Subsurface Mapping

Detailed mapping of subsurface structure for construction, land development and risk assessment including:

• Geological mapping for the determination of overburden thickness and depth to bedrock - GPR, MASW and Seismic Refraction
• Identification of cap rock, clay layers or intermediate soft or hard layers - MASW and ERI
• Location of isolated features such as cavities and voiding, boulder floaters, dykes, sills, fracture zones, palaeochannels and karst formations - MASW, GPR and ERI

Geotechnical Parameters

Determination of geotechnical parameters to assist in the earthworks and construction design including:

• Assessment of material strength including ground compaction and rock strength for determination of rippability and pile/footing design - MASW and seismic refraction
• Calculation of geotechnical parameters including shear modulus and Young’s modulus via measurement of P- and S-wave velocities using seismic methods - Seismic Refraction, MASW, VSP or borehole tomography
• Determination of in-situ electrical properties for earthing design - Electrical resistivity and thermal resistivity
• Determination of liquefaction potential within seismically active regions - MASW and ReMi

Water Infrastructure

Detailed mapping of subsurface structure for construction, land development and risk assessment including:

• Bathymetric depths for dam volume calculations and sediment characterisation - Sonar
• Marine seismic and thickness of sub-bottom sediment - Marine Seismic Reflection
• Bedrock depth and condition for water retention basin design - MASW, GPR and ERI Seismic Refraction
• Asbestos pipe condition inspections - GPR
• Underground service location - Utility Locating
• Pipeline route geotechnical information and overburden thickness and depth to bedrock - MASW, Seismic Refraction

Mining and Energy

Subsurface assessment specific to the mining, oil and gas, and renewable energy sectors including:

• Delineation of magnetic ore bodies - Magnetometer
• Design, remediation and monitoring of Tailing storage Facilities - ERI, TDEM, FDEM and MASW
• Design of vibrating mine processing infrastructure - MASW
• Location of historic mine workings - GPR, ERI and FDEM.
• Site evaluation for wind and solar farm sites including investigations for wind turbine footing design - Seismic and electrical methods