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TA*1 <br /> GROUNDWATER MONITORING DATA <br /> ARCO Service Station No 2130 <br /> 7906 North El Dorado Street, Stockton, California <br /> Elevation Static Water Groundwater Ethyl- Total <br /> Well Top of Casing Top of Screen Level Elevation TPHG Benzene Toluene benzene Xylene MTBE <br /> Number Date (feet msl feet b s feet b s) (feet msl} L IL IL /L g/L L Observations <br /> MW-1 02/28/95 1458 6000 54 21 -3963 340 21 <0 5 06 <0 5 NA No FP,No S <br /> 05/19/95 1458 5241 -3783 210 29 <0 5 07 <0 5 NA No FP,No S <br /> 08/28/95 1458 5404 -3946 240 32 <0 5 1 0 <0 5 NA No FP,No S <br /> 12/07/95 1458 5267 -3809 190 17 <0 5 <0 5 <0 5 NA No FP,No S <br /> 02/05/96 1458 50 11 -35 53 230 25 <0 5 05 <0 5 NA No FP,No S <br /> 05/30/96 1458 47 17 -3259 180*** 12 <0 5 <0 5 <0 5 <4** No FP,No S <br /> 09/18/96 1458 5096 -3638 200 1 6 <0 5 <0 5 <0 5 <5** No FP,No S <br /> 11/26/96 1458 4880 -3422 220 1 5 <0 5 <0 5 <0 5 5 No FP,No S <br /> 03/24/97 1458 4373 -29 15 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> 05/20/97 1458 4432 -2974 230 <7** <0 6** <0 5 05 <5** No FP,No S <br /> 08/19/97 1458 4778 -3320 200 65 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 11/19/97 1458 4595 -31 37 170 70 077 <0 5 063 <5 No FP,No S <br /> 03/04/98 1458 41 33 -2675 <50 051 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 06/26/98 1458 39 13 -2455 248 173 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 09/01/98 1458 4089 -2631 249 5 19 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 12/02/98 1458 3820 -23 62 227 <0 5 <0 5 <0 5 <0 5 127 No FP,No S <br /> 03/31/99 1458 3468 -20 10 152 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 06/04/99 1458 3598 -2140 168 263 <0 5 <0 5 <0 5 109 No FP,No S <br /> 09/02/99 1458 4049 -2591 232 104 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 11/29/99 1458 3864 -2406 129 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> 03/16/00 1458 3466 -2008 55 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> 06/26/00 1458 3726 -2268 175 <0 5 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> 09/28/00 1458 4149 -2691 86 9[3] 2 14 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> 12/19/00 1458 37 17 -2259 <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> 03/15/01 1458 3500 -2042 <50 <2 [4] 11 <br /> <2 [41 <2 [4] <2 [4] <2[2] No FP,No S <br /> C lARC0121301QTRLY1200012130 Quarterly Data XLS Delta <br /> 1 of 12 514/01 <br />