Serving Iowa Since 1965

Your goals are our goals. Terracon collaborates with engineers, architects, and contractors to deliver cost-effective solutions to achieve success. Working together to make the world a better place for more than 50 years, and we’re just getting started.

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Our culture, systems, and structure enable us to excel at both small and large projects. By combining our national resources with specific local area expertise, we consistently overcome obstacles and deliver the results our clients expect.

Terracon serves a diverse portfolio of private and public clients. By being responsive, resourceful, and reliable, we strive to exceed our clients’ expectations for service, solutions, quality, and speed of delivery. Based on a deep understanding of our clients’ needs, Terracon’s commitment is centered on these key objectives.

How We Can Help:

Environmental Services

  • Environmental Site Assessment
  • Phase 1 / Phase 2
  • Environmental Study
  • Environmental Investigation
  • Environmental Screen / Sampling / Soil Sampling
  • Wetlands
  • Contamination Clean-up
  • Asbestos – Survey, Removal, Testing
  • Lead Based Paint Testing
  • Mold Testing

Geotechnical Services

  • Soil Boring
  • Geotech
  • Sampling
  • Drill Rig
  • Drilling
  • Subsurface Water
  • Ground Water
  • Engineering
  • Deep Foundations
  • Atterberg
  • Hydrometer
  • Grain Size Analysis
  • Unconfined Soil Strength

Materials Services

  • Soil Testing
  • Concrete Testing
  • Concrete Cylinder Breaks
  • Material Inspections
  • Construction Inspections / Consulting
  • Quality control
  • Quality assurance
  • Special Inspections
  • Construction Observations
  • Geophysical Services
  • Ground Penetration Radar
  • Proofrolling

Why Terracon?

Resourceful. Applying new processes, methodologies, and techniques allows us to take a proactive approach to solving project challenges. With our nationwide network of offices, we can easily initiate services on one or multiple projects simultaneously.

Responsive. Acting quickly to meet your deadlines, our employee-owners are always available to you. With convenient locations across the country, we’re able to continually support and adapt to our clients’ fluctuating needs.

Reliable. With vast experience working in local conditions, Terracon is a dependable partner throughout the life of your project. We deliver practical solutions while avoiding delays, surprises, and costly mistakes down the road.


For more information on our services, please contact:


Kathleen Logan

Phone: (563) 355 0702


Rick Lockhart

Phone: (319) 277 4016


Guy Johnson

Phone: (319) 366 8321


Find an office location

More than 175 offices from coast to coast.