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Plan of Operations for Surface Disturbing Baseline Studies Mount Emmons Project Colorado, Usa

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Plan of Operations for Surface Disturbing Baseline Studies Mount Emmons Project Colorado, Usa PLAN OF OPERATIONS FOR SURFACE DISTURBING BASELINE STUDIES MOUNT EMMONS PROJECT COLORADO, USA U.S. Energy Corp. P.O. Box 629 Gunnison, Colorado 81230 Distribution: 2 Copies and one electronic copy – United States Forest Service, Gunnison, CO 1 Copy and one electronic copy – Bureau of Land Management, Gunnison, CO March 31, 2010 Compilation December 7, 2010 TABLE OF CONTENTS 1.0 INTRODUCTION ............................................................................................................................ 1 1.1 Background ......................................................................................................................... 1 1.2 The Plan of Operations ........................................................................................................ 2 1.3 Potential Mine Operations. ................................................................................................. 3 1.4 Timeline .............................................................................................................................. 5 2.0 OWNER-OPERATOR AND LOCATION INFORMATION .......................................................... 6 3.0 DEVELOPMENT ACTIVITIES ...................................................................................................... 6 3.1 Geotechnical Baseline Study ............................................................................................... 7 3.1.1. Geotechnical Site Investigations ................................................................................ 7 3.1.2. Work Planned at the Points of Diversion and Storage Areas ...................................... 12 3.2 Surface Water Baseline Study ........................................................................................... 13 3.2.1. Streamflow Measurements ....................................................................................... 13 3.2.2. Water Quality Measurements ................................................................................... 13 3.3 Groundwater Baseline Study ............................................................................................. 14 3.3.1. Possible Surface Disturbance and Mitigation Measures ............................................. 14 3.3.2. Site Restoration ............................................................................................................. 15 3.4 Structures ................................................................................................................................ 15 3.5 Materials .................................................................................................................................. 15 3.6 Water Use .......................................................................................................................... 16 3.7 Solid Waste ....................................................................................................................... 16 3.8 Mobile Equipment and Workforce .................................................................................... 17 3.9 Permits and Approvals ............................................................................................................ 17 3.10 Surface Disturbance ........................................................................................................... 18 4.0 SITE CONDITIONS ...................................................................................................................... 19 4.1 Geology ............................................................................................................................. 19 4.1.1. Geology/Seismicity .................................................................................................. 19 4.1.2. Topography and Physiography ................................................................................ 20 4.1.3. Measures to Protect Scenic Values .......................................................................... 21 4.2 Land Use ........................................................................................................................... 21 4.3 Cultural Resources ............................................................................................................. 22 4.3.1. Measures to Protect Cultural Resources ................................................................... 22 4.4 Climate .............................................................................................................................. 22 4.5 Air Quality ........................................................................................................................ 23 ii 4.5.1. Measures to Protect Air Quality ............................................................................... 24 4.6 Water ................................................................................................................................. 25 4.6.1. Surface Water Hydrology ........................................................................................ 25 4.6.1.1 Carbon Creek Area .................................................................................. 26 4.6.2. Surface Water Quality .............................................................................................. 26 4.6.2.1 Carbon Creek Area .................................................................................. 27 4.6.3. Groundwater Hydrogeology .................................................................................... 27 4.6.3.1 Mount Emmons Area ............................................................................... 27 4.6.3.2 Carbon Creek Area .................................................................................. 29 4.6.4. Methods to Minimize Impacts to Water Quality ...................................................... 30 4.7 Soils ................................................................................................................................... 30 4.7.1. Methods to Minimize Impacts to Soils ..................................................................... 31 4.8 Vegetation ......................................................................................................................... 31 4.8.1. Sensitive Areas ........................................................................................................ 32 4.8.2. Threatened and Endangered and USFS Sensitive Species ........................................ 33 4.8.3. Methods to Minimize Impacts to Plants ................................................................... 34 4.9 Wildlife ............................................................................................................................. 34 4.9.1. Threatened and Endangered and USFS Sensitive Species ........................................ 35 4.9.2. Methods to Minimize Impacts to Wildlife................................................................ 36 4.10 Noise ................................................................................................................................. 36 5.0 ACCESS ROUTES ........................................................................................................................ 37 6.0 RECLAMATION ........................................................................................................................... 37 6.1 Slash Clearing ................................................................................................................... 37 6.2 Drill and Test Pit Pads ....................................................................................................... 38 6.3 Drill Hole Abandonment ................................................................................................... 38 6.4 Revegetation ...................................................................................................................... 38 6.4.1. Topsoil Application ................................................................................................. 38 6.4.2. Species Selection ..................................................................................................... 39 6.4.3. Seeding and Planting ............................................................................................... 40 6.5 Noxious Weed Control ...................................................................................................... 40 7.0 REFERENCES ............................................................................................................................... 40 iii LIST OF FIGURES Figure 2-1 Site Map Figure 2-2 Project Area U.S. Energy Claims Figure 3-1 Photo of Typical Excavator Figure 3-2 Surface Water Monitoring Locations and Access Routes Figure 4-1 Parcel Ownership Figure 5-1 Access to Geotechnical Investigation Locations LIST OF DRAWINGS Drawing No. 1a Mt. Emmons Project General Arrangement and Index Drawing No. 1b Mt. Emmons Project General Arrangement Topo Drawing No. 2 Mt. Emmons Project Potential Paste Plant Site Drawing No. 3 Mt. Emmons Project Reservoir No. 1 Drawing No. 4 Mt. Emmons Project Potential Mill Site No. 1, Water Treatment Plant No. 2 Drawing No. 5 Mt. Emmons Project Potential Mine Portal Drawing No. 6 Mt. Emmons Project Potential Mill Site No. 2 Drawing No. 7 Mt. Emmons Project Potential Tailing Facility No.1, Reservoir No. 2 Drawing No. 8 Mt. Emmons Project Potential Tailing Facility No. 2 Drawing No. 9 Mt. Emmons Project Reservoir 3 Drawing No. 10 Mt. Emmons Project Potential
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