Techniques Acoustic Leak Detection  X Downhole/Crosshole Radar  ? Downhole/Crosshole Seismic ? Earthquake Seismology X Electromagnetic Induction X Fathometry X Geoelectric Leak Detection X Geophysical Borehole Logging * Gravity X Ground Penetrating Radar X Induced Polarization  X Magnetic Gradiometry  X Magnetic Susceptibility  X Magnetic Total Field  X Metal Detection  X Multi-Beam Sonar  X Radiometry  X Resistivity Imaging X Resistivity Profiling X Resistivity Sounding X RF Electromagnetics  X Seismic Reflection X Seismic Refraction X Seismic Shear Wave X Side Scan Sonar  X Spontaneous Potential X Sub-Bottom Sonar X Time Domain Electromagnetics X Vibration Monitoring X VLF Electromagnetics X X-Ray Fluorescence X	Applications Aquifer Evaluation Bearing Capacity Estimation Boring Location Clearance Bridge Pier Scour Detection Buried Drum Detection Mapping Buried Waste Characterization Cave Detection/Delineation Concrete Thickness Determination Depth-to-Rock Detection/Mapping of Disseminated Metals Fault/Fracture Detection/Tracing Foundation Element Imaging Geoarchaeological Studies Grave/Burial Detection Mapping Groundwater Contamination Plume Detection/Delineation Hydrocarbon Detection/Delineation Hydrographic Studies Identification of Water-Bearing Zones In-situ Density Estimation Landfill/Lagoon Liner Leak Detection Ordnance Detection/Mapping Pipeline Leak Detection Rebar/Cable Detection/Tracing Roadway/Pavement Evaluation Rock Rippability Estimation Sea Floor Mapping Sedimentation Studies Seismic Hazard Determination Septic System Detection/Delineation Shipwreck Location Sinkhole Detection/Delineation/Prediction Sinkhole Hazard Studies Stratigraphic Mapping/Profiling Subsidence Investigations Uncontained Waste Detection/Mapping UST Detection/Delineation Utility Detection/Tracing Void/Washout Detection Water Table Mapping Well Characterization Well Construction Planning or Confirmation Well Siting

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