Laserfiche WebLink
which was completed on November 9, 2007. On June 18, 2008 and during the sampling event of <br />August 8, 2008 attempts were made for the routine sample of the "new" well. We found that the <br />well was "pushed over" making it unuseable again. Repairs were made to the well on August 25, <br />2008 and the well successfully sampled on August 26, 2008. A large concrete barrier has been <br />placed in front of BC-1 to prevent additional damage. <br />During 2009 Bear Creek exhibited normal spring snow melt flows followed by usual complete <br />absence of flow during the dry season. <br />During 2009, water samples were available in BC-1. Water Analysis of the BC-1 data suggests <br />no anomalies. <br />EC-14. EC-15 Wells - Elk Creek - Alluvium/Colluvium <br />The EC-14 well is located up gradient of the EC-15 well. The EC-14 well is located in <br />undisturbed alluvium/colluvium up-gradient from the Elk Creek mine surface facility but down- <br />gradient from the eventual D seam mining area located in the upper reaches of Elk Creek. The <br />EC-15 well is located in alluvium/colluvium located south of the D seam portal area but north of <br />the coal stockpile area. Changes in the hydrologic condition of shallow Elk Creek alluvial <br />groundwater due to mining activities could potentially be monitored from these two wells. <br />During 2008, water levels in the wells were variable. The EC-14 and EC-15 lab samples were <br />• obtained on June 18, 2008 and August 8, 2008 and the data suggests no anomalies. <br />Overall, analysis of the very limited data for these wells suggest no anomalies. <br />D2B and D2B2 Mine Water Transfer Wells ( "D seam to B seam") <br />The purpose of these two boreholes are to transfer mine water from the D seam Elk Creek mine <br />workings to the underlying Somerset B/C seam workings. The depth to water is to be measured <br />at the same frequency as the overall OMLLC groundwater monitoring program. Data is also to <br />be collected regarding 1) annual total volume of water transferred, 2) representative pH of <br />transferred water and 3) representative TSS of transferred water. <br />D2B <br />The D2B mine water transfer well was drilled and completed in late December 2004 in the <br />vicinity of the upper Elk Creek facilities area. When the drill penetrated the B Seam workings, it <br />was apparent that this portion of the B seam mine was flooded with water. The B seam was <br />encountered at the 5918' elevation and a static water level later appeared at the 6042' elevation. <br />Water transfer operations first commenced in early 2005 in D2B. During 2009, the D2B water <br />meter indicated 97 million gallons of transferred water. This volume reflects the transfer of water <br />that had collected in the sump from sealed 4 West and 5 West Entries, sealed 13 West Entry, <br />motor cooling water and dust control overspray. In. addition, since the floor of the historic <br />Somerset B Seam Mine portal is at the approximate 6090' elevation, there remains <br />approximately 31' of elevation remaining before the water could exit the mine at that location. <br />13