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i i • <br /> 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 msl) m/L µg/L µg/L _ ._.�tgL ug/L gg/L, Observations <br /> MW-1 12/18/02 1458 4115 .2657 <50 <0 50 <0 50 <0 50 <0 50 <0 5012] No FP,No S <br /> (cont) <br /> MW-2 02/28/95 15 19 6000 5508 -39 89 110 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> 05/19/95 15 19 53 15 -3796 400 23 <0 5 21 <0 5 NA No FP,No S <br /> 08/28/95 15 19 54 83 -3964 650 84 <1* 9 3 1 1 NA No FP,No S <br /> 12/07/95 15 19 5347 -3828 540 18 <1* 3 <1* NA No FP,No S <br /> 02/05/96 I5 19 5193 -3674 310 28 0 6 13 0 8 NA No FP,No S <br /> 05/30/96 15 19 4791 -3272 510 31 10 5 9 13 <7** No FP,No S <br /> 09/18/96 15 19 5180 -36 61 920 150 <2 5* 22 3 5 <15* No FP,No S <br /> 11/26/96 15 19 4960 -3441 520 21 <0 5 2 7 06 7 No FP,No S <br /> 03/24/97 15 19 4450 -2931 <500*** <3** <3** <3** <3** <20** No FP,No S <br /> 05/20/97 15 19 45 09 -2990 720 71 <1* 13 1 1 <6* No FP,No S <br /> 08/19/97 1519 4869 -3350 1,200 240 <5 41 <5 <50** No FP,No S <br /> 11/19/97 15 19 4677 -3158 <50 17 0 89 <0 5 0 87 <5 No FP,No S <br /> 03/04/98 15 19 4218 -2699 <50 2 2 <0 5 <0 5 <0 5 5 1 No FP,No S <br /> 06/26/98 15 19 3987 -2468 534 3 65 <0 5 <0 5 1 12 652 No FP,No S <br /> 09/01/98 15 19 4161 -2642 322 484 <0 5 169 167 <5 No FP,No S <br /> 12/02/98 15 19 3894 -2375 390 <0 5 <05 0 735 <0 5 15 8 No FP,No S <br /> 03/31/99 15 19 3538 -20 19 987 6 6 069 0 579 233 655 No FP,No S <br /> 06/04/99 15 19 3667 -2148 184 119 <0 5 103 0 669 12 6 No FP,No S <br /> 09/02/99 15 19 4123 -26 04 4,820 764 <10 375 <10 191 No FP,No S <br /> 11/29/99 15 19 39 36 -24 17 79 1 4 25 <0 5 <0 5 1 14 6 54 No FP,No S <br /> 03/16/00 1519 3539 -2020 <50 <0 5 <0 5 <0 5 <0 5 289 No FP,No S <br /> 06/26/00 15 19 3799 -2280 435 33 0 588 122 206 6 3[2] No FP,No S <br /> 09/28/00 15 19 4224 -27 05 165[3] 658 <0 5 0 618 0 669 362121 No FP,No S <br /> 12/19/00 15 19 3792 -2273 <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S <br /> 03/15/01 15 19 3573 -2054 <50 <2 [4] <2 [4] <2[4] <2 [4] <2[2] No FP,No S <br /> 06/20/01 15 19 38 99 -2380 <50 <2 [4] <2 [41 <2[4] <2[41 <2[2] No FP,No S <br /> 09/12/01 15 19 4329 -28 10 <50 <2 [4] <2 [4] <2[41 <2 [41 <2[2] No FP,No S <br /> 12/12/01 15 19 4020 -25 01 <50 <1 0[41 <10[41 <10[4] <1 0[41 1 2[2] No FP,No S <br /> Arco_2I (_4QMR02 <br /> 2 of 12 <br />