2010-08-17_REVISION - M1980244

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 8/17/2010
• Doc Name: QA Monitoring & Test Results- Phase IV B/C Triangle Liner Cert.- Cover to Append. C, Weekly Rpts.
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Email Name: BMK
• Media Type: D
• Archive: No

Cripple Creek & Victor Gold Mining Company
Cresson Project
Quality Assurance Monitoring and Test Results
Phase 4B/C Triangle Liner Certification
August 10, 2010
Table of Contents
List of Tables ............................................
List of Figures... .........................................
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List of Appendices .......................................................................................... ...........................................ui
1.0 INTRODUCTION ......................................................................................... ............................................1
1.1 Project Description ......................................................................... ............................................1
1.2 Construction Quality Assurance/Quality Control ............................ ............................................1
1.2.1 CQA Monitoring of Earthworks ....................................... ............................................1
1.3 Project Coordination ....................................................................... ............................................3
1.3.1 Daily Construction Summary Reports ............................ ............................................3
1.3.2 Weekly Construction Summary Reports ....................... .............................................3
1.3.3 Project Specifications .................................................... .............................................3
1.4 Certification Boundary ................................................................... .............................................4
2.0 SUMMARY OF EARTHWORK CONSTRUCTION .................................... .............................................5
2.1 Subgrade Preparation ................................................................... .............................................5
2.2 Soil Liner Fill .................................................................................. .............................................5
2.3 Geomembrane Liner ..................................................................... .............................................6
2.4 Drain Cover Fill .............................................................................. .............................................7
3.0 GEOSYNTHETICS INSTALLATION ......................................................... .............................................8
4.0 EARTHWORK CQA TESTING AND MONITORING ..............................................................................9
4.1 Results of Laboratory Soils Testing 9
4.1.1 Grain Size Distribution ................................................... ...........................................10
4.1.2 Moisture Content ........................................................... ...........................................10
4.1.3 Atterberg Limits ............................................................ ............................................10
4.1.4 Proctor Compaction Tests ............................................ ............................................10
4.1.5 Permeability Tests ........................................................ ............................................11
4.2 Field Testing and Monitoring 11
4.2.1 Subgrade Preparation .................................................. ............................................11
4.2.2 Site Grading 11
4.2.3 Soil Liner Fill ................................................................. ............................................11
4.2.3.1 Field Monitoring ............................................ ............................................11
4.2.3.2 Moisture-Density Test Results ..................... ............................................12
4.2.3.3 Depth Verification ......................................... ............................................12
4.2.4 Drain Cover Fill ............................................................. ............................................12
4.2.5 Temperature Monitoring 12
S:\PROJECTS\1125E CCTV CQA\H2 - DESIGN\TRIANGLE\FINAL\TRIANGLE CERTIFICATION REPORT FINAL REV1.DOC