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.

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.


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.

Final Environmental Impact Statement

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

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.


Air Permit


Resource Conservation and Recovery Act (RCRA) Major Milestones

February 2024: Class 2 Permit Modification Request B073, Equipment Disassembly and Containerization

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 required Colorado Department of Public Health and Environment approval.

PMR B073 proposed 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.

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.

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

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

January 2024: Class 2 Permit Modification Request, B071, Closure Plan

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. 

June 2023: Class 2 Permit Modification Request, B071, Closure Plan

The U.S. Army and Bechtel National, Inc., applied for a Class 2 Permit Modification Request B071 – Closure Plan and the development of a Closure Waste Analysis Plan.

The public comment period ran from June 23 through Aug. 22, 2023.

June 2023: Class 2 Permit Modification Request S028, Closure Plan and the development of a Closure Waste Analysis Plan.

The U.S. Army and Bechtel National, Inc., applied for a Class 2 Permit Modification Request S028 – Closure Plan and the development of a Closure Waste Analysis Plan.

The public comment period ran from June 23 through Aug. 22, 2023.

May 2023: Permit Modification Request and Amendment S015 and S021 Approved

On May 17, 2023, the Pueblo Chemical Agent-Destruction Pilot Plant received two Static Detonation Chamber (SDC) Class 2 Permit Modification Request approvals from the Colorado Department of Public Health and Environment – S015 and S021

Permit Modification Request (PMR) 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.

March 2023: Class 2 Permit Modification Request S014, Bin Monitoring and Process Ventilation Updates

The U.S. Army and Bechtel National, Inc., applied for a Class 2 Permit Modification Request S014, Bin Monitoring and Process Ventilation Updates.

The public comment period ran from March 7 through May 6, 2023.

February 2023: Class 2 Permit Modification Request S015, Overpacks Processing

The U.S. Army and Bechtel National, Inc., applied for a Class 2 Permit Modification Request.

The public comment period ran from Feb. 21 through April 22, 2023.

February 2023: Class 2 Permit Modification Request S020, Static Detonation Chamber Closure Plan Updates

The U.S. Army and Bechtel National, Inc., applied for Class 2 Permit Modification Request S020, Static Detonation Chamber Closure Plan Updates.

The public comment period ran from Feb. 6 through April 7, 2023.

February 2023: Class 2 Permit Modification Requests B060 and B061, Waste Analysis Plan

The U.S. Army and Bechtel National, Inc., are applying for two Class 2 Permit Modification Requests, B060 and B061:

B060, Waste Analysis Plan, Table D-8-1, Revisions to 24852-GPP-GGL-00102, -LP003, -LP004 and -LP005

B061, Waste Analysis Plan, Table D-8-1, Revisions to 24852-GPP-GGL-00114, -00203, -MP005 and -MP007

The public comment period ran from Feb. 6 through April 7, 2023.

January 2023: Class 2 Permit Modification Request (PMR) S002, Post-Trial Burn Updates

The U.S. Army and Bechtel National, Inc., applied for Class 2 Permit Modification Request (PMR) S002, Post-Trial Burn Updates.

The public comment period ran from Jan. 3 through March 4, 2023

January 2023: Class 2 Permit Modification Request (PMR) S026, Post Trial Burn – Static Detonation Chamber Waste Analysis Plan Update

The U.S. Army and Bechtel National, Inc., applied for a Class 2 Permit Modification Request (PMR) S026, Post Trial Burn – Static Detonation Chamber Waste Analysis Plan Update.

The public comment period ran from Jan. 3 through March 4, 2023

November 2022: Class 2 Permit Modification Request S027, Off-gas Treatment System Spray Dryer Drum Valve

The U.S. Army and Bechtel National, Inc., applied for a Class 2 Permit Modification Request (PMR) S027- Off-gas Treatment System Spray Dryer Drum Valve.

The public comment period ran from Nov. 24, 2022, through Jan. 23, 2023.

October 2022: Class 2 Permit Modification Request S021, Perimeter Monitoring and Static Detonation Chamber Contingency Plan Updates

The U.S. Army and Bechtel National, Inc., applied for a Class 2 Permit Modification Request (PMR) S021, Perimeter Monitoring and Static Detonation Chamber Contingency Plan Updates.

The public comment period ran from Oct. 28 through Dec. 27, 2022.

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.

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.

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:

September 2021: Class 2 Permit Modification Request Submitted

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

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.

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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.

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

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

December 2019: CDPHE Approval of Temporary Authorization #4

December 2019: Pueblo County Approval of Temporary Authorization #4

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

July 2015: 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).

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.

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.


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

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:

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.
  • 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
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