Projects

As part of environmental monitoring and site assessment near a current and historic landfill site in Deniliquin, NSW, a geophysical investigation was undertaken using Electrical Resistivity Imaging (ERI). The purpose of the survey was to identify subsurface anomalies that may indicate potential seepage of landfill material into surrounding ground and provide guidance for further targeted investigations.

The ERI survey involved the deployment of up to 96 surface electrodes arranged in a Dipole-Dipole configuration to achieve high lateral resolution and adequate depth penetration. A fully automated resistivity system was used to inject controlled electrical currents and measure resulting potential differences, capturing the variable resistivity distribution of subsurface materials. The measured resistivity contrasts allowed differentiation between landfill material, infill, and natural ground, as well as identifying zones with elevated moisture or potential contaminant migration pathways.

The acquired ERI data provides a preliminary subsurface model of the site, supporting environmental risk assessment, monitoring, and the planning of any remediation or further investigative programs.