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i • <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through March 2005 <br /> Former 76 Station 6981 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments <br /> Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg11) (µg11) (Ag/1) (pg/1) (µg/1) (µg11) (µg11) (µg11) <br /> MW-9 continued <br /> 12/30/03 11 76 3354 000 -21 78 042 - 77 ND<0 50 1 3 ND<0 50 19 -- ND<2 0 <br /> 03/09/04 11 76 3255 000 -2079 099 -- ND<50 ND<0 50 ND<0 50 ND<0 50 12 -- ND<2 0 <br /> 06/16/04 11 76 33 21 000 -21 45 -066 -- 60 ND<0 50 064 ND<0 50 ND<l 0 -- ND<0 50 <br /> 09/20/04 11 76 3608 000 -2432 -287 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<I 0 -- 1 8 <br /> 12/30/04 1176 3550 0 00 -23 74 058 ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<I 0 <br /> 03/24/05 1176 34 10 000 -2234 140 ND<50 •-- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 091 <br /> MW-IO (Screen Interval in feet DNA) <br /> 10/21/92 -- -- -- -- -- ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 01l13/93 -- -- -- -- -- ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 04/26/93 1044 4825 000 -3781 -- ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 07/26/93 1044 4922 000 -3878 -097 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 - -- <br /> 10/20/93 1044 4968 000 -3924 -046 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 01/17/94 1044 4729 000 -3685 239 250 -- 4 2 3 12 53 - -- <br /> 02/28/94 1044 4624 000 -35 80 105 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- - <br /> 04/25/94 1044 4530 000 -3486 094 ND<50 -- ND<0 5 ND<0 5 ND<0 5 1 1 -- - <br /> 07/25/94 1044 4768 000 -3724 -238 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- - <br /> 10/26/94 1044 4877 000 -3833 -109 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- - <br /> 01/25l95 1044 46 11 000 -3567 266 ND<50 -- ND<0 5 062_ ND<0 5 082 - - <br /> 04/26/95 1044 41 78 000 -3134 433 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 07/26/95 1044 4262 000 -32 18 -084 ND<50 -- 06S 2 3 ND<0 5 25 - -- <br /> 10/25/95 1044 4344 0 00 -3300 -082 ND<50 -- ND<0 5 063 ND<0 5 072 -- -- <br /> 01/24/96 1044 4079 000 -3035 2 65 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 04/25/96 1044 3632 000 -25 88 -- ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<40 -- Destroyed <br /> MW-11 (Screen Interval in feet 54 0-72 0) <br /> 6981 Page 21 of 36 <br />