EA-1747: Final Environmental Assessment

Surface Water Configuration Project at the Rocky Flats Site; Jefferson County, Colorado

Office of NEPA Policy and Compliance

June 1, 2011

Surface Water Configuration Project at the Rocky Flats Site; Jefferson County, Colorado

DOE issued a final EA that analyzes the potential environmental impacts of associated with the proposed breaching of dams at ponds A-3, C-2, Present Landfill (PLF), A-4, and B-5 at the Rocky Flats Site located in Jefferson County, Colorado.

For more information, see Surface Water Configuration Project at the Rocky Flats Site.

  • Rocky Flats Site, Colorado, Surface Water Configuration Environmental Assessment, DOE/EA-1747 (May 2011) (30.21 MB)
    The RFS is owned by the United States and is located in northern Jefferson County, Colorado, approximately 16 miles northwest of Denver. The RFS was formerly used to process and manufacture nuclear weapons components, but cleanup and closure of Rocky Flats by the U.S. Department of Energy (DOE) was completed in 2005. The Office of Legacy Management (LM) has jurisdiction and control of portions of Rocky Flats. The purpose of the Proposed Action is to reduce or eliminate the retention of surface water to return the RFS surface water flow configuration to the approximate conditions existing prior to construction of the dams.