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Ic � � � � � � TABLE i (continued) Casing Depth Groundwater LPH Concentration (µg/L) Well Elevation to Water Elevation Thickness Ethyl- No Date (ft msl) (ft) (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-g MTBE RW2 01/28/92 8 13 3076 -2263 000 260 1,200 590 2,500 17,000 -- 04/30/92 Not accessible -- __ - -- 08/13/92 3247 -24 34 000 130 630 280 1,100 8,500 -- 10/08/92 3303 -2490 0 00 130 630 250 1,400 11,000 -- 02/23/93 2971 -2158 000 130 580 1,000 2,000 9,700 -- 05/18/93 2830 -20 17 000 420 1,400 750 2,400 16,000 - 08/22/93 2857 -2044 000 330 1,100 620 1,900 15,000 -- 12/30/93 2788 -1975 000 620 870 690 2,600 26,000 -- 02/17/94 2749 -1936 000 170 140 150 540 5,600 -- 05/10/94 27 17 -1904 000 230 750 410 1,100 10,000 -- 08/02/94 2865 -2052 000 -- -- -- -- __ 11/01/94 2899 -20 86 000 -- -- -- __ -- 02/17/95 2644 -1831 000 220 680 460 1,400 11,000 05111/95 23 83 -1570 000 350 670 560 1,500 12,000 - 08/24/95 25 19 -1706 000 200 420 430 1,000 12,000 -- 10/19/95 25 66 -1753 000 240 360 430 1,200 9,500 <50 02/13/96 2342 -1529 0 00 170 370 400 1,100 11,000 -- 04/18/96 21 10 -1297 000 180 280 350 880 9,600 74 08/08/96 2228 -14 15 0 00 160 360 470 1,100 7,800 <50 11/04/96 2268 -1455 000 230 180 460 980 10,000 290 02/03/97 1822 -1009 000 170 120 270 640 6,100 240 05/08/97 676 1775 -1099 000 160 130 330 540 7,400 260 08/26/97 1953 -1277 000 190 170 320 450 7,000 110 11/11/97 2007 -13 31 000 200 170 370 610 7,200 350 03/03/98 1447 -771 000 92 160 300 590 6,000 260 03/03/98 <14* 05/20/98 14 35 -759 000 130 140 310 560 6,600 250 05/20/98 <14* 08/19/98 15 86 -9 10 000 100 160 330 800 7,500 1,700 08/19/98 <40* 11/18/98 1620 -944 000 110 130 280 510 5,300 95 73942Q I 198 TI XLS Page 2$