2009-12-21_REVISION - M1980244 ‎(40)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 12/21/2009
• Doc Name: QA Liner Recert- App.A, Phase IVc Cert. Doc.
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

October 2004 4- 043 -2170
TABLE OF CONTENTS
0
1.0 INTRODUCTION ............................................................................... ............................... l
1.1 Project Description ................................................................................ ..............................1
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 Construction 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 SUMMARY 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 .......................................................................................... .............................
2.3 Leak Detection System ........................................................................ .............................
2.4 Site Grading ......................................................................................... .............................
2.5 Subgrade Preparation ........................................................................... .............................
2.6 Soil Liner Fill ....................................................................................... .............................
10 2.7 Ore Storage Area Composite Liner System ......................................... .............................12
2.8 High Volume Solution Collection System ........................................... .............................13
2.9 Drain Cover Fill ................................................................................... .............................
2.10 Surface Water Diversion System ......................................................... .............................
3.0
GEOSYNTHETICS INSTALLATION .............................................
.............................15
3.1
Underdrains ..........................................................................................
.............................
3.2
Leak Detection Trench .........................................................................
.............................
3.3
Ore Storage Area ..................................................................................
.............................
3.4
Underground Workings ........................................................................
.............................
4.0
EARTHWORK CQA TESTING AND MONITORING ................ ............................... 17
4.1
Results of Laboratory Soils Testing ..................................................... .............................17
4.1.1 Grain Size Distribution ................................................................. .............................
4 .1.2 Moisture Content ...........................................................................
.............................
4.1.3 Atterberg Limits
....... .............................19
4.1.4 Proctor Compaction Tests .............................................................
.............................
4.1.5 Permeability Tests .........................................................................
.............................
4.1.6 Bulk Specific Gravity ....................................................................
.............................
4.2
Field Testing and Monitoring ..............................................................
..... .................... ....21
4.2.1 Underground Workings .................................................................
.............................21
4.2.1.1 Concrete Plug and Cemented Rockfill ................................
.............................21
4.2.1.2 Geogrid and Select Structural Fill .......................................
.............................22
4.2.2 Underdrains ...................................................................................
.............................22
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