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• • ! <br /> Table 2 <br /> HISTORIC GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS <br /> February 1999 Through May 2004 <br /> Circle K Store 08671 <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 8260E benzene Xylenes 8021B 8260E <br /> Elevation Elevation <br /> (feet) (teet) (feet) (feet) (feet) (µg11) (µg11) (µg11) (µg11) (41) (µg11) (41) 441) <br /> MW-1 (Screen Interval in feet 25 0-45 0) <br /> 05/14/99 12 59 2698 000 -1439 -- -- - .- _ -- -- 22 22 <br /> 08/17/99 1259 3038 000 -1779 -340 -- -- 1 3 -- -- -- 67 76 <br /> 11/01/99 1259 3196 000 -1937 -158 -- .- -- ._ .. 220 190 <br /> 02/07/00 1259 2946 000 -1687 250 1 - -- -- 290 530 <br /> 05/01/00 1259 2648 000 -13 89 2 98 151 -- - -- -- -- 1790 3570 <br /> 07/28/00 1259 3142 000 -18 83 -494 -- - -- -- -- -- 170 1100 <br /> 11/27/00 1259 3030 000 -1771 1 12 -- -- -- -- -- -- 240 270 <br /> 01/31/01 1259 28 81 000 -1622 149 -- -- -- -- - -- 882 838 <br /> 05/26/01 1259 28 15 000 -15 56 066 -- -- -- -- 2010 1610 <br /> 08/22/01 1259 3176 000 -19 17 -3 61 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<0 50 340 510 <br /> 11/20/01 12 59 3227 000 -1968 -051 ND<50 - ND<0 50 0 78 ND<0 50 0 92 450 450 <br /> 02/12/02 1259 29 92 000 -17 33 -- ND<200 -- ND<2 0 ND<2 0 ND<2 0 ND<2 0 860 1100 <br /> 05/06/02 12 59 2934 000 -16 75 058 -- 5700 ND<25 ND<25 ND<25 ND<25 -- 4400 <br /> 08/07/02 1259 33 58 000 .2099 -424 - 420 ND<1 0 ND<l 0 ND<1 0 ND<2 0 - 340 <br /> 11/04/02 1259 3580 000 -2321 -2 22 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 140 <br /> 02/03/03 1259 3272 000 -20 13 3 08 -- ND<200 ND<2 0 ND<2 0 ND<2 0 ND<4 0 -- 450 <br /> 05/14/03 1259 3075 000 -I8 16 197 ND<250 ND<2 5 ND<2 5 ND<2 5 ND<5 0 _. 500 <br /> 08/13/03 12 59 35 44 000 -2285 -469 -- 300 ND<1 0 ND<1 0 ND<1 0 ND<2 0 -- 200 <br /> 11/14/03 1259 3761 000 -25 02 -2 17 - 200 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- 80 <br /> 02/12/04 1259 3429 000 -21 70 3 32 -- 680 ND<5 0 ND<5 0 ND<5 0 ND<10 740 <br /> 05/14/04 1259 3375 000 -21 16 054 -- 720 ND<5 0 ND<5 0 ND<5 0 ND<10 - 990 <br /> MW-2 (Screen Interval in feet 25.045.0) <br /> 02/15/99 1240 2788 000 -1548 -- 100 -- 3 56 -- -- -- -- -- <br /> 05/14/99 1240 2675 000 -14 35 1 13 58 - 16 069 -- - -- -- <br /> 08/17/99 1240 30 14 000 -1774 -339 96 -- 3 9 -- -- -- 33 -- <br /> 08671 Page 1 of 5 <br />