Geophysical Mapping: Problem Details 23 of 39 Problem Name: Location of buried materials Problem Type: Hazardous Waste Assigned Methods: + Airborne magnetics Magnetic Methods + DC geoelectrics - Profiling Electrical Methods + Frequency-domain electromagnetics - Profiling Electromagnetic Methods + Frequency-domain electromagnetics - Sounding Electromagnetic Methods + Geoelectrics - Crosshole tomography Electrical Methods + Geoelectrics - Tomography (surface based) Electrical Methods + Ground magnetics Magnetic Methods + Ground penetrating radar (surface-based) Electromagnetic Methods + Ground penetrating radar - Borehole tomography Electromagnetic Methods + Induced polarization - Profiling Electrical Methods + Refraction seismic tomography (surface-based) Seismic Techniques + Seismic crosshole tomography Seismic Techniques + Standard refraction seismics Seismic Techniques + VLF / VLF-R, Radiomagnetotellurics Electromagnetic Methods 0 Airbore electromagnetic methods Electromagnetic Methods 0 BEAM G4 SCAN Electrical Methods 0 DC geoelectrics - Sounding Electrical Methods 0 Micro gravity Gravity 0 Shallow reflection seismics Seismic Techniques 0 Time-domain electromagnetics - Profiling Electromagnetic Methods 0 Time-domain electromagnetics - Sounding Electromagnetic Methods 0 Vertical seismic profiling (VSP) Seismic Techniques 0 Very-high resolution reflection seismics Seismic Techniques    '+' = Technique applicable; '0' = Application possible/limited use