Environmental Activities at PCAPP

The Pueblo Chemical Agent-Destruction Pilot Plant team destroyed the chemical weapons stockpile at the U.S. Army Pueblo Chemical Depot and is managing the Closure phase 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 operated 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 required 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 staff at pueblooutreach@iem.com.

Recent Permitting Activity

The Colorado Department of Public Health and Environment recently approved two Permit Modification Requests (PMR) regarding closure activities at the Pueblo Chemical Agent-Destruction Pilot Plant:

  • PMR B071 – On March 29, 2024, CDPHE approved Permit Modification Request (PMR) B071 – Main Plant Closure.
  • PMR B073 – On April 5, 2024, CDPHE approved PMR B073 – Limited Equipment Removal.

The U.S. Army and Bechtel National, Inc., submitted the enclosed Class 2 Permit Modification Request (PMR) B073, Equipment Disassembly and Containerization, to the PCAPP Resource Conservation and Recovery Act Permit, No. CO-20-09-02-01. This request requires Colorado Department of Public Health and Environment approval.

PMR B073 proposes to disassemble, size reduce and containerize Projectile/Mortar Disassembly machines, Cavity Access Machines, Munitions Washout System robots, and previously abandoned equipment/piping from the Toxic Storage and Spent Decon system.

PCAPP Permit Modification B073
PM-B073 Newspaper_Final_05Dec23
PMR B073 Mailer_Final_05Dec23

The U.S. Army and Bechtel National, Inc., also submitted a Temporary Authorization pursuant to 6CCR 1007-3 § 100.63(e), for disassembly and waste containerization of other specific equipment listed in the PMR. The TA was approved by CDPHE on Jan. 3, 2024.

PCAPP Permit Modification B073 TA

A public meeting to discuss the Class 2 Permit Modification Request B073, Equipment Disassembly and Containerization, was held on Jan. 10, 2024.

For information, please contact Sandy Romero, Bechtel Communications Manager, (719) 549-5280 or by email at svromero@bechtel.us or the Pueblo Chemical Stockpile Outreach staff at (719) 549‑4959 or pueblooutreach@iem.com.

The public comment period occurred from Dec. 8, 2023, through Feb. 6, 2024.


The U.S. Army and Bechtel National, Inc., responded Oct. 31, 2023, to the Colorado Department of Public Health and Environment’s latest round of Notice of Deficiency comments for the Class 2 Permit Modification Request (PMR) B071 – Pueblo Chemical Agent-Destruction Pilot Plant Closure Plan, received Oct. 20, 2023. The Class 2 PMR B071 was submitted to the state June 22, 2023. 

Final PMR B071 Mailer CPC
Final PMR B071 Newspaper CPCP
PMR B071_Response to Notice of Deficiency

A public comment period regarding the PMR B071 – Pueblo Chemical Agent-Destruction Pilot Plant Closure Plan occurred from Nov. 28, 2023, through Jan. 15, 2024. 

Copies of PMRs B071, B073, the TA and all enclosures are available for review by the general public during regular business hours at: 

  • Robert Hoag Rawlings Public Library, 100 E. Abriendo Ave., Pueblo, CO 81004 
  • McHarg Community Center, 405 Second Lane, Avondale, CO 81022 
  • Boone Community Center, 421 E. First St., Boone, CO 81025 

Copies of these documents are also available on the following websites:

https://cdphe.colorado.gov/HMWMD-public-notices
https://www.peoacwa.army.mil/pcapp/environmental-activities-at-pcapp

For information, please contact Sandy Romero, Bechtel Communications Manager, (719) 549-5280 or by email at svromero@bechtel.us or the Pueblo Chemical Stockpile Outreach staff at (719) 549‑4959 or pueblooutreach@iem.com.

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 (CAC). 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 Pueblo Chemical Stockpile Outreach staff at pueblooutreach@iem.com.

  • 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, CO 81004. This repository has every current document associated with the Resource Conservation and Recovery Act 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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