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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, AO µ911 µg11 µ94 Aga A0 Observations
<br /> MW-5 212196 9.37 36.66 -27.29 E 270 7.6 1.5 11 9.8 NA No FP,No S,Yes 0
<br /> (cont.) (60) 5/10196 9.37 34.15 -24.78 E 5,700 420 180 380 610 34 No FTP,No S,Yes 0
<br /> (60) 8129196 9.37 35.99 -26.62 E 9,600 510 90 710 970 39 No FP,No S, Yes 0
<br /> (60) 11/20/96 9.37 34.83 -25.46 E 4,500 210 93 310 510 *<50 No PP,No S,Yes 0
<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 /> 5127/97 9.37 31.19 -21.82 E-SE 4,500 490 59 230 350 97 No FP,No S,Yes 0
<br /> (60) 8/12/97 9.37 32.76 -23.39 E 3,600 260 12 260 350 110 No FTP,No S,Yes 0
<br /> (61) 11/18/97 9.37 32.49 -23.12 E 1,300 180 12 18 88 *<25 No FP,No S,Yes 0
<br /> (61.5) 2116198 9.37 29.14 -19.77 SE 630 110 <2.5 22 8.3 44 No PP,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 0
<br /> (60) 9/29198 [P] 9.37 28.39 -19.02 E 1,790 242 <5 121 135 145 No FP,No S,Yes 0
<br /> (60) 12/30/98 [P] 9.37 26.22 -16.85 SE 275 19 <0.5 6.05 0.629 38.2 No FP,No S,Yes O
<br /> (60) 3131/99 [P] 9.37 24.71 -15.34 E-SE 93.4 8.42 <0.5 <0.5 0.835 15.7 No FTP,No S,Yes 0
<br /> (60) 6/28199 [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 0
<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 0
<br /> (60) 3128100 fP] 9.37 23.74 -14.37 SE <50 <0.5 <0.5 <0.5 <0.5 <2.5 No FP,No S,No 0
<br /> (61) 6/26/00 [P] 9.37 24.71 -15.34 E 106 1.99 <0.5 <0.5 <0.5 42[2] No FP,No S,No 0
<br /> 9/28/00 [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 0
<br /> 3/14101 [P] 9.37 24.48 -15.11 E <50 <0.5 <0.5 <0.5 <0.5 <1.0 No FP,No S,Yes 0
<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 /> 9111/01 [P] 9.37 27.95 -18.58 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,Yes 0
<br /> 12/13/01 [P] 9.37 27.20 -17.83 E-NE <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,Yes O
<br /> 3/12/02 [P] 9.37 25.53 -16.16 E <50 <0.50 <0.50 <0.50 <0.50 0.98[2] No FTP,No S,Yes 0
<br /> 6/17/02 [P] 9.37 26.53 -17.16 E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,Yes 0
<br /> 9/9/02 P 9.37 29.38 -20.01 NE <50 <0.5 <0.5 <0.5 <0.5 <0.5 No PP,No S,Yes O
<br /> 12/4/02 P 9.37 29.14 -19.77 NE <50 <0.5 0.62 <0.5 3.4 <0.5 No FP,No S,Yes O
<br /> MW-6 (58) 2115195 8.95 40.02 40..00 -31.07 E <50 <0.5 <0.5 <0.5 <0.5 NA No PP,No S,No 0
<br /> (58) 5112195 8.95 38.26 -29.31 E <50 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> (59) 8129/95 8.95 39.91 -30.96 E *<52 <0.5 <0.5 <0.5 <03 NA No FP,No S,No 0
<br /> (58) 12/4195 8.95 38.38 -29.43 E *<70 <0.5 <0.5 <0.5 <0.5 NA No PP,No S,No 0
<br /> 2/2196 8.95 36.38 -27.43 E <50 <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No 0
<br /> 0548 QMR4Q02
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