Portland Harbor Superfund Site: River Mile 3.5 East

Client: Schnitzer Steel Industries, Inc.
Characterization of sediment, stormwater, and riverbank contamination and source control remedial design for a portion of the Portland Harbor Superfund Site.

Overview of Floyd|Snider Contributions

Lead consultant—Supervising Contractor for River Mile 3.5 East parties
Sediment Sufficiency Assessment Report preparation
Pre-design investigation to support remedial design
Remedial design for source control, Superfund sediment and riverbank cleanup

Project Summary

The Portland Harbor Superfund Site includes contaminated sediments along 10 miles of the Willamette River.

The USEPA has issued a Record of Decision for the Superfund Site, requiring control of sources of contamination to sediments; implementation of dredging, capping, and natural recovery remedies for sediments; and remediation of contaminated riverbank areas. The Superfund Site has been divided into multiple primary areas designated by river mile. Responsible party groups for each area are required to design and implement remedial actions, with oversight from USEPA in coordination with the Oregon Department of Environmental Quality, local tribal governments, and key stakeholders. The 60-acre River Mile 3.5 East Project Area (Project Area) of the site includes industrial waterfront properties owned by Schnitzer Steel Industries, Inc. (Schnitzer Steel), MMGL LLC, Time Oil, and the Port of Portland.

The Portland Harbor Superfund Site includes contaminated sediments along 10 miles of the Willamette River. The USEPA has issued a Record of Decision for the Superfund Site, requiring control of sources of contamination to sediments; implementation of dredging, capping, and natural recovery remedies for sediments; and remediation of contaminated riverbank areas. The Superfund Site has been divided into multiple primary areas designated by river mile. Responsible party groups for each area are required to design and implement remedial actions, with oversight from USEPA in coordination with the Oregon Department of Environmental Quality, local tribal governments, and key stakeholders. The 60-acre River Mile 3.5 East Project Area (Project Area) of the site includes industrial waterfront properties owned by Schnitzer Steel Industries, Inc. (Schnitzer Steel), MMGL LLC, Time Oil, and the Port of Portland.

Our Approach

On behalf of Schnitzer Steel and the other Project Area parties, Floyd|Snider is leading the remedial design process for the Project Area.

This includes development of a Sufficiency Assessment Report and Pre-Design Investigation Work Plan and implementation of significant additional sediment, stormwater, groundwater, and riverbank soil characterization to support remedial design. In addition, the work includes all phases of remedial design for implementation of source control and sediment cleanup. A key focus of the work is to implement remedial actions that are well integrated with future uses of the properties and to provide robust environmental protection given continued industrial use.

Project Milestones:

2020. Sufficiency Assessment Report and Pre-Design Investigation Work Plan
2021. Pre-design investigation and remedial design

On behalf of Schnitzer Steel and the other Project Area parties, Floyd|Snider is leading the remedial design process for the Project Area. This includes development of a Sufficiency Assessment Report and Pre-Design Investigation Work Plan and implementation of significant additional sediment, stormwater, groundwater, and riverbank soil characterization to support remedial design. In addition, the work includes all phases of remedial design for implementation of source control and sediment cleanup. A key focus of the work is to implement remedial actions that are well integrated with future uses of the properties and to provide robust environmental protection given continued industrial use.

Project Milestones:

2020. Sufficiency Assessment Report and Pre-Design Investigation Work Plan
2021. Pre-design investigation and remedial design

Project Team

Floyd|Snider
Dalton, Olmsted & Fuglevand, Inc.
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