Boeing Fabrication Auburn Plant

Welcome to the Boeing Auburn Fabrication Site!      en español

The Washington State Department of Ecology (Ecology) oversees the cleanup process that the Boeing Company (Boeing) is conducting. The first phase of Ecology’s four-part cleanup process is called the Remedial Investigation (RI). The RI, which began in 2002, has evaluated the location, size and impacts of underground contamination that extends more than a mile north and northwest of Boeing’s property.

Draft Remedial Investigation (RI) Report

The Draft RI Report uses the findings from the entire investigation to define the nature, extent, and magnitude of the contamination in order to identify the best methods for cleanup. For more information about the Draft RI Report you can:

What's New - July 2017

Response to Comments Coming Soon

Ecology held a comment period from March 8 - May 8, 2017 for the Remedial Investigation (RI) about groundwater contamination from the Boeing Auburn facility. We are now in the process of reviewing the comments and compiling a response to comments, called a Responsiveness Summary. When it is complete, we will send it to those who submitted comments and post it to this website.

Next Steps: Feasibility Study will Propose Cleanup Alternatives

Ecology and Boeing will have more information on how the site will be cleaned up in the Feasibility Study (FS). You will have a chance to tell us what you think about the cleanup alternatives during a public comment period. Below are Ecology’s requirements to be included in the FS.

Groundwater: The FS will include alternatives for cleaning up the remaining groundwater contamination that has moved away from the source of the Area 1 and western plumes.

Air Quality: Since 2003, industrial, commercial and residential air quality has been evaluated as part of the Remedial Investigation. Based on those findings, exposure to volatile organic compounds (VOCs) is not a health concern at the site. Ecology is not requiring further indoor air evaluation, and air quality will not be investigated further in the Feasibility Study (FS).

Soil: Cleanup of the two Solid Waste Management Units (SWMUs) and two Areas of Concern (AOCs) on the Boeing facility will be included in the FS to address soil and related groundwater contamination.

  • Areas of Concern (AOCs) Places with actual or potential contamination that require investigation of remediation.
  • Solid Waste Management Units (SWMUs) Any piece of equipment at the Facility from which contaminants might have migrated.

Surface Water: Ecology is recommending that Boeing continue to monitor surface water and will determine cleanup actions during and after the FS to ensure surface water will be protected in the future. Although TCE and VC were detected in some storm water collection ponds and channels in Algona and southwest Auburn, their extent is limited. Concentrations do not indicate that negative health impacts would result from occasionally touching or swallowing the water or breathing the air.

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Northwest Regional Office
3190 160th Avenue SE
Bellevue WA 98008-5452
Phone: 425-649-7232