Skip to Main Content View Text-Only

The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204

More Contact Info

Portland Harbor Superfund Site

Posted: January 21, 2020

The City’s Portland Harbor Program focused its efforts in 2019 on setting the stage for the next phase of the cleanup, remedy design.

Graphic of the remedy design process

This is the stage where engineers figure out how to implement EPA’s cleanup plan. Here are just a few of the ways the City worked with our partners to pave the way for this foundational step:

  • Collaborated with the State of Oregon to expedite sitewide cleanup by creating an innovative approach that resulted in nearly 20 parties committing to design more than half of the entire Superfund site.
  • Worked with River Mile 11 East Group to set the standards and design criteria to ensure the remedy will protect human health and the environment.
  • Partnered with the State of Oregon and the Port of Portland to start designing the in-water cleanup of Willamette Cove.
  • Launched our Portlander-informed Community Involvement Program.
  • Authorized $300,000 to support public involvement and community grants.
  • Laid foundation to increase accessibility and transparency of Portland Harbor information.

We are proud to share the City’s 2019 Portland Harbor Program milestones. We thank our public, private, and community partners for helping make 2019 such a successful year and we look forward to more collaboration and progress in 2020.


The Portland Harbor Superfund Site in Portland, Oregon is located in the lower Willamette River, just south of the Columbia Slough (river mile 1.9) and north of the Broadway Bridge (river mile 11.8). Portland Harbor has a long history of shipping, industrial, and commercial activity because of its key location on the Willamette River. This area of the river also has historical, natural and cultural resource significance.

Map of the Portland Harbor cleanup area

A joint U.S. Environmental Protection Agency (EPA) and Oregon Department of Environmental Quality (DEQ) study in 1997 showed that river sediments in Portland Harbor are contaminated with DDT and other pesticides, polychlorinated biphenyls (PCBs), and petroleum. Based on this information, EPA designated Portland Harbor as a Superfund Site in December 2000.

This is an unusually complicated Superfund site, one of the most complex in the EPA Superfund program. The site:

  • Has been subject to decades of historical contamination with a variety of pollutants
  • Involves numerous potentially responsible parties
  • Has endangered species act (ESA) considerations
  • Is culturally significant to six Native American tribes.

The EPA on January 6, 2017 issued its final cleanup plan. See the City's response.


Portland Harbor Superfund Community Grants Opportunity

We are accepting applications until Monday, Dec. 2 by 5:00 PM

Contact Info

How to learn more about the Portland Harbor Superfund site

City of Portland's Role

How the City of Portland is involved in the Portland Harbor Superfund investigation