US Army Camp Bonneville
Facility Site ID:
69965472
Cleanup Site ID:
11670
Recent Public Involvement
In 2022, we held an online listening session that included a brief presentation on the site’s background and its status at the time, followed by public questions and comments.
Want to watch the session? Find the recording on YouTube
We received a lot of feedback, carefully reviewed each comment, and addressed the major topics of concern. The Response to Comments, 2022 Public Listening Session summarizes the key issues raised and our responses.
Want to watch the session? Find the recording on YouTube
We received a lot of feedback, carefully reviewed each comment, and addressed the major topics of concern. The Response to Comments, 2022 Public Listening Session summarizes the key issues raised and our responses.
Sign Up For Updates
Public input is part of Washington’s cleanup process. We ask for comments from the public on key studies and planning documents. Sign up to get an email when there is an opportunity to get involved.
General Cleanup Process
The Model Toxics Control Act (MTCA) is Washington’s environmental cleanup law. It provides requirements for contaminated site cleanup and sets standards that protect human health and the environment. Ecology enacts MTCA and oversees cleanups. The MTCA site cleanup process is completed in steps over a variable timeline.
Site Information & Historical Use
Camp Bonneville was a military training site used by the U.S. Army and other branches from 1909 until it closed in 1995. It included rifle, grenade, machine gun, and artillery ranges, as well as barracks and support buildings. The property was used for training by active-duty soldiers, ROTC, the National Guard, and the Marine Corps. In 2006, the Army transferred the land to Clark County to be turned into a regional park.
How The Site Became Contaminated
During its use as a military training site, a wide range of activities took place that led to contamination. These included live-fire exercises, munitions disposal, the use of tear gas during riot control training, landfill operations, use of chemicals like fuels and solvents, and vehicle and equipment maintenance. These actions left behind both hazardous substances and military munitions in the ground.
Contamination
The site has several types of contamination due to past land use of the property. Some of these contaminants are present in soil and groundwater at the site above state cleanup levels. This includes:
- Volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs)
- Explosive residues and perchlorates
- Pesticides and herbicides
- Petroleum products
- Metals
- Military munitions, such as UXO, have been identified at the site and may still be present
Cleanup History
Cleanup efforts have been ongoing since the site closed in 1995. First, the cleanup was managed by the US Army under federal regulations. Then, Washington State Department of Ecology began providing oversight of the cleanup with an enforcement order in 2003.
The site has been administratively divided into separate remedial action units (RAUs), each with its own cleanup focus. Work has included removing military munitions and other sources of contamination, cleaning up contaminated soil, and placing restrictions on land use to protect people and the environment. Groundwater monitoring continues on a quarterly basis and cleanup of the last remaining RAU is ongoing.
The site has been administratively divided into separate remedial action units (RAUs), each with its own cleanup focus. Work has included removing military munitions and other sources of contamination, cleaning up contaminated soil, and placing restrictions on land use to protect people and the environment. Groundwater monitoring continues on a quarterly basis and cleanup of the last remaining RAU is ongoing.
Site Use Restrictions Are In Effect
Following cleanup actions, some contamination remains on site. To ensure the site remains protective of human health and the environment for future public use, long-term monitoring and land use restrictions, called institutional controls, are in place. These may include fences, signs, or limits on how the property can be used. For example, an institutional control may prohibit disturbing a protective cover that isolates contamination or not allowing public access in certain areas.
Because institutional controls are in effect, Ecology is required to conduct periodic reviews at least every five years to ensure the cleanup continues to protect human health and the environment.
Because institutional controls are in effect, Ecology is required to conduct periodic reviews at least every five years to ensure the cleanup continues to protect human health and the environment.
Available Documents
The documents listed below relate to RAUs. Additional information can be found at the document repositories linked on this page.
| RAU |
Cleanup |
Description |
Cleanup Status |
| RAU -1 Hazardous Waste |
1513 | Consists of 20 areas where hazardous substances (other than military ammunition) have been found. |
Cleanup is complete |
| RAU - 2A (Small Arms Ranges) |
3867 | Covers lead contamination at 21 small arms ranges. | Cleanup is complete |
| RAU - 2B Munitions Disposal Areas |
2522 |
Consists of explosive chemical contamination at two demolition areas (demolition areas 2 and 3) where ammunitions were either burned or detonated. |
Cleanup is complete |
| RAU - 2C Munitions Disposal Area/Solid Waste | 861 | Covers explosive chemicals and perchlorate contamination at a landfill area that was also used to burn or detonate ammunition including Demolition Area 1/Landfill 4. | In progress. The soil removal action is complete. Groundwater investigation and cleanup planning is underway. Monitoring continues. |
| RAU - 3 Unexploded Ordnance and munitions |
2216 | Includes the entire site where unexploded ordnance and munitions are located. Cleanup was completed in four phases. | Cleanup is complete Phase 1 Phase 2 Phase 3 Phase 4 |
Questions?
Please reach out to Ecology for questions regarding the cleanup or you may contact the Clark County Public Works Land Management Division:
Betsy Wing
Compliance Manager
Email: betsy.wing@clark.wa.gov
Phone: 360-980-2289
Kevin Tyler
Division Manager
Email: kevin.tyler@clark.wa.gov
Phone: 564-397-1656
Betsy Wing
Compliance Manager
Email: betsy.wing@clark.wa.gov
Phone: 360-980-2289
Kevin Tyler
Division Manager
Email: kevin.tyler@clark.wa.gov
Phone: 564-397-1656
Documents 100
Legal 13
Map 2
| Document Title | Document Date | Document Type |
| Camp Bonneville Regional Location | 10/13/2006 | Map |
| Camp Bonneville Exhibit A | 10/13/2006 | Map |
Outreach Information 35
State Environmental Policy Act 5
| Document Title | Document Date | Document Type |
| SEPA Determination and Checklist for CITA Emergency Interim Action | 1/18/2007 | SEPA Documents |
| Camp Bonneville SEPA Determination for MEC Surface Interim Action for RAU - 2A and 3 | 1/1/2007 | SEPA Documents |
| Camp Bonneville Revised SEPA Determination of NonSignificance, CITA Fence | 9/27/2006 | SEPA Documents |
| Camp Bonneville SEPA Determination of NonSignificance, CITA Fence | 8/1/2006 | SEPA Documents |
| Camp Bonneville SEPA Checklist for CITA Fence | 8/1/2006 | SEPA Documents |
Technical Reports 45
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.
Places to see print documents
-
Headquarters300 Desmond Dr SELacey, 98503Please schedule an appointment to view print documents at this location.
-
Vancouver Public Library901 C StreetVancouver, 98660This location may only have print documents available during open comment periods.
Contaminants 10
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Metals - Metals - Other | C | C | ||||
| Pesticides - Halogenated Pesticides | C | |||||
| Non-Halogenated Organics - Non-Halogenated Solvents | C | |||||
| Halogenated Organics - Halogenated Solvents | C | |||||
| Other Contaminant - Conventional Contaminants, Organic | C | C | ||||
| Halogenated Organics - Other Halogenated Organics | C | C | ||||
| Non-Halogenated Organics - Other Non-Halogenated Organics | C | C | ||||
| Reactive Wastes - Other Reactive Wastes | C | C | ||||
| Non-Halogenated Organics - Petroleum-Other | C | C | ||||
| Pesticides - Non-Halogenated Pesticides | C | C |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.
Public Comment Period
We regularly visit and review sites that have remaining contamination to ensure the cleanup is still protecting people and the environment. We visited the Camp Bonneville cleanup site in December 2024 and May 2025. Based on this visit and reviewing documents, we make several recommendations in the periodic review report:
- Amend cleanup action plans where needed to add more institutional controls and clarify existing control requirements.
- Amend consent decree to clarify which organization or agency is responsible for what work.
- Identify additional protective covenants needed to ensure long-term protectiveness of cleanup.
- Create long-term operations and maintenance manual, as required in the existing cleanup action plan and consent decree.
We invite you to review and comment on:You are invited to an Open House (in-person)
When:
December 10, 2025, from 5:30 PM to 8:00 PM
Where:
Hockinson Middle School Cafeteria | Map
15916 NE 182nd Avenue
Brush Prairie, WA 98606
Come meet Ecology's new Camp Bonneville Team including the site manager and unexploded ordnance (UXO) expert. We will host a meet and greet with display posters, a 45-minute presentation about the Draft First Periodic Review Report and have an informal question and answer session.
Want to have your comments or questions documented? Leave us a public comment by visiting our Public Comment Form or you can submit your comments or questions in person at the open house.