This EIS evaluates the environmental impacts associated with the reasonable alternatives for managing and storing elemental mercury at seven candidate locations (i.e., Colorado, Idaho, Missouri, Nevada, South Carolina, Texas, and Washington). The U.S. Environmental Protection Agency, the Texas Commission on Environmental Quality, and the Mesa County Board of Commissioners (Mesa County, Colorado) are cooperating agencies in the preparation of this EIS.

Supplemental Environmental Impact Statements have also been prepared (DOE/EIS-0423-S1 and DOE/EIS-0423-S2).