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• 6.0 Mine Water Information <br />Elk Creek Mine Water <br />The water utilized in the mine is al] imported from Che alluvial water supply well located near the <br />North Fork of the Gunnison River per the OMLLC water rights. Water that is collected and <br />routed to the underground Elk Creek mine sump comes primarily from a number of sources, <br />including overspray on mining equipment and beltlines for dust control, motor cooling and <br />general leaks and spillage, etc. <br />During July, 2005 a thermal event occurred in the ls` West Panel gob. Control of the event was <br />facilitated, impart, by pumping of water into the area for cooling purposes. Subsequently, in late <br />2005, it was observed that the sealed 4 West and 5 West gate road areas were generating <br />approximately 14 gpm and 12 gpm of water respectively from behind the mine seals. The water <br />is eventually routed to the mine sump. We believe the source of water draining from these two <br />sealed gate roads is the water pumped into the area earlier in the year, working its way down <br />gradient to these two low points in the mine. <br />See the D2B well discussion above for information regarding the transfer of collected Elk Creek <br />mine sump water to the abandoned Somerset B/C seam workings. <br />• Otherwise, the groundwater encountered in the mine is fairly minimal and scattered. Perched <br />water bearing zones are sometimes encountered but they seem to dewater fairly quickly. <br />During 2006 the second D seam to B seam water transfer borehole (D2B2) completed at the <br />Hubbard Fansite will be utilized to address the water transfer needs of the western mining <br />district. <br />Outfall 011 -Sanborn Creek Mine Water Discharge <br />Outfal] 011 was the OMLLC -CDPS mine water discharge point from Sanborn Creek Mine that <br />discharged into Sanborn Creek <br />The Sanborn Creek Mine water drainage system was decommissioned on May 21, 2003. Since <br />the mine completed the last panel, the underground hardware was removed and the entries were <br />sealed in accordance with MSHA requirements. <br />During 2004, CDMG approved PAP TR-45 which removed Outfall 011 as a monitoring point. <br />Outfa11015 -Elk Creek Mine Water Discharge <br />Outfa11015 is a CDPS mine water discharge point for the Elk Creek Mine. The mine water <br />discharge point provides for the discharge of mine water to Elk Creek. The Outfa11015 has <br />• never discharged. <br />15 <br />