Forensic Engineering

Geophysical Services

J.S. Held’s Inaugural Global Risk Report Examines Potential Business Risks & Opportunities in 2024

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J.S. Held provides a broad range of geophysical services to aid in the surface and subsurface assessment of the environment.

Our team has extensive experience surveying sites of all types and sizes to evaluate geological conditions.

For current engineering licensure info, click here.

Our Services
  • Borehole Geophysics
  • Coastal Erosion Assessments
  • Concrete Ground Penetrating Radar (GPR)
  • Crosshole Sonic Logging (CSL)
  • Concrete & Earthen Dam Assessments
  • Electrical Resistivity for Grounding Designs
  • Electrical Resistivity Imaging (ERI) Surveys
  • Evaluations of Base, Subgrade, Concrete, & Asphalt
  • Geological Investigations
  • Ground Penetrating Radar (GPR) Surveys
  • Karst (Sinkhole & Cave) Evaluations – Southeast, Texas, & Portions of the Caribbean
  • Magnetic Surveys
  • Microgravity Surveys
  • Pile Integrity Testing (PIT)
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