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2019-01-22_REPORT - C1981018
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2019-01-22_REPORT - C1981018
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Last modified
1/24/2019 7:33:54 AM
Creation date
1/23/2019 10:29:33 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981018
IBM Index Class Name
Report
Doc Date
1/22/2019
Doc Name
Annual Hydrology Report
From
Blue Mountain Energy
To
DRMS
Annual Report Year
2018
Permit Index Doc Type
Hydrology Report
Email Name
CCW
Media Type
D
Archive
No
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6 <br /> <br /> <br />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 0.7 <br />feet. Data for this well and other wells are shown in Appendix C. <br /> <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 /> <br />Well 32-7U remains dry following longwall subsidence in mining near the hole in <br />1999/2000 and subsiding it in 2001. <br /> <br />The water level in 33-8U, experienced a slight rise in water level of 0.6 feet, within the <br />normally expected range of fluctuation. <br /> <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 /> <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 ranged from 150 ml/minute in 2010 to 13.2 ml/minute in 2012. The artesian <br />flow has stopped and the water level dropped to 32.4 feet, 8.3 feet lower than last year. <br /> <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 6.3 feet since the last monitoring period. <br />This rise may be associated with the long term rising waterline within the D-seam <br />workings. <br /> <br />Monitoring Hole 29-4M was plugged in November 2012 to eliminate connection with the <br />sealed off portion of the mine. <br /> <br />The water level in Hole 30-8M was confirmed dry at 464.5 feet. This is the same <br />elevation as last year. This well is located in a pillar next to the start line for LWB-8. This
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