Full-Service Support From Start to Finish

CDG’s full range of geotechnical and testing services ensures timely, cost-effective and expert design solutions from conception through project completion. Our expertise is built on integrating advanced geoscience technologies with the physical environment.

Prepared for Demanding Projects and Timelines

CDG’s experienced designers specialize in conventional and innovative geotechnical procedures for foundation design, ground improvement and stabilization, and earth retention structures. CDG’s in-house drilling equipment includes truck, ATV and skid steer mounted drilling equipment to successfully achieve demanding project schedules.

Construction Materials Testing

Construction materials testing is an essential element of the construction process. It ensures all projects adhere to design construction material specifications. CDG’s experienced team of engineers and testing technicians are trained to identify non-compliant elements and offer creative solutions to provide confidence in a successful and timely result.


  • Stabilization techniques of soft and expansive soils
  • Foundation solutions for all loading and subsurface conditions
  • Settlement analysis and mitigation techniques
  • Slope design and stability analysis for conventional and steepened embankments
  • Rigid and flexible pavement design
  • Earthen dam design and safety analysis
  • Sinkhole identification and remediation
  • Groundwater collection and removal systems
  • Structure distress evaluation, remediation and expert witness testimony

Expedite Your Project With Our Accredited In-House Labs

The CDG Materials Testing Laboratory maintains a strict quality assurance program and is accredited by the American Association of State Highway and Transportation Officials (AASHTO) and the U.S. Army Corps of Engineers.

We have the advantage of multiple laboratory locations and can offer testing services to our clients in a shorter, more efficient time frame than those who rely on a single laboratory.

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NAICS code: 541380

  • Verification of appropriate earthwork procedures
  • Laboratory testing of soil and aggregate
  • Density testing of compacted fill materials
  • Evaluation of foundation bearing conditions including full-scale load tests
  • Sampling and testing of structural concrete, grout and mortar
  • Inspection of structural steel bolted and welded connections
  • Asphalt sampling and testing including batch plant inspections
  • Specialty testing such as sprayed fire-resistant materials and vapor emission testing
  • Special inspections in compliance with International Building Code (IBC) requirements