Quality Geophysics has vast experience in delineating subsurface waste areas and landfills using geophysical methods. Electromagnetic (EM) methods have proven their use in establishing lateral limits of landfills. Using the full spectrum of geophysical information, Quality Geophysics is able to discriminate metallic waste and non-metallic waste areas within landfills. Resistivity methods in the form of electrical imaging have shown reliability to assess the depth and internal composition of landfills.