Accurate Ground Models Smarter Decisions
Geophysics gives you a clear picture of what lies beneath the ground without digging. Using fast, non-invasive tools, we map soil, rock, groundwater, and buried features across your site. This bigger-picture view helps you reduce risk, avoid costly surprises, and focus investigations where they matter most. Because large areas can be surveyed quickly, geophysics often reduces the need for extensive drilling, saving time and money while adding certainty to your project.
Our Geophysical Services
Site Characterisation & Seismic Classification
We build a clear picture of the ground across your site, including soil layers, depth to rock, and seismic response (Vs30, Site Class), so you can design and build with confidence. We measure the electrical resistivity and thermal conductivity properties of soil and rock layers.
Groundwater & Hydrogeological Mapping
We map groundwater table depths, aquifers, flow paths and drainage pathways without extensive drilling, saving costs and guiding smarter well placement and stormwater design.
Fault Mapping & Geological Hazard Assessments
We map active faults and subsurface hazards early, helping councils and developers plan safely, reduce risk, and protect communities.
Slope Stability & Landslide Risk Imaging
We scan beneath slopes and road corridors to identify weak zones, slip planes, and groundwater pockets, helping protect and future-proof our rail and road networks.
Utility & Subsurface Infrastructure Locating
We locate buried services and infrastructure with non-invasive scanning, keeping construction safe and preventing costly damage or delays.
Contaminated Land Mapping
We map buried waste and landfill to reduce environmental risk and support smoother consenting and construction processes.
Infrastructure Condition & Concrete Scanning
We can assist the evaluation of bridges, pavements, and concrete assets using non-invasive methods, reducing risk and supporting safe, efficient asset management.
Void, Sinkhole & Post-Event Investigations
We quickly detect voids, sinkholes, and subsurface ground damage after disasters to support faster and safer recovery.
Archaeological & Heritage Site Mapping
We locate buried structures, pā sites, and cultural features non-invasively, minimising disturbance to sensitive environments.
Mineral & Resource Exploration
We map subsurface geology to identify mineral and resource potential.
Why Choose Cook Costello for Geophysical Services?
At Cook Costello, we don’t just deliver data, we deliver clarity. Our geophysics team works alongside our geotechnical, civil, and structural engineers to give you a complete picture of your site. This integrated, end-to-end approach means you receive reliable data, clear reports, and practical advice that flows seamlessly into design and construction.
By combining geophysical insights with engineering expertise, we maximise the value of ground investigations, reducing uncertainty, saving cost and time, and helping you avoid surprises on site. From early feasibility studies through to construction support, we provide the information and interpretation you need to move forward with confidence.
Featured Projects
Start Your Project With Confidence
Tell us about your needs, our team will guide you through the next steps.