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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
<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 /> MW-6 (59) 12/30/1998 [P] 8.95 25.91 -16.96 SE <50 <0.5 <0.5 <0,5 <0.5 <5 No FP,No S,No O
<br /> (cont.) (59) 3/31/1999 [P] 8.95 24.37 -15.42 E-SE <50 0.623 <0.5 <0.5 <0.5 12.2 No FP,No S,No O
<br /> (59) 6/28/1999 [P] 8.95 25.59 -16.64 SE <50 <0.5 <0.5 <0.5 <0.5 18.1 No FP,No S,No O
<br /> (59) 9/10/1999 [P] 8.95 27.62 -18.67 E <50 <0.5 <0.5 <0.5 <05 17,8 No FP,No S,No O
<br /> (59) 12/13/1999 [P] 8.95 26.62 -17.67 E <50 <0.5 <0.5 <0.5 <0.5 9.35 No FP,No S,No O
<br /> (59) 3/28/2000 [P] 8.95 23.39 -14.44 SE <50 <0.5 <0.5 <0,5 <0.5 9.01 No FP,No S,No O
<br /> (57) 6/26/2000 [P] 8.95 24.41 -15.46 E <50 <0.5 <0.5 <0.5 <0.5 14[2] No FP,No S,No O
<br /> 9/28/2000 [P] 895 27.00 -18.05 E-NE <50 <0.5 <0.5 <0.5 <0.5 5.31 No FP,No S,No O
<br /> 12/18/2000 [P] 8.95 25.66 -16.71 E <50 <0,5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 3/14/2001 [P] 8.95 24.17 -15.22 E <50 <0.5 <0.5 <0.5 <0.5 2.12 No FP,No S,No O
<br /> 6/19/2001 [P] 8.95 25.16 -16.21 E <50 <0.5 <0.5 <0.5 <0.5 7.2[2] No FP,No S,No O
<br /> 9/11/2001 [P] 8.95 27.69 -18.74 E <50 <0.5 <0.5 <0.5 <0.5 6.8[2] No FP,No S,No O
<br /> 12/13/2001 [P] 8.95 26.95 -18.00 E-NE <50 <0,50 <0.50 <0.50 0.73 21[2] No FP,No S,No O
<br /> 3/12/2002 [P] 8.95 25.13 -16.18 E <50 <0.50 <0.50 <0.50 <0.50 0.53[2] No FP,No S,No O
<br /> 6/17/2002 [P] 8.95 26,22 -17.27 E <50 <0.50 <0.50 <0.50 <0.50 7.7[2] No FP,No S,No O
<br /> 9/9/2002 P 8.95 29.11 -20.16 NE <50 <0,5 <0.5 <0.5 <0.5 1.0 No FP,No S,No O
<br /> VW-1 (43) 9/29/1998 [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) 12/30/1998 [NP] NM 26.50 -- SE 19,200 2,150 <50 691 3,310 785 No FP,No S,Yes O
<br /> 3/31/1999 NM 24.97 -- E-SE Not scheduled for sampling No FP,No S,No O
<br /> 6/28/1999 NM 25.99 -- SE Not scheduled for sampling No FP,No S,No O
<br /> 9/10/1999 NM 28.33 -- E Not scheduled for sampling No FP,No S,No O
<br /> 12/13/1999 NM 27.46 -- E Not scheduled for sampling No FP,No S,No O
<br /> 3/28/2000 NM 24.23 -- SE Not scheduled for sampling No PF,No S,No O
<br /> 6/26/2000 NM 25.11 -- E Not scheduled for sampling No FP,No S,No O
<br /> 9/28/2000 NM 27.72 -- E-NE Not scheduled for sampling No FP,No S,No O
<br /> 12/18/2000 NM 25.50 -- E Not scheduled for sampling No FP,No S,No O
<br /> 3/14/2001 NM 24.33 -- E Not scheduled for sampling No FP,No S,No O
<br /> 6/19/2001 NM 25.50 -- E Not scheduled for sampling No FP,No S,No O
<br /> 9/11/2001 NM 26.28 -- E Not scheduled for sampling No FP,No S,No O
<br /> 12/13/2001 [NP] NM 27.74 - E-NE <50 2.5 <0.50 <0.50 <0.50 87[21 No FP,No S,No O
<br /> 3/12/2002 [NP] NM 25.20 -- E <50 <0.50 <0.50 <0.50 <0.50 0.68[2] No FP,No S,No O
<br /> 6/17/2002 [NP] NM 26.95 -- E <50 <0.50 <0.50 <0.50 <0.50 7.8[2] No FP,No S,No O
<br /> 9/9/2002 NP NM 29.54 -• NE <50 0.55 <0.5 <0.5 <0.5 60 No FP,No S,No O
<br /> 0548 QMR3Q02
<br /> 6 of 10
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