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TABLE 7 <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 /1) <br /> Well ID Date Wellhead Depth to G W Benzene Toluene Ethyl Xylenes TPHg MTBE Fuel Dissoved <br /> Elev Water Elev Benzene (EPA 8020) 0xvasnates Oxygen <br /> MW4 10/29/91 895 1130 -235 110 79 640 1,700 19,000 — — — <br /> 03/04/92 903 934 -031 1 2 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 26 110 490 1,100 15,000 -- — -- <br /> 0384193 903 573 330 72 19 56 190 7,100 — — -- <br /> 07/23/93 903 7 54 149 <0 50 <0 50 540 140 3,100 — — -- <br /> 12127/93 903 836 067 <0 50 76 700 840 15,000 — — -- <br /> 03/30/94 903 738 165 — — — — — — - <br /> 06/24/94 903 8 59 044 <0 50 c0 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 9 75 -072 <0 50 13 330 270 7,000 — — <br /> 03/30/95 903 436 467 47 23 80 13 2,100 — — - <br /> 06/30/95 903 553 350 38 47 270 300 12,000 — -- -- <br /> 09/29/95 903 875 028 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 — -- -- <br /> 0628/96 903 6 30 273 34 4 2 140 100 8,200 — — - <br /> 09/30/96 903 9 44 -041 24 28 470 540 10,000 — — -- <br /> 12/17/96 903 844 059 21 28 390 520 9,600 — — -- <br /> 03/25/97 903 337 566 34 24 180 210 9,200 — — — <br /> 06/25/97 903 710 193 12 23 230 240 7,800 — — <br /> 09/18/97 903 1030 -127 38 32 10 550 9,900 — <MDLs - <br /> 12/16/97 903 934 -031 28 10 420 510 6,200 — — - <br /> 03/20/98 903 2 83 620 26 23 170 110 4,400 30 — <br /> 06l30/98 903 481 422 13 <10 230 150 4,600 — <M DLs — <br /> 09/29/98 1 9 03 1 9 92 1 -0 89 5 9 <5 0 42 41 1,600 — -- <1,000 <br /> w W��6tiABLFb1iA9lFOW xisnxntAs� <br />