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TO, 1 <br /> Groundwater Monitoring Data <br /> ARCO Service Station No. 2130 - <br /> 7906 North EI Dorado Street, Stockton, California <br /> Page 3 of 7 <br /> Well Elevation Static Water Groundwater Total <br /> Number Date Top of Casing Top of Screen Level Elevation TPHG Benzene Toluene Eth lbenzene Xylene MTBE Observations <br /> MW-3 09/15/92 1610 6607 4997 NA NA NA NA NA NA No FP,No S <br /> MW-3 10/06/92 1610 6620 -5010 300 58 <0 5 <0 5 18 NA No FP,No S <br /> MW-3 11/11/92 1610 6550 -4940 NA NA NA NA NA NA No FP,No S <br /> MW-3 12/04/92 1610 6423 -48 15 NA NA NA NA NA NA No FP,No S <br /> MW-3 01/20/93 1610 6345 -4735 420 65 07 <0 5 45 NA No FP,No S <br /> MW-3 03/22/93 1610 6157 -4547 NA NA NA NA NA NA No FP,No S <br /> MW-3 04/06/93 1610 6108 -4498 200 30 <0 5 <0 5 27 NA No FP,No S <br /> MW-3 07/30/93 1610 6182 -4572 89 15 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-3 11/29/93 16 10 6083 -4473 120 5 1 <0 5 <0 5 19 NA No FP,No S <br /> MW-3 03/23/94 1610 5591 -3981 580 24 15 29 14 NA No FP,No S <br /> MW-3 06/22/94 1610 5602 -3992 <10 03 <0 3 <0 3 <0 5 NA No FP,No S <br /> MW-3 09/28/94 1610 5992 -4382 <50 07 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-3 12/01/94 1610 5880 -4270 <50 08 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-3 02/28/95 1610 5588 -3978 73 07 <0 5 <0 5 <0 5 NA No FP, No S <br /> MW-3 05/19/95 1610 5394 -3784 52*** <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-3 08/28/95 1610 5564 -3954 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-3 12/07/95 16 10 5430 -3820 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-3 02/05/96 1610 5173 -3563 <50 <0 5 <0 5 <0 5 <0 5 NA No FP, No S <br /> I111V-3 0500/90 1610 4979 -3209 X511 <U 5 <I1 5 X10 5 <0 5 <i No r'1', No S <br /> MW-3 09/18/96 16 10 5273 -3663 <50 <0 5 <0 5 <0 5 <0 5 <i No FP, No S <br /> MW-4 08/10/92 1457 5500 6434 -4977 NA NA NA NA NA NA No FP, No S <br /> MW-4 08/28/92 --- --- --- 1,200 310 270 23 140 NA No FP,No S <br /> MW-4 09/15/92 1457 6445 -4988 NA NA NA NA NA NA No FP,No S <br /> MW-4 10/06/92 1457 6460 -5003 260 26 3 5 <0 5 22 NA No FP,No S <br /> MW-4 11/11/92 1457 6387 -4940 NA NA NA NA NA NA No FP,No S <br /> MW-4 12/04/92 1457 63 12 -4855 NA NA NA NA NA NA No FP,No S <br /> MW-4 01/20/93 1457 6183 -4726 820 160 69 <5* 71 NA No FP,No S <br /> MW-4 03/22/93 1457 5995 -4538 NA NA NA NA NA NA No FP,No S <br /> MW-4 04/06/93 1457 5944 -4487 1,000 250 26 <2 5 I20 NA No FP,No S <br /> MW-4 07/30/93 1457 6023 4566 880 220 50 45 68 NA No FP,No S <br /> MW-4 11/29/93 1457 WELL INACCESSIBLE No FP,No S <br /> MW-4 03/23/94 1457 5429 -3972 580 97 17 43 29 NA No FP,No S <br /> NWOW\]1406\1 00996M I xis Rev 2 10/25/96 <br />