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Who We Are

About SGC

Imaging the subsurface to optimise resource allocation to minimise risk.

A proudly Australian-owned and operated geophysical consultancy specialising in non-invasive subsurface investigations.

Our methods provide precise and actionable insights, empowering businesses and councils to make informed decisions about subsurface conditions — without the cost or disruption of invasive drilling.

We employ a wide array of geophysical methods with a strategic approach to provide accurate, cost-effective, and environmentally friendly solutions tailored to your specific needs across Tasmania & Victoria at the most competitive prices.

9+
Methods
100%
Non-Invasive
3D
Modelling

Services

Archaeology
Unmarked Burials, Artefacts & Footings
Concrete Structural NDT
Rebar · Corrosion · Compressive Strength · Voids · Honeycombing
Precision Agronomy
Yield & Resource Optimisation
Bedrock Mapping
MASW · P-Wave Refraction · VS30
Karst Investigation
Non-Invasive Characterisation of Karst Terrain
Groundwater Mapping
Flow pathways with Electromagnetics & ERI
Landfill Characterisation
Map boundary extent, depth and composition
Sub-Soil Site Stability
Soil Stiffness . Voids . Sinkholes . Competent Bed Rock . Weathered Rock Zones
Salinity Mapping
Frequency-Domain Electromagnetics
Pavement Profiling
Delineate Pavement and Identify Depth to Bedrock
Forensics
Buried Firearms & Unmarked Burials
UXO & UST Detection
Locate Underground Service Tanks & Unexploded Ordnance

Geophysical
Methodologies

Seismic
MASW · P-Wave Refraction · VS30
Principle
Acoustic impedance contrasts at lithological boundaries
Reveals
Layering, site competence, load-bearing parameters
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ERI/IP
Electrical Resistivity · Induced Polarisation
Principle
Ionic movement and charge storage in pore fluids
Reveals
Lithology, moisture, leachate, sulfide mineralisation
Magnetics
Ground Magnetic Survey
Principle
Naturally occurring magnetic property variations
Reveals
Rock types, buried metallic objects, structural features
EM/FDEM
Frequency-Domain Electromagnetics
Principle
Subsurface eddy current induction
Reveals
Highly conductive bodies, faults, contamination plumes
GPR
Ground Penetrating Radar
Principle
High-frequency radar reflections from dielectric contrasts
Reveals
Utilities, voids, concrete delamination, buried structures
Concrete Structural NDT
Corrosion · Strength · Voids · Rebar
Principle
Non Destructive Concrete Testiting and Scanning
Reveals
Map defects, rebar and assess structural integrity of slabs

Phased Approach to
Site Characterisation

A systematic four-phase framework that moves from broad reconnaissance to quantitative analysis — delivering maximum insight with minimum site disruption.

01
Phase One
Reconnaissance
  • Rapid, broad screening via EM/FDEM
  • Large spatial coverage in minimal time
  • Anomaly maps guiding focused investigation
  • Identify target zones rapidly
02
Phase Two
Comprehensive Imaging
  • Tool optimisation per target
  • Resistivity, seismic, magnetics
  • Depth-constrained 2D/3D models
  • Delineate structure and contamination
03
Phase Three
Targeted Investigation
  • pXRF on-site geochemical analysis
  • Quantitative soil assessment
  • Heavy metal and contaminant ID
  • Classification of suspect zones
04
Phase Four
Integrated Reporting
  • Geophysics + geochemistry + geotech
  • Clear conceptual site model
  • Drilling and remediation recommendations
  • Engineering design guidance

Areas We
Serve in Tasmania

Spaulding Geophysics provides geophysical services and concrete NDT across Tasmania, from Hobart and Launceston to regional centres, coastal towns, and remote communities statewide.

South & Greater Hobart
  • Hobart
  • Kingston
  • Margate
  • Kettering
  • Bruny Island
  • New Norfolk
  • Sorell
  • Dodges Ferry
North & Launceston
  • Launceston
  • George Town
  • Longford
  • Perth
  • Hadspen
  • Westbury
  • Deloraine
  • Bridport
Northwest Coast
  • Devonport
  • Burnie
  • Ulverstone
  • Wynyard
  • Penguin
  • Smithton
  • Latrobe
  • Port Sorell
East Coast & Midlands
  • Bicheno
  • St Helens
  • Scottsdale
  • Swansea
  • Campbell Town
  • Ross
  • Queenstown
  • Huonville

Spaulding Geophysics delivers on-site geophysical services and concrete NDT across all of Tasmania — including Hobart, Launceston, Devonport, Burnie, Ulverstone, George Town, Longford, Deloraine, Smithton, Wynyard, Bicheno, St Helens, Scottsdale, Queenstown, Huonville, Kingston, Kettering, Bruny Island and surrounding communities. Remote and regional sites welcomed.