Facility Site ID: 2101 Cleanup Site ID: 5059

  • Site Status

  • Cleanup Started

What's New?

Last updated: May, 2024

We are overseeing cleanup of contamination at 
Boeing Developmental Center located at 9725 East Marginal Way South, Tukwila, WA 98108. Thorough sampling of the site began in March 2021 and continues in 2024.  The sampling data will be presented in a 'remedial investigation' report that will be out for public comment in late 2024 or early 2025. They are also currently working on acquiring permits for a shoreline stabilization interim action along the Lower Duwamish Waterway.

You can view the following documents:

Remedial Investigation Work Plan (RIWP): This document describes how and where Boeing will sample for contamination at the site. 

RIWP Sampling and Analysis Plan (SAP): 
This document describes the procedures and required tests that will be used to sample the site for contamination. 

RIWP Quality Assurance Project Plan (QAPP): 
This plan ensures that the data needed to make cleanup decisions is collected and accurate.

Agreed Order: 
Legal agreement with Boeing to conduct a remedial investigation (RI) to determine the location and type of contamination and a feasibility study (FS) to evaluate cleanup methods to meet the requirements of the state cleanup law. 

    Exhibit A: Facility location, see Site Background
    Exhibit B: Facility boundary, see Site Contamination
    Exhibit C: Scope of work and schedule
     
Interim Action Work Plan (Exhibit D) : Describes the ongoing cleanup work.

State Environmental Policy Act (SEPA) Checklist:
Identifies and evaluates if there are significant adverse environmental impacts by the proposed interim cleanup activities.

SEPA Determination of Nonsignificance (DNS): Concludes that Boeing’s interim cleanup activities will have no significant adverse impacts on the environment.

Public Participation Plan:  Creates a process to communicate with and receive feedback from the public about this cleanup.   

What happens next?

We will consider all comments received and may change the documents based on your comments. After that, the Agreed Order will be signed by all parties.  Boeing will proceed with the Interim Action while it conducts the remedial investigation and drafts the feasibility study. 

Why this cleanup matters

The Environmental Protection Agency (EPA) added the 5-mile stretch of the Duwamish River that flows north into Elliot Bay to the Superfund National Priorities List in 2001. The Boeing Developmental Center is one of the sites to be cleaned up there under the EPA's Resource Conservation and Recovery Act. Contaminants in the soil and groundwater around the river pose a risk to human health and the environment. These contaminants can find their way into the river through storm runoff and other pathways.

This site is part of Ecology’s Lower Duwamish Waterway source control efforts because the site has the potential to contribute pollution to the Lower Duwamish Waterway (LDW) Superfund Site.  The sediments (mud) in the river contain a wide range of contaminants due to decades of industrial activity and runoff from urban areas. EPA is leading efforts to clean up the river sediments. We are leading efforts to control sources of contamination from the surrounding land. The long-term goal is to avoid recontamination of the river bottom and restore water quality in the river.

Public comment period fact sheet
Periodo de comentario público: Limpieza del sitio Boeing Developmental Center (Número de páginas: 4) (Tamaño de la publicación: 872KB)  
Khung Thời Gian Góp Ý: Làm Sạch Boeing Developmental Center (SỐ TRANG: 4) (CỠ ĐỘ ẤN BẢN: 1077KB)  

Request Ada Accomodation Or Information In Other Languages

Accommodation Requests: To request ADA accommodation including materials in a format for the visually impaired, call Ecology at 425-649-7000 or visit https://ecology.wa.gov/accessibility. People with impaired hearing may call Washington Relay Service at 711. People with speech disability may call TTY at 877-833-6341.

Para información acerca de la limpieza de la contaminación en el Boeing Developmental Center, llame al 425 649 7253 y espere en la línea por un intérprete.

Để biết thông tin về công tác làm sạch ô nhiễm tại Trung Tâm Phát Triển Boeing (Boeing Development Center), hãy gọi 425 649 7253 và xin chờ thông dịch viên.

Site Background

Boeing Developmental Center location map
Boeing Developmental Center location map

Boeing Developmental Center included multiple laboratories and test facilities supporting airplane and missile research and development.  Boeing used chemicals and generated wastes from manufacturing processes such as electroplating, chemical milling, conversion coating, cleaning parts and photographic processing. Because of those operations, chemicals contaminated soil and groundwater at the site.

Since 1999, Boeing has been cleaning up three areas on the property under Ecology’s Voluntary Cleanup Program. Boeing removed more than 1,400 tons of soil and treated groundwater. Since 2002, they added non-toxic substances to the groundwater to help natural bacteria breakdown the contamination. Boeing will continue their cleanup under the Agreed Order until we approve a cleanup plan for the entire site and it is implemented.

Site Contamination

Boeing Developmental Center facility map identifing areas being cleaned up
Boeing Developmental Center facility map identifing areas being cleaned up

The following chemicals are now or were in the past found in soil and groundwater:

Petroleum products (diesel, gasoline, heavy oil).

Volatile organic compounds (tetrachloroethylene, trichloroethylene, vinyl chloride, benzene, ethyl benzene, toluene, xylene).

Semi-volatile organic compounds (naphthalene).

Metals (arsenic, copper, cadmium).

Polychlorinated biphenyls.

Legal 8
Public Information 4
Document Title Document Date Document Type
Boeing Developmental Center Comment Period Public Notice Mailer Vietnamese 5/23/2019 Fact Sheet\Public Notices
Boeing Developmental Center Comment Period Public Notice Mailer (en espanol) 5/23/2019 Fact Sheet\Public Notices
Boeing DC Public Participation Plan 5/2/2019 Public Participation Plan
Public Notice Mailer, BDC Comment Period 4/23/2019 Fact Sheet\Public Notices
Technical Reports 42
Document Title Document Date Document Type
RIWP QAPP Boeing Developmental Center 2/1/2021 Remedial Investigation Work Plan
RIWP SAP Boeing Developmental Center 1/27/2021 Sampling and Analysis Plan
RIWP Boeing Developmental Center 1/27/2021 Remedial Investigation Work Plan
QAPP - Quality Assurance Project Plan 5/6/2020 Site Specific Technical Document - other
SAP 5/6/2020 Sampling and Analysis Plan
Boeing Development Center - Ecology SHA Rank Letter (Desimone) 2/13/2019 Site Specific Administrative Document - other (Administrative correspondence)
Boeing Development Center - Ecology SHA Rank Letter (Boeing) 2/13/2019 Site Specific Administrative Document - other (Administrative correspondence)
Boeing Development Center - Ecology SHA Rank Letter (D&T) 2/13/2019 Site Specific Administrative Document - other (Administrative correspondence)
Boeing Development Center - Ecology Site Hazard Assessment 1/31/2019 Site Hazard Assessment Report
Boeing DC November 2018 SEMIANNUAL GROUNDWATER MONITORING REPORT 1/22/2019 Remedial Action Report
Boeing Development Center - Ecology SHA Notification Letter (Desimone) 12/13/2018 Site Specific Administrative Document - other (Administrative correspondence)
Boeing Development Center - Ecology SHA Notification Letter (Boeing) 12/13/2018 Site Specific Administrative Document - other (Administrative correspondence)
Boeing Development Center - Ecology SHA Notification Letter (D&T) 12/13/2018 Site Specific Administrative Document - other (Administrative correspondence)
Boeing DC May 2018 SEMIANNUAL GROUNDWATER MONITORING REPORT 7/16/2018 Remedial Action Report
2017 Annual Report, AOC-05 RemedialAction 6/15/2018 Remedial Action Report
Boeing DC SWMU-17 2017 Annual Report 3/27/2018 Remedial Action Report
Boeing DC November 2017 SEMIANNUAL GROUNDWATER MONITORING REPORT 1/26/2018 Remedial Action Report
Boeing DC May 2017 SEMIANNUAL GROUNDWATER MONITORING REPORT 7/20/2017 Remedial Action Report
2016 Annual Report, AOC-05 Remedial Action 6/5/2017 Remedial Action Report
Boeing DC SWMU-17 2016 Annual Report 3/27/2017 Remedial Action Report
Boeing DC November 2016 SEMIANNUAL GROUNDWATER MONITORING REPORT 1/24/2017 Remedial Action Report
Boeing DC April 2016 SEMIANNUAL GROUNDWATER MONITORING REPORT 6/21/2016 Remedial Action Report
2015 Annual Report, AOC-05 Remedial Action 6/1/2016 Remedial Action Report
Boeing DC SWMU-17 2015 Annual Report.pdf 4/14/2016 Remedial Action Report
Boeing DC October 2015 SEMIANNUAL GROUNDWATER MONITORING REPORT 2/12/2016 Remedial Action Report
Boeing DC April 2015 SEMIANNUAL GROUNDWATER MONITORING REPORT 12/17/2015 Remedial Action Report
2014 Annual Report, AOC-05 Remedial Action 10/23/2015 Remedial Action Report
Boeing DC November 2014 SEMIANNUAL GROUNDWATER MONITORING REPORT 6/5/2015 Remedial Action Report
2013 Annual Report, AOC-05 Remedial Action 11/24/2014 Remedial Action Report
Boeing DC May 2014 SEMIANNUAL GROUNDWATER MONITORING REPORT 10/7/2014 Remedial Action Report
Boeing DC May 2013 SEMIANNUAL GROUNDWATER MONITORING REPORT 8/22/2013 Remedial Action Report
2012 Annual Report, AOC-05 Remeidal Action 8/22/2013 Remedial Action Report
Boeing DC SWMU-17 2011-2012 Annual Report 5/7/2013 Remedial Action Report
Boeing DC November 2012 SEMIANNUAL GROUNDWATER MONITORING REPORT 4/8/2013 Remedial Action Report
Boeing DC May 2012 SEMIANNUAL GROUNDWATER MONITORING REPORT 8/17/2012 Remedial Action Report
Boeing DC November 2011 SEMIANNUAL GROUNDWATER MONITORING REPORT 3/1/2012 Remedial Action Report
Boeing DC Evaluation Report SWMU-17, SWMU-20, and AOC-05 3/10/2004 Remedial Action Report
Boeing Developmental Center - 2003 Annual Groundwater Monitoring Report, Gate J-28/Museum of Flight 7/24/2003 Groundwater Monitoring Report
Boeing Developmental Center - 2002 Annual Groundwater Monitoring Report, Gate J-28/Museum of Flight 5/24/2002 Groundwater Monitoring Report
Boeing DC Summary Report Corrective Action 2/27/2002 Remedial Action Report
Boeing Developmental Center - Groundwater Quality Investigation, Gate J-28 5/31/2001 Site Specific Technical Document - other
Boeing DC RCRA Facility Assessment Report 9/1/1994 Remedial Action Report
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.

Contaminants 7

Contaminant Type
Soil
Groundwater
Surface Water
Air
Sediment
Bedrock
Halogenated Organics - Halogenated Organics C C S S
Metals - Metals Priority Pollutants S C S S
Halogenated Organics - Polychlorinated biPhenyls (PCB) B
Non-Halogenated Organics - Petroleum Products-Unspecified S S
Non-Halogenated Organics - Non-Halogenated Solvents C C S S
Non-Halogenated Organics - Polycyclic Aromatic Hydrocarbons S C
Non-Halogenated Organics - Petroleum-Gasoline 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.