Chemical Weapons Disposal: Plans for Nonstockpile Chemical Warfare Material Can be Improved, Report to the Chairman, Subcommittee on Environment, Energy and Natural Resources, Committee on Government Operations, House of Representatives [open pdf - 2MB]
"This GAO report analyzes the Department of the Army's disposal program for chemical ordnance, materiel, and facilities that are not specifically included in the U.S. stockpile of unitary chemical weapons. These items are referred to as nonstockpile chemical warfare materiel and consist of binary chemical weapons, miscellaneous chemical warfare materiel, recovered chemical weapons, former chemical weapon production facilities, and buried chemical warfare materiel. The Army Chemical Demilitarization and Remediation Activity is responsible for the destruction of certain chemical warfare agents which will bring the U.S. into compliance with the Chemical Weapons Convention. The Army is currently engaged in this process, but certain unknown factors including cost analysis have so far prevented its full implementation."
Government Accountability Office (GAO): http://www.gao.gov/