Disposal of one-ton containers of mustard agent has resumed at the Umatilla Chemical Depot after an annual maintenance outage at a metal parts furnace in the Umatilla Chemical Agent Disposal Facility.
It will operate at 50 percent of the permitted burn rate while officials from the Oregon Department of Environmental Quality analyze data from some test burns.
The outage began June 28, and disposal started again late Tuesday. Before that, 14.2 percent of the disposal facility's mustard agent stockpile had been destroyed, according to the depot. The Army is disposing of the mustard ton containers to meet the Chemical Weapons Treaty Convention deadline of April 2012.
"We will do all we can to comply with the international treaty, but safety guides the schedule," said Steve Warren, project general manager for URS, the company that built and operates the facility.