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Ae 1 <br /> Groundwater Monitoring Data <br /> ARCO Service Station No 2130 Page 4 of 8 <br /> 7906 North EI Dorado Street, Stockton, California <br /> Well Elevation Static Water Groundwater Ethyl- Total <br /> Number Date ToR of Casin Top of Screen Level Elevation TPHG Benicnc Toluene benzene Xylene MTBE Observations <br /> MW-4 08/10/92 1457 5500 6434 -4977 NA NA NA NA NA NA No FP, No S <br /> MW-4 08/28/92 --- 5500 --- --- 1,200 310 270 23 140 NA No FP, No S <br /> MW-4 09/15/92 1457 5500 6445 -4988 NA NA NA NA NA NA No FP,No S <br /> MW-4 10/06/92 1457 5500 6460 -50 03 260 26 3 5 <0 5 22 NA No FP, No S <br /> MW-4 11/11/92 1457 5500 63 87 -4940 NA NA NA NA NA NA No FP, No S <br /> MW-4 12/04/92 1457 5500 63 12 -4855 NA NA NA NA NA NA No FP,No S <br /> MW-4 01/20/93 1457 5500 61 83 4726 820 160 6 9 <5* 71 NA No FP, No S <br /> MW-4 03/22/93 1457 5500 5995 -4538 NA NA NA NA NA NA No FP,No S <br /> MW-4 04/06/93 1457 5500 5944 -44 87 1,000 250 26 <2 5 120 NA No FP,No S <br /> MW-4 07/30/93 1457 5500 6023 -4566 880 220 50 4 5 68 NA No FP, No S <br /> MW-4 11/29/93 1457 5500 WELL INACCESSIBLE No FP,No S <br /> MW4 03/23/94 1457 5500 5429 -3972 580 97 17 4 3 29 NA No FP, No S <br /> MW4 06/22/94 1457 5500 5441 -3984 1,700 930 4 4 52 20 NA No FP, No S <br /> MW-4 09/28/94 1457 5500 5826 -4369 610 73 2 2 1 3 18 NA No FP, No S <br /> MW4 12/01/94 1457 5500 57 18 -4261 1,000 400 31 59 15 NA No FP,No S <br /> MW-4 02/28/95 1457 5500 5427 -3970 <50 0 9 <0 5 <0 5 <0 5 NA No FP, No S <br /> MW-4 05/19/95 1457 5500 5238 -3781 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-4 08/28/95 1457 5500 54 10 -3953 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-4 12/07/95 1457 5500 5269 -38 12 <50 <0 5 <0 5 <0 5 <0 5 NA No FP, No S <br /> MW-4 02/05/96 1457 5500 50 12 -3555 <50 <0 5 <0 5 <0 5 <0 5 NA No FP, No S <br /> MW-4 05/30/96 1457 5500 4721 -3264 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-4 09/18/96 1457 5500 5180 -37 23 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP, No S <br /> MW-4 11/26/96 1457 5500 48 84 -3427 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-4 03/24/97 1457 5500 4384 -2927 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-4 05/20/97 1457 5500 4434 -2977 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-4 08/19/97 1457 5500 4789 -33 32 <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-5 08/10/92 15 10 5800 6484 -4939 NA NA NA NA NA NA No FP, No S <br /> MW-5 08/28/92 --- 5800 --- --- 380 61 IS 2 7 48 NA No FP,No S <br /> MW-5 09/15/92 15 10 5800 64 95 -5003 NA NA NA NA NA NA No FP, No S <br /> MW-5 10/06/92 15 10 5800 65 10 -50 19 460 59 34 2 1 45 NA No FP, No S <br /> MW-5 11/11/92 15 10 5800 6440 -4950 NA NA NA NA NA NA No FP, No S <br /> N 1xls108051114081092997MI XLS <br /> EMCON <br /> 11/7197 <br />