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TABLE 1 <br /> SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS <br /> Gardner Property,Thornton,CA <br /> Page 4 of 7 <br /> • measured in feet MSL Re orted In u ll <br /> Well ID Date Wellhead Depth to G W Benzene Toluene Ethyl Xylenes TPHg MTBE Fuel Dlssor=_d <br /> Elev Water Elev Benzene EPA 8020 Oxygenates Ox --en <br /> MW4 10/29/91 895 1130 235 110 79 640 1 700 19 000 — <br /> 03/04192 903 934 031 12 32 91 38 3 700 — <br /> 03/13/92 903 900 003 — -- - — -- -- <br /> 09/01/92 903 1216 313 38 80 1 100 590 40 000 -- - <br /> 12/03/92 903 1110 207 2 6 110 490 1 100 15 000 -- - <br /> 03/24/93 903 573 330 72 19 56 190 7 100 -- — <br /> 07/23/93 903 754 149 <0 50 <0 50 540 140 3 100 -- <br /> 12127/93 903 838 067 <0 50 76 700 840 15 000 - <br /> 03130/94 903 738 165 — -- — - — -- — <br /> 06124/94 903 859 044 <050 <0 50 780 1,200 16 000 - — <br /> 09/16/94 903 1092 -189 <0 50 <0 50 240 200 2,800 -- — <br /> 12/21/94 903 975 -072 <0 50 13 330 270 7 000 - _ — <br /> 03/30195 903 436 467 47 23 80 13 2 100 - — <br /> 06/30195 903 553 35D 38 47 270 300 12 000 - <br /> 09/29/95 903 875 028 10 15 240 280 8 800 — <br /> 12/29195 903 803 1 00 66 30 380 420 11 000 — <br /> 03/29/96 903 377 526 18 16 220 110 8 600 — <br /> 06/28196 903 630 273 34 42 140 100 8200 - -- <br /> 09/30196 903 944 -041 24 28 470 540 10 000 — <br /> 12/17/96 903 844 059 21 28 390 520 9 600 - <br /> 03/25197 903 337 566 34 24 180 210 9200 <br /> 06/25197 903 710 193 12 23 230 240 7 800 — <br /> 09/18197 903 1030 -127 38 32 10 550 9 900 <MDLs <br /> 12/16197 903 934 031 28 10 420 510 6200 -- — <br /> 03/20198 903 283 620 26 23 170 110 4 400 30 -- <br /> 06/30198 903 481 422 13 <10 230 150 4 600 — <MDLs — <br /> 09/29198 903 992 -089 59 <50 42 41 1 600 - <1 000 <br /> 12/23198 903 883 020 12 4 8 78 23 3 000 <10 — <br /> 04/05199 903 711 192 6 13 <50 508 175 2 550 <50 0 <br /> 07/09/99 903 864 039 <10 <10 <10 37 2 500 <50 0 — <br /> 10/07/99 903 1046 -143 11 1 11 3 575 646 2 700 -- - — <br /> 12/2B/99 903 960 -057 <10 0 <10 0 84 7 102 4 920 - - — <br /> 03/21100 903 703 200 <0 500 2 57 202 943 2200 <2 50 -- - <br /> 07/13/00 903 862 041 <0 500 0 661 192 393 704 -- — — <br /> 09/27/00 903 1001 -098 <1 0 74 84 51 6,000 <MDLs - <br /> 12120/00 9 03 983 -080 94 8 2 77 41 7 600 <5 0 -- — <br /> 03/29/01 903 885 018 10 84 65 23 3 400 <2 0" — <br /> 06/18/01 903 1002 -099 12 94 170 52 7 500 34 -- — <br /> 09/24/01 903 11 14 -211 69 14 140 140 5 400 <10 — — <br /> 01/15/02 903 978 -075 18 15 71 180 5 600 <2 0" <MDLs — <br /> 04/03/02 903 911 -008 1 65 1 67 1 93 1 49 1 5 700 1 <2 0" 1 <MDLs — <br /> W'5¢S82"A8LES%TA8LEGW Als[&2]l2WXl <br />