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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 /L Observations
<br /> VW-5S 12130/1998 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 /> 1211311999 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 /> 6/2612000 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 /> 12/11V2001 NM DRY •- E-NE Not scheduled for sampling No FP,No S,No O
<br /> 3/12/2002 IN P) 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 [NPI 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 SE <50 <0.50 <0.50 <0.50 <0.50 <0.5[2] No FP,No S,No O
<br /> 9/18/2003 •- NM DRY - SE Not Sampled
<br /> VW-5D 12/30/1998 NM Well not located Inaccessible because of soil stockpiles
<br /> 3/31/1999 NM 25.65 -• E-SE Not scheduled for sampling No FP,Yes S,Yes O
<br /> 6/28/1999 NM 26.74 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 28.20 E Not scheduled for sampling No FP,No S,No O
<br /> 3x28/2000 NM 24.97 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 6/26/2000 NM 29.81 E Not scheduled for sampling No FP,No S.No O
<br /> 9/28/2000 NM 28.31 E-NE Not scheduled for sampling No FP,No S,No O
<br /> 12/1812000 NM E Not scheduled for sampling Yes FP,Yes S,Yes O
<br /> 3/14/2001 NM 25.00 E Not scheduled for sampling Yes FP
<br /> 6/19/2001 NM 24.95 E Not scheduled for sampling No FP,No S,Yes O
<br /> 9/11/2001 NM 28.00 E Not scheduled for sampling No FP,No S,Yes O
<br /> 12/1312001 [NP] NM 28.42 E-NE 54,000 840 2,300 1,100 17,000 67[2] No FP,No S,No O
<br /> 3/12/2002 IN P] NM 25.65 E 1,400[3] <5.0 8.0 <5.0 96 <2.5[2](5) No FP,No S,No O
<br /> 6/17/2002 (N P] NM 27.67 -- E 3,300 12 40.0 36 1,200 <2.5[2] No FP,No S.No O
<br /> 9/9/2002 NP NM 29.39 NE 3,100 <5 <5 <5 870 <5 No FP,No S,No O
<br /> 12/4/2002 NP NM 29.65 •- NE 3,200 <100 <100 220 3200 <100 No FP,No S,No O
<br /> 3/3/2003 NP NM 27.48 SE 1,400 7,0 11 23 480 <5.0 No FP,No S,No O
<br /> 6/3/2003 NP NM 27.28 SE 650 7.2 2.6 J 1.5 210 <1.0[2] No FP,No 5,No O
<br /> 9/18/2003 - NM DRY -- SE Not Sampled
<br /> K:SWproom%J5 BP AR=005481QU0e6yk3 QTR 0=548 QMR 3003 Page 9 of 7D
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