Finding Buried Risks: How Geophysics Prevents Costly Surprises on Construction Sites

Blog: 2026 North Central Geophysics Insights

The Cost of the Unknown

Before any foundation is poured or pavement placed, unseen subsurface conditions can threaten safety, budgets, and schedules. Buried tanks, utilities, or voids aren’t just obstacles—they’re risks that can stall construction and drive up costs.

Geophysical testing and geophysical surveys give project teams a non-destructive way to “see” what’s underground—long before crews start digging. Using tools like ground penetrating radar (GPR), electromagnetics, seismic, and electrical resistivity surveys, Terracon helps clients identify hidden hazards, confirm site conditions, and make informed design decisions.

Smarter Data, Safer Sites

Our clients rely on Terracon’s geophysical services to uncover buried risks and deliver the data needed for confident planning:

• Underground storage tank (UST) investigations protect crews and prevent contamination incidents.
• Underground obstruction surveys help identify foundations or utilities before they delay projects and lead to costly change orders.
• Sinkhole investigation and karst location testing identify unstable ground before structures are built.
• Bedrock mapping services and subsurface soil properties testing guide foundation design.
• Pavement thickness assessment and vibration monitoring services help extend pavement life and protect adjacent facilities.

By integrating geophysical methods with geotechnical investigations, our teams reduce uncertainty and allow engineers to refine designs—saving both time and money.

From Risk to ROI

When subsurface surprises are discovered early, owners avoid redesigns and contractors keep projects moving. One recent client used GPR to identify underground obstructions before grading began—averting a costly delay and saving weeks on schedule.

See What Others Can’t

Terracon’s experienced geophysicists combine field expertise, advanced technology, and a safety-first mindset to deliver clear, actionable results. See how our team helps clients find buried risks before they find you