol 1 ,2-DCA EDB Lead
<br /> Sample Name Depth Date Solids
<br /> (feet) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mglkg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mgikg) (mg/kg)
<br /> (%)
<br /> MW-11 50.0 07/06/06 <0.20 2,2* <0.010 <0.010 <0.010 <0.010 <0.010 <O.D40 <0.D10 <O.010 <0.010 <0.20 <0cID <0.010 -
<br /> MW-12 20.0 07/06/06 - <0.20 1 .0* <0.010 <0.010 <0.010 <0.010 <0.010 <0,040 <0.010 <0.010 <0.010 <0.20 <0.010 <0.010 -
<br /> 35.0 07/06/06 - <0.20 1 .3* <0.010 <0.010 <0,010 <0.010 <0.010 <0,040 <0.010 <D,010 <0.010 <0.2D <0.010 <0.010 -
<br /> 50.0 07/06/06 <0.20 1 .5* <0.010 <0.010 <0.010 <0.01D <0.010 <0.040 <D.010 <D.010 <0.010 <0.20 <0.010 <0.010 -
<br /> MW-13* 20.0 07/06/06 - <0.20 1 .6* <D.00SD <p,0050 <D.0050 <0.0050 <o.ODSD <0.020 <0.0050 <0.0050 <0.0050 <0.1D <0.0050 <0.0050 -
<br /> 35.0 07/06/06 - <0.20 <1 .0 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.020 <0.0050 <0.0050 <0.0050 <D.10 <0.0050 <0.0050 -
<br /> 50.0 07/06/06 <0.20 1 .1* <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.020 <0.0050 <0.0050 <0.0050 <0.10 0.0053 <0.0050 -
<br /> MW-14 16.5 10/01/07 6.5 <0,10 1 .6 <0.0050 <O.OD50 <0.0050 <0.0050 <0.0050 <0.020 <0.0050 <0.0050 <O.OD50 - <O.0050 <0.0050 <5.D
<br /> d'- - 31 .5 10/01/07 6.2 <0.10 1.5 <0.0050 <0.0050 <0.0050 <O.DD50 <0.0050 <0.020 <0,0050 <0.0050 <0.0050 - <0.0050 <0.0050 <5.0
<br /> l 41 .5 10/01/D7 5.5 <0.10 <1 .0 <0.0050 <0.0050 <0,0050 <O.DO50 <0.0050 <0.020 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 7.0
<br /> MW-15 36.5 08/16/07 85 <0.10 5.2 <0,0050 <0.0050 <0.0050 <10050 <0.0050 <D,020 <0,0050 <0.0050 <0.0050 - <O.OD50 <0.0050 -
<br /> 41 .5 06/16/07 77 <0.10 1.6 <0.0050 <0.0050 <0,0050 <0,0050 <0.0050 <0.020 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050
<br /> MW-16 36.5 06/16/07 82 70.10 5.1 <0.0050 <0,0050 <0,0050 <0.0050 <0.0050 <0.020 <0.0050 <0.0050 <0.0050 - <0.0050 <0.0050 -
<br /> 41 .5 08/16/07 82 <0.10 1.3 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.020 <0.0050 <0.0050 <0.0050 <0.0050 <O.OD50 -
<br /> MW-17 08/17/07 Not sam pled due to Proxmity of MW-16
<br /> MW-18 41 .5 08/13/07 75 <0.10 IA <0.0050 <0.0050 <0.0050 <O.D050 <O.DO50 <0.020 <0.0050 <0,0050 <0.0050 - <0.0050 <0.0050 -
<br /> 46.5 06/13/07 79 <0.10 1.0 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.020 <0.0050 <0=5D <0.0050 - <0.0050 <0.0050 -
<br /> MW-19 26.5 09/27/07 87 <0.10 2.4 <0.0050 <0.0050 <0.0050 <0.0050 <0,0050 <0,020 <0.0050 <0.0050 <0.0050 - <0.0050 <0,0060 <5.0
<br /> 36.5 09/27/07 96 <0.10 149 <0.0050 <0,0050 <0.0050 <D.0050 <0.0050 <0.020 <0.0050 <0.0050 <0.0050 - <0.0050 <0.0050 <5.0
<br /> f, 46.5 09/27/07 84 <0.10 1 .9 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.020 <0.0050 <0.0050 <0.0050 - <0.0050 <D.0050 <5.0
<br /> MW-2D 36.5 08/20/07 87 <0.10 2.0 <0.0050 <0.0050 <0,0050 <0.0050 <0.0050 <0.020 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050
<br /> 41 .5 06/20/07 78 <0,10 1.3 <0.0050 <0.0050 <O.D050 <0.0050 <0.0050 <0.020 <0.0050 <0.005D <0.0050 - <0.0050 <0.0050
<br /> MW-21 25.5 09/28/07 87 <010 2.0 <0,0050 <0.0050 <0,0050 <D,0050 <0.0050 <D,020 <0.0050 <0.005D <0.0050 - <0.0050 <O.D050 5.4
<br /> 36.5 09/28/07 94 <0.10 1.9 <0,0050 <0.0050 <0,0050 <p.0050 <0.0050 <D.020 <0.0050 <0.0050 <0.0050 - <0.0050 <0.0050 <5,0
<br /> 46.5 09/28/07 89 <0.10 1.2 <0.0050 <0.0050 <0.0050 <0.0050 <10050 <0.020 <0.0050 <0,005D <0.0050 - <0.0050 <0.0050 <5.0
<br /> MW-22 08/17/07 Not sampled due to proximity of MW-23
<br /> MW-23 41 .5 08/15/07 80 <0,10 1 .8 <0.0050 <0.0050 <0.0050 <O.DD50 <0.0050 <0.020 <0.0050 <U.0050 <0.0050 - <0.0050 <0.0050 -
<br /> 46.5 08/15/07 81 <0.10 1 .3 <0.0050 <O.OD50 <0.0050 <O.DO50 <0.0050 <0.020 <0,0050 <0.0050 <0.0050 <0.005D <D.OD50 -
<br /> ,Vapor Wells (VW)
<br /> VW-1 (B-3) 26 12/16/91 - <1 .0 <0.005 <0,006 <0.005 <0.005 - - - - - - -
<br /> 31 12/16/91 - 3,000 - 1 .4 37 22 130 - - - - - - -
<br /> 61 12/16/91 10 0.6 0.65 0.064 0.40
<br /> 'JW-2 (B-4) 31 12/17/91 - <1 .0 - <0.005 <0.005 <0.005 <0.005 - - - - - - - -
<br /> 41 12/17/91 - 7,4 - 0.33 0.54 0.061 0.45 - - - - - - - -
<br /> 81 12/17/91 28 2,6 2.6 0.056 IA - - <5.0
<br /> VW-3 (B-5) 26 12/18/91 - <1 .0 - <0.005 <0.005 <0.005 <0.005 - - - - - - -
<br /> 31 12/18/91 - 4.6 - 0.035 0.042 0.02 0.15 - - - - - - - - -
<br /> 51 12/18/91 - 58 - 0.11 0.62 0.28 1 .7 - - - - - - - - <5.0
<br /> 61 12/18/91 140 0,39 0.97 0.58 3.4 - -VW-4 (B-7) 31 12/19/91 - 1 .7 - <0.005 0.015 0,010 0.070 - - - - - - - -
<br /> 56 12/19/91 - 530 - 0.62 4.6 3.1 17 - - - - - - - - <5.0
<br /> 61 12/19/91 14 1 .0 1 .3 0.12 0.64 - - -
<br /> VW-5 (B-1 D) 21 .5 08/14/92 - <1.0 - <0.005 <0.005 <0.005 <0.005 - - - - - - - - -
<br /> 41 .5 06/14/92 - 1.2 - 0.19 0.25 0.018 0.12 - - - - - - -
<br /> 51 .5 08/14/92 <1 .0 O.D3 0.032 <0.005 0.013 -
<br /> \/W-6 (B-11 ) 21 .5 08/17/92 - <1 .0 - 0,0074 <0.005 0.D079 0.037 - - - - - - - -
<br /> 36.5 08/17/92 - <1 ,0 - 0.021 <0.005 <0.005 <0,005 - - - - - - - -
<br /> 46.5 08/17/92 130 0.23 1.3 1.5 9.4 -
<br /> VW-7 (3-12) 31 .5 08/18/92 - <1 .0 - <0.005 <0.005 <0.005 <0.005 - - - - - - - - -
<br /> 46.5 08/18/92 <1 .0 0.032 <0.005 0.0071 0.055 - - -
<br /> VW-7 (B-12) 61 .5 08/18/92 <1 .0 0.10 0.13 0.017 0,12 - - - - - -
<br /> VW-8 (B-13) 31 .5 08/18/92 - <1 .0 - 0.0055 <0.005 <0.005 <0.505 - - - - - - -
<br /> 41 .5 08/16/92 3.3 0.36 0.29 0.13 0.72 -
<br /> 2130 Historical Soil TableAs Page 2 of 3 Stantec
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