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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: Destroy Chemical Weapons Stockpile

      Vision: Chemical Weapons Free by 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 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 information
PCAPP Destruction information

The U.S. Army Pueblo Chemical Depot originally stored more than 2,600 tons of the blister agent mustard in projectiles and mortar rounds.

Storage igloos at  The U.S. Army Pueblo Chemical Depot 155mm projectile 155mm Projectiles 105mm Projectiles 105mm projectile 4.2-inch Mortar Rounds 4.2-inch mortar round CAMPAIGN COMPLETE: SEPT. 5, 2020 CAMPAIGN UNDERWAY FUTURE CAMPAIGN 155 155mm Projectiles The 155mm projectile is a World War II-type munition. Both the M104 and M110 projectiles contain approximately 12 lbs. of blister (mustard) agent. Colored bands, signifying the chemical agent contained in the munition, mark the outside of the projectile casings. The shell contains an adapter and burster casing that screw into the nose of the shell, also allowing a fuze to be screwed into the nose of the projectile. CLOSE PCAPP 155mm projectile CAMPAIGN INITIATED: SEPT. 7, 2016 CAMPAIGN COMPLETE: SEPT. 5, 2020 105 105mm Projectiles The 105mm projectile is a World War II-type munition. The projectile contains approximately 3 lbs. of blister (mustard) agent. Colored bands, signifying the chemical agent within the munition, mark the outside of the projectile casings. The shell contains an adapter and booster casing that screw into the nose of the shell, allowing a fuze to be screwed into the nose of the projectile. CLOSE PCAPP 105mm projectile CAMPAIGN INITIATED: DEC. 11, 2020 4.2 4.2-inch Mortar Rounds The 4.2-inch mortar round, produced in the United States, consists of a one-piece forged steel-case projectile body with fuze, burster and tail assembly. Each munition contains approximately 6 lbs. of agent that is sealed inside with a steel burster well. The shell contains a perforated vane assembly welded to the inside of the body, designed to accommodate the burster tube extending from the fuze. The tail assembly consists of a pressure plate and rotating disk, propelling charge, cartridge container, ignition cartridge and striker nut assembly. CLOSE PCAPP 4.2-inch mortar round PENDING DESTRUCTION

PCAPP aerial image October 2019. PCAPP is safely destroying the stockpile of chemical weapons in storage at the U.S. Army Pueblo Chemical Depot in Colorado. Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP) *Employment and payroll figures as of 31 December 2020; Quantity Destroyed as of 22 January 2021.

Chemical Weapons Destruction Technologies

Technologies chosen to safely destroy the Pueblo stockpile.

MAIN PLANT

START DATE: SEPT. 7, 2016
STATUS: OPERATIONAL
neutralization followed by biotreatment

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 TECHNOLOGY

START DATE: MARCH 18, 2015
END DATE: DEC. 5, 2018

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 destroyed.

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STATIC DETONATION CHAMBER

START DATE: PENDING
STATUS: SYSTEMIZATION
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

Three Static Detonation Chamber (SDC) units will augment the main plant by destroying all remaining 4.2-inch mortar rounds in the Colorado stockpile and other munitions that were rejected for processing in the main facility.

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Upcoming Meetings

Due to COVID-19, future public meetings will not be held in person until further notice. Please check back soon for additional information.

Colorado Citizens’ Advisory Commission, Permitting Working Group and Biotreatment Utilization Group Meetings will be held online on Jan. 27, 2021, from 2 – 4 p.m. MST. (The meeting will open at 1 p.m. for those needing assistance.)

2 p.m. – Permitting Working Group/Biotreatment Utilization Group
2:30 p.m. – Colorado Citizens’ Advisory Commission

There are two ways to join this Google Meet event:

Computer: meet.google.com/qog-eewk-umq
Phone: 1 (413) 276-7774 PIN: ‪727 165 557#

For information, please contact the Pueblo Chemical Stockpile Outreach Office at (719) 546-0400, or pueblooutreach@iem.com

Colorado Citizens’ Advisory Commission, Permitting Working Group and Biotreatment Utilization Group Meetings will be held on Feb. 24, 2021.

For information, please contact the Pueblo Chemical Stockpile Outreach Office at (719) 546-0400, or pueblooutreach@iem.com

Colorado Citizens’ Advisory Commission, Permitting Working Group and Biotreatment Utilization Group Meetings will be held on April 28, 2021.

For information, please contact the Pueblo Chemical Stockpile Outreach Office at (719) 546-0400, or pueblooutreach@iem.com

Recent PCAPP News

Strict Protocols Keep Pueblo Plant Safe

Strict Protocols Keep Pueblo Plant Safe

20 January 2021

PCAPP Monthly Recap – December 2020

4 January 2021
Pueblo Plant Achieves Significant Milestones in 2020

Pueblo Plant Achieves Significant Milestones in 2020

22 December 2020
Static Detonation Chamber Units Begin Testing

Static Detonation Chamber Units Begin Testing

22 December 2020

Recent PCAPP Videos

Pueblo Plant Progress - December 2020

Pueblo Plant Progress – December 2020

29 December 2020
Processing Begins on the 105mm Projectiles at Pueblo Plant

Processing Begins on the 105mm Projectiles at Pueblo Plant

18 December 2020
Pueblo Team Prepares to Destroy 105mm Munitions

Pueblo Team Prepares to Destroy 105mm Munitions

11 December 2020
Dec. 9 Colorado Chemical Demilitarization Citizens’ Advisory Commission Meeting (2020)

Dec. 9 Colorado Chemical Demilitarization Citizens’ Advisory Commission Meeting (2020)

10 December 2020
“We’re able to not only help our community, but also the nation.”
Mechelle C.B.
GC/MSD/FPD Operator
Mechelle C.B. PCAPP GC/MSD/FPD Operator
“I’m proud of processing data and to be able to stand by the results we produce every day.”
Peter David P.
HPLC Operator/Research Scientist
Peter David P. PCAPP HPLC Operator/Research Scientist
“It feels great to be a part of history, making this world a safer place for generations to come.”
Marcus H.
Control Room Operator
Marcus H. PCAPP Control Room Operator
“Other people might think that this might be a dangerous job but safety has been a big key here.”
Philip M.
Senior Monitoring Technician
Philip M. PCAPP Senior Monitoring Technician

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