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i <br /> TA* 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 feet b s feet b s feet msl A /L /L IL L L g/L Observations <br /> MW-10 02/28/95 1438 5300 5424 -3986 300 0 9 <0 5 <0 5 <0 5 NA No FP,No S <br /> 05/19/95 1438 5232 -3794 370 0 9 <0 5 <0 5 <0 5 NA No FP,No S <br /> 08/28/95 1438 5370 -3932 420 1 2 <0 5 <0 5 <0 5 NA No FP,No S <br /> 12/07/95 1438 5261 -3823 490 0 7 <0 5 <0 5 <0 5 NA No FP,No S <br /> 02/05/96 1438 5013 -35 75 350 0 7 <0 5 <0 5 <0 5 NA No FP,No S <br /> 05/30/96 1438 4709 -3271 350*** <6** <0 5 <0 5 <0 5 <6** No FP,No S <br /> 09/I8/96 1438 5084 -3646 510 <15** 10 <0 5 <0 5 <9** No FP,No S <br /> 11/26/96 1438 4872 -3434 <600*** <0 5 <0 5 <0 5 <0 5 <10** No FP,No S <br /> 03/24/97 1438 4377 -2939 <500*** <5** <0 8** <0 5 <0 5 <7** No FP,No S <br /> 05/20/97 1438 4420 -2982 460 <5** <0 5 <0 5 <0 5 <7** No FP,No S <br /> 08/19/97 1438 4766 -3328 440 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 11/19/97 1438 45 95 -31 57 510 2 2 2 2 093 3 1 <5 No FP,No S <br /> 03/04/98 1438 4143 -2705 110 066 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 06/26/98 1438 39 11 -2473 329 4 75 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 09/01/98 1438 4078 -2640 295 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 12/02/98 1438 38 23 -2385 407 6 89 <0 5 <0 5 0 873 195 No FP,No S <br /> 03/31/99 1438 3471 -2033 217 641 0 948 0 763 2 69 748 No FP,No S <br /> 06/04/99 1438 35 86 -2148 288 <0 5 <0 5 <0 5 <0 5 653 No FP,No S <br /> 09/02/99 1438 4026 -2588 152 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 11/29/99 1438 3858 -2420 198 358 <0 5 <0 5 061 9 08 No FP,No S <br /> 03/16/00 1438 3469 -2031 270 074 <0 5 <0 5 <0 5 5 95 No FP,No S <br /> 06/26/00 1438 3705 -2267 389 <0 5 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> 09/28/00 1438 4128 -2690 <50 0 870 <0 5 <0 5 <0 5 <2[2] No FP,No S <br /> 12/19/00 1438 3720 -22 82 <50 <0 5 <0 5 1 <0 5 <0 5 <2 5 No FP,No S <br /> 03/15/01 NM NM NE Well Covered Not observed <br /> C 1A RC0121301QTRLY1200012130 Quarterly Data XLS Delta <br /> 9 of 12 5/4/01 <br />