2017-02-15_REPORT - C1981022 - Laserfiche WebLink

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10M. The D213 mine water transfer well was drilled and completed in late December 2004 in the vicinity of the upper Elk Creek facilities area. When the drill penetrated the B Seam workings, it was apparent that this portion of the B seam mine was flooded with water. The B seam was encountered at the 5918' elevation and a static water level later appeared at the 6042' elevation. Water transfer operations first began in early 2005 for D2B. During late 2011, the D213 water meter failed and had to be replaced. During 2012, we estimate that 81 million gallons of water was transferred. During 2013, with the sealing and later idling of the Elk Creek mine due to the spontaneous combustion event behind the longwall no water was transferred during the year. During 2014, the mine was still sealed and no water pumping. The water level remains at the 6051' elevation. In addition, since the floor of the historic Somerset B Seam Mine portal is at the approximate 6090' elevation, there remains approximately 39' of elevation remaining before the water could exit the mine at that location. D2B2 The D2132 borehole was completed in December 2005 in the vicinity of the Hubbard Fan. Water transfer started during early 2006. The bottom 39' of the 338' borehole is uncased. The B seam coal roof was encountered at 6046' elevation. After initial water transfer, initial water level was encountered at 6053' elevation, or 7' above the coal. Subsequent measurements encountered an apparent dry borehole obstruction at the 6070.7' elevation or 24' above the coal. The obstruction has not precluded water transfer, but has limited the ability to lower the sounder past the obstruction. During 2008, the sounder encountered more favorable conditions and a water level appeared at the 6064' elevation. During 2008 the underground pumps ran very little. On October 12, 2008 the 13 West gate road was sealed, the Hubbard fan dismantled, the shaft sealed with earthen materials and the western mining district sealed off. Pumping of water to D2132 was also concluded. The reclamation and seeding of the Hubbard fansite was completed in early 2012. Water Level (Elevation Ft.) Date D2B D2B2 January 14, 2005 6044.0 - January 19, 2005 6044.0 - February 22, 2005 6044.6 - March 31, 2005 6043.6 - May 3, 2005 6044.0 - June 15, 2005 6044.5 - July 11, 2005 6043.6 - August 24, 2005 6044.6 - October, 17, 2005 6045.0 - April 19, 2006 - 6053 May 25, 2006 6047 - June 7, 2006 - 6066.7 July 26, 2006 6047 6070.7 October 17, 2006 6045 - 16