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s � • Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS September 1996 Through.lune 2005 76 Station 5886 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Sampled Elevation Water Thickness water in 8260E Comments benzene Xylenes 8021$ 82606 Elevation Elevation (feet) (feet) (feet) (feet) (feet) W/1) (µg/1) (ug/1) (Ag/1) (lig/1) (ug/1) W11) W/1) MW-3 continued 02/11/04 -014 S97 000 -611 081 __ 79 ND<0 50 ND<0 50 ND<0 50 ND<1 0 05/27/04 -014 601 000 -6 15 -0 04 __ S9 97 ND<0 50 1 2 ND<0 50 I 1 75 08/30/04 -0 14 6 83 000 -697 -082 ND<50 __ ND<0 5 ND<0 5 ND<0 5 ND 11/23/04 -014 5 73 000 1 7 -5 87 1 10 ND<S0 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 02/23/05 -0 14 5 22 0 00 -536 -- 10 0 51 ND<50 __ ND<0 50 ND<0 50 ND<0 50 ND<l 0 0 70 06/06/05 -014 5 74 000 -588 -052 ND<50 __ ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- 10 MW-4]) (Screen Interval in feet 22 0-25 0) 05/02/97 -004 740 000 -744 -- ND ND ND ND ND ND 09/02/97 -004 959 000 -9 63 -2 19 ND -- 1 ND ND ND 12/01/97 -004 7 98 000 9 9 -` -8 02 1 6i ND -- 051 ND ND ND 03/25/98 -004 617 000 -621 181 ND -- 0 91 ND ND 06/17/98 -004 7 10 0 00 ND 21 17 -7 14 -0 93 ND - 0 85 0 82 ND 081 13 13 09/01/98 -0 04 7 88 000 -792 -078 ND ND ND D 09/01/98 -004 7 88 000 -792 -078 ND ND 19 15 12/03/98 -004 728 000 -732 060 ND -- ND ND ND ND 12 14 03/01/99 -004 628 000 -632 1 00 ND __ ND ND ND ND 46 21 04/19/99 023 7 01 000 -678 -046 06/01/99 023 767 000 -744 -066 ND -- ND ND ND ND 12 4 7 08/16/99 023 797 000 -7 74 -030 ND -- ND ND ND ND 4 6 48 D 08/16/99 023 7 97 000 -7 74 -030 11/29/99 0 23 7 83 000 -760 0 14 ND -- ND 0 5 ND ND 48 7 8 D 11/29/99 023 7 83 000 -760 0 14 02/28/00 023 5 23 000 -Soo 260 ND - ND ND ND ND ND ND D 02/28/00 023 523 000 -500 260 5686 Page 7 of 31