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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 m m mq& m m m Observations
<br /> VW-2 3/12/2002 [NP] NM 26.48 -- E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP, No S, No O
<br /> (cont) 6/17/2002 [NP] NM 28.03 -- E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP, No S, No O
<br /> 9/9/2002 NP NM 30.75 -- NE 200 2.3 0.77 <0.5 <0.5 4.4 No FP, No S, No O
<br /> 1214/2002 NP NM 30.25 -- NE 770 18 <0.5 <0.5 <0.5 5.4 No FP, No S, No O
<br /> 3/3/2003 NP NM 28.88 -- SE <100 <1.0 <1.0 <1.0 <1.0 <1.0[2] No FP, No S, No O
<br /> 6/3/2003 NP NM 28.64 <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP, No S, No O
<br /> VW-3 (40) 9/29/1998 [NP] NM 29.45 22.00 -- E 39,300 2,360 391 1,540 9,790 <500 No FP, No S, Yes O
<br /> (40) 12/30/1998 [NP] NM 27.28 SE 40,500 3,450 287 2,370 11,700 <500 No FP, No S,Yes O
<br /> 3/31/1999 NM 25.87 - E-SE Not scheduled for sampling No FP, No S, No O
<br /> 6/28/1999 NM 26.88 SE Not scheduled for sampling No FP, No S, No O
<br /> 9/10/1999 NM 28.89 -- E Not scheduled for sampling No FP, No S, No O
<br /> 12/13/1999 NM 28.06 E Not scheduled for sampling No FP, No S, No O
<br /> 3/28/2000 NM 24.88 SE Not scheduled for sampling No FP, No S, No O
<br /> 6/26/2000 NM 29.78 E Not scheduled for sampling No FP, No S, No O
<br /> 9/28/2000 NM 28.30 E-NE Not scheduled for sampling No FP, No S, No O
<br /> 12/18/2000 NM 26.08 -- E Not scheduled for sampling No FP, No S, No O
<br /> 3/14/2001 NM 24.20 E Not scheduled for sampling No FP, No S, No O
<br /> 6/19/2001 NM 26.50 E Not scheduled for sampling No FP, No S, No O
<br /> 9/11/2001 NM 29.02 E Not scheduled for sampling No FP, No S, No O
<br /> 12/13/2001 [NP] NM 28.35 - E-NE 1,100 150 <5.0 7.6 16 16[2} No FP, No S, No O
<br /> 3/12/2002 [NP] NM 24.80 E <50 <0.50 <0.50 <0.50 <0.50 0.72[2] No FP, No S, No O
<br /> 6/17/2002 [NP] NM 27.60 -- E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP, No S, No O
<br /> 9/9/2002 NP NM 29.45 NE <50 5.5 <0.5 <0.5 1.4 1.6 No FP, No S, No O
<br /> 12/4/2002 NP NM 30.69 -- NE 610 19 1.9 <0.5 7.9 4.6 No FP, No S, No O
<br /> 3/3/2003 NP NM 28.51 -- SE 1,300 20 1.8 2.3 11 3.6[2] No FP, No S, No O
<br /> 6/3/2003 NP NM 28.55 - 83 4.3 <0.50 <0.50 <0.50 2.7[2] No FP, No S, No O
<br /> VW-4 (42) 9/29/1998 [NP] NM 29.35 24.00 -- E 328 1.71 <0.5 1.10 6.12 2,560 No FP, No S,Yes O
<br /> (42) 12/30/1998 [NP] NM 27.20 SE 97.2 <0.5 0.562 <0.5 0.746 2,240 No FP, No S, No O
<br /> 3/31/1999 NM 25.81 -- E-SE Not scheduled for sampling No FP, No S, No O
<br /> 6/28/1999 NM 26.94 -- SE Not scheduled for sampling No FP, No S, No O
<br /> 9/10/1999 NM 29.00 - E Not scheduled for sampling No FP, No S, No O
<br /> 12/13/1999 NM 28.12 E Not scheduled for sampling No FP, No S. No O
<br /> 3/28/2000 NM 24.89 SE Not scheduled for sampling No FP, No S, No O
<br /> K:%WprocesslJ5 BP APG0k0054810uar1er1y10548 0MR 2003 8 of 1l
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