Portland Harbor Superfund Site 101 by DEQ and EPA
EPA and DEQ officials presented a comprehensive overview of the Portland Harbor Superfund site cleanup process, covering the contamination history, current remedial design progress, and timeline for construction to begin in 2028 with 13 years of active cleanup work.
Summary
This educational presentation provided a detailed overview of the Portland Harbor Superfund site, which covers approximately 10 miles of the Willamette River from the Broadway Bridge to the middle of Sauvie Island. The contamination began over 100 years ago from industrial activities including shipbuilding, chemical manufacturing, and manufactured gas production. The site contains 64 contaminants of concern, with major ones being PCBs, PAHs, DDx, and dioxins. Approximately 150 potentially responsible parties (PRPs) have been identified, with cleanup costs being shared among federal, state, local government entities and private companies. EPA leads the in-water cleanup while DEQ oversees upland contamination and source control. The cleanup involves multiple technologies including dredging, capping with sand and protective layers, enhanced natural recovery, and in-situ treatment. The project is divided into 18 separate project areas, each managed by different groups of PRPs. Officials report they are currently about 75% through the remedial design phase, having collected over 10,000 samples and reviewed thousands of technical documents. Construction is scheduled to begin in 2028 and will take 13 years to complete, working only during fish windows (June through October). The cleanup faces significant logistical challenges including the need for new transloading facilities, coordination between multiple project areas, and community impact mitigation. A Community Advisory Group and River Advocacy Group provide ongoing community input and technical review through EPA grant funding.
Key Insights
- EPA officials stated that contamination at Portland Harbor began over 100 years ago from industrial activities like shipbuilding and chemical manufacturing
- Officials reported that approximately 150 potentially responsible parties have been identified for the cleanup costs
- EPA representatives explained that the main human health risk is eating contaminated resident fish that live their entire lives in the river
- Officials announced that construction will begin in 2028 and take 13 years to complete, working only during summer fish windows
- EPA staff revealed they have collected over 10,000 samples and are currently 75% through the remedial design phase
- Officials described the cleanup as involving multiple technologies including dredging, capping, enhanced natural recovery, and in-situ treatment
- DEQ representatives explained their role covers upland contamination and source control to prevent recontamination of cleaned areas
- Officials emphasized that the site is divided into 18 project areas, each managed by different groups of responsible parties
- EPA staff highlighted that work can only occur during fish windows from June through October each year
- Officials noted that significant logistical challenges include the need for new transloading facilities and coordination between project areas
- Representatives stated that six federally recognized tribes are consulted on every technical decision through bi-weekly meetings
- Officials explained that a separate Natural Resource Damage Assessment process runs parallel to the cleanup to address environmental damages
Topics
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