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i <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> February 1990 Through December 2004 <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 EIevation Water Thickness water to 8260B benzene Xylenes 8021B 8260D <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) W) (Wg/l) (µg/1) (µg/l) (4g/1) (11g11) <br /> MW-13 continued <br /> 07/26/95 1152 45 36 000 -1384 -119 ND<50 -- 059 21 ND<O 5 24 -- — <br /> 10/25/95 1152 4628 000 -3476 -092 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- - <br /> 01/24/96 1152 4330 000 -3178 298 ND<50 ND<O 5 ND<O 5 ND<0 5 NIXO 5 -- — <br /> 04/25/96 1 1152 3838 000 -2686 -- ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<40 -- Destroyed <br /> MW-14 (Screen Interval in feet 18 0-38 0) <br /> 08121/99 , 11 59 28 58 000 -1699 — ND<50 -- ND<O 50 NIXO 50 ND<O 50 ND<O 50 110 110 <br /> 10/25/99 11 59 2944 000 -1785 -086 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<O 50 180 150 <br /> 01/27/00 1159 2898 000 -1729 0 56 NIK50 ND<O 50 ND<O 50 ND<0 50 ND<O 50 190 170 <br /> 06/26/00 1159 2624 000 -1465 2 64 ND<50 0 -- ND<0 500 ND<O 500 ND<O 500 xn<n 500 151 346 <br /> 09/22/00 1159 28 77 000 -1718 -253 ND ,50 -- ND<O 50 12 ND<O 50 17 290 250 <br /> 12/26/00 ' 1I 59 2964 000 -1705 0 13 ND<50 0 -- ND<O 500 ND<0500 ND<500 ND<0500 221 210 <br /> 03/07/01 1159 2829 0 O0 -1670 035 ND<50 0 -- ND<0500 ND-*500 NIM-500 ND<O400 147 198 <br /> 06/26/01 1159 2930 000 -1771 -101 NIX50 -- ND<O 50 NIXO 50 ND<O 50 ND<4 50 110 120 <br /> 09/12/01 1159 3122 000 -1963 -192 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 55 61 <br /> 12/12/01 1159 3144 000 -1985 -022 ND<50 -- ND<O 50 ND<O 50 NLKO 50 ND<O 50 47 55 <br /> 03/20/02 1159 3021 000 -1862 123 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 33 38 <br /> 06/06/02 1159 3064 000 -1905 -043 — ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 18 <br /> 09/30/02 1159 -- — -- -- — — -- -- Car Parked On Well <br /> 12/30/02 1159 32 77 000 -21 18 -- — ND<50 ND<0 50 ND<O 50 ND<O 50 ND<1 0 ND<2 0 <br /> 03/29/03 1159 3174 000 -201S 103 — ND<50 ND<O 50 ND<O 50 ND<0 50 ND<l 0 -- 93 <br /> 06/25/03 1159 3204 000 -2045 -030 — ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- 7 9 <br /> 09/24/03 1159 3447 000 -2288 -243 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- 35 <br /> 12/30/03 1159 3390 000 -2231 057 -- ND<50 ND<D 50 ND<O 50 ND<O 50 ND<l 0 -- 26 <br /> 03/09/04 1159 3303 000 -2144 0 87 — 50 ND<O 50 ND<O 50 ND<0 50 ND<l 0 -- 36 <br /> [3984 Page 25 of 35 <br />