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<br />West Elk Mine 2003 Annual Hydrology Report <br />WEST ELK MINE <br />2003 ANNUAL HYDROLOGY REPORT <br />MOUNTAIN COAL COMPANY, LLC <br />TABLE OF CONTENTS <br />1.0 INTRODUCTION ....................................................................................... <br />1.1 Overview of Mining Operations .............................................. <br />1 <br />............................................1 <br />i <br />2.0 HYDROLOGIC SUMMARY OF 2003 WATER YEAR .........................................................................1 <br />2.1 Climatological Data ...............................................................................................................1 <br />2.2 Stream Flow Data ..................................................................................................................4 <br />C~ <br /> <br />3.0 HYDROLOGIC MONITORING <br />.....6 <br />3.1 Surface Water Monitoring .................................................................................. ...................7 <br />3.1.1 Upper North Fork Surface Water Monitoring Stations .......................... ...................9 <br />3.1.1.1 Deep Creek ............................................................................... ...................9 <br />3.1.1.2 Box Canyon .............................................................................. ...................9 <br />3.1.1.3 North Fork Upper ...................................................................... ...................9 <br />3.1.1.4 Sylvester Gulch ......................................................................... ...................9 <br />3.1.2 Lower North Fork Surface Monitoring Stations .................................... ...................9 <br />3.1.2.1 North Fork Lower ..................................................................... ...................9 <br />3.1.2.2 Lower Gribble Gulch ................................................................ .................10 <br />3.1.3 Minnesota Creek .................................................................................... .................10 <br />3.1.3.1 Lick Creek Flume ..................................................................... .................10 <br />3.1.3.2 Dry Fork .................................................................................... .................10 <br />3.1.3.3 Horse Gulch and East Gulch, East of Horse Gulch .................. .................10 <br />3.1.3.4 Upper and Lower Minnesota Creek .......................................... .................10 <br />3.2 Spring and Seep Monitoring ................................................................................ ................11 <br />3.2.1 Springs above the F seam in the North Fork Drainage Basin ................. ................12 <br />3.2.1.1 Spring 24-3 ................................................................................ ................12 <br />3.2.1.2 Spring26-1 ................................................................................. ................13 <br />3.2.1.3 E14-1 ......................................................................................... .................13 <br />September 2004 <br />HydroGeo, Inc. <br />