HDPE Geomembrane CQA - Construction Quality Assurance Plan

Title: HDPE Geomembrane CQA Plan
(Construction Quality Assurance)

This "CQA Plan" for HDPE geomembranes was originally prepared for those projects in which the project specifications were inadequate so therefore also includes project specifications. It will shortly be divided into separate project specifications and a CQA Plan. Note that the objective of CQA is to ensure that the liner is built according to the project specifications, with the best possible workmanship, and within the constraints of the budget and schedule. CQA does NOT ensure a perfect lining system. If the liner is poorly designed, CQA will ensure that that poorly designed liner is installed. CQA should contribute positively to the quality of the lining system, it should not be only a glorified data collection system. This CQA Plan is ready for immediate use. It just requires a few project specific details to be added. Text (that can be erased) provides some guidance on the project specific information required.

HDPE Geomembrane CQA (Construction Quality Assurance) Plan

Table of Contents

1. INTRODUCTION
2. DEFINITIONS RELATING TO CONSTRUCTION QUALITY ASSURANCE.
	2.1 Construction Quality Assurance and Construction Quality Control
	2.2 Use of the Terms in this Plan
3.PARTIES TO CONSTRUCTION QUALITY ASSURANCE
	3.1 Description of the Parties
		3.1.1 Owner
		3.1.2 Operator
		3.1.3 Project Manager
		3.1.4 Design Engineer (Engineer)
		3.1.5 General Contractor/Earthwork Contractor
		3.1.6 Resin Supplier
		3.1.7 Geomembrane Manufacturer (Manufacturer)
		3.1.8 Transporter
		3.1.9 Land Surveyor
		3.1.10 Geomembrane Installer (Installer)
		3.1.11 Construction Quality Assurance Consultant
		3.1.12 Construction Quality Assurance Laboratory
	3.2 Qualifications of the Parties
		3.2.1 Geomembrane Manufacturer
		3.2.2 Geomembrane Installer
		3.2.3 Transporter
		3.2.4 Construction Quality Assurance Consultant
		3.2.5 Construction Quality Assurance Laboratory
	3.3 Duties of Construction Quality Assurance Personnel
		3.3.1 CQA Manager
		3.3.2 CQA Site Superintendent0
4. COMMUNICATIONS
5. SCOPE OF CONSTRUCTION QUALITY ASSURANCE
6. UNITS
7. REFERENCES
8. PROJECT CONTROL: ACTIVITIES, SCHEDULE, AND PROBLEM SOLUTION
	8.1 Project Coordination Meetings
		8.1.1 Resolution Meeting
		8.1.2 Pre-Construction Meeting
		8.1.3 Progress Meetings
		8.1.4 Action Decision Meeting
	8.2 Project Control Visits
9. GEOMEMBRANE MANUFACTURING, TRANSPORTATION, AND STORAGE
	9.1 High Density Polyethylene Geomembrane Manufacturing
		9.1.1 Raw Material
	9.2 Geomembrane Plant Audit
		9.2.1 Scope
		9.2.2 Quality Control
		9.2.3 Manufacturing Process
	9.3 Manufacturing
		9.3.1 Submittals
		9.3.2 Rolls
		9.3.3 Conformance Testing
			9.3.3.1 In-plant testing
			9.3.3.2 On-site material testing
			9.3.3.3 Properties of the HDPE Geomembrane
		9.3.4 Conformance Tests
		9.3.5 Test Procedures
		9.3.6 Sampling Procedures
		9.3.7 Test Results
		9.3.8 Procedures in the Case of a Conformance Test Failure
	9.4 Delivery
		9.4.1 Transportation and Handling
		9.4.2 Storage
10. GEOMEMBRANE INSTALLATION
	10.1 Earthwork
		10.1.1 Surface Preparation
		10.1.2 Anchorage System
	10.2 Geomembrane Placement
		10.2.1 Field Panel Identification
		10.2.2 Field Panel Placement
			10.2.2.1 Location
			10.2.2.2 Compensation for Material Expansion and Contraction, OR Intimate Subgrade Contact
			10.2.2.3 Installation Schedule
			10.2.2.4 Weather Conditions
			10.2.2.5 Method of Placement
			10.2.2.6 Damage
	10.3 Field Seaming
		10.3.1 Seam Layout
		10.3.2 Seaming Equipment and Products
			10.3.2.1 Fusion Seaming
			10.3.2.2 Extrusion Seaming
		10.3.3 Seam Preparation
		10.3.4 Weather Conditions for Seaming
		10.3.5 Overlapping and Temporary Bonding
		10.3.6 Trial Seams
		10.3.7 General Seaming Procedure
		10.3.8 Nondestructive Seam Continuity Testing
			10.3.8.1 Concept
			10.3.8.2 Submittals
			10.3.8.3 Vacuum Testing
			10.3.8.4 Air Pressure Testing
			10.3.8.5 Spark Testing
			10.3.8.6 Visual Examination
		10.3.9 Destructive Testing
			10.3.9.1 Concept
			10.3.9.2 Location and Frequency
			10.3.9.3 Sampling Procedure
			10.3.9.4 Size of Samples
			10.3.9.5 Field Testing
			10.3.9.6 Construction Quality Assurance Laboratory Testing
			10.3.9.7 Installer's Laboratory Testing
			10.3.9.8 Destructive Sample Pass/Fail Criteria
			10.3.9.9 Procedures if Destructive Sample Fails
	10.4 Defects and Repairs
		10.4.1 Identification
		10.4.2 Evaluation
		10.4.3 Repair Procedures
		10.4.4 Verification of Repairs
		10.4.5 Large Wrinkles
		10.4.6 Bridging of Geomembrane
		10.4.7 Geomembrane Anchoring
	10.5 Backfilling of Anchor Trench
	10.6 Appurtenances
11. SOILS IN CONTACT WITH GEOSYNTHETICS
12. RESPONSIBILITY FOR GEOMEMBRANE LINER
13. DOCUMENTATION
	13.1 Daily Record keeping
		13.1.1 Observation Logs and Testing Data Sheets
14. CQA FINAL REPORT
	14.1 CQA Final Report Contents
	14.2 Record Drawings
TABLES
	Table 1. HDPE GEOMEMBRANE SPECIFICATIONS - segment 9.3.3.3
	Table 2. AIR CHANNEL TEST PRESSURES FOR HDPE GEOMEMBRANES - segment 10.3.8.4
	Table 3. ALLOWABLE PRESSURE LOSS IN AIR CHANNEL TEST- segment 10.3.8.4
	Table 4. SPARK TESTING - segment 10.3.8.5
	Table 5. SEAM SPECIMEN TEST SPECIFICATIONS - segment 10.3.9.7
APPENDICES
	APPENDIX A - MANUFACTURER/INSTALLER COMPLIANCE AGREEMENT
	APPENDIX B - CHECKLIST OF ITEMS REQUIRED PRIOR TO FIELD DEPLOYMENT OF GEOSYNTHETICS

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