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i • • <br /> Table 2 <br /> HISTORIC FLLUID 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 Xyienes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (Ag/1) (µg/1) (µg/1) (µg/1) (µg/l) {µg11) (µgll) <br /> MW-5 continued <br /> 01/28/91 -- -- -- - - -- -- -- -- -- -- -- Dry <br /> 04/02/91 -- -- -- -- <br /> Dry <br /> 07/18/91 -- - __ Dry <br /> 09/30/91 -- -- -- __ Dry <br /> 11/14/91 -- -- -- __ Dry <br /> 04/16/92 -- -- -- -- __ Dry <br /> 07/30/92 - -- -- -- -- -- -- -- -- -- -- - Dry <br /> 10/21/92 -- -- -- __ <br /> Dry <br /> 01/13/93 -- -- -- __ <br /> Dry <br /> 04/26/93 11 76 5082 -- -3906 -- 60000 -- 28000 ND<250 ND<250 ND<250 - -- <br /> 07/26/93 11 76 51 81 -- -4005 -099 43000 -- 19000 240 ND<125 ND<125 -- - <br /> 10/20/93 11 76 5235 - -4059 -054 21000 -- 15000 120 ND<50 68 - -- <br /> 01/17/94 11 76 4983 -- -38 07 252 23000 -- 13000 100 ND<50 75 - -- <br /> 04/25/94 11 76 4775 - -3599 -- 16000 -- 12000 92 31 70 -- -- <br /> 07/25/94 11 76 50 16 - -3840 -241 -- -- -- __ -- __ __ Not Sampled Due to <br /> Construction <br /> 10/26/94 11 76 5126 -- -39 50 -1 10 13000 -- 10000 790 ND<20 270 - -- <br /> 01/25/95 It 76 48 62 -- -36 86 264 5000 -- 3700 27 ND<0 5 44 -- -- <br /> 04/26/95 11 76 43 97 -- -3221 4 65 2900 -- 650 12 2 3 16 -- <br /> 07/26/95 11 76 45 03 -- -3327 -106 150 -- 21 2 4 ND<1 0 19 -- -- <br /> 10/25/95 1176 4992 - -38 16 -489 -- -- -- __ __ __ <br /> 01/24/96 11 76 43 11 -- -3135 681 86 -- 6 9 085 ND<0 5 0 84 -- <br /> 04/25/96 11 76 3831 -- -2655 -- -- -- __ -- __ -_ __ <br /> 07/24/96 11 76 3868 -- -2692 -037 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 69 69 <br /> seat Page 10 of 36 <br />