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Table 1 <br /> Groundwater Monitoring Data <br /> 1995 to Present <br /> ARCO Service Station No 2130 <br /> 7906 North El Dorado Street, Stockton, California <br /> i <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 bgs) (feet b s) (feet msl) L µglL µglL µglL µglL µgJL Observations <br /> MW-1 02/28/95 1458 6000 5421 -3963 340 2 1 <0 5 0 6 <0 5 NA No FP,No S <br /> MW-1 05/19/95 1458 5241 -37 83 210 2 9 <0 5 0 7 <0 5 NA No FP,No S <br /> MW-1 08/28/95 1458 5404 -3946 240 3 2 <0 5 1 0 <0 5 NA No FP,No S <br /> MWA 12/07/95 1458 5267 -38 09 190 1 7 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-1 02/05/96 1458 50 11 -35 53 230 2 5 <0 5 0 5 <0 5 NA No FP,No S <br /> MW-1 05/30/96 1458 47 17 -3259 180*** 12 <0 5 <0 5 <0 5 <4** No FP,No S <br /> MW-1 09/18/96 1459 5096 -3638 200 16 <0 5 <0 5 <0 5 <5** No FP,No S <br /> MW-1 11/26/96 1458 48 80 -34 22 220 1 5 <0 5 <0 5 <0 5 5 No FP,No S <br /> MW-1 03/24/97 1458 4373 -29 15 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-1 05/20/97 1458 4432 -2974 230 <7** <0 6** <0 5 0 5 <5** No FP,No S <br /> MW-1 08/19/97 14 58 4778 -33 20 200 6 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-1 11/19/97 14 58 45 95 -31 37 170 7 0 077 <0 5 063 <5 No FP,No S <br /> MW-1 03/04/98 1458 4133 -2675 <50 051 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-1 06/26/98 14 58 39 13 -24 55 248 1 73 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-1 09/01/98 1458 40 89 -2631 249 519 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-1 12/02/98 14 58 3820 -23 62 227 <0 5 <0 5 <0 5 <0 5 127 No FP,No S <br /> MW-1 03/31/99 1458 3468 -20 10 152 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-1 06/04/99 14 58 35 98 -2140 168 263 <0 5 <0 5 <0 5 109 No 1;P,No S <br /> MW-1 09/02/99 14 58 4049 -25 91 232 104 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-1 11/29/99 1458 38 64 -24 06 129 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> MW-1 03/16/00 14 58 3466 -2009 55 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> MW-1 06/26/00 1459 3726 -2268 175 <0 5 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> MW-1 09/28/00 1458 41 9 -2691 86 9[31 2 14 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> PAVILION1MyDocumentslARC0121301QTRLY1200012130Q300 Delta <br /> Page 1 of 10 11122/00 <br />