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Cripple Creek&Victor Gold Mining Company <br /> Squaw Gulch VLF Phase 2A Part 1 ■ <br /> Record of Construction Report <br /> 475.0106.032 <br /> July 22,2019 <br /> TABLE OF CONTENTS <br /> 1. INTRODUCTION........................................................................................................................ 1 <br /> 1.1. Project Description........................................................................................................... 1 <br /> 1.2. Parties Involved................................................................................................................ 2 <br /> 1.3. Construction Quality Assurance (CQA)/Construction Quality Control (CQC) ................ 3 <br /> 1.4. Design Drawings and Technical Specifications................................................................. 3 <br /> 1.5. Use of this Report............................................................................................................. 3 <br /> 2. SQUAW GULCH VLF CONSTRUCTION ACTIVITIES.................................................................... 4 <br /> 2.1. Clearing and Grubbing. .................................................................................................... 2 <br /> 2.2. Underground Working Remediation................................................................................ 2 <br /> 2.2.1. Confirmatory Drilling.......................................................................................... 2 <br /> 2.2.2. Blasting ............................................................................................................... 4 <br /> 2.2.3. Remediation of Open Shafts and Stopes............................................................4 <br /> 2.2.4. Remediation of Collapsed Shafts and Stopes.....................................................4 <br /> 2.2.5. Remediation of Laterals......................................................................................4 <br /> 2.2.6. Remediation of Shallow Workings ..................................................................... 5 <br /> 2.3. Secondary Underdrains.................................................................................................... 5 <br /> 2.4. Site Grading...................................................................................................................... 5 <br /> 2.5. Subgrade Preparation ...................................................................................................... 5 <br /> 2.6. Leak Detection Trench ..................................................................................................... 6 <br /> 2.7. Soil Liner Fill................................................................................................................:. 7 <br /> 2.8. Geomembrane ................................................................................................................. 7 <br /> 2.9. Anchor Trench.................................................................................................................. 8 <br /> 2.10. High Volume Solution Collection System (HVSCS) Piping............................................. 8 <br /> 2.11. Drain Cover Fill .............................................................................................................. 8 <br /> 3. QUALITY ASSURANCE/QUALITY CONTROL.............................................................................. 9 <br /> 3.1. Testing Standards............................................................................................................. 9 <br /> 3.1.1. Earthworks Testing Standards............................................................................ 9 <br /> 3.1.2. Geomembrane Testing Standards.................................................................... 10 <br /> 3.1.3. Geotextile Testing Standards............................................................................ 10 <br /> 3.1.4. Geogrid Testing Standards ............................................................................... 10 <br /> 3.2. Earthworks Construction Quality Assurance ................................................................. 10 <br /> 3.2.1. Coarse Shaft Backfill ......................................................................................... 11 <br /> 3.2.2. Underdrain Fill .................................................................................................. 11 <br /> 3.2.3. Select Structural Fill.......................................................................................... 11 <br /> 3.2.4. Structural Fill..................................................................................................... 11 <br /> 3.2.5. Leak Detection Fill ............................................................................................ 12 <br /> 3.2.6. Soil Liner Fill...................................................................................................... 12 <br /> 3.2.7. Drain Cover Fill.................................................................................................. 12 <br /> 3.3. Concrete and Cemented Rockfill Quality Assurance...................................................... 12 <br /> 3.4. Geosynthetics Quality Control Submittals..................................................................... 13 <br /> P.\Projects\0106.032 VLF2 Phase 2 CCJA\J-REPORTS\ROC Report 1\Cert Report-Phase 2A Part 1\475.0106.032 CCV PHASE 2A Part 1 <br /> ROC REPORT.docx <br />