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REP42347
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REP42347
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Entry Properties
Last modified
8/25/2016 12:44:13 AM
Creation date
11/27/2007 9:34:15 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Report
Doc Date
3/13/2006
Doc Name
2005 Annual Hydrology Report
From
Oxbow Mining LLC
To
DMG
Annual Report Year
2005
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
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EC-14. EC-15 Wells -Elk Creek- Alluvium/Colluvium <br />The EC-14 well is located up gradient ofthe EC-IS 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 2005 water levels in the wells were variable. The EC-14 lab sample was obtained on <br />October 17, 2005 and the data suggests no anomalies. <br />Due to lack of groundwater the EC-15 fall sample was unavailable. <br />Overall analysis of the very limited data for these wells suggest no anomalies. <br />D2B Mine Water Transfer Well ("D seam to B seam") <br />The D2B mine water transfer well was approved by PAP TR-47 and the borehole was drilled and <br />completed in late December 2004. The purpose of the well is to transfer mine water from the D <br />seam Elk Creek mine workings to the Somerset B/C seam workings. The as-built well <br />completion diagram was submitted in TR-50 (calendar year 2005). The depth to water is to be <br />• measured at the same frequency as the overall OMLLC groundwater monitoring program. Data <br />is also to be collected regarding 1) annual total volume of water transferred, 2) representative pH <br />of transferred water and 3) representative TSS of transferred water. <br />Water transfer operations did not commence until early 2005. The D2B water meter was read on <br />December 28, 2005 and indicated 20,532,300 gallons of water transferred during 2005. This <br />volume reflects the transfer of water that had collected in the sump since the sump had been <br />completed (2004). <br />When the drill penetrated the B Seam workings, it was apparent that this portion of the B seam <br />mine was flooded with water. The B seam was encountered at the 5918' elevation and a static <br />water level later appeared at the 6042' elevation. <br />During 2005; the water level was checked at an increased frequency than required and data <br />obtained as follows: <br />Date <br />• <br />Water Level (Elevation Ft.) <br />January 14, 2005 6044. 0 <br />January 19, 2005 6044. 0 <br />Februar 22, 2005 6044.6 <br />March 31, 2005 6043. 6 <br />May 3, 2005 6044. 0 <br />June 15, 2005 6044. 5 <br />Jul 11, 2005 6043. 6 <br />Au ust 24, 2005 6044. 6 <br />October, 17, 2005 6045. 0 <br />12 <br />
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