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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS September 1996 Through June 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 m benzene Xylenes 8021B 826OB 8260$ Comments Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/1) (Pg/0 (µg/1) (µg/1) (µg/1) (µg11) MW-8I coatmued 05/10/00 -106 6 21 0 00 -727 -168 ND 08/03/00 -106 7 17 000 -823 -096 ND -- ND ND ND ND ND ND 11/16/00 -106 639 000 -745 078 ND ND ND ND ND ND ND � ND ND ND ND ND 2 2 02105/01 -106 624 000 -730 0 15 ND � -- ND ND ND ND ND ND 05/07/01 -106 607 000 -7 13 0 17 ND -- ND ND ND ND ND ND 08/20/01 -106 6 91 000 -797 -0 84 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<0 50 ND<5 0 ND<2 0 11/19/01 -106 663 000 -769 028 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<0 50 ND<5 0 ND<1 0 02/11/02 -106 6 34 000 -740 029 ND<50 __ ND<O 50 15 ND<0 50 1 4 05/02/02 -106 632 000 ND<2 5 ND4 0 -7 38 0 02 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<0 50 ND<5 0 ND<2 0 08/01/02 -106 665 0 00 -771 -033 ND<50 ND<O 50 ND<0 50 ND<O 50 ND<1 0 11/20/02 -106 636 000 -742 -- ND<2 0 0 29 -- ND<50 ND<O 50 ND<0 50 ND<0 50 ND<l 0 02/20/03 -106 625 0 00 -731 0 ]1 __ -- ND<2 6 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 ND<2 0 05/07/03 -106 __ - "- Monitored/Sampled Serm- 08/04/03 -106 675 000 _7 81 __ ND<50 ND<5 0 ND<5 0 ND<5 O ND<l 0 ND<2 0 Annually -- 02/11/04 -1 06 5 71 000 -677 1 04 ND<50 052 ND<O 50 1 0 ' 05/27/04 -106 -- 2 9 - ND<2 0 08/30/04 -1 06 6 18 000 -724 _ - "- -- Sampled Semi-Annually 71 -- ND<0 5 ND<O 5 ND<O 5 ND<1 11/23104 -1 06 __ __ -- ND<O 5 Monitored and Sampled Semi 02/23/05 -106 549 000 -655 __ ND<50 _ Annually ND<0 50 ND<O 50 ND<O 50 Nb<1 0 2 I 06/06/05 -106 592 000 -698 -043 -- __ _ Sampled semi-annually MW-8$ (Screen Interval in feet 5 0-15 0) 04/14/99 -1 00 623 000 -723 __ ND __ - ND ND ND ND 169 5886 06/01/99 -100 6 86 000 -786 -0 63 ND ND ND ND ND ND ND Page 22 of 31