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Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)
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      Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)


      Mission: The safe elimination of chemical weapons at Pueblo and Blue Grass by Sept. 30, 2023

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  • BLUE GRASS
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      Blue Grass Chemical Agent-Destruction Pilot Plant (BGCAPP)

      BGCAPP is safely destroying the chemical weapons stockpile currently in storage at the Blue Grass Army Depot near Richmond, Kentucky.

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  • PUEBLO
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      Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP)

      PCAPP is safely destroying the chemical weapons stockpile currently in storage at the U.S. Army Pueblo Chemical Depot in Colorado.

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PCAPP Destruction Technologies

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  • PCAPP Destruction Technologies
    • Neutralization Followed by Biotreatment
    • Explosive Destruction System
    • Static Detonation Chamber
  • Contingency Planning for Off-site Shipment of Hydrolysate at Pueblo Chemical Depot
  • National Environmental Policy Act (NEPA) Background Information
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    • Archive: Environmental Activities at PCAPP
Home Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP) PCAPP Destruction Technologies

Mission and Safety

The Pueblo Chemical Agent-Destruction Pilot Plant, or PCAPP, is safely and efficiently destroying the stockpile of chemical weapons currently in storage at the U.S. Army Pueblo Chemical Depot, or PCD, since the 1950s. The Department of Defense’s Program Executive Office, Assembled Chemical Weapons Alternatives, known as PEO ACWA, is responsible for safely destroying the depot’s mustard agent-filled projectiles, thereby eliminating the risk associated with continued storage. The safety of the workforce, neighboring communities, and the environment remains the program’s top priority.

Chemical Weapons Destruction Technologies

Technologies chosen to safely destroy the Pueblo stockpile.

PCAPP ordnance technician uses lift assist in Enhanced Reconfiguration Building

Neutralization Followed by Biotreatment

The Assembled Chemical Weapons Alternatives program, the U.S. Army Pueblo Chemical Depot and the community worked together to select neutralization followed by biotreatment to destroy the chemical weapons stored at the depot.

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Explosive Destruction System

The Explosive Destruction System, or EDS, augmented the pilot plant to destroy a number of problematic munitions that could not be easily destroyed by the main plant’s automated equipment. During two campaigns from March 2015 to December 2018, the EDS eliminated 951 items resulting in 3.82 tons of mustard agent.

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Three Static Detonation Chamber (SDC) units will augment the main plant by destroying all problematic munitions, including the 4.2-inch mortar rounds.

Static Detonation Chamber

The Static Detonation Chamber (SDC) complex is part of the chemical weapons destruction process at the Pueblo Chemical Agent-Destruction Pilot Plant. Three thermally heated detonation chambers in the SDC complex are augmenting the main plant by eliminating 4.2-inch mortar rounds and overpacked munitions.

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Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)