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2008-03-14_REPORT - C1981010 (5)
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2008-03-14_REPORT - C1981010 (5)
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Last modified
8/24/2016 3:25:13 PM
Creation date
3/14/2008 1:03:23 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
REPORT
Doc Date
3/14/2008
Doc Name
2007 Annual Hydrology Report to Appendix A
From
Trapper Mining Inc
To
DRMS
Annual Report Year
2007
Permit Index Doc Type
Hydrology Report
Email Name
DIH
Media Type
D
Archive
No
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currently the A and G pit mines the H coal seam while the F and Z pits mine the I seam. H pit <br />mined the G seam. The 3rd White Sandstone (G coal and sandstone below) and 2nd White <br />Sandstone (F coal and sandstone below) are monitored at four locations. The Lewis Shale is <br />monitored at one location. The Johnson and Pyeatt Gulch alluvial aquifers are monitored at one <br />site in each of these drainages while the Flume Gulch alluvium is monitored at two locations. The <br />2006 hydrologic monitoring report, Hydro-Engineering, LLC (2007), presents the discussion of the <br />monitoring results through 2006. The table on the pull-out index provides basic well data for all <br />wells monitored in 2007. Wells 81-03A, GE-l, GE-2, GE-3, GLUX-1 and GP-6 were not required <br />to be monitored after the first half of 2006. <br />Springs at Trapper Mine were monitored during 2007 in accordance with the approved <br />monitoring plan. Springs with measured flows of greater than 5 gpm were sampled for full suite <br />water quality parameters. Results of the 2007 spring monitoring aze presented in Table B-2 in <br />Appendix B. <br />Table 1-1 (page 1-4) presents the pit and well dewatering data and volume of water used <br />for dust depression for Trapper Mine for 2007. This data shows that, on an average, approximately <br />21.4 gpm was pumped from the Trapper Mine pits during 2007. Well dewatering was started in <br />September of 2002 in the G pit. The average well pumping rate for 2007 was 27.8 gpm for the G <br />pit well dewatering. This data is useful in interpreting water-level changes and consumptive use. <br />Surface-water flow and quality were monitored at only Flume Gulch (S-1), Johnson, No <br />Name, East Pyeatt, West Pyeatt, Oak, Middle Flume and East Middle Flume drainages during <br />2007. The Johnson, No Name, Coyote, Ute, Middle Pyeatt, East Pyeatt, Deer, West Pyeatt, Far <br />East Buzzard, Grouse, Sage, Oak, Horse, West Flume, Middle Flume, East Middle Flume, Deal <br />Gulch, East Flume and West Horse Gulch drainages are Trapper's NPDES discharge sites 001, 002, <br />Trapper Mining Company 1-2 <br />2007 Annual Report <br />
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