EPA ID# WAD009249210
EPA Region 10
King County

8th Congressional District

Other Names: PACCAR
Last Update: April, 2010

Hide details for Site DescriptionSite Description

From 1907 to 1988, Pacific Car & Foundry Co. (PACCAR) manufactured trucks, military equipment, and railroad cars on a 82-acre facility. Until 1964, the facility put waste materials, including foundry sand, wood, metal, paints, solvents, and oils in a marshy area. Wastes were buried up to 7 feet below the surface in peat and clay.

Site Responsibility: This site is being addressed through state and potentially responsible parties' actions.

NPL Listing HistoryDates
Proposed Date:06/24/1988
Removed Date:
Withdrawal Date:
Final Date:02/21/1990
Deleted Date:

Hide details for Threats and ContaminantsThreats and Contaminants

Media Affected: Groundwater, Soil & Sludges
The soil on the site is contaminated with heavy metals, polycyclic aromatic hydrocarbons (PAHs), and polychlorinated biphenyls (PCBs). Groundwater is contaminated with heavy metals, petroleum products and solvents. Approximately 37,000 people use groundwater from municipal wells located within 3 miles of the site. People could be exposed by ingesting (coming in direct contact) groundwater and soil.

Hide details for Cleanup ProgressCleanup Progress

In 1991, the State selected to treat the most contaminated soil "hot spots", covering some areas, and putting in place institutional controls (locally enforced rules) to address small quantities of contaminants. The remedy was completed in 1996 under a Consent Decree between the State and PACCAR. Remedial activities included bioremediating petroleum contaminated soil, stabilizing metals in soil, and excavating and removing soils contaminated with PCBs and PAHs. All actions are completed. No further activities are anticipated. Long-term groundwater monitoring is ongoing.

Show details for Regional ContactsRegional Contacts