Geosynthetic Construction Quality Assurance (CQA)

With over 150 years of combined hands-on experience in the design and installation of geomembranes, Geotest has unrivalled Construction Quality Assurance (CQA) expertise.  Unlike most geomembrane CQA companies, Geotest provides end to end geomembrane solutions, so our team has a unique and comprehensive understanding of all the potential issues with geosynthetics manufacture and installation, as well as the onsite challenges faced by fabrication and installation companies.

Level 1 CQA Services for Geomembranes

Geotest is the largest Level 1 Construction Quality Assurance (CQA) service provider in Australasia.  We specialise in Compacted Clay Liners (CCLs) and geosynthetic materials including Geomembranes, Geotextiles, Geonet, Geocomposite Clay Liners (GCLs).

GCI-ICP Certified (Geosynthetic Certification Institute)

Our experienced inspectors and project managers are fully trained in all aspects of construction quality assurance and certified to the internationally recognised Geosynthetic Certification Institute Inspectors Certification Program.

Installation Integrity – Rigorous CQA For Geomembranes

Our rigorous attention to detail, material sampling, testing and site supervision has been proven to dramatically decrease geomembrane defects, reduce the risk of failure and enhance the service life of the geo liner.  This is why we are the preferred CQA provider for the major players in the mining, industrial, power generation, water storage and waste management industries.

CQA Services

Geotest can provide the following Construction Quality Assurance services to owners, permitting agencies, contractors:

Work Method Statements (WMS) & Inspection Test Plans (ITPS)

Geotest can review work method statements (WMS) & test plans (ITPs) to ensure that the intended procedures adhere to standards.

Materials Compliance

Review manufacturers quality assurance data to ensure that the material supplied complies with the specifications.

Geosynthetic Testing

Our team can take random samples from the geosynthetic material (as specified in the specifications) and have it tested by an independent lab to verify the physical, mechanical & chemical properties of the material.

Geomembrane Material Inspections

Conduct routine inspections to assess handling, storage and damage of materials. Non- conforming materials shall be quarantined as per the specifications.

Ongoing Monitoring

Attend scheduled meetings to discuss progress, planned activities, conflict resolution, and revision to proposed works.

Technical Assistance

Provide technical advice on installation issues, RFI’s, TQ’s and NCR’s that may be encountered during the installation process.

Weld Sampling

Selection of weld samples for destructive testing at intervals specified in the project specifications and having it tested at either Geotest’s testing lab or an independent lab as requested by the client.

Daily Reporting

Provide daily reports with photos depicting installation works, non-conformances and clear work progressions.


Maintain a presence and monitoring in the field at all times.

Geo Liner Defect Inspections

Complete inspections of finished areas for defects and prepare a punch list if required.


Review contractors Construction Quality Control documents and verify them with field information and technical specifications to ensure the information is correct and complying.


Any work not complying with the specifications shall be immediately brought up to the attention of the client.

Executive Summary

Provision of an executive summary upon completion of the project. This outlines the conformance to the Construction Quality Assurance Plan, the approved manufacturers MQA, deployment completion, conformance to relevant ASTM or GRI standards and other issues encountered during the project.