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~~.n <br />SMITH WILLIAMS CONSULTANTS, INC. <br />• <br />Cripple Creek & Victor Gold Mining Company <br />Cresson Project <br />Valley Leach Facility <br />Phase 5 Extension Design <br />Table of Contents <br /> List of Tables ...............................................................................................:................................. iv <br /> List of Figures ................................................................................................................................ iv <br /> List of Drawings ............................................:...............:............................................................... . v <br /> List of Appendices ........................................................................................................................ vii <br /> Executive Summary ....................................................................................................................... . 1 <br /> 1.0 Introduction .............................................................................................................................. . 3 <br /> 1.1 Project Description .......................................................................:................:.............. . 5 <br /> 1.2 Scope of Work ............................................................................................................. . 7 <br /> 1.2.1 VLF Design History . 8 <br />• 9 <br /> ....................................................:................................. <br />1.3 Design Criteria ............. • <br /> 1.3.1 Valley Leach Facility (VLF) ......................................................................... . 9 <br /> 1.3.2 Surface-Water Diversion Channels .........................:.................................... 10 <br /> 1.3.3 Cresson Ore ............................................................:..................................... 10 <br /> 1.3.4 Water Balance .....................................................................................:........ 10 <br /> 1.3.5 Phase 5 VLF Liner Systems ......................................................................... 11 <br /> 1.3.6 Stability Analysis ...................:..................................................................... 11 <br /> 1.3.7 Solution Piping ............................................................................................. 12 <br /> 2.0 Site Description ....................................................................................................................... 13 <br /> 2.1 Location and Topography ...............................................................................:.:......... 13 <br /> 2:2 Climate.:.........: ............:..........:...............................................:......:......................:...... 13 <br /> - 2.3 Geology ......:.......................:........................................................................................ 14 <br /> 2.4 Underground Workings .............................................................................................. 14 <br /> 2.5 Seismicity .........................:...........:............................:...............................................:. 16 <br /> 3:0 Site Subsurface Conditions :.......................:......:.........................................................:........... 17 <br />~- 3.1 Previous Site Investigations ........................................................................................ 17 <br />S:\PROJECTS\1125 CCBV PHASE 5 VLF\H2 - DESIGNWREQUA VLF\VLF PHASE 5 FINAL REPORT V2.DOC i <br />