Subsurface Site Investigation

Integrated NDT Toolbox for Comprehensive Subsurface Characterization

Overview

Infrasense deploys a comprehensive suite of specialized subsurface investigation technologies including Ground Penetrating Radar (GPR), Electromagnetic Induction (EMI), Electrical Resistivity, and Electromagnetic Conductivity Methods to assess both manmade infrastructure and natural subsurface features. These advanced geophysical and nondestructive evaluation methods provide critical data for complex geotechnical, structural, and environmental assessments where standard techniques may be insufficient.

Each technology offers distinct advantages for specific subsurface conditions and investigation objectives, enabling comprehensive site characterization through integrated multi-method approaches. The NDT data is geo-referenced using high-precision GPS coordinates to accurately locate and map subsurface features.

Our specialized approach addresses diverse investigation needs from utility detection and foundation assessment to environmental monitoring and archaeological site investigation, delivering reliable subsurface data for informed decision-making.

Capabilities

Detecting and mapping buried infrastructure and utilities

Assessing foundation depth and structural integrity

Delineating subsurface contamination and environmental conditions

Characterizing geological features and material properties

Results You Can Trust

In addition to comprehensive subsurface assessment, our investigation services provide the following:

Comprehensive Site Investigation Reports
Subsurface conditions mapped and characterized with detailed analysis of both manmade features and natural geological conditions.
CADD Compatible Investigation Maps
Plan-view maps showing subsurface features, utilities, foundations, and geological conditions with depth and material information.
Geospatially Referenced Results
Allowing integration into ArcGIS with precise location data for all identified subsurface features and anomalies.

Technology & Tools

Electrical Conductivity Measurements

Non-contact electromagnetic testing using induced electric currents and magnetic fields to detect subsurface anomalies, utilities, and material changes.

Electrical Resistivity

A multi-electrode measurement system that inject current into subsurface materials and measure the electrical potential differences to map resistivity variations and identify geological features.

Related Case Studies

Ongoing Subsurface Utility Engineering Projects

August 15, 2025

Ready for a Project?

Contact our specialized geophysical team today to discuss your subsurface investigation needs for your site.

DISCUSS YOUR PROJECT

“We’ve partnered with Infrasense on a range of projects over the years, and they’ve consistently delivered. Their team brings deep technical expertise, professionalism, and a willingness to go the extra mile—especially on fast-moving or complex jobs where precision matters most. When we need GPR or specialized NDE, Adam is always our first call.”

— Mollie Rhett, Director of Marketing, ICC-IMS

“For a complicated project in Harvard Square, Kleinfelder hired Infrasense to conduct GPR of the roadway, redline tunnel and the utilities using Infrasense’s technology. The data was proven to be valuable to determine the existence of utilities in question where records were not complete, the roadway structure, and the MBTA redline tunnel where we were not able to get a permit to excavate to locate the top of the tunnel due to permitting issues. The data and technology has come a long way and was proven to be invaluable.”

— Tyson Ross, Senior Project Professional, Kleinfelder

“NCE has partnered with Infrasense on local and state highway pavement evaluation projects for more than 15 years. Infrasense provides extensive knowledge and expertise with GPR testing and analysis, providing valuable layer thickness information for assessing and selecting pavement rehabilitation treatments. Due to Adam and his team, Infrasense is the only GPR specialty firm we call.”

— Linda Pierce, Principal, Nichols Consulting Engineers

“Infrasense is an essential part of our strategy to monitor the condition of our wearing surfaces throughout the state, providing cost-effective and reliable results. This data is essential for our bridge management system which is focused on bridge deck preservation.”

— Philip Meinel, WisDOT Structures Asset Manager

Have a Question?

When should specialized geophysical methods be used instead of standard utility locating techniques?
Advanced methods like electromagnetic induction and electrical resistivity are essential for complex sites where standard GPR reaches its limits—such as deep utility detection, contamination mapping, or challenging soil conditions. Our multi-method approach provides comprehensive subsurface characterization when single-technology solutions cannot deliver the depth penetration or resolution required for critical infrastructure decisions.
How do integrated investigation methods reduce overall project risk and cost?
By deploying complementary technologies simultaneously, we provide complete subsurface characterization that eliminates costly surprises during construction. Our comprehensive approach typically reduces total investigation costs by 40-60% compared to sequential drilling programs while identifying conditions that traditional methods often miss, preventing expensive changes and delays during construction.
What advantages do NDT methods provide for environmental and geotechnical site characterization?
Non-invasive geophysical methods enable rapid site-wide assessment without disturbing potentially contaminated materials or compromising site integrity. Our integrated approach maps contamination boundaries, geological features, and subsurface structures continuously rather than at isolated sampling points, providing the comprehensive site understanding needed for accurate remediation planning and geotechnical design.

Our Company

Infrasense Acquires Advanced Bridge Inspections (ABI)

Services

Technology

Subsurface Site Investigation

Integrated NDT Toolbox for Comprehensive Subsurface Characterization