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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 m m m mglL m m Observations
<br /> VW-4 6/26/2000 NM 29.88 -- E Not scheduled for sampling No FP, No S, No O
<br /> (cont) 9/28/2000 NM 28.39 E-NE Not scheduled for sampling No FP, No S, No O
<br /> 12/18/2000 NM 26.19 E Not scheduled for sampling No FP, No S, No O
<br /> 3/14/2001 NM 24.87 E Not scheduled for sampling No FP, No S, No O
<br /> 6/19/2001 NM 26.28 E Not scheduled for sampling No FP, No S, No O
<br /> 9/11/2001 NM 29.13 -- E Not scheduled for sampling No FP, No S, No O
<br /> 12/13/2001 [NP] NM 28.50 -- E-NE <50 <0.50 <0.50 <0.50 <0.50 100[2] No FP, No S, No O
<br /> 3/12/2002 [NP] NM 26.10 -- E <50 <0.50 <0.50 <0.50 <0.50 32[2) No FP, No S, No O
<br /> 6/17/2002 [NP] NM 27.74 -- E 59[3] <0.50 <0.50 <0.50 <0.50 98[2] No FP, No S, No O
<br /> 9/9/2002 NP NM 30.28 -- NE 73 <0.5 <0.5 <0.5 <0.5 110 No FP, No S, No O
<br /> 12/4/2002 NP NM 27.51 -- NE 94 <0.5 1.8 0.53 23 39 No FP, No S, No O
<br /> 3/3/2003 NP NM 26.25 -- SE <50 <0.5 <0.5 <0.5 <0.5 0,88[2] No FP, No S, No O
<br /> 6/3/2003 NP NM 26.13 - <50 <0.50 <0.50 <0.50 <0.50 0.95[2] No FP, No S, No O
<br /> VW-5S 12/30/1996 NM Well not located Inaccessible because of soil stockpiles
<br /> 3/31/1999 NM NM -- -- Not scheduled for sampling No FP, Yes S, Yes O
<br /> 6/28/1999 NM Dry - Not scheduled for sampling NM
<br /> 9/10/1999 NM 14.63 -- Not scheduled for sampling No FP, No S, No O
<br /> 12/13/1999 NM 14.64 -- Not scheduled for sampling No FP, No S, No O
<br /> 3/28/2000 NM 14.56 - Not scheduled for sampling No FP, No S, No O
<br /> 6/26/2000 NM DRY -- -- Not scheduled for sampling No FP, No S, No O
<br /> 9/28/2000 NM DRY - Not scheduled for sampling No FP, No S, No O
<br /> 12/18/2000 NM 11.48 E Not scheduled for sampling No FP, No S, No O
<br /> 3/14/2001 NM 10.44 -- E Not scheduled for sampling No FP, No S, No O
<br /> 6/19/2001 NM 14.23 E Not scheduled for sampling No FP, No S, No O
<br /> 9/11/2001 NM 13.87 E Not scheduled for sampling No FP, No S, No O
<br /> 12/13/2001 NM DRY E-NE Not scheduled for sampling No FP, No S, No O
<br /> 3/12/2002 [NP] NM 9.75 -- E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP, No S, No O
<br /> 6/17/2002 [NP] NM 13.07 E 190[3] <0.50 <0.50 <0.50 6.3 0.53[2] No FP, No S, No O
<br /> 9/9/2002 NP NM 12.73 -- NE <50 <0.5 <0.5 <0.5 <0.5 <0.5 No FP, No S, No O
<br /> 12/4/2002 NP NM 8.67 -- NE <50 <0.5 <0.5 <0.5 <0.5 <0.5 No FP, No S, No O
<br /> 3/3/2003 NP NM 11.04 -- SE <50 <0.5 <0.5 <0.5 <0.5 <0.5[2] No FP, No S, No O
<br /> 6/3/2003 NP NM 10.88 - <50 <0.50 <0.50 <0.50 <0.50 <0.5[2] No FP, No S, No O
<br /> K.MprocessW5 BP ARC01005481Quarter1y10548 QMR 2Q03 9 of 11
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