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i <br /> T <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 Continents <br /> Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) (µgll) (µg/1) (µg/1) <br /> MWA continued <br /> 07/25/94 11 63 4988 000 -3825 -245 850 -- 7 4 2 4 ND<0 5 6 1 -- -- <br /> 10/26/94 11 63 51 04 000 -3941 -1 16 650 -- 20 2 2 ND<I 0 4 6 -- -- <br /> 01/25/95 11 63 4829 000 -3666 2 75 240 -- 2 4 ND<0 5 ND<0 5 094 - - <br /> 04/26/95 11 63 43 83 000 -3220 446 250 -- 2 4 0 71 ND<0 5 1 5 -- - <br /> 07/26/95 11 63 4482 000 -33 19 -099 130 1 5 1 7 ND<0 5 2 1 -- -- <br /> 10/25/95 11 63 45 67 000 -3404 -085 <br /> 01/24/96 11 63 4282 000 -31 19 285 ND<50 -- 14 ND<0 5 ND<0 5 ND<0 5 -- - <br /> 04/25/96 1163 3824 000 -2661 <br /> 07/24/96 1163 38 55 000 -2692 -031 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 60 -- <br /> 10/23/96 It 63 4030 000 -2867 -175 -- -- -- -- -- -- -- .. Sampled Semi-annually <br /> 01/20/97 11 63 3679 000 -25 16 3 51 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 12 -- <br /> 07/16/97 I 1 63 34 18 000 -22 55 -- ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 25 <br /> 10/15/97 I 1 63 35 97 000 -2434 -179 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 3 <br /> 12/08/97 1163 35 74 000 -24 11 023 <br /> 03/05/98 11 63 31 71 000 -2008 4 03 3500 -- ND<5 0 6 1 5 9 220 38 34 <br /> 05/27/98 1163 2829 000 -1666 -- ND<50 -- 33 ND<0 50 ND<0 50 ND<0 50 27 32 <br /> 07/21/98 11 63 28 31 000 -1668 -002 ND<50 -- ND<0 50 1 8 ND<0 50 2 3 18 18 <br /> 10/14/98 1163 2926 000 -1763 -095 ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<0 50 14 10 <br /> 01/25/99 11 63 2847 000 -1684 079 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 9 5 10 <br /> 04/19/99 11 63 2606 000 -1443 241 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 6 2 48 <br /> 07/15/99 1163 27 36 000 -15 73 -130 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 3 2 4 6 <br /> 10/25/99 1 1 63 2900 000 -1737 -- ND<50 -- ND<0 50 0 71 ND<0 50 2 3 5 2 33 <br /> 01/27/00 1163 2851 000 -1688 049 ND<50 -- ND<0 50 066 ND<0 50 ND<0 50 ND<2 5 ND<2 0 <br /> 06/26/00 1163 25 74 000 -1411 277 ND<50 0 - >vn<o 500 1 8 ND<O 500 154 ND<5 0 ND<2 0 <br /> 6981 Page 8 of 36 <br />