2011-08-26_REPORT - M1980244 ‎(28)‎

• Permit No: M1980244
• IBM Index Class Name: Report
• Doc Date: 8/26/2011
• Doc Name: Final Report QA 2011 Phase 5 VLF Ore Storage Aug 26, 2011 vol 1 of 3
• From: CC&V
• To: DRMS
• Media Type: D
• Archive: No

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TABLE OF CONTENTS
1.0
INTRODUCTION
1
1.1
Project Description .................................................................. ..............................1
1.2
Construction Quality Assurance /Construction 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 ............................................... ..............................6
1.6
Certification Boundary ............................................................. ..............................6
2.0
SUMMARY OF EARTHWORK CONSTRUCTION
7
2.1
Underground Workings Remediation ..................................... ...............................
8
2.2
Site Grading ........................................................................... ...............................
9
2.3
Leak Detection System .......................................................... ...............................
9
2.4
Subgrade Preparation ............................................................ .............................10
2.5
Soil Liner Fill ......................................................................... ...............................
10
2.6
2011 Phase 5 VLF OSA 2nd Portion Composite Liner System ...........................11
2.7
High Volume Solution Collection System ............................. ...............................
12
2.8
Drain Cover Fill ..................................................................... ...............................
12
3.0
GEOSYNTHETICS INSTALLATION
14
3.1
2011 Phase 5 VLF OSA 2nd Portion Liner System ............... ...............................
14
3.2
Leak Detection Trench ........................................................... .............................14
4.0
EARTHWORK CQA TESTING AND MONITORING
16
4.1
Results of Laboratory Soils Testing ........................................ .............................16
4.1.1 Grain Size Distribution .................................................... .............................17
4.1.2 Moisture Content .......................................................... ...............................
18
4.1.3 Atterberg Limits ............................................................. ...............................
18
4.1.4 Proctor Compaction Tests ............................................ ...............................
19
4.1.5 Permeability Tests ........................................................ ...............................
20
4.2
Field Testing and Monitoring ................................................ ...............................
20
4.2.1 Subgrade Preparation ..................................................... .............................20
4.2.2 Site Grading .................................................................... .............................21
4.2.3 Soil Liner Fill ................................................................. ...............................
21
4.2.3.1 Field Monitoring .................................................... ...............................
21
4.2.3.2 Moisture - Density Test Results .............................. ...............................
22
4.2.3.3 Depth Verification .................................................. ...............................
22
4.2.4 Drain Cover Fill ............................................................. ...............................
22
4.2.5 Temperature Monitoring ............................................... ...............................
23
5.0
GEOSYNTHETICS QC SUBMITTALS 24
5.1
Geomembrane Installation Personnel Resumes .................... .............................24
5.2
Geomembrane QC Documents ............................................ ...............................
24
AMEC Earth & Environmental, Inc.
2000 S. Colorado Blvd 2 -1000
Denver, CO 80222
Tel 303 - 935 -6505
Fax 303 - 935 -6575 www amec.com ii