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Umatilla, OR
UMDCF M55 Rocket Disassembly Photo 2
A chemical operations crew from the Umatilla Chemical Depot separate rocket motor and warhead sections on nine M55 rockets that were sent to an Army lab in Picatinny, N.J., for propellant sampling and analysis.
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The Umatilla Chemical Depot (UMCD) was one of nine Army installations in the United States that stored chemical weapons. The chemical weapons originally stored at the depot consisted of various munitions and ton containers containing GB or VX nerve agents or HD blister agent. Stockpile disposal operations were successfully concluded in October 2011 using high-temperature incineration technology. This technology has been used by the Army for more than two decades, safely at several sites to successfully dispose of more than 80 percent of the nation’s original chemical weapons.

The Army worked in partnership with Oregon state and local government agencies, as well as federal agencies like the U.S. Environmental Protection Agency and the Centers for Disease Control and Prevention, to safeguard the local community and protect the environment as we stored and disposed of these chemical weapons. The Army safely stored approximately 12 percent of the nation's original chemical weapons at the Umatilla Chemical Depot starting in 1962.

The UMCD opened in 1941. The depot's mission was to store and maintain a variety of military items, from blankets to ammunition. The depot’s mission, however, changed in 1962 to include the safe storage of chemical weapons. From 1990 to 1994 the facility reorganized in preparation for eventual closure, shipping all conventional ammunition and supplies to other installations.

The Umatilla Chemical Agent Disposal Facility (UMCDF) was designed for the sole purpose of destroying the chemical weapons stored at the UMCD. Facility construction was completed in 2001, and the Army began testing the facility. Weapons disposal took place from 2004-2011.

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DEQ approves closure plan for UMCDF [142KB pdf] 1/18/2013 Hermiston, OR  - Umatilla Chemical Depot, Hermiston, Ore. The Umatilla Chemical Agent Disposal Facility (UMCDF) has taken another step towards successful project completion and establishing legacy of environmental responsiblity in northeast Oregon.

Ceremony to Mark End of Chemical Weapons Stockpile [168KB pdf] 3/8/2012 Umatilla, OR  - The Umatilla Chemical Depot and Umatilla Chemical Agent Disposal Facility will hold a public ceremony to celebrate the End of UMCDF Chemical Demilitarization Operations and the Destruction of the UMCD Chemical Weapons Stockpile.

UMCDF Weekly Update [126KB pdf] 11/17/2011 Hermiston, OR  - Umatilla Chemical Agent Disposal Facility weekly project update week ending November 18, 2011.

UMCDF Weekly Update [109KB pdf] 11/3/2011 Hermiston, OR  - Umatilla Chemical Agent Disposal Facility weekly project update for week ending November 4, 2011.

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Umatilla Chemical Agent Disposal Facility Safety Milestone

On 15 January 2010, Washington Demilitarization Company, LLC announced the UMCDF team achieved the safety milestone of six million man-hours of continuous effort without an accident resulting in a lost day away from work. This is the first time UMCDF has reached the six million man-hour mark and comes after a calendar year of 2009 that finished with a recordable injury rate of .70. This achievement reflects highly upon the UMCDF, the U.S. Army Chemical Materials Agency, and the U.S. Army.

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