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s <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> May 1990 Through November 2004 <br /> Former SP Oil 11192 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE TBA Comments <br /> Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260E 8260E <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg11) (µg/1) (4g/1) (µg11) (µg/1) (µg11) (µg/1) (µg/1) (14g/1) <br /> MW-4 continued <br /> 07/23/01 675 1468 000 -7 93 -171 440 -- ND<0 5 ND<O 5 ND<0 5 ND<l 5 610 -- — <br /> 08/16/01 6 21 1507 000 -8 86 -093 -- <br /> 11/09/01 6 2I 16 04 000 -983 -- ND<50 — ND<0 50 ND<O 50 ND<O 50 ND<O 50 530 470 ND<50 <br /> 12/14/01 6 21 1586 0 00 -965 0 18 650 -- ND<0 5 ND<0 5 ND<O 5 ND<1 0 612 — -- <br /> 01/10/02 621 1400 000 -779 186 470 — ND<2 5 ND<2 5 ND<2 5 ND<5 0 383 -- -- <br /> 02/18/02 621 1392 000 -771 0 08 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<0 50 44 55 ND<100 <br /> 05/31/02 621 1412 000 -791 -020 -- ND<50 ND<O 50 ND<O 50 ND<0 50 ND<t 0 -- 64 ND<100 <br /> 08/08/02 6 21 15 48 000 -927 -136 -- 220 ND<O 50 ND<0 50 ND<0 50 ND<O 50 -- 270 ND<20 <br /> 11/15/02 621 1685 000 -1064 -137 -- 150 ND<O 50 067 ND<O 50 064 - 150 ND<100 <br /> 01/03/03 621 1579 000 .958 106 -- ND<50 ND<O 50 ND<0 50 ND<O 50 ND<1 0 -- 130 ND<100 <br /> 05/14/03 621 1493 000 -8 72 086 -- ND<50 ND<O 50 ND<0 50 ND<0 50 ND<O 50 -- 19 ND<100 <br /> 08/14/03 621 16 51 000 -1030 -158 -- ND<50 ND<O 50 ND<O 50 ND<0 50 ND<l 0 42 ND<100 <br /> 11/26/03 621 1837 000 -1216 -186 -- 130 ND<O 50 070 ND<O 50 ND<l 0 -- 71 ND<100 <br /> 02/23/04 6 21 1587 000 -966 250 -- ND<50 ND<O 50 ND<0 50 ND<O 50 ND<I 0 20 ND<l 00 <br /> 05/21/04 621 1550 000 -929 037 -- 51 ND<0 50 ND<0 50 ND<O 50 IN'D<l 0 -- 28 ND<5 0 <br /> 08/10/04 6 21 1673 000 -1052 -123 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<I 0 — 12 ND<5 0 <br /> 11/24/04 6 21 1727 000 -1106 4 54 -- 54 ND<O 50 ND<0 50 ND<O 50 ND<1 0 -- 54 ND<5 0 <br /> MW-5 <br /> 08/05/91 6 15 3072 000 -24 57 -- ND -- ND ND ND ND -- — -- <br /> 08/15/91 615 — — -- <br /> 12/09/91 6 15 31 10 000 -2495 -- ND -- ND ND ND ND -- — -- <br /> 03/09/92 6 15 3047 000 -2432 063 ND -- 6 2 ND 05 ND -- -- -- <br /> 06/19/92 6 I5 2999 000 -23 84 048 ND<50 - ND<O 5 ND<O 5 N6<0 5 ND<O 5 -- -- -- <br /> 09/18/92 6 15 3192 000 -2577 -193 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<0 5 -- -- - <br /> 11192 Page 7 of 18 <br />