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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-4 5/27/1997 11.57 33.21 -21.64 E-SE <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O
<br /> (cant.) (62) 8/12/1997 11.57 34.45 -22.88 E <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (64) 11/18/1997 11.57 34.31 -22.74 E <50 4.5 2.5 0.91 2.1 <5 No FP,No S,No O
<br /> (63.8) 2/16/1998 11.57 31.17 -19.60 SE <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 6/23/1998 [P] 11,57 28.52 -16.95 SE X50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 9/29/1998 [P] 11.57 30.13 -18.56 E <50 <0.5 <0.5 <0.5 <0.5 <5 No FTP,No S,No O
<br /> 12/30/1998 11.57 NM -- SE -----------------------Well inaccessible---------------------
<br /> (62) 3/31/1999 [P] 11.57 26.69 -15.12 E-SE <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 6/28/1999 [P] 11.57 27.66 46.09 SE <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 9/10/1999 [P] 11.57 29.54 -IT97 E <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O
<br /> (62) 12/I3/1999 [P] 11.57 28.80 -17.23 E <50 <0.5 <0.5 <0.5 <0.5 <2.5 No FP,No S,No O
<br /> (62) 3/28/2000 [P] 11.57 25.71 -14.14 SE <50 <0.5 <0.5 <0.5 <0.5 <2.5 No FP,No S,No O
<br /> (63) 6/26/2000 [P] 11.57 26.53 -14.96 E <50 <0.5 <0.5 <0.5 <0.5 <2.0[2] No FP,No S,No O
<br /> 9/28/2000 [P] 11.57 28.94 -17.37 E-NE <50 <0.5 <0.5 <0.5 <0.5 <2.5 No FP,No S,No O
<br /> 12/18/2000 [P] 11.57 27,75 -16.18 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 3/14/2001 [P] 11.57 26.42 -14.85 E <50 <0.5 <0.5 <0.5 <0.5 <1.0 No FP,No S,No O
<br /> 6/19/2001 [P] 11.57 27.26 -15.69 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 9/11/2001 [P] 11.57 29.65 -18.08 E <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 12/13/2001 [P] 11.57 29.10 -17.53 E-NE <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> 3/12/2002 [P] 11.57 27.40 -15.83 E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> 6/17/2002 [P] 11.57 28.26 -16.69 E <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S,No O
<br /> 9/9/2002 P 11.57 31.03 -19.46 NE <50 <0.5 <0.5 <0.5 <0.5 <0.5 No FP,No S,No O
<br /> MW-5 (60) 2/15/1995 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) 5/12/1995 9.37 38.95 -29.08 E 5,000 560 110 400 600 NA No FP,No S, Yes O
<br /> (60) 8/29/1995 9.37 40.07 -30.70 E 5,700 410 150 310 590 NA No FP,No S, Yes O
<br /> (61) 12/4/1995 9.37 38.63 -29.26 E 1,200 55 11 83 92 NA No FP,No S, Yes O
<br /> 2/2/1996 9.37 36.66 -27.29 E 270 7.6 1.5 11 9.8 NA No FP,No S,Yes O
<br /> (60) 5/10/1996 9.37 34.15 -24.78 E 5,700 420 180 380 610 34 No FP,No S. Yes O
<br /> (60) 8/29/1996 9.37 35.99 -26.62 E 9,600 510 90 710 970 39 No FP,No S, Yes O
<br /> (60) 11/20/1996 9.37 34.83 -25.46 E 4,500 210 93 310 510 *<50 No FP,No S, Yes O
<br /> (60) 3/19/1997 9.37 31.12 -21.75 E-SE 6,200 420 68 360 590 ***<60 No FP,No S,Yes O
<br /> 5/27/1997 9.37 31.19 -21.82 E-SE 4,500 490 59 230 350 97 No FP,No S, Yes O
<br /> (60) 8/12/1997 9.37 32.76 -23.39 E 3,600 260 12 260 350 110 No FP,No S, Yes O
<br /> (61) 11/18/1997 9.37 32.49 -23.12 E 1,300 180 12 18 88 *<25 No FP,No S, Yes O
<br /> 0548 QMR3Q02
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