Though never used by the United States, chemical weapons were stockpiled by the U.S. Army
at a number of bases during and after World War II. In 1985, Congress decided to turn the aging weapons into a harmless part of history.
The Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP) is a state-of-the-art facility built to safely and efficiently destroy the chemical weapons stockpile currently in storage at the U.S. Army Pueblo Chemical Depot near Pueblo, Colorado.
The Bechtel Pueblo Team, which includes Bechtel, URS, Battelle Memorial Institute, and Parsons Infrastructure and Technology, won the competition in 2002 to design, build, test, operate, and ultimately close PCAPP after destroying the stockpile.
More than 2,600 tons of mustard agent in artillery projectiles and mortar rounds stored here. After the chemical weapons have been eliminated, the plant will be closed in an environmentally responsible manner. Unlike other demilitarization facilities, this one dismantles munitions using a first-of-a-kind robotic process.
Bechtel is also building the Blue Grass Chemical Agent-Destruction Pilot Plant
in Richmond, Kentucky.