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• • <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through March 2005 <br /> Former 76 Station 6981 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments <br /> Sampled Elevation Water "Thickness water in 8260B benzene Xylenes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/l) (µg/l) (11g/1) W/1) (µg11) (µg/1) (µg/1) <br /> MW-15 continued <br /> 09/12/01 1137 31 38 000 -2001 -201 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 22 28 <br /> 12/12/01 1137 31 54 000 -2017 -016 ND<50 - ND<O 50 ND<O 50 ND<O 50 ND<O 50 43 48 <br /> 03/20/02 1137 3027 000 -1890 1 27 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 62 65 <br /> 06/06/02 1137 3074 000 -1937 -047 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 53 <br /> 09/30/02 1 l 37 3345 000 -2208 -271 -- 55 ND<O 50 ND<O 50 ND<O 50 ND<l 0 - 64 <br /> 12/30/02 11 37 3260 000 -21 23 085 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 91 <br /> 03/29/03 11 37 31 83 000 -2046 077 -- 78 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 98 <br /> 06/25/03 1137 3220 000 -20 83 -037 -- 120 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- 91 <br /> 09/24/03 1137 3464 000 -2327 -244 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- 67 <br /> 12130103 1137 3402 000 -2265 062 - 100 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 63 <br /> 03/09/04 11 37 33 10 000 -2173 092 -- 57 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 57 <br /> 06/16/04 11 37 33 80 000 -2243 -070 -- 71 ND<O 50 ND<O 50 ND<O 50 ND<I 0 -- 38 <br /> 09/20/04 11 37 -- _ __ __ __ Dry well <br /> 12/30/04 1137 36 15 0 00 -2478 -- ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 30 <br /> 03/24/05 1 l 37 34 75 000 -2338 140 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 0 82 <br /> MW-16 (Screen Interval in feet 1S 0-38 0) <br /> 08/21/99 11 79 2845 000 -1666 -- 1900 -- 27 ND<10 26 150 120 69 <br /> 10/25/99 11 79 2939 000 -1760 -094 3100 - 55 ND<10 77 360 170 ]Go <br /> 01/27/00 11 79 2895 000 -17 16 0 44 4600 -- 78 5 7 170 390 130 130 <br /> 06/26/00 11 79 26 13 000 -1434 282 1650 - 189 257 43 6 105 667 73 7 <br /> 09/22/00 1220 2904 000 -1684 -250 1800 - 16 ND<10 31 72 85 68 <br /> 12/26/00 1220 28 98 000 -1678 0 06 3720 -- 275 ND<10 0 627 178 176 111 <br /> 03/07/01 1220 2868 000 -1648 030 3690 -- 31 1 ND<10 0 547 200 ND<100 133 <br /> 06/26/01 1220 2969 000 -1749 -101 4300 -- 38 ND<5 0 61 170 700 150 <br /> 6987 Page 27 of 36 <br />