2010-06-30_REPORT - C1980007 ‎(5)‎

• Permit No: C1980007
• IBM Index Class Name: REPORT
• Doc Date: 6/30/2010
• Doc Name: 2009 Annual Hydrology Report
• From: HydroGeo, Inc
• To: DRMS
• Annual Report Year: 2009
• Permit Index Doc Type: Hydrology Report
• Email Name: TAK
• Media Type: D
• Archive: No

•
West Elk Mine 2009 Annual Hydrology Report i
MOUNTAIN COAL COMPANY, LLC
WEST ELK MINE
WATER YEAR 2009 (WY 2009) ANNUAL HYDROLOGY REPORT
TABLE OF CONTENTS
1.0 INTRODUCTION ..................................................................................................................... 1
1.1 Overview of Mining Operations ............................................................................ 1
2.0 HYDROLOGIC SUMMARY OF WATER YEAR 2009 ......................................................... 1
2.1 Climatological Data ............................................................................................... 1
2.2 Stream Flow Data .................................................................................................. 5
2.2.1 Flows in the North Fork of the Gunnison River ....................................... 5
2.2.1 Flows in Minnesota Creek near Paonia, CO ............................................. 6
3.0 HYDROLOGIC MONITORING PLAN .................................................................................. 7
• 3.1 Surface Water Monitoring Program .................................................................... 10
3.1.1 Upper North Fork Drainage Basin Surface Water Monitoring Stations. 12
3.1.1.1 Deep Creek (Upper, Lower) ...................................................... 12
3.1.1.2 Raven Gulch (Upper, Lower) .................................................... 12
3.1.1.3 Box Canyon ............................................................................... 12
3.1.1.4 North Fork Upper ...................................................................... 12
3.1.1.5 Sylvester Gulch (Upper, Middle, Lower) .................................. 13
3.1.2 Lower North Fork Drainage Basin Surface Water Monitoring Stations 13
3.1.2.1 North Fork Lower ...................................................................... 13
3.1.2.2 Lower Gribble Gulch ................................................................. 13
3.1.3 Minnesota Creek Drainage Basin Surface Water Monitoring Stations.. 13
3.1.3.1 Lick Creek Flume ...................................................................... 13
3.1.3.2 Dry Fork Flumes (Upper, Middle, and Lower) ......................... 13
3.1.3.3 Poison Gulch ............................................................................. 14
3.1.3.4 Deer Creek ................................................................................. 14
3.1.3.5 Horse Gulch and East Gulch, East of Horse Gulch ................... 14
3.1.3.6 Minnesota Creek (Upper, Lower) .............................................. 15
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June 2010 HydroGeo, Inc.