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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 Casina Level Screen Groundwater Direction TPHG Benzene Toluene benzene Xylenes__MTBE [l Observations
<br /> MW-5 (60) 2115/95 9.37 40.28 42.00 -30.91 E 6,700 420 87 620 1,100 NA No FP,No S,No O
<br /> (61) 5/12/95 9.37 38.95 -29.08 E 5,000 560 Ho 400 600 NA No FP,No S, Yes O
<br /> (60) 8/29/95 9.37 40.07 -30.70 E 5,700 410 150 310 590 NA No FP,No S, Yes O
<br /> (61) 12/4/95 9.37 38.63 -29.26 E 1,200 55 11 83 92 NA No FP,No S, Yes O
<br /> 2/2/96 9.37 36.66 -27.29 E 270 7.6 1.5 11 9.8 NA No FP,No S, Yes O
<br /> (60) 5110196 9.37 34.15 -24.78 E 5,700 420 180 380 610 34 No FP,No S,Yes O
<br /> (60) 8/29/96 9.37 35.99 -26.62 E 9,600 510 90 710 970 39 No FP,No S,Yes O
<br /> (60) 11/20/96 9.37 34.83 -25.46 E 4,500 210 93 310 510 *<50 No FP,No S,Yes O
<br /> (60) 3/19/97 9.37 31.12 -21.75 E-SE 6,200 420 68 360 590 ***<60 No FP,No S, Yes O
<br /> 5/27/97 9.37 31.19 -21.82 E-SE 4,500 490 59 230 350 97 No FP,No S, Yes O
<br /> (60) 8/12/97 9.37 32.76 -23.39 E 3,600 260 12 260 350 110 No FP,No S, Yes O
<br /> (61) 11/18/97 9.37 32.49 -23.12 E 1,300 180 12 18 88 *<25 No FP,No S,Yes O
<br /> (61.5) 2/16/98 9.37 29.14 -19.77 SE 630 110 <2.5 22 8.3 44 No FP,No S,Yes O
<br /> (60) 6/23/98 [P] 9.37 26.61 -17.24 SE 702 50.4 7.91 33.3 36.6 47.3 No FP,No S,Yes O
<br /> (60) 9/29/98 [P] 9.37 28.39 -19.02 E 1,790 242 <5 121 135 145 No FP,No S,Yes O
<br /> (60) 12/30/98 [P] 9.37 26.22 46.85 SE 275 19 <0,5 6.05 0.629 38.2 No FP,No S,Yes O
<br /> (60) 3/31/99 [P] 9.37 24.71 -15.34 E-SE 93.4 8.42 <0.5 <0.5 0.835 15.7 No FP,No S,Yes O
<br /> (60) 6/28/99 [P] 9.37 25.88 -16.51 SE 175 22.4 <0.5 1.15 2.03 32.8 No FP,No S,Yes O
<br /> (60) 9/10/99 [P] 9.37 27.87 -18.50 E 614 41.9 <0.5 10.9 29.3 93.6 No FP,No S,Yes O
<br /> (60) 12/13/99 (P] 9.37 26.92 -17.55 E <50 <0.5 <0.5 <0.5 <0.5 7.52 No FP,No S,No O
<br /> (60) 3/28/00 [P] 9.37 23.74 -14.37 SE <50 <0.5 <0.5 <0.5 <0.5 <2.5 No FP,No S,No O
<br /> (61) 6/26100 [P] 9.37 24.71 -15.34 E 106 1.99 <0.5 <0.5 <0.5 42[2] No FP,No S,No O
<br /> 9128100 [P] 9.37 27.24 -17.87 E-NE 137 <0.5 <0.5 <0.5 <0.5 47.4 No FP,No S,No O
<br /> 12/18/00 [P] 9.37 25.87 -16.50 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 3/14/01 [P] 9.37 24.48 -15.11 E <50 <0.5 <0.5 <0.5 <0.5 <1.0 No FP,No S,Yes O
<br /> 6/19/01 [P] 9.37 25.43 -16.06 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,Yes O
<br /> 9/11/01 [P] 9.37 27.95 -18.58 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S, Yes O
<br /> Arco_0548_Quaj1erly_Da1aA LS
<br /> 5 Of 10 Delta
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