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TABLE 1 <br /> SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS <br /> Gardner Property, Thornton, CA <br /> • Page 3 of 7 <br /> (measured in feet MSL) (Reported In ug/1) <br /> Well ID Date Wellhead Depth to G W Benzene Toluene Ethyl Xylenes TPHg MTBE Fuel D[ssoved <br /> Elev Water Elev Benzene (EPA 8020) Oxygenatesl Oxygen <br /> MW3 19/06/90 10 09 1258 -249 18 11 63 98 4,500 -- -- <br /> 02/19/91 1009 1131 -122 270 15 60 110 4,400 -- -- — <br /> 10/11/91 1009 1253 -244 14 21 30 83 7,400 — -- <br /> 10/29/91 987 1219 -232 -- -- -- — — - <br /> 03/04/92 987 1020 -033 31 17 fib 52 17,000 -- -- <br /> 03/13/92 987 986 001 — — -- -- -- _ — — <br /> 09/01/92 987 1302 -315 27 11 39 10 4,100 -- -- '_ <br /> 12/03/92 987 1196 -209 130 14 26 45 6,000 — — <br /> 03/24/93 987 658 329 230 25 45 68 13,000 -- -- -- <br /> 07/23/93 987 838 149 69 <0 50 29 17 2,000 — — -- <br /> 12/27/93 987 921 066 31 29 330 460 9,300 -- -- — <br /> 03/30/94 987 821 166 -- — -- -- — -- <br /> 06/24/94 987 944 043 <0 50 <0 50 290 190 8,400 -- -- — <br /> 09/16/94 987 11 77 -190 <0 50 11 370 230 8,300 — -- -- <br /> 12/21/94 987 1060 -073 12 <0 50 14 17 3,400 -- -- -- <br /> 03/30/95 987 519 468 83 60 880 400 5,800 -- -- <br /> 06/30/95 987 635 352 81 1 9 <0 50 15 610 -- -- -- <br /> 09/29/95 987 952 035 22 14 22 19 1,900 -- -- -- <br /> 12/29/95 987 883 104 36 <0 50 <0 50 29 480 -- -- <br /> 03/29/96 987 455 532 15 27 21 55 940 -- -- -- <br /> 06/28/96 987 709 278 <0 5 <0 5 <0 5 <0 5 <50 -- — -_ <br /> 09/30/96 987 1028 -041 10 <0 5 <0 5 <0 5 190 -- -- '- <br /> 12/17/96 987 924 063 48 06 <0 5 1 7 300 -- -- -- <br /> 03/25/97 987 413 574 52 <0 5 <0 5 1 9 140 -- -- '_ <br /> 06/25/97 987 794 193 <0 5 <0 5 <0 5 20 670 -- -- "" <br /> 09/18/97 987 11 10 -1 23 20 <0 5 <0 5 <05 220 -- <MDLs — <br /> 12/16/97 987 1014 -027 07 <0 5 <0 5 <0 5 160 -- -- "" <br /> 03/20/98 987 358 629 <0 5 <0 5 <0 5 <0 5 150 -- -- <br /> 06/30/98 987 560 427 1 2 <0 50 <0 50 063 85 -- <br /> 09/29/98 987 1069 -082 1 1 067 <0 50 21 170 -- — <1,000 <br /> 12/23/98 987 962 025 1 0 056 <0 50 086 140 <2 5 -- -- <br /> 04/05/99 987 788 1 99 <0 5 <0 5 <0 5 <0 5 110 <5 0 -- — <br /> 07/09/99 987 944 043 <0 5 <0 5 <0 5 <05 <50 <2 5 -- '- <br /> 10/07/99 987 1125 -138 <0 500 <0 500 <0 500 <0 500 <50 0 -- -- -- <br /> 12/28/99 987 1042 1 -055 <0 500 <0 500 <0 500 <0 500 <50 0 -- — — <br /> W IB25B21TABLEMTabl"[0111=0001 <br />