HOME
PEO ACWA
- 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
- PEO ACWA Media Library
BLUE GRASS
- 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
- BGCAPP Media Library
PUEBLO
- 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
- PCAPP Media Library
CONTACT US

Archive: Environmental Activities at PCAPP

Archive: Environmental Activities at PCAPP

Home Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP) Environmental Activities at PCAPP Archive: Environmental Activities at PCAPP

National Environmental Policy Act (NEPA)

Proposed Installation and Operation of Static Detonation Chambers at Pueblo Chemical Depot

To meet the requirements of the National Environmental Policy Act (NEPA) and Title 32 Code of Federal Regulations Part 651, the U.S. Army conducted an Environmental Assessment (EA) to evaluate the environmental effects of the Army’s proposed action to install and operate one or more Static Detonation Chambers (SDCs) at Pueblo Chemical Depot (PCD) in Colorado. The proposed SDCs would augment the Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP) Main Plant to eliminate current safety and schedule risks associated with the destruction of mustard munitions. SDCs would also be utilized to destroy any agent-contaminated explosive components and overpacked munitions discovered/created during PCAPP Main Plant operations and items recovered during cleanup of solid waste management units (SWMUs) at PCD. The EA concluded that the installation and operation of SDCs will have no significant environmental impacts.

Three public meetings in September allowed the public to discuss and ask questions of the Environmental Assessment and the proposed installation and operation of three Static Detonation Chambers. A 45-day public comment period on the Finding of No Significant Impact also allowed citizens to submit comments. The comment period ran from Aug. 22 to Oct. 6.

Download the Documents:

PCAPP Environmental Activities include those associated with the National Environmental Policy Act (NEPA) and the Resource Conservation and Recovery Act (RCRA). Recent NEPA activity includes updating the 2012 Environmental Assessment (ongoing). Recent RCRA activities include modifications to the RCRA RD&D permit including related public meetings.

Environmental Assessment (EA)

For more information, please visit our NEPA Background Information page.

Notice of Availability

April 2002: Notice of Availability published in Federal Register

Notice of Availability of the Final Environmental Impact Statement for the Disposal of Chemical Munitions at the U.S. Army Pueblo Chemical Depot, Colorado.

Download

May 2001: Notice of Availability published in Federal Register

Notice of Availability of the Draft Environmental Impact Statement for the Disposal of Chemical Munitions at the U.S. Army Pueblo Chemical Depot, Colorado.

Download

Final Environmental Impact Statement

Final Environmental Impact Statement for the Disposal of Chemical Munitions at the U.S. Army Pueblo Chemical Depot, Colorado.

Download

Record of Decision

July 2002: Record of Decision

Record of Decision for Chemical Stockpile Disposal Project Destruction of the Chemical Agents and Munitions Stored at the U.S. Army Pueblo Chemical Depot, Colorado.

Download

Air Permit

2019

May 2019: Colorado Department of Public Health and Environment Air Pollution Control Division: Construction Permit – 04PB0822

2017

January 2017: Colorado Department of Public Health and Environment Air Pollution Control Division: Construction Permit

Resource Conservation and Recovery Act (RCRA) Major Milestones

July 2022: Class 2 Permit Modification Request B053, Agent Processing Building (APB) Combustible Loading

The Army and Bechtel are applying for a Class 2 Permit Modification Request, B053, Agent Processing Building (APB) Combustible Loading.

A public meeting to discuss this permit modification request was held at 9:30 a.m. on Wednesday, August 31, 2022, at the Pueblo Chemical Stockpile Outreach Office, 104 West B St., Pueblo, CO 81003.

The public comment period ran from July 21, 2022, through Sept. 19, 2022.

June 2022: Class 2 Permit Modification Request B047, New 4.2-inch Mortar Cavity Access Machine Design

The U.S. Army and Bechtel are applying for the Class 2 Permit Modification Request B047, 4.2-inch Mortar Cavity Access Machines (CAMs), a new design for the 4.2-inch mortar CAMs.

The public comment period ran from June 26, 2022, through Aug. 25, 2022.

June 2022: Class 2 Permit Modification Request S012, Baghouse Filter Drum Valve

The U.S. Army and Bechtel applied for a Class 2 Permit Modification Request, S012, Baghouse Filter Drum Valve.

The public comment period ran from June 3 through Aug. 2, 2022.

May 2022: Class 2 Permit Modification Request, B050 FOAK 155mm, to install a First-of-a-Kind 155mm Cavity Access Machine in the Munitions Washout System

The U.S. Army and Bechtel are applying for a Class 2 Permit Modification, B050 FOAK 155mm, to install a First-of-a-Kind 155mm Cavity Access Machine in the Munitions Washout System.

The public comment period ran from May 10 through July 9, 2022.

May 2022: The U.S. Army and Bechtel are applying for a Class 2 Permit Modification Request S011, Rejects Processing

The U.S. Army and Bechtel are applying for a Class 2 Permit Modification S011, Rejects Processing

The public comment period ran from May 10 through July 09, 2022.

May 2022: Class 2 Permit Modification Request, B052 Rejects Processing

The U.S. Army and Bechtel are applying for a Class 2 Permit Modification, B052 Rejects Processing.

The public comment period ran from May 10 through July 09, 2022.

May 2022: Class 2 Permit Modification Request, B055 Flushing Activities for Yard Piping-Revised

The U.S. Army and Bechtel are applying for a Class 2 Permit Modification, B055 Flushing Activities for Yard Piping-Revised

The public comment period ran from May 10 through July 09, 2022.

April 2022: Class 2 Permit Modification Request B046, Waste Analysis Plan – Analysis of Depot Area Air Monitoring System samples

The U.S. Army and Bechtel are applying for the Class 2 Permit Modification Request B046, Waste Analysis Plan, to address the increase in maintenance interference observed during the analysis of Depot Area Air Monitoring System samples.

The public comment period ran from April 21 through June 20, 2022.

March 2022: Class 2 Permit Modification Request S006, proposed revision to address increase in instrument maintenance

The U.S. Army and Bechtel are applying for a Class 2 Permit Modification Request S006, proposed revisions to include laboratory method improvements to address increase in instrument maintenance.

The public comment period ran from April 21, 2022, through June 20, 2022.

February 2022: Class 2 Permit Modification Request B039, Accept Liquid Hazardous Waste from Static Detonation Chamber complex to the Pueblo Chemical Agent-Destruction Pilot Plant Lined Sump

U.S. Army and Bechtel are applying for the Class 2 Permit Modification Request B039, Accept Liquid Hazardous Waste from Static Detonation Chamber complex to the Pueblo Chemical Agent-Destruction Pilot Plant Lined Sump.

The public comment period ran from Feb. 21 through April 22, 2022.

January 2022: Class 2 Permit Modification Request B043, Flushing Activities for Yard Piping

U.S. Army and Bechtel applied for the Class 2 Permit Modification Request B043, Flushing Activities for Yard Piping.

The public comment period for the Class 2 Permit Modification Request B043, Flushing Activities for Yard Piping, ran from Feb. 16, 2022, through April 17, 2022.

January 2022: Pueblo Chemical Depot – Class 2 Permit Modification Request S005, Agent Contaminated Liquid Waste Management

The Army and Bechtel applied for a Class 2 Permit Modification Request:

The public comment period ran from Jan. 13 through March 14, 2022.

January 2022: Class 2 Permit Modification Request B038, Agent Filtration Area Carbon Changeout Requirements, and B045, 30-day Hydrolysate Storage Tanks – Manway Repairs

U.S. Army and Bechtel are now applying for the Class 2 Permit Modification Request B038, Agent Filtration Area Carbon Changeout Requirements.

U.S. Army and Bechtel are now applying for a Class 2 Permit Modification Request, Permit Modification Request B045, 30-day Hydrolysate Storage Tanks – Manway Repairs.

The public comment period for the Class 2 Permit Modification Request B038, Agent Filtration Area Carbon Changeout Requirements, and the Class 2 Permit Modification Request, Permit Modification Request B045, 30-day Hydrolysate Storage Tanks – Manway Repairs, ran from Feb. 8, 2022, through April 9, 2022.

January 2022: Class 2 Permit Modification Request, RCRA Closure Plans

On Jan. 6, the U.S. Army Pueblo Chemical Depot (PCD) submitted the Class 2 Permit Modification Request (PMR) for the Resource Conservation and Recovery Act (RCRA) Closure Plans.

This Class 2 PMR is submitted to request revisions to the PCD RCRA Closure Plans, as well as amendments to the Igloo Closure Plan, 94 Interim Status Igloos. The purpose of the PCD RCRA Closure Plan is to ensure that the PCD hazardous waste management units and the 94 Interim Status Igloos undergo final closure in a manner consistent with applicable requirements.

CDPHERM HAZ ADM – Temporary Web Docs – PCD Class 2 Permit mod closure plans all docs Jan 2022 (2)

January 2022: Class 2 Permit Modification Request S007, Condensate Line and Bleed Water Tank Vent Modifications to the PCD Hazardous Waste Permit No. CO-13-12-23-O1

On Jan. 4, 2022, PCD submitted the Class 2 Permit Modification Request S007, Condensate Line and Bleed Water Tank Vent Modifications to the PCD Hazardous Waste Permit No. CO-13-12-23-O1, for approval.

The public comment period for PMR S007 ran from Jan. 11 through April 4, 2022.

October 2021: Certificate of Designation for the Static Detonation Chambers

The Pueblo Board of County Commissioners voted to pass a resolution approving the Certificate of Designation for the Static Detonation Chambers (SDC), allowing for the start of the SDC units with Phase 1 Trial Burn Testing.

PCAPP CERT OF DESIGNATION-MOD 10 2021

October 2021: SDC Trial Burn Testing Approved

On Oct. 7, 2021, the Colorado Department of Public Health and Environment approved the Final Operating Permit for the Pueblo Chemical Agent-Destruction Pilot Plant Static Detonation Chamber units at the Pueblo Chemical Depot, allowing for Phase 1 of the process, which is Trial Burn Testing.

Supporting documents:

SDC mod approval letter_7Oct2021

CDPHERM_HAZ_PERMIT_#CO-13-12-23-01

RCRA Static Detonation Chamber Final Operating Permit No. CO-13-12-23-01. Click the link to download the permit: https://cdphe.colorado.gov/pcd-hazwastepermit

September 2021: Class 2 Permit Modification Request Submitted

The Army and Bechtel applied for a Class 2 Permit Modification Request, B034 – Closure Plan Update:

PCAPP Permit Modification B034.pdf

A public meeting was held on Sept. 29, 2021. The public comment period ran through Oct. 15, 2021.

June 2021: Class 2 Permit Modification Requests to the Waste Analysis Plan, Table D-8-1

The Army and Bechtel applied for three Class 2 Permit Modification Requests to the Waste Analysis Plan, Table D-8-1 Revisions to 24852-GPP-GGL:

Supporting Documents:

A public meeting was held online June 30, 2021.
The public comment period ran through Aug. 14, 2021.

May 2021: Permit Modification Request B025, Waste Analysis Plan, Appendix 1 LAMP and Appendix 2 LQCP

The Army and Bechtel are now applying for the following Class 2 Permit Modification Request: This permit modification request proposes to update the Laboratory Analysis and Monitoring Plan (LAMP) and Laboratory Quality Control Plan (LQCP). These plans are Appendices 1 and 2 in Attachment D – the Waste Analysis Plan (WAP) – of the PCAPP Permit.

Supporting Documents:

March 2021: Permit Modification B012, 30-day Hydrolysate Storage Tanks – Hydrolysate Air Cooler Bypass

This permit modification request proposes to install carbon steel bypass piping that allows 30-day storage tank hydrolysate flow around the Hydrolysate Air Cooler. The new bypass piping mitigates current air cooler plugging issues that restrict recirculation flow around the 30-day tank system. Cooling of the hydrolysate has historically not been needed; however, the new piping will include valves to allow hydrolysate to flow through the air cooler if cooling is necessary to keep the hydrolysate temperature below the 125° Fahrenheit system temperature.

Supporting documents:

December 2020: Pueblo Chemical Depot – Class 2 Permit Modification – Additional Storage

Temporary Authorization Request – December 14, 2020 start date requested for storage in the igloos to coincide with PCAPP operations of the 105mm campaign.

Download the Document:

Updated Class 2 Meeting

September 2020: PCAPP Issues Permit Modification Request B001, Spent Decontamination System (B05)

This permit modification request proposes permanent modifications to the (B05) Spent Decontamination System design and includes a schedule for the final recovery and permanent repair of the (B05) Spent Decontamination System located in the Agent Processing Building. The proposed changes will incorporate design and operational changes for piping and ancillary equipment in the Spent Decontamination System in the Agent Processing Building. These design changes provide a permanent solution to potential concerns with the condition of the Spent Decontamination System piping. Temporary Authorization for this change is also being requested, which will allow the implementation of the proposed modifications before the permit modification is approved. A public meeting to discuss this permit modification request was held virtually (due to the COVID-19 pandemic), at 2 p.m. on September 30, 2020.

Download the Documents:

- Class 2 Permit Modification B001, Spent Decontamination System (B05) Request
- Class 2 Permit Modification B001, Spent Decontamination System (B05) Public Notice

September 2020: Resource Conservation and Recovery Act Part B Operating Permit Application Approved

Pueblo Chemical Agent-Destruction Pilot Plant was issued its final Hazardous Waste Permit by the Colorado Department of Public Health and Environment on Sept. 2, 2020. The Part B Permit is the Final State Resource Conservation and Recovery Act, or RCRA, Part B Hazardous Waste Operating Permit governs the framework for the treatment of the remaining U.S. chemical weapons stockpile stored in Colorado.

Download the Documents:

To view the entire permit application, please click on the following link: https://www.peoacwa.army.mil/wp-content/uploads/RCRA_Part_b_Permit_Application_Submitted.pdf

July 2020: CDPHE Issues Draft Hazardous Waste Storage and Treatment Permit

May 2020: CDPHE Submits Class II Permit Modification Request

PCAPP Class 2 Permit Modification Request No. 293, Spent Decontamination System (B05) – Recovery Strategy

Feb. 27 and March 5, 2020: PCAPP Submits Two Permit Modification Requests

December 2019: CDPHE Approval of Temporary Authorization #4

CDPHE Approval of Temporary Authorization #4

December 2019: Pueblo County Approval of Temporary Authorization #4

Pueblo County Approval of Temporary Authorization #4

September 2016: CDPHE Acceptance of the Final Site-wide PCAPP Facility Construction Certification

CDPHE Acceptance of the Final Site-wide PCAPP Facility Construction Certification

July 2015: Certificate of Designation (COD)

Certificate of Designation (COD)

December 2014: RCRA Permit Modification Completeness Determination

In order to process PCAPP energetic waste, the Alabama Department of Environmental Management (ADEM) determined that the updated RCRA Permit Modification Request (RMODR39) and the facility’s response to ADEM’s Notice of Deficiency for RMODR39 are complete in accordance with ADEM Admin. Code Rule 335-14-8-.08(2)(d).

Download

October 2008: RCRA Stage 3 Permit Approval Letter

On Oct. 17, 2008, the state health department granted the Stage 3 Permit Modification to the PCAPP RCRA permit. After the state’s required 30-day waiting period, the PCAPP team was authorized to construct the Stage 3 areas of the plant, including facilities used to store and treat munitions, chemical agent and secondary wastes.

Download

2004, 2006: RCRA Permit

RCRA permit issued by Colorado Department of Public Health and Environment (CDPHE). Stage 1, issued in 2004 and modified in 2006, covers site preparation. Stage 2, issued in 2005 and modified in 2006, covers support facilities. An application for Stage 3, covering process buildings, was submitted to CDPHE on Dec. 1, 2006.

To view the RCRA permit, visit the CDPHE website.

Public Notices

For current public notices, please visit the Colorado Department of Public Health and Environment website.

2021

Dec. 20, 2021 – Public Notice – Permit Modification Request – Agent/Water Separators

The permittees at the Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP) submitted the Class 2 Permit Modification Request (PMR) B044 to modify the design of the Agent Water Separator (AWS) tank system specified in PCAPP Permit, No. CC-20-09-02-01, for approval.

July 2021 – Public Notice – Pueblo Chemical Depot Hazardous Waste Incineration Draft Permit Modification

The U.S. Army requested a Class 3 Permit Modification to the Colorado Department of Public Health and Environment proposing to operate three Static Detonation Chamber units to treat mustard agent-filled munitions.

The draft permit can be found online at: cdphe.colorado.gov/HMWMD-public-notices

Download the Class 3 Public Notice SOB PDF

June 2021 – Public Notice – Hazardous Waste Incineration Application – Static Detonation Chamber

Public Notice – Hazardous Waste Incineration Application – Static Detonation Chamber

PUBLIC NOTICE

For Public Review and Comment – Pueblo Chemical Agent-Destruction Pilot Plant

Hazardous Waste Incineration Application Static Detonation Chamber

The Colorado Department of Public Health and Environment invites the public to review and comment on the Parts A and B Class 3 permit modification application for the Pueblo Chemical Depot (PCD) Hazardous Waste permit before the agency determines the application is complete.

The application can be accessed online at:

cdphe.colorado.gov/HMWMD-public-notices

January 2016: Class 2 Permit Modification
April 2016: Class 2 Permit Modification
May 2016: Class 3 Permit Modification
August 29, 2016: Part B Hazardous Waste Operating Permit Application, Resource Conservation and Recovery Act
- Application
- Public Ad
September 2016: CDPHE Acceptance of the Final Site-Wide PCAPP Facility Construction Certification
October 2016: Modification #97, Agent Processing Building (APB) Container Storage Update
December 2016: Modification #106, Removal of Tank MT-B04-0301 Agitators
December 2016: Modification #108, Removal of Tank MT-B04-0101 and Tank MT-B04-0201 Agitators

2015

2014

July 2014: Draft Class 3 Permit Modification

Information Repositories

Collections of information regarding the Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP) project, known as Information Repositories, are available at various community locations.

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.
The Pueblo Chemical Stockpile Outreach Office, located at 104 W. B St. in Pueblo, Colorado, which also houses a project information repository, is now accepting visitors by appointment only in order to safeguard employees and the community from COVID-19. Please call us at (719) 546-0400 to arrange an appointment.
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

Archive: Environmental Activities at PCAPP

National Environmental Policy Act (NEPA)

April 2002: Notice of Availability published in Federal Register

May 2001: Notice of Availability published in Federal Register

Final Environmental Impact Statement for the Disposal of Chemical Munitions at the U.S. Army Pueblo Chemical Depot, Colorado.

July 2002: Record of Decision

Air Permit

Resource Conservation and Recovery Act (RCRA) Major Milestones

Public Notices

Information Repositories

Colorado Department of Public Health and Environment (CDPHE)

Connect with PEO ACWA

Sign Up for Our Newsletter