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<br /> TABLE 1
<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 Casing Level Screen Groundwater Direction TPHG Benzene Toluene benzene Xylenes MTBE III Observations
<br /> VW-1 (43) 9129198 [NP] NM 28.73 25.00 -- E 18,800 573 59.0 873 4,120 2,300 No FP,No S,Yes O
<br /> (43) 12/30/98 [NP] NM 26.50 SE 19,200 2,150 <50 691 3,310 785 No FP,No S,Yes O
<br /> 3131199 NM 24.97 E-SE Not scheduled for sampling No FP,No S,No O
<br /> 6128199 NM 25.99 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 9/10/99 NM 28.33 -- E Not scheduled for sampling No FP,No S,No O
<br /> 12/13/99 NM 27.46 -- E Not scheduled for sampling No FP,No S,No O
<br /> 3/28/00 NM 24.23 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 6126/00 NM 25.11 -- E Not scheduled for sampling No FP,No S,No O
<br /> 9128/00 NM 27.72 -- E-NE Not scheduled for sampling No FP,No S,No O
<br /> 12/18/00 NM 25.50 -- E Not scheduled for sampling No FP,No S,No O
<br /> 3/14/01 NM 24.33 -- E Not scheduled for sampling No FP,No S,No O
<br /> 6/19/01 NM 25.50 -- E Not scheduled for sampling No FP,No S,No O
<br /> 9/11/01 NM 26.28 -- E Not scheduled for sampling No FP,No S,No O
<br /> 12/13/01 [NP] NM 27.74 E-NE <50 2.5 <0.50 <0.50 <0.50 87[2] No FP,No S,No O
<br /> 3112/02 [NP] NM 25.20 -- E <50 <0.50 <0.50 <0.50 <0.50 0.68[2] No FP,No S,No O
<br /> 6/17/02 [NP] NM 26.95 <50 0.64 <0.50 <0.50 <0.50 7.8[2] No FP,No S,No O
<br /> VW-2 (41) 9/29/98 [NP] NM 29.01 25.00 -- E 13,200 822 <12.5 1,370 754 <125 No FP,No S,Yes O
<br /> (41) 12/30/98 [NP] NM 27.47 -- SE 8,950 778 <20 1,180 339 <200 No FP,No S,Yes O
<br /> 3/31/99 NM 25.21 -- E-SE Not scheduled for sampling No FP,No S,No O
<br /> 6/28/99 NM 26.35 SE Not scheduled for sampling No FP,No S,No O
<br /> 9/10/99 NM 29.29 -- E Not scheduled for sampling No FP,No S,No O
<br /> I2/13/99 NM 28.43 -- E Not scheduled for sampling No FP,No S,No O
<br /> 3128/00 NM 25.24 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 6/26/00 NM 26.10 -- E Not scheduled for sampling No FP,No S,No O
<br /> 9/28/00 NM 28.69 E-NE Not scheduled for sampling No FP,No S,No O
<br /> 12/18/00 NM 26.51 -- E Not scheduled for sampling No FP,No S,No O
<br /> 3/14/01 NM 24.40 -- E Not scheduled for sampling No FP,No S,No O
<br /> 6/19/01 NM 25.15 -- E Not scheduled for sampling No FP,No S,No O
<br /> 9111/01 NM 29.40 -- E Not scheduled for sampling No FP,No S,No O
<br /> 12/13/01 [NP] NM 28.75 -- E-NE 180[3] 2.6 <0.50 <0.50 <0.50 1.5[2] No FP,No S,No O
<br /> 3/12/02 [NP] NM 26.48 -- E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> 6/17/02 [NP] NM 28.03 - <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> Arco_0548_Quarter1y_llata.XtS
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