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i <br /> TABLE 5 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> November 1990 Through January 2007 <br /> Former Bulk Plant 0788 <br /> Date TGC Depth to LPH Ground- Change TPH-D TPH-G TPH-G Benzene Toluene Ethyl- Total MTBE Comments <br /> Sampled Elevation Water Thickness water in (8015M) (GC/MS) benzene Xylenes (8260B) <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (µg/1) (Ag/1) (µg/1) (µg/1) (14/1) (µg/1) •, <br /> U4 continued <br /> 08/08/94 45.19 7.88 0.00 37.31 0.06 55 -- ND ND ND ND ND - <br /> 11/08l94 45.19 9.16 0.00 36.03 -1.28 ND -- ND ND ND ND ND - <br /> 02/13/95 45.19 8.59 0.00 36.60 0.57 ND - ND ND ND ND ND -- <br /> 10/10/95 45.19 9.01 0.00 36.18 -0.42 - -- - -- -- - - -- Sampled annually <br /> 02/13/96 45.19 8.28 0.00 36.91 0.73 ND -- ND ND ND ND ND -- <br /> 11/06/96 45.19 7.57 0.00 37.62 0.71 <br /> 05/06/97 45.19 6.49 0.00 38.70 1.08 ND -- ND ND ND ND ND -- <br /> 04/29/98 45.19 8.18 0.00 37.01 -1.69 100 -- ND 1.2 ND ND ND ND <br /> 12/01/98 45.19 8.67 0.00 36.52 -0.49 -- -- - -- - -- - -- _ <br /> 05/24/99 45.19 8.10 0.00 37.09 0-57 ND -- ND ND ND ND ND ND <br /> 11/08/99 45.19 9-02 0.00 36.17 -0.92 <br /> 11/03/04 48.87 9.30 0.00 39.57 3.40 ND<50 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<0.50 <br /> 03/31/05 48.87 8.90 0.00 39.97 0.40 ND<50 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<0.50 • <br /> 03/06/06 48.87 9.19 0.00 39.68 -0.29 ND<50 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 <br /> 06/07/06 48.87 5.47 0.00 43.40 3.72 ND<26 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<0.50 <br /> 08/28/06 48.87 7.43 0.00 41.44 -1.96 ND<50 - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 <br /> 10/16/06 48.87 9.10 0.00 39.77 -1.67 ND<50 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<M0 ND<0.50 <br /> 01/24/07 48.87 9.35 0.00 39.52 -0.25 ND<50 -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<0.50 <br /> U-5 (Screen Interval in feet:5-20) - <br /> 05/23/91 44.93 8.11 0.00 36.82 - 180 - 3200 42 240 68 440 -- - <br /> 08/30/91 44.93 8.21 0.00 36.72 -0.10 380 - 2200 100 13 71 170 - <br /> 11/06/91 44.93 9.12 0.00 35.81 -0.91 ND - 1400 66 6-1 54 38 - <br /> 02/19/92 44.93 8.36 0.00 36.57 0.76 ND - 4700 340 660 120 .770 - <br /> 03/31/92 44.93 9.08 0.00 35.85 -0.72 ND -- 180 12 ND 6.5 2.8 - Samples collected on 4/1/92 <br /> 07aa Page 6 of 14 <br />