The Pueblo Chemical Agent-Destruction Pilot Plant team is committed to destroying the chemical weapons stockpile at the U.S. Army Pueblo Chemical Depot while protecting the workforce, public and environment.

The PCAPP team fulfills this commitment by adhering to numerous local, state and federal laws and regulations. This includes the Resource Conservation and Recovery Act, which gives the U.S. Environmental Protection Agency authority to control hazardous waste, including generation, transportation, treatment, storage and disposal, to protect human health and the environment.

In addition, PCAPP operates under a hazardous waste permit from the Colorado Department of Public Health and Environment. This permit was granted after numerous Army studies determined the destruction of the stockpile would have no significant impacts to human health or the environment. Throughout the lifecycle of the plant, any major permit modifications require a public comment period and approval by the state.

Learn more about our permits and environmental activities by accessing the links and information on this page, or by contacting the Pueblo Chemical Stockpile Outreach Office at or (719) 546-0400.

Recent Permitting Activity

On May 17, 2023, the Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP) received two Static Detonation Chamber Class 2 Permit Modification Requests (PMR) approvals from the Colorado Department of Public Health and Environment (CDPHE).

Permit Modification Request and Amendment #S015 provides processing of overpacks including Single Round Containers and Propelling Charge Containers at the Static Detonation Chamber (SDC) complex.

Overpacks contain leakers, rejects and separately packed energetics from 155mm, 105mm projectiles and 4.2-inch mortar round campaigns, that could not be processed at the PCAPP main plant.


Permit Modification Request and Amendment to #S021 adds steps to SDC Contingency Procedure that initiates perimeter monitoring in the event of a potential release of agent outside of the SDC complex footprint.

The amendment to PMR S021 changes a federal agency name change from CAIRA – Chemical Accident or Incident Response and Assistance, to CIMRA – Chemical Incident or Mishap Response and Assistance.


Providing this Class 2 permit modification notification of approval is consistent with the Colorado Hazardous Waste Regulations, 6 CCR 1007-3, Section 100.63(f)(1).

To see the most recent updated permit, please visit the CDPHE web site:

Key Permit Documents

Resource Conservation and Recovery Act Permit

Environmental Impact Statement

Explore PCAPP Permitting History:

Get involved.

Public Meetings:

Plant and permitting updates are provided during public meetings known as the Colorado Chemical Demilitarization Citizens’ Advisory Commission. Please see below for future meeting dates and forums.

View meeting summaries from previous CAC meetings.

Information Repositories:

Information regarding the Pueblo Chemical Agent-Destruction Pilot Plant project is available at various community locations. Inquiries should be directed to Ron Eccher, Public Outreach Manager,

  • The official and primary information repository for the PCAPP project can be found at Robert Hoag Rawlings Public Library located at 100 E. Abriendo Ave., Pueblo, Colorado, 81004. This repository has every current document associated with the Resource Conservation and Recovery Act (RCRA) process as it pertains to the PCAPP project.
  • Additional repositories are located in the following locations:
    • McHarg Park Community Center
      405 2nd Lane
      Avondale, CO 81022
    • Boone Community Center
      421 E. First St.
      Boone, CO 81025

For a complete list of documents available at the Information Repositories, please see the Index.

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