2004-10-18_REVISION - M1980244 ‎(25)‎

• Permit No: M1980244
• IBM Index Class Name: Revision
• Doc Date: 10/18/2004
• Doc Name: Phase IVc Ore Storage Area Liner Certification Report
• From: Anglo Gold
• To: DMG
• Type & Sequence: AM8
• Media Type: D
• Archive: No

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October 2004 -i- 043-2170
TABLE OF CONTENTS
1.0 INTRODUCTION ...............................................................................:........ ......................1
1.1 Project Description ....................................................................................... ....................... l
1.2 Construction Quality Assurance/Quality Control ........................................ .......................2
1.2.1 CQA Monitoring of Earthworks ............................................................ .......................2
1.2.2 CQA/CQC Monitoring of Geosynthetics Installation ........................... .......................3
1.3 Project Coordination .................................................................................... .......................4
1.3.1 Daily COIlStrUCtlOn Summary Reports ................................................... .......................4
1.3.2 Weekly Construction Summary Reports ............................................... .......................5
1.4 Project Specifications ................................................................................... .......................5
1.5 Record Survey Documentation .................................................................... ....................... 5
1.6 Certification Boundary ................................................................................. .......................6
2.0 SIJMMARY OF EARTHWORK CONSTRUCTION ............................... ......................7
2.1 Underground Workings Remediation .......................................................... ....................... 8
2.1.1 Remediation of Shafts, Stopes, and Shallow Surface Pits ..................... ..................:...8
2.1.2 Remediation of Laterals/Inclines/Adits ................................................. .....................10
2.2 Underdrains .................................................................................................. .....................10
2.3 Leak Detection System ................................................................................ .....................10
2.4 Site Grading ................................................................................................. .....................11
2.5 Subgrade Prepazation ................................................................................... .....................11
2.6 Soil Liner'Fill ............................................................................................... ..................... l l
2.7 Ore Storage Area Composite Liner System ................................................. .....................12
2.8 High Volume Solution Collection System ................................................... .....................13
2.9 Drain Cover Fill ........................................................................................... .....................13
2.10 Surface Water Diversion System ................................................................. .....................14
3.0 GEOSYNTHETICS INSTALLATION...
3.1 Underdrains ............................................
3.2 Leak Detection Trench ...........................
3.3 Ore Storage Area ....................................
3.4 Underground Workings ..........................
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4.0 EARTHWORK CQA TESTING AND MONITORING
4.1 Results of Laboratory Soils Testing ................................
4.1.1 Grain Size Distribution .............................................
4.1.2 Moisture Content ......................................................
4.1.3 Atterberg Limits ........................................................
4.1.4 Proctor Compaction Tests .........................................
4.1.5 Permeability Tests ....................................................
4.1.6 Bulk Specific Gravity ...............................................
4.2 Field Testing and Monitoring .........................................
4.2.1 Underground Workings ............................................
4.2.1.1 Concrete Plug and Cemented Rockfill...........,
4.2.1.2 Geogrid and Select Structural Fill ...................
4.2.2 Underdrains ..............................................................
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