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TABLE 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) (ft btc) (ft btc) (feet ms1) µg/L µglL µg/L µg/L µg/L ga Observations <br /> MW-2 03/13/02 15 19 3721 -22 02 <50 0 62 <0 50 <0 50 <0 50 2 5[2] No FP,No S <br /> (cont) 06/18/02 15 19 37 38 -2219 <50 150 <0 50 <0 50 170 2 6[2] No FP,No S <br /> 09/11/02 15 19 4449 -2930 <50 1 1 <0 50 <0 50 <0 50 3 0[2] No FP,No S <br /> 12/18/02 1519 4194 -2675 <50 <0 50 <0 50 <0 50 <0 50 2 5[2] No FP,No S <br /> MW-3 02/28/95 1610 6000 5588 -3978 73 0 7 <0 5 <0 5 <0 5 NA No FP,No S <br /> 05/19/95 1610 5394 -37 84 52*** <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> 08/28/95 1610 5564 -3954 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> 12/07/95 1610 5430 -3820 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> 02/05/96 1610 5173 -35 63 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> 05/30/96 1610 4879 -3269 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> 09/18/96 16 10 5273 -3663 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> 11/26/96 16 10 5041 -3431 <50 19 <0 5 <0 5 <0 5 <3 No FP,No S <br /> 03/24/97 1610 4529 -29 19 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> 05/20/97 1610 45 93 -2983 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> 08/19/97 1610 4956 -3346 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 11/19/97 1610 4762 -3152 <50 13 1 1 <0 5 0 83 <5 No FP,No S <br /> 03/04/98 1610 4295 -2685 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 06/26/98 16 10 4067 -2457 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 09/01/98 16 10 4250 -2640 716 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 12/02/98 16 10 3975 -2365 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 03/31/99 16 10 36 17 -2007 <50 0 54 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 06/04/99 1610 3756 -2146 102 0 569 <0 5 445 0 885 <5 No FP,No S <br /> 09/02/99 1610 4216 -2606 <50 <05 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 11/29/99 1610 4024 -24 14 <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> 03/16/00 1610 3621 -2011 <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> 06/26/00 1610 38 89 -2279 <50 <0 5 <05 <0 5 <0 5 <2[2] No FP,No S <br /> 09/28/00 1610 43 14 -27 04 59 3 [3] <0 5 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> 12/19/00 1610 3872 -2262 <50 <0 5 <05 <0 5 <0 5 <2 5 No FP,No S <br /> 03/15/01 1610 3653 -2043 <50 <2 [41 <2[4] <2 [4] <2 [4] <2[21 No FP,No S <br /> 06/20/01 1610 3990 -2380 <50 <2 [4] <2[4] <2 [4] <2 [4] <2[21 No FP,No S <br /> Arco_2 l 30_4QMR02 <br /> 3 of 12 <br />