Jorgensen Forge Corp

Last updated: 6/11/2026

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We, along with the Potentially Liable Party (PLP) for the Jorgensen Forge Corp Site (Site): Earle M. Jorgensen Company, prepared the following documents for public comment from March 9 - April 22, 2026: 

Remedial Investigation (RI): Describes contaminants at the Site and where they are located. Because the report is large, it is divided into 5 parts.

Part 1: 

• Text, Tables, Figures, Appendix A (Site History and Use), Appendix B (Previous Investigations and Remedial Actions) This section includes a summary of the document on page 3 of the PDF. This summary is a good place to begin when reviewing a large RI like this one.
• Appendix B (continued), Appendix C (Field Methods), and Appendix D (Cultural Resources Report)
• Appendix E - Part 1 (Data Quality Summary Reports) 

Part 2: 

• Appendix E - Continued (Data Quality Summary Reports): (pg. 1 - 981) (pg. 982 - 2100) (2101 - 2579) 

Part 3:

• Appendix E - Continued (Data Quality Summary Reports): (pg. 1-1048), (pg. 1049-1488), (pg. 1489 - 2255)

Part 4: 

• Appendix E - Continued (Data Quality Summary Reports): (pg. 1-1000), (pg. 1001-1950), (pg. 1951 - 2545

Part 5:

• Appendix E - Continued (Data Quality Summary Reports), Appendix F (LNAPL Investigation Findings), Appendix G (Terrestrial Ecological Evaluation Documentation)
• Appendix H ( PFAS Investigation Report Evaluation Documentation), Appendix I (Star Forge Reports), Important Information

Feasibility Study (FS): A document showing different cleanup methods, called alternatives. This document includes Ecology’s preferred alternative.

View comments

Ecology presented a summary of the work at these cleanup sites in Georgetown and South Park. View the presentation from these events.

• Tuesday, March 10 (6:00 p.m.)
  South Park Neighborhood Association meeting
  Duwamish River Community Hub 
  8600 14th Ave S., Seattle
• Monday, March 16 (7:00 p.m.)
  Georgetown Community Council meeting
  Georgetown Old City Hall 
  6202 13th Ave S., Seattle

Ecology had another cleanup site along the LDW open for public comment. Visit the South Park Marina webpage to learn more about that separate cleanup site.

The Site was first developed by Isaacson Iron Works for the U.S. Navy in 1942 during World War II (WWII) to produce propeller shafts and other naval equipment. Steel and aluminum fabrication continued on the Site after WWII. In 1965, Earle M. Jorgensen purchased the property along with a separate area along the northwestern portion of the Site, and in 1992, ownership of the Site transferred to the Jorgensen Forge Corporation. From 1965 until 2018, operations at the Site remained relatively unchanged. The final operator, Star Forge, intends to sell the property and is pursuing Clean Closure under the State Dangerous Waste requirements. On April 19, 2023, Star Forge entered into a legal agreement, called an Agreed Order, with Ecology to conduct a partial cleanup, called an Interim Action, at the Site. The partial cleanup consisted of closing underground storage tanks, cleaning up asphalt and concrete, and demolishing buildings and structures. A summary report of the Interim Action will be available on this webpage once finalized.

Timeline of Previous Cleanup Work

• 1991: Three underground gasoline storage tanks near the front gate were removed and the soil was treated to remove contamination.
• 2007: A legal agreement, called an Agreed Order, signed in 2007 required Jorgensen Forge Corporation to investigate sources of contamination moving from the site into the Lower Duwamish Waterway.
• 2013 - 2014: 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.
• 2015 - 2016: 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.
• 2023 - 2024: A new Agreed Order was signed that required Jorgensen to conduct an Interim Action. The partial cleanup consisted of closing underground storage tanks, cleaning up asphalt and concrete, and demolishing buildings and structures.
• 2026: RI and FS available for public comment.

Contaminated soil and groundwater were identified at eleven areas of concern (AOC) across the Site. The Site is contaminated primarily due to historical leaks and spills from industrial activities that affected the soil and groundwater. Once these substances were in the soil and groundwater, they moved into the soil vapor, stormwater, and sediment. The RI looked at all of these media and determined the following next steps: 

• Soil and Groundwater: The Feasibility Study outlines how each of the 11 AOCs will be cleaned up through a mixture of excavation, capping, and soil stabilization. 
• Soil Vapor: Since the buildings at the Site were demolished, soil vapor is not a concern. 
• Stormwater: An existing collection and treatment system manages the stormwater.
• Sediment: Most of the contaminated riverbanks and sediments were removed and disposed of off-site in 2014 under the direction of the Environmental Protection Agency (EPA), but some contamination remains. EPA is overseeing the additional cleanup work in this area to ensure both human health and the environment are protected. For more information, please visit EPA’s Lower Duwamish Waterway Superfund website.

Contamination
Investigations found the following contaminants in soil and groundwater warranting cleanup:

• Total petroleum hydrocarbons (TPH)
• Polychlorinated biphenyls (PCBs)
• Perfluorooctanesulfonic acid (PFOS).

Four potential cleanup alternatives were evaluated for this Site. A disproportionate cost analysis was performed to determine the most effective and cost-efficient alternative for the Site using six criteria: protectiveness, permanence, long-term effectiveness, management of cleanup risks, ease of implementation, and cost. The results of this FS indicate the preferred alternative is Alternative 3, which consists of the following cleanup action elements: 

• Areas 1 and 2: Targeted excavation to remove Light Non-Aqueous Phase Liquid (LNAPL). LNAPL is a fuel or oil that will float on underground water sources. These areas will also undergo a solidification and stabilization process that will turn the area into cement to keep remaining contamination from spreading.
• All other areas will be covered with an asphalt cap or similar and groundwater will be monitored to make sure contamination levels are reduced on their own over time. If they do not reduce, there are other actions that will be triggered to help this process.
• The entire Site will have an environmental covenant in place to ensure that the cleanup elements are not disturbed by future use of the Site. 

The proposed cleanup action will be detailed in a Draft Cleanup Action Plan (dCAP) and may be adjusted based on public comments from this comment period.

The South Park Marina Site is near the Lower Duwamish Waterway Superfund Site, which includes a 5-mile stretch of the Duwamish River. The U.S. Environmental Protection Agency (EPA) added the LDW Superfund Site to the Superfund National Priorities List in 2001. Ecology is working to stop or reduce sources of contamination to the LDW Superfund Site, an effort known as “source control,” so that the EPA can proceed with the cleanup of the river sediment. The sediment cleanup sites are grouped together by reach (stretch of river), and the upper reach (the upstream end of the LDW) was the first to begin sediment cleanup which started in 2024.

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.