As has become the norm in recent years, subsurface hydrology sessions took place every day of AGU's Fall 1992 Meeting in San Francisco, Calif. Sessions were organized around various approaches to groundwater modeling, hydrogeology field studies, hydrochemical investigations, vadose-zone studies, and measurement methods. Session chairs contributed the following highlights.
A well-attended special session looked at the “History of Groundwater Hydrology in the Nuclear Era.” F. L. Parker, Vanderbilt University, Nashville, Tenn., reviewed early developments in U.S. radioactive-waste disposal and offered the provocative viewpoint that a disposal program is characterized by a high degree of inflexibility. W. W. Dudley of the U.S. Geological Survey, Denver, Colo., summarized the hydrological studies that have been such an important component of the nuclear explosion program at the Nevada Test Site. Two papers presented results of investigations in connection with the Waste Isolation Pilot Plant site, where military waste is to be stored in salt.