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T.* 1 ' <br /> Groundwater Monitoring Data <br /> ARCO Service Station No. 2130 - <br /> 7906 North EI Dorado Street, Stockton, California <br /> Page 4 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-4 06/22/94 1457 5441 -3984 1,700 930 44 52 20 NA No FP,No S <br /> MW-4 09/28/94 1457 5826 4369 610 73 22 13 18 NA No FP,No S <br /> MW-4 12/01/94 1457 57 18 4261 1,000 400 31 59 15 NA No FP,No S <br /> MW-4 02/28/95 1457 5427 -3970 <50 09 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-4 05/19/95 1457 5238 -3781 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-4 08/28/95 1457 54 10 -3953 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-4 12/07/95 1457 5269 -38 12 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-4 02/05/96 1457 50 12 -35 55 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-4 05/30/96 1457 4721 -3264 <50 <0 5 <0 5 <0 5 <0 5 <`i No FP No S <br /> V-4 0g/18/)o 14 51 51 lilt 1/ 21 X511 .11 5 _0 5 'Il 1 "0 5 1 No 1-1), No <br /> MW-5 08/10/92 IS 10 5800 6484 -4939 NA NA NA NA NA NA No FP,No S <br /> MW-5 08/28/92 --- --- --- 380 61 18 27 48 NA No FP,No S <br /> MW-5 09/15/92 15 10 6495 -5003 NA NA NA NA NA NA No FP,No S <br /> MW-5 10/06/92 15 10 65 10 -50 19 460 59 34 2 1 45 NA No FP,No S <br /> MW-5 11/11/92 15 10 6440 -4950 NA NA NA NA NA NA No FP,No S <br /> MW-5 12/04/92 15 10 6367 -4877 NA NA NA NA NA NA No FP,No S <br /> MW-5 01/20/93 15 10 6239 -4750 79 92 13 <0 5 42 NA No FP,No S <br /> MW-5 03/22/93 15 10 6051 -4560 NA NA NA NA NA NA No FP,No S <br /> MW-5 04/06/93 15 10 6001 -4508 1,600 260 150 12 230 NA No FP,No S <br /> MW-5 07/30/93 15 10 60 75 -45 79 790 160 88 19 71 NA No FP,No S <br /> MW-5 11/29/93 15 10 5977 -4486 9,600 1900 870 140 1300 NA No FP,No S <br /> MW-5 03/23/94 WELL INACCESSIBLE No FP,No S <br /> MW-5 06/22/94 WELL INACCESSIBLE No FP, No S <br /> MW-5 09/28/94 WELL INACCESSIBLE No FP,No S <br /> MW-5 10/11/94 15 10 5877 -4367 89 21 22 18 5 1 NA No FP,No S <br /> MW-5 12/01/94 15 10 5770 -4260 870 280 23 41 87 NA No FP,No S <br /> MW-5 02/28/95 1510 5478 -3968 310 70 14 59 50 NA No FP,No S <br /> LMW-5 <br /> 5/19/95 15 10 5285 -3775 66 84 <0 5 05 <0 5 NA No FP,No S <br /> 8/28/95 1510 5461 -3951 130 27 <0 5 45 06 NA No FP,No S <br /> 2/07/95 1510 5320 -38 10 <200** 21 <0 5 07 <0 5 NA No FP,No S <br /> 2/05/96 15 10 5067 -3557 <200** 30 <0 5 09 <0 5 NA No FP,No S <br /> 5/30/96 15 10 4770 -3260 140*** 15 <0 5 52 <0 5 <4** No FP,No S <br /> N\x1s\0805\1 1406UO0996MI xis Rev 2 10125/96 <br />