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TABLE I <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 msl) Observations <br /> MW-3 09/12/01 1610 44 19 -28 09 <50 <2 [4] <2[4] <2[4] <2[4] <2[2] No FP,No S <br /> (cont) 12/12/01 1610 4090 -2480 <50 <1 0[4] <1 0[4] <1 0[4] <1 0[4] <0 50[2] No FP,No S <br /> 03/13/02 16 10 3800 -2190 <50 <0 50 <0 50 <0 50 <0 50 <0 50[2] No FP,No S <br /> 06/18/02 1610 4027 -24 17 <50 <0 50 <0 50 <0 50 <0 50 <0 50[2] No FP,No S <br /> 09/11/02 1610 45 44 -2934 <50 <0 50 <0 50 <0 50 <0 50 <0 50[2] No FP,No S <br /> 12/18/02 16.10 42.67 -26.57 <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No S <br /> MW-4 02/28/95 1457 5500 5427 -3970 <50 09 <05 <0 5 <0 5 NA No FP,No S <br /> 05/19/95 1457 5238 -3781 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> 08/28/95 1457 54 10 -3953 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> 12/07/95 1457 5269 -38 12 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> 02/05/96 1457 5012 -3555 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> 05/30/96 1457 4721 -32 64 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> 09/18/96 1457 5180 -3723 <50 <0 5 <05 <0 5 <0 5 <3 No FP,No S <br /> 11/26/96 1457 4884 -3427 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> 03/24/97 1457 4384 -2927 <50 <05 <05 <0 5 <0 5 <3 No FP,No S <br /> 05/20/97 1457 4434 -2977 <50 <0 5 <0 5 <05 <0 5 <3 No FP,No S <br /> 08/19/97 1457 47 89 -3332 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 11/19/97 1457 4601 -3144 <50 1 1 0 68 <0 5 054 <5 No FP,No S <br /> 03/04/98 1457 4164 -27 07 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 06/26/98 1457 39 16 -2459 <50 141 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 09/01/98 1457 4183 -2726 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 12/02/98 1457 3822 -2365 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 03/31/99 1457 3477 -2020 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 06/04/99 1457 3586 -2129 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 09/02/99 1457 4059 -2602 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 11/29/99 1457 3878 -2421 <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> 03/16/00 1457 34 75 -20 18 <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> 06/26/00 1457 3721 -2264 <50 <0 5 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> 09/28/00 1457 4158 -2701 <50 <0 5 <05 <0 5 <0 5 <2[2] No FP,No S <br /> i <br /> 12/19/00 1457 372 -2263 <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> Arco_213o_4QMR02 <br /> 4 of 12 <br />