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TABLE 5 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS November 1990 Through January 2007 Former Bulk Plant 0788 Date TOC Depth to LPH Ground- Change TPH-D TPH-G TPH-G Benzene Toluene Ethyl- Total MTBE Comments Sampled Elevation Water Thickness water - in (8015M) (GC1MS) benzene Xylenes (826013) Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µ8(l) (µg/1) ' (Irg/1) (µg/1) (µg/1) tµ8/1) (µF,/1) (µg11) U-1 (Screen Interval in feet:7-27) • 11/11/90 44.91 9.51 0.00 35.40 -- ND 140 - 19 ND 2.4 3 -- 02/14/91 44.91 8.90 0.00 36.01 0.61 ND -- 60 10 ND ND 2.1 -- 05/23/91 44.91 8.19 0.00 36.72 0.71 ND -- ND 56 ND ND 1.0 -- 08/30/91 44.91 8.29 0.00 36.62 -0.10 ND -- ND 13 ND ND ND - 11/06/91 44.91 9.22 0.00 35.69 -0.93 ND - ND ND ND ND ND . 02/19/92 44-91 8.49 0.00 36.42 0.73 ND - ND ND ND ND - ND - 03/31/92 44.91 9.11 0.00 35.80 -0.62 ND - ND 2.1 ND ND ND - 05/08/92 44.91 - 0.00 -- - 200 - ND 8.7 0.7 ND ND - 08/06/92 44.91 - 0.00 -- -- ND - ND ND ND ND ND - 11/18/92 44.91 -- 0.00 __ -- 60 - ND ND ND ND ND - . , 01/21/93 44.91 -- 0.00 - -- ND -- ND ND ND ND ND -- 05/26/93 44.91 8.30 0.00 ,36.61 -- 100 -- ND 5.7 ND ND ND -- 08/14/93 44.91 8.32 0.00 36.59 -0.02 ND -- ND ND ND ND ND -- 11/30/93 44.64 8.62 0.00 36.02 -0.57 ND -- ND ND ND ND ND -- • 02/18/94 44.64 8.85 0.00 35.79 -0.23 ND -- ND ND ND ND ND -- - 05/12/94 44.64 7.99 0.00 36.65 0.86 ND ND ND ND ND ND 08/08/94 44.64 7.66 0.00 36.98 0.33 58 -- ND 10 ND ND ND -- 11/08/94 44.64 9.06 0.00 35.58 -1.40 55 -- ND ND ND ND ND -- 01/13/95 44.64 8.71 0.00 35.93 0.35 ND -- ND 1.1 ND ND ND - 10/10/95 44.64 8.92 0.00- 35.72 -0.21 ND - ND ND ND ND ND - 02/13/96 44.64 8.24 0.00 36.40 0.68 ND -- ND ND ND ND ND - 11/06/96 44.64 7.45 0.00 37.19 0.79 ND -- ND ND ND ND ND -- 05/06/97 44.64 7.04 0.00 37.60 0.41 ND -- ND ND - ND ND ND -- 0788 Page 1 of 14