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TABLE 1
<br /> GROUNDWATER MONITORING DATA
<br /> ARCO Service Station No. 548
<br /> 1612 Hammer Lane, Stockton, California
<br /> Well Elevation Static Top Elevation Groundwater
<br /> Sample of Top Water of of Flow Ethyl- Total
<br /> ]Number Date of Casing Level Screen Groundwater Direction TPHG Benzene Toluene benzene Xylenes MTBE [1[ Observations
<br /> VW-3 (40) 09/29/98 [NP] NM 29.45 -- E 39,300 2,360 391 1,540 9,790 <500 No FP,No S,Yes0
<br /> (40) 12/30/98 [NP] NM 27.28 -- SE 40,500 3,450 287 2,370 11,700 <500 No FP,No S,Yes O
<br /> 03/31/99 NM 25.87 -- E-SE Not scheduled for sampling No FP,No S,No 0
<br /> 06/28/99 NM 26.88 -- SE Not scheduled for sampling No FP,No S,No 0
<br /> 09/10/99 NM 28.89 -- E Not scheduled for sampling No FP,No S,No 0
<br /> 12/13/99 NM 28.06 -- E Not scheduled for sampling No FP,No S,No 0
<br /> 03/28/00 NM 24.88 -- SE Not scheduled for sampling No FP,No S,No 0
<br /> 06/26/00 NM 29.78 -- E Not scheduled for sampling No FP,No S,No 0
<br /> 09/28/00 NM 28.30 -- E-NE Not scheduled for sampling No FP,No S,No 0
<br /> 12/18/00 NM 26.08 -- E Not scheduled for sampling No FP,No S,No 0
<br /> 03/14/01 NM 24.20 -- E Not scheduled for sampling No FP,No S,No O
<br /> VW-4 (42) 09/29/98 [NP] NM 29.35 -- E 328 1.71 <0.5 1.10 6.I2 2,560 No FP,No S,Yes 0
<br /> (42) 12/30/98 [NP] NM 27.20 SE 97.2 <0.5 0.562 <0.5 0.746 2,240 No FP,No S,No O
<br /> 03/31/99 NM 25.81 -- E-SE Not scheduled for sampling No FP,No S,No 0
<br /> 06/28/99 NM 26.94 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 09/10/99 NM 29.00 -- E Not scheduled for sampling No FP,No S,No 0
<br /> 12/13/99 NM 28.12 -- E Not scheduled for sampling No FP,No S,No O
<br /> 03/28/00 NM 24.89 -- SE Not scheduled for sampling No FP,No S,No 0
<br /> 06/26/00 NM 29.88 -- E Not scheduled for sampling No FP,No S,No O
<br /> 09/28/00 NM 28.39 -- E-NE Not scheduled for sampling No FP,No S,No 0
<br /> 12/18/00 NM 26.19 -- E Not scheduled for sampling No FP,No S,No O
<br /> IL- 03/14/01 NM 24.87 -- E Not scheduled for sampling No FP,No S,No 0
<br /> CAIARC0105481QTR1,Y1200010548 Quarterly Data.XLS Delta
<br /> 8 of 10 1/30101
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