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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS December 1992 Through March 2005 Former BP Oil 11195 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampied Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (14g/1) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) {µg/1) MW-4 continued 5/17/93 9.03 8.25 0.00 0.78 2.81 6600 -- 7.7 3.3 640 1000 -- 9/15/93 . 9.03 9.64 OAO -0.61 0.00 16000 -- ND ND 1000 1300 -- -- D 9/15/93 9.03 9.64 0.00 -0.61 -1.39 16000 -- 18 ND 1000 1200 -- -- 1/12/94 9.03 10.38 0.00 -1.35 -0.74 3200 -- 6.2 1.4 150 112 -- -- 5/12/94 9.03 9.70 0.00 -0.67 -- 160 -- ND 2.5 0.7 ND -- -- 10/7/94 9.03 10.46 0.00 -1.43 -0.76 13000 -- 11 2.1 1100 33 -- 12/8/94 9.03 10.62 0.00 -1.59 -0.16 5400 -- 20 27 490 54 -- 2/21/95 9.03 8.29 0.00 0.74 0.00 11000 -- ND ND 990 460 -- - D 2/21/95 9.03 8.29 0.00 0.74 2.33 11000 -- ND ND 990 450 -- - 6/9/95 9.03 7.79 0.00 1.24 OM 88 -- ND ND ND ND D 6/9/95 9.03 7.79 0.00 1.24 0.50 810 -- ND 0.52 22 2.5 - -- 8/31/95 9.03 9.73 0.00 -0.70 -1.94 2500 -- ND ND 130 14 ND - D 8/31/95 9.03 9.73 0.00 -0.70 0.00 2800 -- ND ND 160 17 ND -- 11/2/95 9.03 10.30 0.00 -1.27 0.00 1800 ND ND 56 3.6 ND -- D 11/2/95 9.03 10.30 0.00 -1.27 -0.57 1300 -- ND ND 38 2.7 ND -- 2128196 9.03 6.87 0.00 2.16 3.43 2700 - 2.6 1 220 75 ND -- 9/5/96 9.03 9.19 . 0.00 -0.16 0.00 530 -- ND ND ND ND ND - D 9/5/96 9.03 9.19 0.00 -0.16 -2.32 110 -- ND ND ND ND ND -- 3/25/97 9.03 6.40 0.00 2.63 2.79 590 -- ND ND 1.3 ND ND -- 10/15/97 9.03 10.59 0.00 -1.56 -4.19 1600 -- 3.6 ND ND ND 60000 -- 1/15/98 9.03 9.37 0.00 -0.34 1.22 19000 -- 7.3 ND ND ND 18000 -- 5/7/98 9.03 6.30 0.00 2.73 3.07 1100 -- ND ND ND ND 1100 D 5/7/98 9.03 6.30 0.00 2.73 0.00 19000 - 6.6 ND ND ND 18000 -- 9/3/98 9.03 8.58 0.00 0.45 -2.28 2400 -- ND ND 2.8 ND 680 -- 11195 Page 8 of 24 k:Ys�t__"___________________........v._..,_ti4u...�t.�u._..�.�_:\�.v�....SS:..�iL.,.._...�.«�.«.��_�._..__.______s_._ti:�,.•ti__ti.ti_4�.�..._._.......,.__..__.......tti...._...._�:�.'..,.._..a.�..,_.._.......i.._..�.tir:4t�...�.._�..�...._...._.....__...._.___________.� S -�T.$•.:.