Rocky Flats - Site History

 
 
A brief Rocky Flats timeline:
Dates
Rocky Flats Events
Ongoing
CDPHE continues to monitor effectiveness of DOE Superfund remedy at central area
2012
Five-year review shows Superfund area remedy effective
July 2007
DOE transfers peripheral lands to the U.S. Fish & Wildlife Service for use as Refuge
2007
Colorado receives $10 million in natural resources damages from federal government
2006
Rocky Flats site achieves closure; Rocky Flats Plant facilities gone
2005
Physical cleanup completed, but central area remains a Superfund site
2001
Congress passes Rocky Flats National Wildlife Refuge Act of 2001
1998
CDPHE releases a study of cancer rates near Rocky Flats
1996
Rocky Flats Cleanup Agreement signed, which outlined site cleanup milestones
1993
Rocky Flats Plant’s nuclear weapons production mission ends
1992
Facility operator pleads guilty to environmental crimes, pays $18.5 million fine
1989
EPA and FBI raid Rocky Flats Plant
1957, 1969 
Major fires in gloveboxes release contamination
1952-1989
Rocky Flats Plant produces plutonium triggers for U.S. nuclear weapons arsenal
1951
Construction of Rocky Flats Plant starts to the northwest of Arvada, Colorado

Sources: CDPHE records and DOE site history publication; table last updated August 2016