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TaTI e 1 <br /> Page 6of7 ` <br /> Groundwater Monitoring Data <br /> 1995 to Present <br /> ARCO Service Station No 2130 <br /> 7906 North El Dorado Street, Stockton, California <br /> Well Elevation Static Water Groundwater Ethyl- Total <br /> Number Date Top of Casing Top of Screen Level EIevation TPHG Benzene Toluene benzene Xylene MTBE Observations <br /> MW-10 11/26/96 1438 53 00 4872 -3434 <600*** <0 5 <05 <0 5 <05 <10** No FP, No S <br /> MW-10 03/24/97 1438 5300 43 77 -2939 <500*** <5** <0 8** <0 5 <05 <7** No FP,No S <br /> MW-10 05/20/97 1438 53 00 4420 -2982 460 <5** <0 5 <0 5 <0 5 <7** No FP,No S <br /> MW-10 08/19/97 1438 5300 4766 -3328 440 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-10 11/19/97 1438 53 00 4595 -3157 510 2 2 2 2 0 93 31 <5 No FP, No S <br /> MW-10 03/04/98 1438 53 00 4143 -2705 110 066 <0 5 <0 5 <0 5 <5 No FP, No S <br /> MW-10 06/26/98 1438 5300 3911 -24 73 329 4 75 <0 5 <0 5 <05 <5 No FP, No S <br /> MW-10 09/01/98 1438 5300 4078 -2640 295 <0 5 <0 5 <0 5 <05 <5 No FP,No S <br /> VW-1 05/20/97 NM 4400 4416 NE 340,000 330 540 2,100 13,000 <1,200* No FP,No S <br /> VW-1 09/01/98 NM 4400 4175 NA NA NA NA NA NA NA NA <br /> VW-7 05/20/97 NM 3500 4505 NE 56 0 6 <0 5 <0 5 08 4 No FP, No S <br /> VW-7 09/01/98 NM 3500 4163 NA NA NA NA NA NA NA NA <br /> VW-8 05/20/97 NM 4000 4481 NE 25,000 480 290 260 3,900 <120* No FP,No S <br /> VW-8 09/01/98 NM 4000 4023 NA NA NA NA NA NA NA NA <br /> VW-12 05/20/97 NM 5500 4378 NE 1,500 150 1 58 <1* <6* No FP, No S <br /> VW-12 09/01/98 NM 5500 4065 NA NA NA NA NA NA NA NA <br /> Analytical results to parts per billion(ppb) <br /> TBE was analyzed using USEPA Method 8020 <br /> Measurements to feet <br /> Datum to mean sea level <br /> Static water level measured in feet below top of casing <br /> CP1D 1QMR13RDQTRARC012130Q398 XLS <br /> Table 1 <br /> �4KK�e <br /> 11/19/98 <br />