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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 1n feet MSL) (Reported 1n u A) <br /> Well ID Date Wellhead Depth to G W Benzene Toluene Ethyl Xylenes TPHg MTBE Fuel Dissoved <br /> Elev Water Elev Benzene (EPA 8020) Oxygenates Ox en <br /> MW4 10/29/91 8 95 1130 -235 110 79 640 1,700 19 000 — — — <br /> 03194192 9 03 9 34 -031 1.2 32 91 38 3 700 — — - <br /> 03/13/92 9 03 900 0 03 — — — -- — -- — <br /> 09101192 9 03 1216 -313 38 80 1 100 590 40 000 -- -- <br /> 12/03/92 9 03 1110 -207 2 6 110 490 1,100 15,000 — — - <br /> 03/24133 903 573 330 72 19 58 190 7,100 — — - <br /> 07/23/93 9 03 754 149 <0 50 <0 50 540 140 3,100 — — <br /> 12127/33 903 836 067 <0 50 76 700 840 15,000 -- - - <br /> 03/30194 903 738 165 — — — — — -- — <br /> OBR4134 903 8 59 044 <0 50 <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 9 03 975 -072 <0 50 13 330 270 7,000 -- — - <br /> 03/30185 9 03 436 467 47 23 80 13 2 100 — — - <br /> 06/30195 9 03 553 350 38 47 270 300 12 000 — — - <br /> 09/29/95 903 876 028 10 15 240 280 8,800 — — - <br /> 12/29/95 903 803 100 66 30 380 420 11,000 — -- <br /> • 03/29/96 903 377 526 18 16 220 110 8,600 Y - -- <br /> 06/28/36 9 03 630 273 34 42 140 100 8,200 <br /> 09/30/96 903 944 -041 24 28 470 540 10,000 — — <br /> 12/17/96 903 844 059 21 28 390 520 9,600 -- — <br /> 03/25/97 903 337 5 66 34 24 180 210 9,200 — — <br /> 06125/97 903 710 193 12 23 230 240 7,800 — -- <br /> 09/18197 903 1030 -127 38 32 10 550 9,900 — <MDLs <br /> 12/16/37 903 934 -031 28 10 420 510 6,200 — — <br /> 031201W 903 2 83 620 26 23 170 110 4 400 30 — - <br /> 06130/% 903 481 422 13 <10 230 150 4 600 — <MDL9 — <br /> 0929198 903 992 -089 so <50 42 41 1,600 - - <1 000 <br /> 1223/98 903 883 020 12 48 78 23 3,000 <10 - - <br /> 04/05/99 903 711 192 613 <50 508 175 2,650 <50 0 -- - <br /> 07109/99 903 8 64 0 39 <10 <10 <10 37 2,500 <50 0 -- - <br /> 10107199 903 1046 -143 11 1 113 575 646 2,700 - - -- <br /> 1228A39 903 960 -057 00 0 <10 0 847 102 4,920 - - <br /> 0321100 903 703 200 <0 500 2 57 202 943 2200 <2 50 - - <br /> 07113190 903 862 041 <0 500 0 661 192 393 704 - - - <br /> 0927100 903 1001 -098 <10 74 84 51 6,000 - <MDLs - <br /> 1220100 903 9 83 -080 94 82 77 41 7 600 <5 0 - <br /> • 0329/01 903 885 018 10 84 65 23 3 400 <2 0" - - <br /> w 182582WABLE%TA"ow 152020011 <br />