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A3GEO provides construction-phase geotechnical and geologic engineering services to project owners, construction managers, contractors and design-build teams. The construction-phase services that we provide include:


  • Construction Management Geotechnical Quality Assurance (QA)

  • Design-Build Recommendations/Reviews

  • Observation and Testing

  • Earthwork and Compaction Control

  • Foundations

  • Ground Improvement

  • Ground Support

  • Shoring/Underpinning

  • Subsurface Utility Installation

  • Underground Construction

  • Geotechnical Instrumentation/Monitoring

  • Plan/Submittal Reviews and RFI/RFC Responses

  • Geotechnical Change Order Reviews/Resolution


At A3GEO, construction services are led by highly-qualified licensed professionals who also provide investigation and design phase services. We diligently observe, test and document contract conformance in clear and unambiguous deliverables; we understand the criticality of schedule and work proactively to minimize delays, anticipate challenges and rapidly resolve issues as they arise.


A3GEO’s construction resources include 40-Hour HAZWOPER-trained field personnel, nuclear field density test equipment, and an accredited in-house geotechnical laboratory certified by AMRL/AASHTO and the DSA (LEA#295).


A3GEO is a CPUC-certified woman-owned business enterprise (WBE); we frequently provide pre-negotiated project-specific laboratory and nuclear gauge testing services to contractors on a unit rate basis. 

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