| Umatilla Chemical Agent Disposal Facili | Closure | OR | Hermistion | 11 | Jan 2, 2013 | Mar 7, 2013 | |
| Umatilla Chemical Agent Disposal Facili | Closure | OR | Hermiston | 178 | Dec 11, 2012 | Feb 14, 2013 | |
| Umatilla Chemical Agent Disposal Facili | Closure | OR | Hermiston | 1 | May 31, 2012 | Jun 6, 2012 | |
| Umatilla Chemical Agent Disposal Facili | Closure | OR | Hermiston | 17 | Jan 12, 2012 | Apr 12, 2012 | |