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<br /> TABLE 1
<br /> Groundwater Elevation and Analytical Data
<br /> ARCO Service Station No.548
<br /> 1612 Hammer Lane,Stockton,Califomia
<br /> Well Top of Static Top Groundwater Ethyl- Total
<br /> Sample Sample Casing Water of Groundwater Flow TPHg Benzene Toluene benzene Xylenes ME[1)
<br /> Number _pate Elevation Level Screen Elevation Direction ug/L ug/L ug/L Fg/L ug/!- ug/L Observations
<br /> MW-6 (58) 2/15/1995 8.95 40.02 40..00 -31.07 E <50 <0,5 <0.5 <0.5 <05 NA No FP,No S,No O
<br /> (58) 5/12/1995 8.95 38.26 -29.31 E <50 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (59) 8/29/1995 8.95 39.91 -30.96 E "<52 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (5B) 12/4/1995 8.95 38.38 -29.43 E "<70 <0.5 <0,5 <0.5 <0.5 NA No FP,No S,No O
<br /> 2!2/1996 8.95 36.38 -27.43 E <50 <0.5 <0,5 <0.5 <0.5 NA No FP,No S,No O
<br /> (59) 5/10/1996 8.95 33.88 -24.93 E <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (59) 8/29/1996 8.95 35.66 -26.71 E <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (59) 11/20/1996 8.95 34.57 -25.62 E <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (57) 3/19/1997 8.95 30.83 -21.88 E-SE <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> 5/27/1997 8.95 31.16 -22.21 E-SE <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (59) 8/12/1997 8.95 32.55 -23.60 E <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (57) 11/18/1997 8.95 32.19 -23.24 E 54 5.9 5.8 1.6 9.2 <5 No FP,No S,No O
<br /> (57) 2/16/1998 8.95 28.83 -19.88 SE <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (57) 6/23/1998 [P] 8.95 26,36 -17.41 SE <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (57) 9/29/1998 (P] 8.95 28.19 -19.24 E <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (59) 12/30/1998 [P] 8.95 25.91 -16.96 SE <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (59) 3/31/1999 [P] 8.95 24.37 -15.42 E-SE <50 0.623 <0.5 <0.5 <0.5 12.2 No FP,No S,No O
<br /> (59) 6/28/1999 [P] 8.95 25.59 -16.64 SE <50 <0.5 <0.5 <0.5 <0.5 18.1 No FP,No S,No O
<br /> (59) 9/10/1999 [P] 8.95 27.62 -18.67 E <50 <0.5 <0.5 <0.5 <0.5 17.8 No FP,No S,No O
<br /> (59) 12/13/1999 [P] 8.95 26.62 -17.67 E <50 <0.5 <0,5 <0,5 <0.5 9.35 No FP,No S,No O
<br /> (59) 3/28/2000 [P] 8.95 23.39 -14.44 SE <50 <0.5 <0,5 <0,5 <0.5 9,01 No FP,No S,No O
<br /> (57) 6/26/2000 [P] 8.95 24.41 -15.46 E <50 <0.5 <0.5 <0.5 <0.5 14[2] No FP,No S,No O
<br /> 9/28/2000 [P] 8.95 27.00 -18.05 E-NE <50 <0.5 <0.5 <0,5 <0.5 5.31 No FP,No S,No O
<br /> 12/18/2000 [P] 8.95 25.66 -16.71 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 3/14/2001 [P] 8.95 24.17 -15.22 E <50 <0.5 <0.5 <0.5 <0.5 2.12 No FP,No S,No O
<br /> 6/19/2001 [P] 8.95 25.16 -16.21 E <50 <0.5 <0.5 <0.5 <0.5 7.2(2] No FP,No S,No O
<br /> 9/11/2001 [P] 8.95 27.69 -18.74 E <50 <0.5 <0.5 <0.5 <0.5 6.B(2] No FP,No S,No O
<br /> 12/13/2001 (P] 8.95 26.95 -18.00 E-NE <50 <0.50 <0.50 <0.50 0.73 21[2] No FP,No S.No O
<br /> 3/12/2002 (P) 8.95 25.13 -16.18 E <50 <0.50 <0,50 <0.50 <0.50 0.53[2] No FP,No S.No O
<br /> 6/17/2002 [P] 8.95 26,22 -17,27 E <50 <0.50 <0.50 <0.50 <0.50 7.7[2] No FP,No S.No O
<br /> 9/9/2002 P 8.95 29,11 -20.16 NE <50 <0.5 <0.5 <0.5 <0.5 1.0 No FP,No S,No 0
<br /> 12/4/2002 P 8.95 28.86 -19.91 NE <50 <0.5 <0.5 <0.5 <0.5 <0.5 No FP,No S,No O
<br /> 3/3/2003 P 8,95 29,04 -20.09 SE <50 <0.5 <0.5 <0.5 <0.5 <0.5[2] No FP,No S,No O
<br /> 6/3/2003 P 8.95 29,00 -20.05 SE <50 <0.50 <0.50 <0.50 <0.50 <0.5[2] No FP,No S,No O
<br /> 9/18/2003 -- 8.95 -- SE Not Sampled
<br /> 12/8/2003 P 8,95 30.52 -21.57 NE-SW <50 <0.50 <0.50 t0.50 <0.50 <0.50[2] No FP,No S,No 0
<br /> K UprocessV5 BP ARC01005481QuarterlyA QTR 0410548 QMR 4Q03 Page 6 of 10
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