Butterfield Canyon ecological risk assessment: a supplement to the September 1996 ecological risk assessment, northern Oquirrh Mountains

Three documents related to lead in the environment in southwestern Salt Lake County, Utah, including a report prepared for Kennecott Utah Copper Corporation by Ecological Planning and Toxicology, Inc., providing an assessment of the ecological risk of lead in the stream bed, riparian zone, and upland areas of Butterfield Canyon due to past mining operations in the area; a paper by Jeanne Willson from February 1997 on lead in the soil in Herriman; and a review of Willson's report by Gerry M. Henningsen. Also some correspondence of the Environmental Protection Agency Region 8 office from 1996. This digital file contains the entire contents of folder 1 from box 21 of the Supefund Records Center records collection.