ABSTRACT
In Wilson, Everett, and Cullen the statement is made that "as much as 80% of the cost of site characterization during cleanup of a Superfund site can be attributed to laboratory analyses, many of which render nondetectable results. Without development and commercialization of deployable sensors and field/screening analytical techniques, it is going to become more difficult, and therefore more costly to comply with existing and new pieces of environmental regulation." Geophysical logs can be analyzed in the field to guide the location and frequency of sampling and thus may reduce the number of samples needed and the cost. Williams describes the effectiveness of borehole geophysics in obtaining data on the hydrogeology at the site of the Retsof salt-mine collapse in New York. The most economic method of combining coring and geophysical logging in a site investigation is to drill a hole for geophysical logging in a location where most rock types in the area will be intersected.
