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• • i <br /> TABLE 1 (continued) <br /> Casing Depth Groundwater LPH Concentration(µg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (ft msl) (ft) (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> RW4 02/13/96 923 2623 -1700 000 2,200 13,000 2,200 9,700 78,000 -- <br /> i <br /> 04/18/96 2376 -1453 000 1,900 9,200 2,100 8,400 62,000 <500 <br /> 08/08/96 2491 -15 68 000 730 2,500 970 2,900 15,000 <125 <br /> 11/04/96 2528 -1605 000 1,600 5,200 1,300 4,900 36,000 <250 <br /> 02/03/97 2140 -12 17 000 1,700 6,500 1,900 7,200 42,000 1,300 <br /> 05/08/97 786 2005 -12 19 000 540 1,500 720 2,200 16,000 56 <br /> 08/26/97 2151 -13 65 000 98 180 140 340 2,600 56 <br /> 11/11/97 22 12 -1426 000 260 350 320 570 4,100 98 <br /> 03/03/98 1685 -899 000 1,500 4,600 2,100 6,000 38,000 1,100 <br /> 03/03/98 <67* <br /> 05/20/98 16 11 -825 000 450 460 600 890 7,400 400 <br /> 05/20/98 <6 7* <br /> 08/19/98 1751 -9 65 000 130 240 210 580 3,100 90 <br /> 08/19/98 <12* <br /> 11/18/98 1798 -1012 000 300 480 400 970 5,600 <25 <br /> 03/30/99 -- -- -- -- ._ __ __ -- <br /> 05/05/99 -- -- -- -- -- - <br /> SWI 02/17/94 Not accessible since 02/17/94 <br /> 02/17/95 2801 Air spargmg well--samples not collected <br /> 05/11/95 -- Air spargmg well-- samples not collected <br /> 08/24/95 -- Air spargmg well-- samples not collected <br /> 10/19/95 -- Air spargmg well--samples not collected <br /> 02/13/96 -- Air sparging well--samples not collected <br /> 04/18/96 -- Air spargmg well--samples not collected <br /> 08/08/96 Air spargmg well--samples not collected <br /> 11/04/96 2424 000 2,400 3,100 290 2,800 25,000 <250 <br /> 02/03/97 -- -- -- <br /> 05/08/97 -- -- -- -- -- -- -_ __ __ <br /> 08/26/97 -- -- -- <br /> 11/11/97 -- -- -- -- -- -- -- <br /> 03/03/98 -- -- -- -- -- <br /> 73942 Q599 T1 XL5 Page 24 <br />