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in effects from the drought ending in 2004 and the highly restrictive strata preventing or <br />delaying recharge from a much wetter than normal 2005. <br />^ <br />33-8U also showed a noteworthy drop of 10.9 feet. This drop is probably due to the close <br />proximity of longwall mining. Longwall panel LWB-6 was mined out in early April 2005 <br />and was located as close as 1400' from this hole. <br />' The middle "siltstone-coal facies" monitoring holes are designated by an "M" following the <br />hole number. These monitor holes are open through the interval containing the D Seam <br />' and B Seam. <br />Monitor hole TW2-17M was by-passed by mining first in November 1985 but was not <br />intercepted in the workings. It is apparently located in a pillar completely surrounded by <br />open workings. At that time it showed virtually no response to room-and-pillar mining. In <br />' February 1988 longwall panel 1 was mined to within about 900 feet of this hole. <br />Obviously, longwall mining disrupts the mined zone more than room-and-pillar mining, and <br />' the water level in TW2-17M did show a response to mining at that time. The water level <br />has steadily decreased since 1988 with a decrease of 6.3 feet during the 2004-05 period. <br />This followed a decrease of 39.7 feet in 1998-99, 11.2 feet in 1999-2000, 5.4 feet in 2000- <br />' 2001, 2.6 feet in 2001-2002, 9.0 feet in 2002-2003, and 7.8 feet in 2003-2004. The 1998- <br />99 water year showed a substantial change probably due to the mining of LW-12. <br />Hole 32-7M became dry after longwall mining passed directly through this hole in 2001. <br />The water level in Hole 30-8M decreased 39.3 feet. The cause of this decrease is most <br />likely the advancement of mining development nearer to the well. This well is scheduled <br />to be mined through in 2006. Qualitative sampling of this well will take place in 2006 prior <br />to being mined through, <br />33-8M experienced a similar drop in water level as 33-8U as a result of mining in longwall <br />panel LWB-6. <br />The hydrographs of the "lower sandstone facies" are designated by the letter "L" following <br />the hole number. <br />Hole 32-7L was mined through by the longwall in early 2001. Prior to being mined through <br />the hole was plugged to above the coal seam with Baroid Holeplug. <br />6 <br />