Geomembrane Integrity Testing of a Landfill Cell Using High-Voltage Arc Testing (ELD)

Early-stage testing identified 17 defects prior to cover placement - eliminating rework and confirming liner integrity before commissioning.

Electrical Leak Detection (ELD) using high-voltage arc testing was carried out on a newly constructed landfill cell in Queensland, Australia, to verify geomembrane integrity in accordance with project specifications and industry practice.

Testing was conducted by GeoQ as an independent third-party provider on approximately 22,000 m² of 2.0 mm HDPE geomembrane, prior to placement of protective layers.

Arc testing was performed using the Buckleys Geo Pro2 geomembrane testing system, configured to suit material thickness and site conditions. Controlled voltage settings (12.5–13.4 kV) were applied, with adjustments at extrusion welds and tie-in points to ensure accurate and repeatable detection.

At the exposed liner stage:

17 leak paths were identified
All defects were repaired and successfully retested prior to cover placement

Following installation of the overlying materials, a post-installation verification survey confirmed:

Zero residual installation defects
One new defect attributed to damage during aggregate placement

The results demonstrate the importance of conducting ELD at the exposed liner stage, where defects can be identified and resolved before becoming inaccessible.

This approach:

Reduces the need for intrusive investigation
Minimises rework and associated costs
Supports efficient project delivery and commissioning timelines

The use of calibrated equipment, controlled voltage application, and systematic coverage ensured accurate detection without damage to the geomembrane.