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<br /> Groundwater Monitoring Data
<br /> ARCO Service Station No 2130
<br /> 7906 North EI Dorado Street, Stockton, California
<br /> Page 1 of 7
<br /> Well Elevation Static Water Groundwater Total
<br /> Number Date Top of Casing Top of Screen Level EIevation TPHG Benzene Toluene Eth (benzene Xylene MTBE Observations
<br /> MW-1 01/07/92 1458 6000 6148 -4690 18,000 1,600 610 140 850 NA No FP,No S
<br /> MW-1 02/24/92 1458 6076 4618 NA NA NA NA NA NA No FP,No S
<br /> MW-1 03/31/92 1458 6056 4533 NA NA NA NA NA NA No FP,No S
<br /> MW-1 04/21/92 1458 6091 -4633 5,200 1,400 360 53 260 NA No FP,No S
<br /> MW-1 05/11/92 1458 6157 4699 NA NA NA NA NA NA No FP,No S
<br /> MW-1 06/23/92 1458 6168 4710 NA NA NA NA NA NA No FP,No S
<br /> MW-1 07/08/92 1458 62 84 4826 6,500 1,900 320 89 230 NA No FP,No S
<br /> MW-1 08/10/92 1458 63 74 4916 NA NA NA NA NA NA No FP,No S
<br /> MW-1 09/15/92 1458 64 37 -4979 NA NA NA NA NA NA No FP,No S
<br /> MW-1 10/06/92 1458 6452 -4994 11,000 2,500 600 210 470 NA No FP,No S
<br /> MW-1 11/11/92 1458 6383 4925 NA NA NA NA NA NA No FP,No S
<br /> MW-1 12/04/92 1458 63 10 -4852 NA NA NA NA NA NA No FP,No S
<br /> MW-1 01/20/93 1458 6193 4725 1,800 260 100 10 34 NA No FP,No S
<br /> MW-1 03/22/93 1458 5995 4537 NA NA NA NA NA NA No FP,No S
<br /> MW-1 04/06/93 1458 5947 4489 1,500 250 64 30 76 NA No FP,No S
<br /> MW-1 07/30/93 1458 60 19 4561 2,100 390 130 38 79 NA No FP,No S
<br /> MW-1 11/29/93 1458 5929 4471 1,200 230 12 11 16 NA No FP,No S
<br /> MW-1 03/23/94 1458 5433 -3975 1,900 120 8 2 25 7 5 NA No FP,No S
<br /> MW-1 06/22/94 1458 54 11 -3988 910 13 4 0 41 19 NA No FP,No S
<br /> MW-1 09/28/94 1458 58 17 4359 420 68 14 2 9 <0 5 NA No FP,No S
<br /> MW-1 12/01/94 1458 57 11 4253 220 2 4 <0 5 <0 5 <0 5 NA No FP,No S
<br /> MW-1 02/28/95 1458 5421 -3963 340 2 1 <0 5 0 6 <0 5 NA No FP,No S
<br /> MW-1 05/19/95 1458 5241 -37 83 210 2 9 <0 5 0 7 <0 5 NA No FP,No S
<br /> MW-1 08/28/95 1458 54 04 -3946 240 3 2 <0 5 10 <0 5 NA No FP,No S
<br /> MW-1 12/07/95 1458 52 67 -38 09 190 17 <0 5 <0 5 <0 5 NA No FP,No S
<br /> MW-1 02/05/96 1458 5011 -3553 230 25 <0 5 0 5 <0 5 NA No FP,No S
<br /> MW-1 05/30/96 1458 47 17 -3259 180*** 12 <0 5 <0 5 <0 5 <4** No FP,No S
<br /> MW-1 09/18/96 1458 5096 -36 38 200 16 <0 5 <0 5 <0 5 <5** No FP,No S
<br /> MW-1 11/26/96 1458 4880 -34 22 220 15 <0 5 <0 5 <0 5 5 No FP,No S
<br /> MW-2 01/07/92 15 19 6000 47 11 -3192 8,000 82 <60 48 170 NA No FP,No S
<br /> MW-2 02/24/92 1519 6159 4640 NA NA NA NA NA NA No FP,No S
<br /> MW-2 03/31/92 15 19 6137 4618 NA NA NA NA NA NA No FP,No S
<br /> N\xls\0805V 1406\0 I 0997r I x1s Rev 2 2/13197
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