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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 /> 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 ms1) (feet b s) (feet bgs) (feet msl) µgf L g/L µg/L µ L pg/L µg/L Observations <br /> MW-6 02/28/95 14 55 5900 5454 -3999 55 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-6 05/19/95 1455 5259 -3804 96*** <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-6 08/28/95 1455 54 25 -3970 120 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-6 12/07/95 1455 5291 -3836 <200** <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-6 02/05/96 1455 5039 -35 84 130 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-6 05/30/96 1455 4738 -3283 140*** <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-6 09/18/96 1455 5126 -3671 <200*** <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-6 11/26/96 1455 4901 -3446 <200*** <0 5 <0 5 <0 5 <0 5 <4** No FP,No S <br /> MW-6 03/24/97 1455 43 97 -2942 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-6 05/20/97 1455 44 52 -2997 180 <2** <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-6 08/19/97 1455 48 12 -3357 190 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-6 11/19/97 1455 4626 -3171 95 3 4 2 1 1 0 2 5 <5 No FP,No S <br /> MW-6 03/04/98 1455 41 63 -2708 60 1 6 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-6 06/26/98 1455 3933 -2478 101 0 734 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-6 09/01/98 1455 4101 -2646 205 0 684 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-6 12/02/98 1455 3842 -23 87 124 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-6 03/31/99 1455 34 84 -2029 676 162 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-6 06/04/99 1455 3606 -2151 118 1 77 <0 5 <0 5 <0 5 8 86 No FP,No S <br /> MW-6 09/02/99 1455 4063 -2608 201 284 <0 5 <0 5 <0 5 141 No FP,No S <br /> MW-6 11/29/99 1455 3878 -2423 53 0 839 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> MW-6 03/16/00 1455 34 84 -2029 <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> MW-6 06/26/00 1455 3735 -2280 191 129 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> MW-6 09/28/00 1.4 55 4161 -2706 <50 250 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> PAVILION1MyDocumentsLARC0121301QTRLY1200012130Q300 Delta <br /> Page 6 of 10 11/22/00 <br />