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pit previously mined the Q and R seams and the I and I1 seams. H pit mined the G seam. The 3rd
<br />White Sandstone (G coal and sandstone below) and 2nd White Sandstone (F coal and sandstone
<br />below) are monitored at four locations. The Lewis Shale is monitored at one location. The Johnson
<br />and Pyeatt Gulch alluvial aquifers are monitored at one site in each of these drainages while the
<br />Flume Gulch alluvium is monitored at two locations. The 2011 hydrologic monitoring report,
<br />Hydro - Engineering, LLC (2012), presents the discussion of the monitoring results through 2011. The
<br />table on the pull -out index provides basic well data for all wells monitored in 2012. Wells 81 -03A,
<br />GE -1, GE -2, GE -3, GLUX -1 and GP -6 were not required to be monitored after the first half of 2006.
<br />Springs at Trapper Mine were monitored during 2012 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 2012 spring monitoring are 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 suppression for Trapper Mine for 2012. This data shows that, on an average, approximately
<br />31.4 gpm was pumped from the Trapper Mine pits during 2012. Well dewatering was started in
<br />September of 2002 in the G pit. The average well pumping rate for 2012 was 30.8 gpm for the G pit
<br />well dewatering This data is useful in interpreting water -level changes and consumptive use.
<br />Surface -water flow and quality were monitored at Flume Gulch (S -1), Johnson, No Name,
<br />Middle Pyeatt, East Pyeatt, West Pyeatt, Oak, Horse, Middle Flume, East Middle Flume, Deal Gulch
<br />and West Horse Gulch drainages during 2012. The Johnson, No Name, Coyote, Ute, Middle Pyeatt,
<br />East Pyeatt, Deer, West Pyeatt, Far East Buzzard, Grouse, Sage, Oak, Horse, West Flume, Middle
<br />Flume, East Middle Flume, Deal Gulch, East Flume and West Horse Gulch drainages are Trapper's
<br />NPDES discharge sites 001, 002, 005, 008, 009, 011, 012, 013, 014, 015, 016, 017, 018, 019, 020,
<br />Trapper Mining Company 1 -2
<br />2012 Annual Report
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