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Table 2 -- HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS September 1996 Through August 2004 76 Station 5886 Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (110 (Ag/1) (µg11) (41) (µg/1) (µg/1) (4g11.) MW-2 continued 12/13/01 -030 6 18 000 -648 039 -- -- -- -- -- 6500 01/18/02 -030 569 000 -599 049 -- -- - -- -- -- 7200 -- 02/11/02 -030 622 000 -652 -053 ND<I,oaa -- ND<10 ND<10 ND<10 ND<10 4800 4600 03/21/02 -030 6 05 000 -635 017 -- -- -- -- -- -- 150 -- 05/23/02 -030 6 15 000 -645 -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 41 28 08/01/02 -030 658 000 -688 -043 ND<100 -- ND<1 0 ND<1 0 ND<l 0 ND<2 0 -- 200 11/20/02 -030 643 000 -673 0 15 ND<250 -- ND<2 5 ND<2 5 ND<2 5 ND<5 0 -- 290 02/20/03 -030 6 23 000 -6 53 020 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 28 05/07/03 -030 5 51 000 -581 072 ND<50 -- ND<0 50 ND<0 50 0 55 ND 08/04/03 -030 666 0 00 -696 -1 15 -- 68 ND<5 0 ND<5 0 ND<5 0 ND 11/20/03 -030 611 000 -641 0 55 -- 97 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- 120 I 02/11/04 -030 5 85 000 -6 15 0 26 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- 5 7 05/27/04 -030 6 05 000 -635 -020 -- 100 ND<0 50 12 ND<0 50 14 -- 61 08/30/04 -030 6 21 000 -651 -016 97 -- ND<0 5 ND<0 5 ND<0 5 ND<l -- 67 MW-3 (Screen Interval in feet 5 0-25 0) -0 14 8 16 0 00 -8 30 -- 09/09/96 - -- -- -- -- 09/06/96 -- -- -- -- 09/09/96 -014 8 10 0 00 -824 006 -- -- -- - -- 4100 -- 12/06/96 -014 669 000 -683 141 -- -- -- 660 -- 03/07/97 -014 598 000 -612 071 -- -- -- -- 16000 20000 05/02/97 -0 65 660 000 -725 -1 13 -- 3 2 -- -- - 7900 8000 09/02/97 -065 856 000 -921 -196 -- -- -- -- -- 2100 -- 12/01/97 -065 7 05 000 -770 151 -- -- - -- -- -- 1700 -- 03/25/98 -065 5 26 000 -591 179 -- -- -- -- - 8200 8500 06!17198 -0 65 608 000 -673 -082 -- -- -- -- -- - 6200 7300 5886 Page 4 of 27