Coordinates: 45°50′35″N 119°26′17″W / 45.84306°N 119.43806°W / 45.84306; -119.43806
The Umatilla Chemical Depot, (UMCD) based in Umatilla, Oregon, was a U.S. Army installation 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 and VX nerve agents and HD blister agent. All munitions had been safely destroyed by 2011 and base closure operations were expected to be completed by 2015.
The Umatilla Chemical Depot opened in 1941, to prepare for World War II. The depot's mission was to store and maintain a variety of military items, from blankets to ammunition. The depot took on its chemical weapons storage mission in 1962 and stored 12% of the nation's stockpile. From 1990 to 1994 the facility reorganized in preparation for eventual closure, shipping all conventional ammunition and supplies to other installations.