A bill co-sponsored by Colorado Senators Wayne Allard and Ken Salazar will seek to block funding of a study of shipping chemical munitions from storage facilities in Colorado and other states to sites where destruction systems already are in place.
Both senators said earlier this month that they had received assurances from the Pentagon that the mustard gas at Pueblo Chemical Depot would not be shipped out of state. But the Defense Department announced the study the day after their meeting with the senators.
The measure is expected to be introduced Tuesday by Allard and co-sponsored by Salazar.
The Army depot at Pueblo is one of two chemical-weapons sites that don't have destruction systems in place yet.
The additional costs of the war in Iraq has delayed funding of multi-million dollar destruction systems at Pueblo and the Blue Grass Army Depot near Richmond, Kentucky.
Sites with disposal facilities constructed or in operation are located in Alabama, Arkansas, Indiana, Maryland, Oregon and Utah.