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2014-01-31_REPORT - C1981018
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2014-01-31_REPORT - C1981018
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Last modified
8/24/2016 5:39:27 PM
Creation date
1/31/2014 10:55:39 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981018
IBM Index Class Name
Report
Doc Date
1/31/2014
Doc Name
29th Annual Hydrology Report (October 2012 Through September 2013)
From
Blue Mountain Energy
To
DRMS
Annual Report Year
2013
Permit Index Doc Type
Hydrology Report
Email Name
ZTT
DIH
Media Type
D
Archive
No
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There is one upper facies hole with water (22 -3U). 22 -3U is a newer hole constructed in <br />the fourth quarter of 2005 for baseline and monitoring purposes of future mining activities. <br />Water levels in this well appeared stable over the past year with an indicated rise of only <br />0.3 feet. Data for this well and other wells are shown in Appendix C. <br />Well 29-4U was subsided in early 2013. A blockage resulted at 309.2 feet. It is expected <br />that this well would have reported as being dry even if no blockage had occurred. <br />Well 33 -8U was still obstructed by a dead rodent at 211.9 feet. This obstruction will most <br />likely eventually decompose allowing future measurements. Historically the changes in <br />the water level for this hole closely mimicked those of 33 -8M and 33 -81- which have <br />remained relatively stable. <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 />Monitoring hole 22 -3M was drilled in November 2006 and is now the 'point of compliance'. <br />Depth to water data is included in Appendix D and annual qualitative data presented in <br />Appendix C. This hole has exhibited a very slow artesian flow from 2007 through 2012. <br />The flow rate has ranged from 150 ml /minute in 2010 to 13.2 ml /minute in 2012. The <br />artisan flow has now stopped and the water level has dropped to 1.8 feet. <br />Monitor hole TW2 -17M was surrounded 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 development 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 development mining, and <br />the water level in TW2 -17M did show a response to mining at that time. The water level <br />generally decreased since 1988 with a rise of 6.1 feet since the last monitoring period. <br />This rise may be associated with the rising waterline within the D -seam workings. <br />Monitoring Hole 29 -4M was plugged in November 2012 to eliminate connection with the <br />sealed off portion of the mine. <br />The water level in Hole 30 -8M was confirmed dry at 464.5 feet. This is the same <br />elevation as last year. The prior four years of measurements may have been showing <br />residual water left in the casing. This well is located in a pillar next to the start line for <br />LWB -8. This pillar was developed in September 2006. A substantial decrease in water <br />level was noted following the development work. <br />I <br />
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