Geologic characterization of the Paducah Gaseous Diffusion Plant and surrounding area determined from geophysical logs.

摘要

The Paducah Gaseous Diffusion Plant (PGDP) discovered in August 1988 that several private wells, generally north of the plant, were contaminated with trichloroethylene and/or (sup 99)Tc. Presumably, PGDP is the source of both contaminants, and the most likely pathway for contaminant transport is within a regional aquifer that underlies the site. However, it is not possible to characterize potential flow paths and remediate the contamination until the geologic setting of the site is determined and additional well construction information is obtained. It was decided to conduct a geophysical logging project on- and off-site to determine the stratigraphic characteristics of the region. Four types of geophysical logs were obtained from each well: caliper, natural gamma ray, thermal neutron, and gamma-gamma density. This report presents the results of the geophysical logging. 12 refs., 13 figs., 4 tabs.