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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 Top of Static Top Groundwater Ethyl- Total
<br /> Sample Sample Casing Water of Groundwater Flow TPHg Benzene Toluene benzene Xylenes MtBE[1]
<br /> Number Date Elevation Level Screen Elevation Direction Observations
<br /> MW-2 (61) 2/15/1995 9.82 40.67 47.00 -30.85 E <50 <0.50 <0.50 <0.50 <0.50 NA No FP,No S,No O
<br /> (61) 5/12/1995 9.82 38.85 -29.03 E <50 <0.50 <0.50 <0,50 <0.50 NA No FP,No S,No O
<br /> (61) 8/29/1995 9.82 40.44 -30.62 E '<52 <0.50 <0.5 1.0 <0.50 NA No FP,No S,No O
<br /> (61) 12/4/1995 8.82 39.08 -29.26 E '<60 <0.50 <0.50 <0.50 <0,50 NA No FP,No 5,No O
<br /> 2/211996 9.82 37.09 -27.27 E <50 <0.50 <0,50 <0.50 <0.50 NA No FP,No S,No O
<br /> (61) 5!1011996 9.82 34.55 -24.73 E <50 <0.50 <0.50 <0.50 <0.50 <3 No FP,No S,No O
<br /> (61) 8!2911996 9.82 36.29 -26.47 E -<60 <0.50 <0,50 <0.50 <0.50 <3 No FP,No S,No O
<br /> (61) 11/20/1996 8.82 35.25 -25.43 E <50 <0.50 <0.50 <0.50 <0.50 <3 No FP,No S,No O
<br /> (61) 3/19/1897 9,82 31.52 -21.70 E-SE <50 0.6 <0.50 <0.50 <0.50 <3 No FP,No S.No O
<br /> 5/27/1997 9.82 31.79 -21.97 E-SE <50 1.2 <0.50 <0.50 <0.50 <3 No FP,No S,No O
<br /> (60) 8/12/1997 9.82 33.18 -23.36 E 52 <0.50 <0.50 <0,50 <0.50 <5 No FP,No S.No O
<br /> (61) 11/18/1997 9.82 32.68 -23.06 E <50 2.6 1.4 0.65 1.5 <5 No FP,No S,No O
<br /> (60) 2/16/1998 9.82 29.48 -19.66 SE <50 <0.50 <0.50 <0.50 <0.50 <5 No FP,No S,No O
<br /> (60) 6/23/1998 [P] 9,82 26.98 -17.16 SE <50 <0.50 <0.50 <0.50 <0.50 <5 No FP,No S,No O
<br /> (60) 9/29/1998 [P] 9.82 28.78 -18.96 E <50 <0.50 <0.50 <0.50 <0.50 <5 No FP,No S,No O
<br /> (60) 12/30/1998 [P] 9.82 26.53 -16.71 SE <50 <0.50 <0.50 <0,50 <0.50 <5 No FP,No S,No O
<br /> (60) 331/1999 (P] 9.82 25.11 -15.29 E-SE <50 <0.50 <0.50 <0.50 <0.50 <5 No FP,No 5,No O
<br /> (60) 6/28/1999 (P] 9.82 26.25 -16.43 SE <50 <0.50 <D,50 <0.50 <0.5D <5 No FP,No S,No O
<br /> (60) 9/10/1999 [P] 9,82 28.28 -18.46 E <50 <0.50 <0.50 <0.50 <0.50 <5 No FP,No S,No O
<br /> (60) 12/13/1999 ]P] 9.82 27.35 -17.53 E <50 <0.50 <0.50 <0.50 <0.50 3.48 No FP,No S,No O
<br /> (60) 312812000 [P] 9,82 24.07 -14.25 SE <50 <0.50 <0.50 <0.50 <0.50 <2.5 No PP,No S,No O
<br /> (61) 612612000 [P] 9.82 25.12 -15.30 E <50 <0.50 <0.50 <0.50 <0.50 <2.0[2] No FP,No S,No O
<br /> 9128/2000 [P] 9.82 27.68 -17,86 E-NE <50 <0.50 <0.50 <0.50 <0.50 <2.5 No FP,No S,No O
<br /> 1211812000 [P] 9.82 26,29 -16.47 E <50 <0.50 <0.50 <0.50 <0.50 <2[2] No FP,No S,No O
<br /> V14/2001 [P] 9.82 25.00 -15,18 E <50 <0.50 <0.50 <0,50 <0.50 <5.0 No FP,No S,No O
<br /> 6/19/2001 [P] 9.82 25.88 -16,06 E <50 <0.50 <0.50 <0.50 <0.50 <2[2] No FP,No S,No O
<br /> 9/11/2001 (P] 9.82 28.41 -18,59 E <50 <0.50 <0,50 <0,50 <0.50 <2[2] No FP,No S,Yes O
<br /> 12/1312001 [P] 9,82 27.70 -17.88 E-NE <50 <0.50 <0.50 <0.50 <0.50 1.3[2] No FP,No S,Yes O
<br /> 3/12/2002 [P] 9.82 26.01 -16.18 E <50 <O.50 <0.50 <0.50 <0.50 1.6[2] No FP,No S,Yes O
<br /> 6/17/2002 [P] 9,62 26.98 -17.16 E <50 <0.50 <0.50 <0.50 <0.50 1.4(2] No FP,No S,No O
<br /> 9/9/2002 P 9.82 29.84 -20.02 NE <50 <0.50 <0.50 <0.50 <0.50 1.6 No FP,No S,No O
<br /> 12/412002 P 9.82 29.63 -18.81 NE <50 <0.50 1.6 <0.50 3.1 2.0 No FP,No S,No O
<br /> 3/3/2003 P 9.82 27.85 -18.03 SE <50 <0.50 <0.50 <0.50 <0.5 1.7[2] No FP,No S,No O
<br /> 613/2003 P 9.82 27.90 -18.08 SE <50 <0.50 <0.50 <0.50 <0.50 0.94[2] No FP,No S,No O
<br /> 9/18/2003 P 9.82 31.42 -21.60 SE <50 <0.50 <0.50 <0.50 <0.50 1.3[2] No FP,No S,No O
<br /> K',11NpromsV5 SP AROM005481Ouarterip OTR 0310548 QW 3003 Page 2 of 10
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