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Rocky Flats

This site is one of the "Superfund" hazardous waste sites in Colorado. A site qualifies for the National Priorities List (NPL or Superfund list) when the U.S. Environmental Protection Agency (EPA) determines there is a release or threatened release of hazardous substances that may endanger public health, welfare or the environment. In Colorado, the lead agency for Superfund remediation may be either the EPA or the Colorado Department of Public Health and Environment (the state health department).


The Rocky Flats Site formerly manufactured components for nuclear weapons for the nation's defense until 1992. It was added to the U.S. Environmental Protection Agency's (EPA) National Priorities List in 1989 and cleanup of chemical and radiological contamination was completed near the end of 2005. Currently, the U.S. Department of Energy (DOE) manages the Central Operable Unit where the former manufacturing buildings were located. Jurisdiction over nearly 4,000 acres of the former Buffer Zone has been turned over to the U. S. Fish and Wildlife Service to be managed as the Rocky Flats National Wildlife Refuge.


The Department currently serves as the lead regulatory agency under the Legacy Management Agreement signed in 2007.





For more information on the Historical Public Exposures Studies of the Rocky Flats Plant, please contact:


Margaret Ruttenber

Colorado Dept. of Public Health and Environment

303-692-2636 (P)

303-782-0904 (F)


Carl Spreng, State Project Manager


888-569-1831 ext. 3358 toll-free outside the 303/720 area code

Email:  cdphe.hmrfnrd@state.co.us 


The Hazardous Materials and Waste Management Division's Records Center retains documents and publications pertaining to environmental cleanup at Rocky Flats.  These are housed offsite but arrangements can be made to review them at the Department. 


Hazardous Materials and Waste Management Division Records Review


Documents and regulatory information about Rocky Flats can also be found at the U.S. Environmental Protection Agency's Region 8 Technical Library located in Denver, CO.


EPA Region 8 Technical Library


Region 8 Environmental Information Service Center:

800-227-8917  toll-free in Region 8 states