Geotechnical Engineering

Geotechnical Engineering

We provide field investigations, laboratory testing, and geotechnical engineering design and recommendations for a range of projects. Typical geotechnical engineering services include:

  • Shallow (conventional) and deep foundation (cast-in place caissons, helical pier, or driven piles) design

  • Seismic parameters

  • Retaining wall parameters

  • Pavement design

  • Liquefaction analysis

  • Slope stability analysis

  • Percolation and infiltration testing

  • Drywell performance testing


Whether it’s our solid-stem Mobile B-24, track-mounted hollow-stem CME 55, or limited access drill rigs, we provide subsurface exploration and sampling for any project from big to small. We provide exploratory borings for preliminary investigations as well as percolation and infiltration testing.

Soils and Materials Testing Laboratory

Our extensive in-house soils laboratory provides a variety of soils and material testing services. Laboratory tests are performed in general accordance with industry standards (ASTM/AASHTO). To ensure proficiency with such standards, GeoSolutions participates in the following:

  • Division of State Architect (DSA) Laboratory Acceptance Evaluation (LEA) Program

  • Cement and Concrete Reference Laboratory (CCRL) Laboratory Inspection and Proficiency Sample Programs

  • AASHTO Accreditation Program (AAP)

  • Caltrans Joint Training and Certification Program (JTCP)

Please contact us for a full fee schedule of laboratory tests we provide.

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Engineering Geology

Engineering Geology

We can provide all your engineering geology services for a variety of projects including site investigations, field mapping, geologic hazards and recommendations. Geology services include:

  • Engineering geology investigations

  • Geologic hazards report

  • Coastal bluff evaluations (including bluff retreat rate and setback distance)

  • Fault investigation (including fault setback distance)

  • Landslide evaluation (including analysis and mitigation)

  • Slope stability analysis

Special Inspection

Compaction Testing

We provide grading observation, field density testing, and foundation inspections performed by certified technicians with nuclear gauge safety training with over 30 years of local experience for any size and scope of project. Over the years in working with various environmental, military, federal and local government agencies, and oil companies, our technicians have undergone extensive safety training.

Special Inspection

Our inspectors are International Code Council (ICC), American Concrete Institute (ACI), American Welding Society (AWS), State of California Department of Transportation (CALTRANS) certified. With over 30 years of experience, we provide inspection of the following:

  • Reinforced Concrete

  • Reinforced Masonry

  • Structural Steel

  • Structural Welding

  • Post Tension

  • Epoxy Inspection

  • Wood Framing

  • Spray Applied Fireproofing

Contact us for a full listing of inspections performed.