Pueblo Chemical Agent-Destruction Pilot Plant Monthly Recap – April 2024

Current Project Phase:

Chemical Weapons Destruction at the Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP):

The Pueblo Chemical Agent-Destruction Pilot Plant completed destruction of the U.S. chemical weapons stockpile previously stored at the U.S. Army Pueblo Chemical Depot (PCD) in Colorado on June 22, 2023. The stockpile consisted of 780,089 chemical weapons containing 2,613 U.S. tons of mustard agent.


Project Update:

  • Col. Rodney McCutcheon, commander, PCD, gave a tour of PCAPP to Maj. Gen. Daryl Hood, commanding general, 20th Chemical, Biological, Radiological, Nuclear, Explosives Command, to provide insight into closure progress.
  • Olaf Myhre, mechanical technician, completed his 500th Demilitarization Protective Ensemble (DPE) entry on April 9, when he conducted a maintenance entry into the Munitions Washout System (MWS) to remove Improved Cavity Access Machines (ICAMs) equipment. DPE entries are being conducted as part of closure activities.
  • Michael Strong, compliance manager, PCAPP, provided a plant closure update to Avondale residents at an April 17 event sponsored by PuebloPlex.
  • The U.S. Army Corps of Engineers visited the site April 29 and 30 to provide assistance to the U.S. Army Redstone Arsenal in Huntsville, Alabama, with scheduling and a work plan for transfer of one of the Static Detonation Chamber (SDC) units.
  • Colorado Workforce Center held informational sessions April 12, 15 and 23 for all PCAPP employees covering career assistance services, training and other opportunities that are available to those who will be phasing out of their jobs as the plant progresses through closure.
  • The next PCAPP job fair has been scheduled for June 4-5.

Main Plant:

  • Work completed under Temporary Authorization B073 included removal of the Projectile/Mortar Disassembly system and equipment in the Enhanced Reconfiguration Building (ERB), ICAMs/Cavity Access Machines, robots, and equipment pedestals and baseplates from the MWS as well as removal of some piping from the Toxic Area in the Spent Decontamination System
  • Under the newly approved closure plan, progress is being made with an Occluded Space Survey and start of Unventilated Monitoring Testing in Explosive Containment Room 1 in the ERB. In the Agent Processing Building, crews are removing all power systems (including utility stations, electrical panels and stanchions) that fed into the ICAMs and conveyor systems in the MWS Room and MWS Lines 1 and 2.

Static Detonation Chamber (SDC):

  • The closure plan for the SDC complex (Permit Modification Request B028) remains under review by state regulators as the Colorado Department of Public Health and Environment addresses the PCD Hazardous Waste Permit renewal first.
  • The three SDC units are undergoing routine maintenance, waste management and general housekeeping. Some limited testing has occurred in igloo H1102 that stored SDC munitions during operations, from which readings confirmed there have been no spills or leakers.

Closure-related Activities:

  • The Pueblo Workforce Center continues to host Transition Help Tuesdays at PCAPP. One-on-one sessions are offered to employees, providing guidance and information for employment transition, including resume review, workshops, access to LinkedIn Learning and career coaching programming. Interview and resume workshops continued to be offered in February.

Upcoming Meetings

  • The next Colorado Chemical Demilitarization Citizens’ Advisory Commission meetings will be online at 3 p.m. MT on June 26.

    Individuals interested in joining online can participate using the link and information below.

    Computer: Zoom
    Phone: 1 (719) 359-4580
    Meeting ID:  844 3279 1550#

New to PCAPP?

The Pueblo Chemical Agent-Destruction Pilot Plant, or PCAPP, was built to destroy the chemical weapons stockpile formerly stored at PCD. This video portrays PCAPP operations prior to the June 22, 2023, completion of destruction of the stockpile in Colorado. The main plant used neutralization followed by biotreatment and was supplemented by Static Detonation Chamber units to destroy mustard agent munitions. With destruction operations complete, the safety of the workforce, neighboring communities and the environment during the closure phase remains the project’s priority.

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