Laserfiche WebLink
have been mined in the A, B, G and Z pits, currently the A and G pits mine the H coal seam . <br />while the Z pit mines the I seam. H pit mined the G seam. The 3rd White Sandstone (G <br />coal and sandstone below) and 2nd White Sandstone (F coal and sandstone below) are <br />monitored at seven locations. The Lewis Shale is monitored at one loption. The Johnson <br />and Pyeatt Gulch alluvial aquifers are mon'~tored at one site in each of these drainages while <br />the Flume Gutch alluvium is monitored at two locations. The 2002 hydrologic monitoring <br />report, Hydro-Engineering, LLC (2003), presens the discussion of the monitoring results <br />through 2002. The table on the pull-out index provides basic well data for all wells <br />monitored in 2003. <br />Springs at Trepper Mine were monitored during 2003 in accordance with the <br />approved monitoring plan. Springs with measured flows of greater than 5 gpm were <br />sampled for full suite water quality parameters. Results of the 2003 spring mon"storing are . <br />presented in Table B-2 in Appendix B. <br />Table 1-1 (page 1-4) presents the pit and well dewatering data and volume of <br />water used for dust depressi~ for Trapper Mine for 2003. This data shows that, on an <br />average, approximately 14.4 gpm was pumped from the Trapper Mine p'ds during 2003. <br />Well dewatering was started in September of 2002 in the G pit. The average pit pumping <br />rate was 19.5 gpm for the G pit well dewatering. This data is useful in interpreting <br />water-level changes and consumptive use. <br />Surface-water flow and quality were monitored at only Flume Gulch (S-1), <br />Johnson, No Name, East Pyeatt, Middle Fiume and East Middle Flume drainages during <br />2003. The Johnson, No Name, East Buaard, Coyote, West Buaard, Ute, Middle Pyeatt, <br />Elk, East Pyeatt, Deer, West Pyeatt, Far East Buaard, Grouse, Sage, Oak, Horse, West <br />1-z <br />