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I TABLE 1 . SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS Gardner Property, Thornton, CA Page 2of7 (measured in feet MSL) (Reported in ug/I) Well ID Date Wellhead Depth to G W Benzene Toluene Ethyl Xylenes TPHg Elev Water Elev Benzene MW2 11/06/90 981 1234 -2 53 44 <0 5 <0 5 <0 5 <50 02/19/91 981 1107 -126 17 <0 5 <0 5 1 2 70 10/11/91 981 1229 -248 <0 5 <0 5 <0 5 <0 5 <50 10/29/91 959 11 96 -237 -- -- -- -- -- 03/04/92 9 59 997 -038 19 1 0 <0 5 1 0 310 03/13/92 959 962 -003 -- -- -- -- -- 09/01/92 9 59 1275 -3 16 5 0 <0 5 <0 5 0 6 110 12/03/92 9 59 11 72 -213 38 2 8 0 8 4 4 830 03/24/93 959 634 325 120 7 2 2 2 9 4 1,700 07/23/93 959 8 10 1 49 21 1 2 <0 50 3 9 270 12/27/93 9 59 8 96 063 5 9 1-2 <0 50 36 210 03/30/94 959 797 1 62 06/24/94 959 922 037 <0 50 069 <0 50 21 140 09/16/94 959 11 51 -1 92 6 5 079 <0 50 1 7 160 12/21/94 959 1034 -075 <0 50 <0 50 <0 50 077 50 03/30/95 959 4 97 4 62 <0 50 <0 50 <0 50 <0 50 <50 06/30/95 959 6 14 345 <0 50 <0 50 <0 50 8 0 <50 09/29/95 959 932 027 <0 50 <0 50 <0 50 <0 50 <50 12/29/95 959 864 095 <0 50 <0 50 <0 50 1 9 <50 03/29/96 959 4 34 525 <0 5 <0 5 <0 5 <0 5 <50 06/28/96 959 690 269 <0 5 <0 5 <0 5 <0 5 <50 09/30/96 959 1011 -0 52 <0 50 <0 50 <0 50 <0 50 <50 12/17/96 9 59 905 054 <0 50 <0 50 <0 50 <0 50 <50 03/25/97 9 59 392 567 <0 50 <0 50 <0 50 <0 50 <50 06/25/97 959 778 1 81 <0 5 <0 5 <0 5 <0 5 <50 09/18/97 959 1093 -1 34 <0 5 <0 5 <0 5 <0 5 <50 12/16/97 9 59 9 96 -037 <0 5 <0 5 <0 5 <2 <50 W\94326%TABLESITA8LEGW XLS 11112198)