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<br /> TABLE 1
<br /> r-
<br /> GROUNDWATER MONITORING DATA
<br /> Former 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 Casins Level Screen Groundwater Direction TPHG Benzene Toluene benzene Xylenes MTBE[11 Observations
<br /> VW-5S 12/30/98 NM Well not located Inaccessible because of soil stockpiles
<br /> 3/31/99 NM NM -- -- Not scheduled for sampling No FP,Yes S,Yes O
<br /> 6/28/99 NM Dry -- -- Not scheduled for sampling NM
<br /> 9/10/99 NM 14.63 -- -- Not scheduled for sampling No FP,No S,No O
<br /> 12/13/99 NM 14.64 -- -- Not scheduled for sampling No FP,No S,No O
<br /> 3/28100 NM 14.56 -- Not scheduled for sampling No FP,No S,No O
<br /> 6/26/00 NM DRY -- -- Not scheduled for sampling No FP,No S,No O
<br /> 9/28100 NM DRY -- -- Not scheduled for sampling No FP,No S,No O
<br /> 12/18/00 NM 11.48 -- E Not scheduled for sampling No FP,No S,No O
<br /> 3/14101 NM 10.44 -- E Not scheduled for sampling No FP,No S,No O
<br /> 6/19/01 NM 14.23 -- E Not scheduled for sampling No FP,No S,No O
<br /> 9/11/01 NM 13.87 -- E Not scheduled for sampling No FP,No S,No O
<br /> 12/13/01 NM DRY -- E-NE Not scheduled for sampling No FP,No S,No O
<br /> 3112102 [NP] NM 9.75 -- E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> 6117102 [NP] NM 13.07 -- 190[3] <0.50 <0.50 <0.50 6.3 0.53[2] No FP,No S,No O
<br /> VW-51) 12/30/98 NM Well not located Inaccessible because of soil stockpiles
<br /> 3/31/99 NM 25.65 -- E-SE Not scheduled for sampling No FP,Yes S,Yes O
<br /> 6/28/99 NM 26.74 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 9/10/99 NM 29.00 -- E Not scheduled for sampling No FP,No S,No O
<br /> 12/13/99 NM 28.20 -- E Not scheduled for sampling No FP,No S,No O
<br /> 3/28/00 NM 24.97 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 6/26/00 NM 29.81 -- E Not scheduled for sampling No FP,No S,No O
<br /> 9128100 NM 28.31 -- E-NE Not scheduled for sampling No FP,No S,No O
<br /> 12/18/00 NM -- -- E Not scheduled for sampling Yes FP,Yes S,Yes O
<br /> 3/14101 NM 25.00 -- E Not scheduled for sampling Yes FP
<br /> I 6/19/01 NM 24.95 -- E Not scheduled for sampling No FP,No S,Yes O
<br /> 9/11/01 NM 28.00 -- E Not scheduled for sampling No FP,No S,Yes O
<br /> 12/13/01 [NP] NM 28.42 -- E-NE 54,000 840 2,300 1,100 17,000 67[2] No FP,No S,No O
<br /> 3/12/02 [NP] 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 /> 6/17/02 [NP] NM 27.67 -- 3,300 12 40 36 1,200 <2.5[2] No FP,No S,No O
<br /> Arco_0548_Q ua rterl y_Da ta.X LS
<br /> 9of10
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