Laserfiche WebLink
TABLE OF CONTENTS <br />1.0 PROJECT DESCRIPTION .................................................................... ..............................1 <br />1.1 Project Background .................................................................... <br />..............................1 <br />1.2 Tailing Facility Design and Construction .................................. <br />..............................2 <br />1.3 Tailing Facility Operation .......................... <br />1.4 Existing Instrumentation and Monitoring Program ................... <br />..............................4 <br />2.0 INITIAL INSPECTION OBSERVATIONS ......................................... <br />..............................6 <br />2.1 Operational Status During Inspection ........................................ <br />..............................6 <br />3.0 STRUCTURAL STABILITY ................................................................ <br />..............................7 <br />3.1 Summary of Existing Data and Analysis ................................... <br />..............................7 <br />3. 1.1 Embankment Design ...................................................... <br />..............................7 <br />3.1.2 Results of Previous Studies ............................................ <br />..............................8 <br />3.1.3 Monitoring Data ............................................................ <br />.............................10 <br />3.2 Visual Assessment of Dam Stability ......................................... <br />.............................10 <br />3.2.1 Slumps, Cracking and Settlement ................................. <br />.............................11 <br />3.2.2 Erosion Gulley in Right Abutment Groin ..................... <br />.............................12 <br />3.2.3 Drain Outlets ................................................................. <br />.............................14 <br />3.2.4 Piezometers ................................................................... <br />.............................16 <br />3.3 Results of New Evaluations Performed as part of Detailed Inspection <br />Analysis..................................................................................... <br />.............................16 <br />3.3.1 Steady Seepage Analyses .............................................. <br />.............................16 <br />3.3.2 Static Stability ............................................................... <br />.............................18 <br />3.3.3 Stability under Flood Loading ...................................... <br />.............................18 <br />3.3.4 Stability under Earthquake Loading ............................. <br />.............................20 <br />4.0 HYDROLOGY/HYDRAULICS .......................................................... <br />.............................22 <br />4.1 Summary of Existing Data and Analysis .................................. <br />.............................22 <br />4. 1.1 Impoundment Elevation - Area - Volume ........................ <br />.............................22 <br />4.1.2 Drainage Area and Runoff Conditions ......................... <br />.............................24 <br />4.1.3 Existing Hydrologic/Hydraulic Design Data <br />................ .............................24 <br />4.1.4 Previous Design Analyses ............................................. <br />.............................25 <br />San Luis Project <br />Miller Geotechnical Consultants <br />Tailing Dam Data Report ii <br />February 2014 <br />