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TABLE I SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS Gardner Property,Thornton,CA Page 2 of 7 measured in feet MSL (Reported in u /I Well iD Date Wellhead Depth to G W Benzene Toluene Ethyl Xylenes TPHg MTBE Fuel Dlssoved Elev Water Eley BenzeneEPA 8020) 0x enates Ox en MW2 11/06190 981 12 34 -253 44 <0 5 <0 5 <0 5 <50 02/19191 981 11 07 -126 17 <0 5 <0 5 12 70 -- 10111/91 981 1229 -248 <0 5 <0 5 <05 <0 5 <50 — — 10129/91 959 1196 -237 — -- -- — — — 03/04192 959 997 -038 19 10 <0 5 10 310 — 03113192 959 962 -003 — -- — — — 09101192 959 1275 -316 so <0 5 <0 5 06 110 - 12/03/92 959 11 72 -213 38 28 08 44 830 — -- 03124/93 959 6 34 325 120 72 22 94 1 700 - - 07/23/93 959 810 1 49 21 1 2 <0 50 39 270 — - 12127/93 959 ass 063 59 1 2 <0 50 36 210 - -- 03/30194 959 7 97 162 — -- — — - - - 06124/94 959 922 037 <0 50 069 <0 50 21 140 - - 09/16/94 959 11 51 -1 92 6 5 079 <0 50 17 160 - — 12121/94 959 10 34 -075 <0 50 <0 50 <0 50 077 50 - - 03/30195 959 4 97 462 <0 50 <0 50 <0 50 <0 50 <50 -- - 06/30/95 959 614 345 <0 50 <0 50 <0 50 80 <50 — G9129195 959 932 027 <0 50 <0 50 <0 50 <0 50 <50 — - • 12/29/95 959 864 095 <0 50 <0 50 <0 50 19 <50 03/29196 959 434 525 <0 5 <05 <0 5 <05 <50 06/28/96 959 690 269 <0 5 <05 <0 5 <0 5 <50 - 09/30/96 959 loll -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 <050 <0 50 <0 50 <50 -- - 06/25/97 959 778 1 81 <0 5 <05 <0 5 <05 <50 - 09l18197 959 1093 -134 <0 5 <05 <05 <05 <50 - <MDLs 12116/97 959 996 -037 <0 5 <05 <0 5 <2 <50 -- 03102J98 959 336 623 <05 <0 5 <0 5 <2 <50 <5 06130/98 959 540 419 <0 50 <0 50 <0 50 <0 50 <50 — — -- 09/29/98 959 1045 -066 <0 50 <0 50 <0 50 <0 50 <50 — - <1 000 12!23198 959 942 017 <0 50 <0 50 <0 50 <0 50 <50 <2 5 -- - 04105/99 959 765 1 94 <0 50 <0 50 <0 50 <0 50 <50 <50 -- 07109/99 959 925 034 <0 50 <0 50 <0 50 <0 50 <50 <2 5 — 10107/99 959 11 OS -146 <0 500 <0 500 <0 500 <0 500 <50 0 -- 12128/99 959 1024 -065 <0 500 <0 500 <0 500 <0 500 <50 0 -- 03l21l00 959 759 200 <0 500 <0 500 <0 500 <0 500 <50 0 <250 — 07113/00 959 923 036 <0 500 <0 500 <0 500 <0 500 <50 — — 09/27/00 959 1062 -103 <0 5 <0 5 <0 5 <0 5 <50 — <MDLs 12120/00 959 1045 -086 — -- -- — — -- — 03/29/01 959 945 014 <0 5 <05 <05 <0 5 <50 <5 0 _ 06/18/01 959 1065 -106 <0 5 <05 <0 5 <0 5 <50 <50 _ 09124/01 959 1176 -217 <0 5 <0 5 <05 <0 5 <50 <50 -- 01/15/02 959 1039 -0 80 <0 5 <0 5 <0 5 <1 0 <50 <50 — — 04/03/02 959 971 -0 12 1 <0 5 1 <0 5 1 <05 1 <1 0 <50 I <5 0 - W\62532�TABLEWABLEn,R xis[8/21/20071