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<br /> TABLE 1
<br /> GROUNDWATER ELEVATION AND ANALYTICAL DATA
<br /> 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[1] Observations
<br /> MW-3 (62) 8/29/1996 9.95 36.21 -26.26 E **<90 <0.5 <0.5 <0.5 <0.5 *<4 No FP,No S,No O
<br /> (cont.) (62) 11/20/1996 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) 3/19/1997 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 /> 5/27/1997 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) 8/12/1997 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) 11/18/1997 9.95 32.95 -23.00 E <50 1.5 0.87 <0.5 0.68 <5 No FP,No S,No O
<br /> (63) 2/16/1998 9.95 29.05 -19.10 SE 140 0.50 0.71 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 6/23/1998 [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) 9/29/1998 [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) 12/30/1998 [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) 3/31/1999 [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) 6/28/1999 [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) 9/10/1999 [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) 12/13/1999 [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) 3/28/2000 [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) 6/26/2000 [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 /> 9/28/2000 [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 /> 12/18/2000 [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 /> 3/14/2001 [P] 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 /> 6/19/2001 [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 /> 9/11/2001 [Pj 9.95 28.41 -18.46 E <50 <0.5 <0.5 <05 <0.5 <2[2] No FP,No S,No O
<br /> 12/13/2001 [P] 9.95 27.77 -17.82 E-NE <50 <0.50 <0.50 <0.50 <0.50 <0.50121 No FP,No S,No O
<br /> 3/12/2002 [P] 9.95 25.94 -15.99 E <50 <0.50 <0.50 <0.50 <0.50 <0.50121 No PP,No S,No O
<br /> 6/17/2002 [P] 9.95 27,02 -17.07 E <50 <0.50 <0,50 <0.50 <0.50 <0.5012] No FP,No S,No O
<br /> 9/9/2002 P 9.95 29.85 -19.90 NE <50 <0.5 <0.5 <0.5 <0.5 <0.5 No FP,No S,No O
<br /> MW-4 (63) 2/15/1995 11.57 42.12 44.00 -30.55 E <50 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (63) 5/12/1995 11.57 40.28 -28.71 E <50 <0.5 <0,5 <0.5 <0.5 NA No FP,No S,No O
<br /> (63) 8/29/1995 11.57 41,72 -30.15 E <50 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (63) 12/4/1995 11.57 40.44 -28.87 E <50 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> 2/2/1996 11.57 38.54 -26.97 E <50 <0,5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (63) 5/10/1996 11.57 36.02 -24.45 E <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (63) 8/29/1996 11.57 37.60 -26.03 E <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (63) 11/20/1996 11.57 36.71 -25.14 E <50 <0,5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (63) 3/19/1997 11.57 33.08 -21.51 E-SE <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> 0548 QMR3QD2
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