This report describes the use and evaluation of several remote sensing techniques in conjunction with direct sample collection in order to develop a systematic approach for subsurface investigations at uncontrolled hazardous waste sites. Remote sensing techniques (electrical resistivity, seismic refraction, ground-penetrating radar, and metal detection) were employed to determine the extent (and sequence) to which they may be integrated with the more conventional methods of test drilling, installation of monitoring wells, and excavation for determining information such as the following: nature and extent of ground water contamination, presence and number of buried drums, topography and condition of bedrock, and costs and effectiveness of several abatement methods. Both the remote sensing and conventional sampling methods were used at an abandoned hazardous waste dump in Coventry, Rhode Island.