The United States has been in the process of destroying its chemical munitions for well over a decade. Initially, the . Army, guided by recommendations from the National Research Council (NRC), decided to use incineration as its destruction method at all sites. However, citizens in some states with stockpile storage sites oppose incineration on the grounds that the exact nature of the effluents escaping from the stacks cannot be determined. The Army has continued to pursue incineration at four of the eight storage sites in the continental United States where that process seemed appropriate. Nevertheless, influenced by growing public opposition to incineration and the 1996 NRC report Review and Evaluation of Alternative.