Laserfiche WebLink
WIN <br /> TABLE OF CONTENTS <br /> 1. INTRODUCTION........................................................................................................................ 1 <br /> 1.1. Project Description........................................................................................................... 1 <br /> 1.2. Scope of Work.................................................................................................................. 2 <br /> 2. SITE DESCRIPTION.................................................................................................................... 3 <br /> 2.1. Location and Topography................................................................................................. 3 <br /> 2.2. Climate ............................................................................................................................. 3 <br /> 2.3. Underground Workings.................................................................................................... 3 <br /> 2.4. Seismicity.......................................................................................................................... 4 <br /> 3. SITE SUBSURFACE CONDITIONS .............................................................................................. 4 <br /> 3.1. Site Investigation.............................................................................................................. 4 <br /> 3.2. Site Geotechnical Conditions........................................................................................... 5 <br /> 3.3. Laboratory Testing Program............................................................................................. 5 <br /> 4. VALLEY LEACH FACILITY DESIGN.............................................................................................. 6 <br /> 4.1. General............................................................................................................................. 6 <br /> 4.2. Staged Construction......................................................................................................... 7 <br /> 4.3. PSSA Embankment........................................................................................................... 8 <br /> 4.4. Valley Leach Facility Foundation...................................................................................... 8 <br /> 4.5. Liner System..................................................................................................................... 9 <br /> 4.5.1. Lined Pad Area................................................................................................... 9 <br /> 4.5.2. Pregnant Solution Storage Area 10 <br /> 4.6. Leak Detection System................................................................................................... 10 <br /> 4.7. Solution Collection System............................................................................................. 10 <br /> 4.7.1. High Volume Solution Collection System........................................................ 10 <br /> 4.7.2. Low Volume Solution Collection System......................................................... 11 <br /> 4.8. Appurtenant Structures ................................................................................................. 11 <br /> 4.9. Reclamation/Closure..................................................................................................... 12 <br /> 4.10. Technical Specifications .............................................................................................. 12 <br /> 5. GEOTECHNICAL EVALUATION................................................................................................ 13 <br /> 5.1. Stability Analyses............................................................................................................ 13 <br /> 5.1.1. General ............................................................................................................ 13 <br /> 5.1.2. Model Development........................................................................................ 14 <br /> 5.1.3. Material Properties ......................................................................................... 14 <br /> 5.1.4. Results ............................................................................................................. 16 <br /> 5.2. Settlement Evaluation.................................................................................................... 16 <br /> 5.2.1. General............................................................................................................ 16 <br /> 5.2.2. Back Analysis of Mill Platform Fill.................................................................... 17 <br /> 5.2.3. Model Development........................................................................................ 17 <br /> 5.2.4. Material Properties ......................................................................................... 18 <br /> 5.2.5. Schist Island Pit Sensitivity Analysis Results.................................................... 19 <br /> 5.2.6. Squaw Gulch Overburden Stockpile Area (SGOSA)Analysis Results.............. 20 <br /> 5.2.7. Conclusion ....................................................................................................... 20 <br /> 6. WATER BALANCE ................................................................................................................... 21 <br />