In December 1984, the Department of Energy (DOE) published draft environmental assessments (EAs) to support the proposed<br/> nomination of five sites and the recommendation of three sites for characterization for the first radioactive-waste repository. A chapter common to all the draft EAs<br/>(Chapter 7) presented rankings of the five sites against the postclosure and the preclosure technical siting guidelines.

The purpose of this study is to provide a preliminary geotechnical data base sufficient to initiate the development of Long-Term Risk Models (LTRM), for salt domes, basalt and crystalline rock, and identify technical issues requiring additional investigation.