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<br /> TABLE 1
<br /> GROUNDWATER MONITORING DATA
<br /> Former ARCO Service Station No. 548
<br /> 1612 Hammer Lane, Stockton, California
<br /> Well Elevation Static Top Elevation Groundwater
<br /> Sample of Top Water of of Flow Ethyl- Total
<br /> Number Date of Casing Level Screen Groundwater Direction TPHG Benzene Toluene benzene Xylenes MTBE[11 Observations
<br /> MW-3 (62) 2/15/95 9.95 40.69 43.00 -30.74 E **84 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (62) 5/12/95 9.95 38.80 -28.85 E **100 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (62) 8/29/95 9.95 40.27 -30.32 E *<170 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (62) 12/4/95 9.95 39.06 -29.11 E *<150 <0.5 <0.5 <0.5 <0.5 NA Na FP,No S,No O
<br /> 2/2/96 9.95 37.10 -27.15 E *<100 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (62) 5/10/96 9.95 34.53 -24.58 E **<100 <0.5 <0.5 <0.5 <0,5 <3 No FP,No S,No O
<br /> (62) 8/29/96 9.95 36.21 -26.26 E **<90 <0.5 <0.5 <0.5 <0.5 *<4 No FP,No S,No O
<br /> (62) 11/20/96 9.95 35.31 -25.36 E **<90 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (62) 3/19/97 9.95 31.54 -21.59 E-SE **<80 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> 5/27/97 9.95 31.16 -21.21 E-SE **<70 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (62) 8/12/97 9.95 33.14 -23.19 E <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 11/18/97 9.95 3295 -23.00 E <50 1.5 0.87 <0.5 0.68 <5 No FP,No S,No O
<br /> (63) 2/16/98 9.95 29.05 -19.I0 SE 140 0.50 0.71 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 6/23/98 [P] 9.95 26.94 -16.99 SE <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 9/29/98 [P] 9.95 28.72 -18.77 E <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 12/30/98 [P] 9.95 26.56 -16.61 SE <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 3131/99 [P] 9.95 25.09 -15.14 E-SE <50 <0.5 <0.5 <0.5 <0.5 17 No FP,No S,No O
<br /> (62) 6/28199 [P] 9.95 26.25 -16.30 SE <50 <0.5 <0.5 <0.5 <0.5 23.6 No FP,No S,No O
<br /> (62) 9/10/99 [P] 9.95 28.28 -18.33 E <50 <0.5 <0.5 <0.5 <0.5 27.7 No FP,No S,No O
<br /> (62) 12/13/99 [P] 9.95 27.35 -17.40 E <50 <0.5 <0.5 <0.5 <0.5 <2.5 No FP,No S,No O
<br /> (62) 3/28/00 [P] 9.95 24.13 -14.18 SE <50 <0.5 <0.5 <0.5 <0.5 18.0 No FP,No S,No O
<br /> (63) 6/26100 [P] 9.95 25.14 -15.19 E <50 <0.5 <0.5 <0.5 <0.5 6.3[2] No FP,No S,No O
<br /> 9/28/00 [P] 9.95 27.67 -17.72 E-NE <50 <0.5 <0.5 <0.5 <0.5 107 No FP,No S,No O
<br /> 12/I8/00 [P] 9.95 26.37 -16.42 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 3/14101 fP] 9.95 24.92 -14.97 E <50 <0.5 <0.5 <0.5 <0.5 <1.0 No FP,No S,No O
<br /> 6/19/01 [P] 9.95 25.91 -15.96 E <50 <0.5 <0.5 <0.5 <0.5 .<2[2] No FP,No S,No O
<br /> 9/11/01 [P] 9.95 28.41 -18.46 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 12/13/01 [P] 9.95 27.77- -17.82 E-NE <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> 3/12/02 [P] 9.95 25.94 -15.99 E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> 6/17102 [P] 995 27.02 -17.07 <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> A rco_0548_Qua rterl y_Data.X LS
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