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<br /> Table 1
<br /> Groundwater Elevation and Analytical Data
<br /> Former ARCO Service Station#4932
<br /> 16 E.Harding Way,Stockton,CA
<br /> Well Depth Groundwater Groundwater Ethyl- Xylenes
<br /> Well Date Elevation to Water Elevation Elevation TPI-Ig Benzene Toluene benzene (total) MtBE DO
<br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L)
<br /> MW-1 915100 P 12,41 27,13 -14.72 -- 1,470 128 73.2 5.12 254 268* --
<br /> 11/2/00 P 27.76 -15.35 -0.63 1,040 138 68,0 18.8 101 3861280* 3.0
<br /> 3/5/01 P 27.13 -14.72 0.63 834 125 55.0 20.5 127 3791376* 3.9
<br /> 518101 P 26.75 -14.34 0.38 600 78.1 24.7 17.2 85.4 954/1,000* 0.57
<br /> 7120/01 P 28.11 -15.70 -1.36 <500 <5.0 <5.0 <5.0 <5.0 7501990* -
<br /> MW-2 915100 P 13.11 27.60 -14.49 -- 1,330 39.4 1.94 34.3 104 1420* --
<br /> 11/2/00 P 28.29 -15.18 -0.69 10,700 169 <25.0 1,930 230 4,020/3,900* 2.6
<br /> 3/5/01 P 27.64 -14.53 0.65 7,750 106 176 1,580 579 12,00012,860* 3.6
<br /> 5/8/01 P 27.26 -14.15 0.38 8,750 116 154 1,900 923 3070/2,660* 0.71
<br /> 7/20101 P 28.56 -15.45 -1.30 <5,000 <50 <50 870 <50 1,900/1,900* -
<br /> MW-3 915/00 P 11.70 27.13 -15.43 -- 499 29.4 <0.50 <0.50 15.5 5.62*
<br /> 11/2/00 P 26.41 -14.71 0.72 116 6.55 <0.500 <0.500 1.42 > <2.50/29* 1.7
<br /> �- 3/5101 P 26.21 -14.51 0.20 79.9 6.46 <0.500 <0.500 0.653 <2.50/2.64* 3.8
<br /> 518/01 P 25.83 -14.13 0.38 <50.0 <0.500 <0.500 <0.500 <0.500 3.6313.98* 0.48
<br /> 7/20/01 P 27.24 -15.54 -1.41 <50 <0.50 <0.50 <0.50 <0.50 7.7/2.2* --
<br /> MW-4 915100 P 11.98 26.63 -14.65 -- 166,000 10,500 43,600 5,230 25,400 708,000 --
<br /> 11/2/00 P 27.32 -15.34 -0.69 180,000 9,400 42,600 5,260 26,900 376,0001350,000' 3.3
<br /> 13/5/01 P 26.63 -14.65 0.69 165,000 10,700 45,300 5,020 26,500 596,0001466,000* 4.2
<br /> 518101 P 26.26 •14.28 0.37 149,000 9,660 45,300 5,280 26,800 372,000/500,000` 0.44
<br /> 7120/01 P 27.41 -15.43 -1.15 Not sampled:0.02 ft free product present
<br /> MW-5 7120101 P 11.78 27.77 -15.99 - <50 <0.50 <0.50 <0.50 <0.50 <2.5/<2.0* --
<br /> MW-6 7120/01 P 11.50 27.43 -15.93 - <5,000 <50 <50 <50 <50 57,000/67,000-
<br /> MW-7 7120101 P 11.00 26.73 -15.73 - <50 <0.50 <0.50 <0.50 <0.50 180/<2.0* -
<br /> MW-8 7120101 P 12.99 28.44 -15.45 -- <50 <0.50 <0.50 <0.50 <0.50 6.0/<2,0* --
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