The program aids in the sampling and monitoring of hazardous waste sites. It asks questions about the site, cultural noise, and the contamination problem. The program then considers several geophysical methods: electromagnetic induction; resistivity; ground-penetrating radar; magnetic; seismic; soil gas; gravity; and radiometric. Geophysics Advisor recommends the type or types of geophysics that will most likely fit the site requirements for determining the location of contamination and providing site characterization. The program will also tell the user if the use of geophysics is not suitable for the site. A relative numerical ranking of the various methods is shown on screen.