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Table 2 <br /> HISTORIC GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS <br /> October 1998 Through April 2004 <br /> Circle K Store 01205 <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) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) <br /> MW-1 (Screen Interval in feet. 6 0-26 0) <br /> 1/25/1999 1762 1 1 73 000 5 89 -- 40000 -- 320 1800 2500 12000 -- 22000 <br /> 4/29/1999 17 62 1021 000 741 1 52 380 - 6 9 27 9 4 100 -- 51 <br /> 7/16/1999 1762 1108 000 654 -087 67000 - 380 1500 2900 17000 -- 820 <br /> 10/21/1999 1762 1143 000 6 19 -035 31000 - 110 1100 1900 11000 - 250 <br /> 1/31/2000 17 62 1050 000 7 12 093 48000 -- 100 2900 2500 16000 -- 2200 <br /> 4/10/2000 1762 870 000 892 1 80 45600 -- ND 1570 2660 15000 -- 186 <br /> 7/5/2000 1762 965 000 797 -095 29400 -- 704 224 1910 8910 -- ND <br /> 10/20/2000 1762 11 53 000 609 -1 88 41800 -- 105 1210 2980 14300 -- 3 <br /> 1/8/2001 1762 1200 000 562 -047 18000 -- ND 530 990 6000 -- 29 <br /> 4/26/2001 1762 1141 000 621 059 19300 984 814 1400 7140 -- 606 <br /> 7/19/2001 1762 1232 000 530 -091 55000 -- 160 1900 2700 15000 -- ND <br /> 10/25/2001 17 62 13 79 000 3 83 -147 13000 -- 60 580 1000 5600 -- ND<20 <br /> 1/29/2002 1762 13 05 000 457 0 74 11000 -- 50 480 700 3600 -- ND<20 <br /> 4/29/2002 1762 1289 0 00 4 73 0 16 5700 - 41 390 340 2000 -- ND<10 <br /> 7/29/2002 17 62 13 88 000 3 74 -099 54000 ND<100 1600 3700 18000 - ND<400 <br /> 10/25/2002 1762 1521 000 241 -1 33 13000 -- 43 260 910 3800 -- ND<20 <br /> 1/24/2003 1762 1447 000 3 15 -- 1600 - 3 7 8 100 280 -- 3 6 <br /> 4/25/2003 1762 13 98 000 3 64 049 14000 -- 29 430 800 5500 -- ND<40 <br /> 7/25/2003 1762 1465 000 297 -067 -- 70000 110 1600 3200 23000 -- ND<400 <br /> 10/9/2003 1762 15 85 000 177 -1 20 - 3100 34 34 260 820 -- ND<20 <br /> 1/26/2004 1762 14 13 000 349 1 72 - 380 20 3 9 4 5 10 -- 8 7 <br /> 4/27/2004 1762 13 02 000 460 1 11 -- 12000 160 56 1500 210 26 <br /> MW-2 (Screen Interval in feet 6 0-26 0) <br /> 10/8/1998 1750 11 17 000 633 -- 18000 -- 210 100 1600 1700 4000 <br /> 1/25/1999 1750 11 64 000 5 86 -047 28000 -- 270 410 2400 6300 - 79000 <br /> 01205 Page I of 8 <br />