• COVID-19
  • Progress
  • eNewsletter Sign-Up
  • Frequently Asked Questions
  • Give Feedback
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)
  • HOME
  • PEO ACWA
    • ACWA logo

      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

    • About PEO ACWA
      • Destruction Progress
      • Chain of Command
      • Team Biographies
      • Program Timeline
      • Program Legislation
      • Public Involvement
      • Frequently Asked Questions
    • PEO ACWA Media Library
      • PEO ACWA News
      • PEO ACWA Videos
      • PEO ACWA Facts
      • PEO ACWA Press Releases
      • PEO ACWA Briefings, Reports & Downloads
  • BLUE GRASS
    • pcapp_logo
      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.

    • BGCAPP Homepage
      • Project Stages
      • Destruction Technologies
      • Team Biographies
      • Environmental Activities
      • Public Involvement
      • Hydrolysate Shipments
    • BGCAPP Media Library
      • News
      • Videos
      • Facts
      • Press Releases
      • Briefings, Reports & Downloads
  • PUEBLO
    • pcapp_logo
      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.

    • PCAPP Homepage
      • Project Stages
      • Destruction Technologies
      • Team Biographies
      • Environmental Activities
      • Public Involvement
    • PCAPP Media Library
      • News
      • Videos
      • Facts
      • Press Releases
      • Briefings, Reports & Downloads
  • CONTACT US

Facts: Characteristics of GB Nerve Agent

Published: April 25, 2022 | Category: PEO ACWA Facts

The Program Executive Office, Assembled Chemical Weapons Alternatives, known as PEO ACWA, is responsible for the safe and environmentally compliant destruction of the remaining U.S. chemical weapons stockpile stored at the U.S. Army Pueblo Chemical Depot in Colorado and the Blue Grass Army Depot in Kentucky. The safe, secure storage of the stockpiles in the U.S. Army inventory is the responsibility of the U.S. Army Chemical Materials Activity (CMA).

The ACWA program is responsible for destroying the last remaining type of nerve agent-filled weapons in the original Kentucky stockpile. The agent is known by the military designation GB. The original stockpile in Kentucky comprised 523 U.S. tons of nerve and mustard agents in rockets and projectiles, with approximately 432 tons of that quantity consisting of nerve agents VX and GB, each in rockets and projectiles. All VX nerve agent in the U.S. stockpile has been destroyed as of April 2022.

Currently, the program is operating state-of-the art pilot plants that are safely and efficiently destroying these stockpiles. Operations are on target for completion by the Chemical Weapons Convention treaty commitment of Sept. 30, 2023. U.S. Public Law mandates stockpile destruction by Dec. 31, 2023.

What are nerve agents?

Nerve agents are members of the organophosphate family.

Nerve agent GB, also known as sarin, is one of the most toxic members of the organophosphate family. Under normal conditions, it is a clear- to straw-colored liquid and has approximately the same density and evaporation rate as water.

GB presents the greatest hazard when released in vapor form. Such vapors can be released only by evaporation of the liquid or vaporization into the air.

Have nerve agents previously been destroyed in the U.S.?

As a signatory to the Chemical Weapons Convention, the U.S. successfully completed the destruction of nearly 90% of its original chemical weapons stockpile in January 2012, via CMA. The remaining U.S. chemical weapons stockpile near Richmond, Kentucky and in Pueblo, Colorado, represent the 10% for which PEO ACWA is responsible.

Nerve agent VX in bulk containers was previously destroyed at Newport, Indiana. In addition, chemical weapons containing both nerve agents GB and VX have been previously destroyed at Anniston, Alabama; Pine Bluff, Arkansas; Umatilla, Oregon; Tooele, Utah; and Johnston Atoll, a group of islands about 800 miles southwest of Hawaii.

Are nerve agents harmful?

Nerve agents were designed to injure and kill by binding to cholinesterase, an enzyme of the human body that is essential for functioning of the nervous system. They also produce a range of neurological disorders followed by paralysis and cardiovascular or respiratory failure. Nerve agents inhibit the action of the enzyme, preventing messages from the brain from reaching the nerve endings. As a result, hyperactivity occurs in the organs stimulated by these nerves. Nerve agents can affect both the respiratory muscles and the respiratory center of the nervous system. The combination of these two effects cause death by respiratory failure.

What are the signs of exposure?

In the unlikely event of an accident or incident involving GB nerve agent, avoiding agent vapor is the primary goal. Low-dose symptoms may include increased saliva production, runny nose, deterioration of short-range vision and hallucinations. Higher-dose symptoms may include difficulty breathing, vomiting, sweating and convulsions. The severity of exposure depends on how much nerve agent is in the vapor and the length of time of exposure. Anyone with symptoms of nerve agent exposure should call for medical help immediately and follow instructions.

Download Fact Sheet
No tags.

PEO ACWA Media Library

  • PEO ACWA Media Library
  • PEO ACWA News
  • PEO ACWA Videos
  • PEO ACWA Facts
  • PEO ACWA Press Releases
  • PEO ACWA Briefings and Reports

Connect with PEO ACWA

Sign Up for Our Newsletter

Sign up for the Connect with ACWA e-newsletters to have information sent directly to your inbox. It’s a great way to stay connected with chemical weapons destruction plant activities.

Sign Up

Recent Tweets
  • Terms of Use
  • Freedom of Information Act
  • Privacy and Security Policy
  • iSALUTE
  • Archive
  • Welcome to ACWA
  • Home
  • PEO ACWA Pages
    • About PEO ACWA
    • Destruction Progress
    • Team Biographies
    • Chain of Command
    • Program Timeline
    • Public Involvement
  • PEO ACWA Media Library
    • PEO ACWA Media Library (Main)
    • PEO ACWA News
    • PEO ACWA Videos
    • PEO ACWA Facts
    • PEO ACWA Press Releases
    • PEO ACWA Briefings and Reports
    • Frequently Asked Questions
  • Blue Grass Pages
    • BGCAPP Homepage
    • BGCAPP Project Stages
    • BGCAPP Destruction Technologies
    • BGCAPP Team Biographies
    • Environmental Activities at BGCAPP
    • Public Involvement at BGCAPP
    • Hydrolysate Shipments
  • BGCAPP Media Library
    • BGCAPP Media Library (Main)
    • BGCAPP News
    • BGCAPP Videos
    • BGCAPP Facts
    • BGCAPP Press Releases
    • BGCAPP Briefings, Reports and Downloads
  • Pueblo Pages
    • PCAPP Homepage
    • PCAPP Project Stages
    • PCAPP Destruction Technologies
    • PCAPP Team Biographies
    • Environmental Activities at PCAPP
    • Public Involvement at PCAPP
  • PCAPP Media Library
    • PCAPP Media Library (Main)
    • PCAPP News
    • PCAPP Videos
    • PCAPP Facts
    • PCAPP Press Releases
    • PCAPP Briefings, Reports, and Downloads
  • Archive
  • Job and Business Opportunities
  • Contact Us
  • Freedom of Information Act
  • Privacy and Security Policy
Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)