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TABLE 1 SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS Gardner Property,Thornton,CA Page 2 of 7 . measured in feet MSL Re orted m u /I WeA Ip Date Wellhead Depth to G W Benzene Toluene Ethyl Xylenes TPHg MTBE Fuel Dissoved Elev Water Elev Benzene EPA 8020 Oxygenates Ox en MW2 11/06/90 981 1234 -253 44 <0 5 <05 <0 5 <50 02!19!91 981 1107 -126 17 <0 5 <0 5 12 70 10/11/91 981 1229 -248 <0 5 <0 5 <0 5 <05 <50 10/29/91 1359 11 96 -237 -- - 03/04/92 959 997 038 19 1 0 <0 5 10 310 03/13/92 959 962 -003 - _ 09/01/92 959 1275 -3 16 50 <0 5 <0 5 06 110 12/03/92 959 11 72 2 13 38 28 08 44 830 03/24/93 959 634 325 120 72 22 94 1 700 07/23/93 959 810 149 21 t 2 <0 50 39 270 12/27/93 959 896 063 59 1 2 <0 50 36 210 03/30/94 959 797 162 _ 06/24/94 959 922 037 <0 50 069 <0 50 21 140 09/16/94 959 11 51 -192 65 079 <0 50 1 7 160 12/21/94 959 1034 -076 <0 50 <0 50 <0 50 077 50 03/30/95 959 497 462 <0 50 <0 50 <0 50 <0 50 <50 06/30/95 959 614 345 <0 50 <0 50 <0 50 80 <50 09/29/95 959 932 027 <0 50 <0 50 <0 50 <0 50 <50 12!29195 959 1164 0 95 <0 50 <0 50 <0 50 1 9 <50 03/29/96 959 434 525 <0 5 <05 <0 5 <05 <50 06128!96 959 690 269 <0 5 <0 5 <0 5 <0 5 <50 09/30/96 959 1011 -052 <0 50 <0 50 <0 50 <0 50 <50 - 12/17/96 959 905 054 <0 50 <0 50 <0 50 <0 50 <50 03/25/97 959 392 567 <0 50 <0 50 <0 50 <0 50 <50 06/25/97 959 778 181 <05 <0 5 <0 5 <0 5 <50 09/18/97 959 1093 -134 <05 <0 5 <0 5 <0 5 <50 <MDLs 12/16/97 959 996 -037 <0 5 <0 5 <0 5 <2 450 03/02/98 959 336 623 <0 5 <0 5 <0 5 <2 <50 <5 06/30/98 959 540 419 <0 50 <0 50 <0 50 <0 50 <50 09/29/98 959 1045 -086 <0 50 <0 50 <0 50 <0 50 <50 <1 000 12/23/98 959 942 017 <0 50 <0 50 <0 50 <0 50 <50 <2 5 04/05/99 959 765 1 94 <0 50 <0 50 <0 50 <0 50 <50 <5 0 07/09/99 959 925 034 <0 50 <0 50 <0 50 <0 50 <50 <2 5 - 10/07/99 959 11 05 -146 <0 500 <0 500 <0 500 <0 500 <50 0 - 12/28/99 959 1024 -065 <0 500 <0 500 <0 500 <0 500 <50 0 03/21/00 959 759 200 <0 500 <0 500 <0 500 <0 500 <50 0 <2 50 07/13100 959 923 036 <0 500 <0 500 <0 500 <0 500 <50 09/27/00 959 1062 -1 03 <0 5 <0 5 <0 5 <0 5 <50 <MDLs 12/20/00 959 1045 -086 03/29/01 959 945 014 <0 5 <0 5 <0 5 <0 5 <50 <5 0 - . 06/18/01 959 1065 -106 <0 5 <0 5 <0 5 <0 5 <50 <5 0 09/24/01 959 11 76 -217 <0 5 <0 5 <0 5 <0 5 <50 <50 01/15/02 959 1039 -080 <0 5 <0 5 <0 5 <1 0 <50 <50 04/03/02 1 959 1 9 71 1 -012 1 <0 5 1 <0 5 1 <05 <1 0 1 <50 1 <5 0 W\62582\TA8LES\TA0LEGW rlg[8/21/2002]