I have 25 years of experience in near surface geophysics, and I have managed and conducted numerous geophysical investigations assisting clients with characterizing the subsurface. These investigations have involved the use of ground penetrating radar (GPR), radar tomography (RT), resistivity, seismic, magnetic, electromagnetic, acoustic, and X-Ray. I routinely conduct geophysical investigations in support of environmental site assessment and remediation projects, investigate bedrock topography, and conduct nondestructive testing of concrete. I also provide geophysical borehole logging services to assist clients with determining fracture orientations and fluid flow in rock. I have authored numerous published papers discussing various geophysical technologies.I am one of the pioneers and recognized experts in 3D investigations using advanced geophysical technologies such as 3D GPR arrays and RT. In the last 20 years I have managed 3D Subsurface Utility Engineering investigations all over the country for local and state departments of transportation, airports, mass transit, university systems and research facilities. I have also published numerous articles on 3D SUE and 3D GPR array technology.