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West Elk Mine 2008 Annual Hydrology Report <br />• MOUNTAIN COAL COMPANY, LLC <br />WEST ELK MINE <br />WATER YEAR 2008 (WY 2008) ANNUAL HYDROLOGY REPORT <br />TABLE OF CONTENTS <br />1.0 INTRODUCTION .....................................................................................................................1 <br />1.1 Overview of Mining Operations ............................................................................1 <br />2.0 HYDROLOGIC SUMMARY OF WATER YEAR 2008 .........................................................1 <br />2.1 Climatological Data ...............................................................................................1 <br />2.2 Stream Flow Data .................................................................................................. 5 <br />2.2.1 Flows in the North Fork of the Gunnison River ....................................... 5 <br />2.2.2 Flows in Minnesota Creek near Paonia, CO ............................................. 5 <br />3.0 HYDROLOGIC MONITORING PLAN ...................................................................................7 <br />• 3.1 Surface Water Monitoring Program ..................................................................... 10 <br />3.1.1 Upper North Fork Drainage Basin Surface Water Monitoring Stations. 12 <br />3.1.1.1 Deep Creek (Upper, Lower) ...................................................... 12 <br />3.1.1.2 Raven Gulch (Upper, Lower) .................................................... 12 <br />3.1.1.3 Box Canyon ............................................................................... 12 <br />3.1.1.4 North Fork Upper ....................................................................... 12 <br />3.1.1.5 Sylvester Gulch (Upper, Middle, Lower) .................................. 13 <br />3.1.2 Lower North Fork Drainage Basin Surface Water Monitoring Stations. 13 <br />3.1.2.1 North Fork Lower ...................................................................... 13 <br />3.1.2.2 Lower Gribble Gulch ................................................................. 13 <br />3.1.3 Minnesota Creek Drainage Basin Surface Water Monitoring Stations.. 13 <br />3.1.3.1 Lick Creek Flume ...................................................................... 13 <br />3.1.3.2 Dry Fork Flumes (Upper, Middle, and Lower) .......................... 14 <br />3.1.3.3 Poison Gulch .............................................................................. 14 <br />3.1.3.4 Deer Creek ................................................................................. 14 <br />3.1.3.5 Horse Gulch and East Gulch, East of Horse Gulch ................... 15 <br />• <br />3.1.3.6 Minnesota Creek (Upper, Lower) .............................................. 15 <br />June 2009 HydroGeo, Inc.