California Department of Transportation

 

 

 

Branch of Geotechnical Instrumentation

The Geotechnical Instrumentation Branch (GIB) provides statewide services including:

  • Specialty geotechnical testing
  • Geotechnical instrumentation
  • Nuclear Gauge Calibration
  • The services provided by GIB include landslide monitoring services, cone penetrometer testing, automated geotechnical monitoring, nuclear gage calibration services, and radiation safety administration.

    Request forms are posted on the Client Request page.

    BRANCH CHIEF
    Gem-Yeu Ma
    Phone : (916) 227-1080
    E-mail: Gem-Yeu.Ma@dot.ca.gov

    SERVICES