Hager GeoScience is a Collier Geophysics company that has been providing professional services in geophysics and geology to engineering, environmental, and construction companies for 25 years. Our specialties include low frequency ground penetrating radar for stratigraphic surveys using units grandfathered in under the FCC regulations, seismic refraction, reflection, multichannel analysis of surface waves, and H/V for stratigraphy, bedrock, bedrock fractures, and seismic site characterization. We also have a large suite of borehole geophysical logging tools, including a borehole color video and borehole sonar. HGI uses GPR and EM methods to locate utilities, USTs, foundations, and voids and performs GPR scanning of concrete for rebar, conduits, and voids.