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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 Pg/L pg/L Pg/L Pg/L Pg/L Pg/L 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 9.82 39,08 -29.26 E '<60 <0.50 <0.50 <0.50 <0.50 NA No FP,No S,No O
<br /> 2/2J1996 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) 5/10/1996 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) 8/29/1996 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 9.82 35.25 -25.43 E <50 <0.50 <0.50 <0.50 <0.50 <3 No FP,No S,No O
<br /> (61) 3/19/1997 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 32.88 -23.06 E <50 2.6 1.4 0.65 1.5 <5 No FP,No S,No O
<br /> (60) 7/16/1998 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) 12130/1998 [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) 3131/1999 [P] 9.82 25.11 -15.29 E-SE <50 <0.50 <0.50 <0.50 <0.50 <5 No FP,No S,No O
<br /> (60) 6/28/1999 [P) 9.82 26.25 -16,43 SE <50 <0.50 <0.50 <0.50 <0.50 <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) 12113/1999 [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) 3/28/2000 (P) 9.82 24.07 -14.2.5 SE <50 <0.50 <0.50 <0.50 <0.50 <2.5 No FP,No S,No O
<br /> (61) 6/26/2000 [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 /> 9/2812000 [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 /> 12/1812000 [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 /> 3/14/2001 [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 /> 12113/2001 [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 /> 311212002 [P) 9.82 26.01 -16.19 E <50 <0.50 <0.50 <0.50 <0.50 1.6[2] No FP,No S,Yes O
<br /> 6/17/2002 [P] 9.82 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 /> 1214!2002 P 9.82 29.63 -19.81 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 /> 6/3/2003 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 /> 12/8/2003 P 9.82 31.32 -21.50 NE-SW <50 c0.50 <0.50 <0,50 <0,50 1.3[2] No FP,No S,No O
<br /> KMprocessUS BP ARC01005481Quarterly\4 QTR 0410548 QMPI 4003 N8e 2 of 10
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