Redox state of the Cedar Mountain Formation aquifer, Green River UMTRA site, Utah. Technical report

摘要

The presence of pyrite and organic matter in the Cedar Mountain Formation aquifer of the Green River site indicates that the groundwater at the site may be reducing (DOE, 1988, 1987); and therefore, redox-sensitive elements such as uranium would precipitate from groundwater within a few hundred feet hydraulically downgradient from the proposed disposal site. The purpose of this study is to substantiate this observation by determining the redox condition of the Cedar Mountain Formation aquifer directly. Redox potential (Eh), dissolved oxygen, and a suite of redox were measured directly in the water samples collected in May, 1988, from the Cedar Mountain Formation aquifer. This report summarizes the results of the groundwater redox measurements.