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West Elk Mine 2004 Annual Hydrology Report <br />Table 1 <br />Monitoring Frequencies (1) <br />Routine Monitoring Baseline Monitoring <br /> <br />Month Flow / <br />Level Field <br />Parameters Laboratory <br />Aealysis (2) <br /> January <br /> Febmary <br /> March <br />Rising Limb -April 3 to May 13 April X X <br />Peak Flow -April 21 to June 26 May X X <br />Low Flow -July 10 to October 8 June X X <br /> July X X <br /> August X X <br /> September X X <br /> October X X <br /> November <br /> December <br />(1) Per discussion with J. Burnell, CDMG, 2005 <br />(2) Site Specific Schedule <br />3.1 Surface Water Monitoring <br />7 <br />• The West Elk Mine is drained to the north by the North Fork of the Gunnison River, to the south by <br />Minnesota Creek, to the west by Gribble Gulch, and to the east by Deep Creek. The surface water <br />monitoring system for the Project includes 17 stream stations, comprised of 10 sites with <br />continuous recording devices and 7 sites with instantaneous flow measuring devices. The surface <br />water monitoring system for WY 2004 remains the same as in WY 2003 and is divided into three <br />general hydrologic areas for discussion purposes: <br />• Stations in the Upper North Fork Drainage Basin. <br />• Stations in the Lower North Fork Drainage Basin. <br />• Stations in the Minnesota Creek Drainage Basin. <br />The locations of the monitoring stations are shown on Map 2. The following discussion of surface <br />water stations on the major drainages and tributaries to these drainages is presented from upstream <br />to downstream areas with regard to the Project. A summary of the surface water monitoring <br />program is presented in Table 2 and a discussion of WY 2004 hydrologic data is presented in <br />Section 5.1 of this report. <br /> <br />Augur[ 2005 HydroGeo, Inc. <br />