Jorgensen Forge Corp
8531 E Marginal Way S, Seattle, WA 98108

Jorgensen Forge
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Updated February 2020

As of July 2017, Ecology has negotiated a new legal agreement called an Agreed Order with Earle M. Jorgenson Company. The order requires Earle M. Jorgensen Company to complete the following:

  • Remedial Investigation (RI). The purpose of the RI is to define the nature and extent of contamination at the site and to determine if it is contributing to the sediment contamination in the Lower Duwamish Waterway. During the RI, the PLPs will collect data necessary to adequately characterize the contamination in soil, groundwater, stormwater, and sediments. 
  • Feasibility Study (FS). The FS will use the results of the RI to evaluate and choose measures to cleanup contamination and prevent recontamination of the sediment. 
  • Draft Cleanup Action Plan (DCAP). Ecology will identify a preferred cleanup action based on the results of the FS.

To view site reports and fact sheets, click on the "View Electronic Documents" link to the right.

Why this cleanup matters

This site is part of Ecology’s Lower Duwamish Waterway source control efforts, because it is contributing pollution the Lower Duwamish Waterway (LDW) Superfund Site. Source control means finding and stopping or reducing sources of pollution to the river.

The 5-mile stretch of the Duwamish River that flows north into Elliot Bay was added to the Superfund National Priorities List by the U.S. Environmental Protection Agency (EPA) in 2001.

Contaminants in the soil and groundwater around the river pose a risk to human health and the environment. They can also find their way into the river through storm runoff and other pathways. 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.

Ecology is leading efforts to control sources of contamination from the surrounding land area. The long-term goal is to minimize recontamination of the river sediment and restore water quality in the river. The Jorgensen Forge Site is one of several sites that will be cleaned up as part of Ecology’s Source Control Strategy. For more information, visit our Source Control page.

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Site Location

The Jorgensen Forge Site is approximately 21.6 acres, located in an industrial area along the east bank of the Lower Duwamish Waterway. The site is bordered to the north by the Boeing Plant 2 cleanup site, and to the south by the Boeing Isaacson property. It is bordered to the west by the Lower Duwamish Waterway, and to the east by East Marginal Way South and the King County Regional Airport.

Final site boundaries will be defined by the extent of contamination determined during the remedial investigation. 

The Lower Duwamish Waterway drainage basin is divided into source control areas. This site is located within the Boeing Plant 2/ Jorgensen Forge Early Action Area (river mile 2.8-3.7) source control area along the east bank of the river.

Site history

The property was used from 1942-1965 for fabrication of structural steel, tractor and road equipment. Operations at the site included forging and heat-treating by Isaacson Iron Works, which operated as a U.S. naval vessel manufacturer. 

The property was owned and operated by Earle M. Jorgensen Company from 1965 until 1992, when it was purchased by the plant management group and became the Jorgensen Forge Corporation.  Jorgensen manufactures specialized large-scale metal parts for the aircraft and marine industries, including open die steel forgings and rolled aluminum rings. They also process nickel, titanium, and specialized alloys. 


Contamination at the site is the result of heavy industrial use since the 1940’s, and contaminated groundwater migrating onto the property from off-site sources.

In the soil, contaminants of concern are:

•Polychlorinated biphenyls (PCBs)
•Petroleum hydrocarbonsVolatile organic compounds (VOCs)
•Halogenated volatile organic compounds (HVOCs)
•Metals (including arsenic, cadmium, chromium, and lead)

In the groundwater, contaminants of concern are:

•Petroleum hydrocarbons
•Volatile organic compounds (VOCs)
•Halogenated volatile organic compounds (HVOCs) - vinyl chlorideMetals

Previous cleanup work

Three underground gasoline storage tanks near the front gate were removed in 1991, and the soil was treated to remove contamination.

An Agreed Order signed in 2007 required Jorgensen Forge Corporation to investigate sources of contamination moving from the site into the Lower Duwamish Waterway. In 2013, Ecology and Jorgensen Forge amended the 2007 existing Agreed Order to require an interim cleanup action. Jorgensen removed contaminated soil from an access road area to prevent the spread of contamination during the U.S. Environmental Protection Agency's nearby cleanup activities. In 2014 Jorgenson Forge Corporation had satisfied all the requirements of this Agreed Order.

In 2015, Ecology issued an Enforcement Order requiring Jorgensen Forge Corporation to investigate and develop a cleanup action plan for the site. Jorgensen Forge declared bankruptcy in 2016.


The Model Toxics Control Act (MTCA; Chapter 70.105D RCW 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 the MTCA and oversees cleanups. The MTCA site cleanup process is completed in steps (see graphic below) over a variable timeline.

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Map showing site location as King County, WA SITE INFORMATION


View Electronic Documents

Cleanup Site Details Report

Facility Site ID: # 2382

Cleanup Site ID: 3689

Seattle, King County

Status: Cleanup Started   Get definitions of Status terminology

Maureen Sanchez
Site Manager
(425) 649-7254

Brad Petrovich
Project Planner and Public Involvement Coordinator
(425) 649-4486

Document Repositories:

Northwest Regional Office
3190 160th Ave SE
Bellevue, 98008-5452

South Park Branch / Seattle Public Library
8604 Eighth Avenue South
Seattle, 98108