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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 Elevation Static Top Elevation Groundwater Ethyl- Total
<br /> Sample of Top Water of of Flow TPHg Benzene Toluene benzene Xylenes MtBE[1]
<br /> Number Date of Casing Level Screen Groundwater Direction µget µga µell µeft ILO µ0 Observations
<br /> VW-3 3/31/99 NM 25.87 -- E-SE Not scheduled for sampling No FP,No S,No O
<br /> (cont.) 6/28/99 NM 26.88 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 9/10/99 NM 28.89 - E Not scheduled for sampling No FP,No S,No O
<br /> 12/13/99 NM 28.06 -- E Not scheduled for sampling No FP,No S,No O
<br /> 3/28100 NM 24.88 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 6/26/00 NM 29.78 -- E Not scheduled for sampling No FP,No S,No O
<br /> 928/00 NM 28.30 -- E-NE Not scheduled for sampling No FP,No S,No O
<br /> 12/18/00 NM 26.08 - E Not scheduled for sampling No PP,No S,No O
<br /> 3/14/01 NM 24.20 - E Not scheduled for sampling No PP,No S,No O
<br /> 6/19101 NM 26.50 -- E Not scheduled for sampling No FP,No S,No O
<br /> 9/1I/01 NM 29.02 -- E Not scheduled for sampling No FP,No S,No O
<br /> 12/13/01 [NP] NM 28.35 -- E-NE 1,100 150 <5.0 7.6 16 16[21 No FP,No S,No O
<br /> 3/12/02 [NP] NM 24.80 -- E <50 <0.50 <0.50 <0.50 <0.50 0.72[21 No FP,No S,No O
<br /> 6117/02 [NP] NM 27.60 -- E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> 919/02 NP NM 29.45 -- NE <50 5.5 <0.5 4.5 1.4 1.6 No FP,No S,No O
<br /> 12/4102 NP NM 30.69 -- NE 610 19 1.9 <0.5 7.9 4.6 No FP,No S,No O
<br /> VW-4(42) 9/29/98 [NP] NM 29.35 24.00 -- E 328 1.71 <0.5 1.10 6.12 2,560 No PP,No S,Yes O
<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 /> 3/31/99 NM 25.81 -- E-SE Not scheduled for sampling No FP,No S,No O
<br /> 6/28/99 NM 26.94 -- 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 28.12 -- E Not scheduled for sampling No FP,No S,No O
<br /> 328/00 NM 24.89 -- SE Not scheduled for sampling No FE No S,No O
<br /> 626100 NM 29.88 -- E Not scheduled for sampling No FP,No S,No O
<br /> 928100 NM 28.39 -- E-NE Not scheduled for sampling No PP,No S,No O
<br /> 12/18/00 NM 26.19 -- E Not scheduled for sampling No PP,No S.No O
<br /> 3/14/01 NM 24.87 -- E Not scheduled for sampling No FP,No S,No O
<br /> 6/19/01 NM 26.28 -- E Not scheduled for sampling No PP,No S.No O
<br /> 9/11101 NM 29.13 -- E Not scheduled for sampling No FP,No S,No O
<br /> I2/13/01 [NP] NM 28.50 -- E-NE <50 <0.50 <0.50 <0.50 <0.50 100[2] No PP,No S,No O
<br /> 3/12/02 [NP] NM 26.10 - E <50 <0.50 <0.50 <0.50 <0.50 32[2] No FP,No S,No O
<br /> 6/17/02 [NP] NM 27.74 -- E 59[3] <0.50 <0.50 <0.50 <0.50 98[2] No FP,No S,No O
<br /> 9/9/02 NP NM 30.28 -- NE 73 <0.5 <0.5 <0.5 <0.5 110 No FP,No S,No O
<br /> 0548 QMR4Q02
<br /> 8 of 10
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