In early 2016, site specific cleanup plans for Development Sites 8 and 9 were finalized. Ecology held a public comment period before finalizing the plans, and no comments were received. The cleanup plans and associated documents are available for review below.

Thea Foss waterfront, Museum of Glass cone
Please click on the photo for a larger view


The Superfund Site - Thea Foss Waterway

A century of immense industrial growth along the Thea Foss Waterway polluted its waters and shoreline. In the 1980s, the US Environmental Protection Agency (EPA) listed the Thea Foss under the federal Superfund program.

The EPA oversees the cleanup of the waterway’s sediments. They are polluted with heavy metals and poly-chlorinated biphenyls (PCBs).

Land: Ecology oversees cleanup of contaminated lands along the waterway. Pollution on land varies based on the historical use of each area. Contaminants include:

·         petroleum hydrocarbons

·         solvents

·         metals

This webpage provides details about the cleanup of the site’s land.


The City of Tacoma (the city) and the Thea Foss Development Authority (development authority) are redeveloping about 30 acres of polluted land. They divided the 30-acre area into smaller sites for redevelopment (see map on left). This is providing space for commercial and residential land uses, parks, and public access to the water.

Clean up began in 1994 when Ecology, the city and Metro Parks Tacoma entered into a legal agreement (consent decree). In 2000, the development authority replaced the park district on the consent decree.

Original Consent Decree


Each time Ecology identifies a new Potentially Liable Person (PLP), we add them to the consent decree. This includes parties that buy properties in the cleanup area. The public can comment on these consent decree amendments.  

Ecology drafts a Site-Specific Cleanup Action Plan (SCAP) for each parcel before it is cleaned up. The SCAP describes the extent and nature of site contamination and provides a set of cleanup methods. The public can also comment on the draft SCAP.

To read past consent decree amendments and SCAPs, click “View Electronic Documents” in the bar on the right.


April 18, 2014 Thirteenth Amendment to the Consent Decree. Adds Henry Foss Group LLC to the consent decree for Site 1.
January 30, 2014 Fourteenth Amendment to the Consent Decree. Adds CR Albers Mill Communities, LLC to the consent decree, for Site 2.
December 4, 2012     Twelfth Amendment to the Consent Decree. Adds Tacoma Waterway LLC (Hollander Investments)
July 20, 2007     Eleventh Amendment to the Consent Decree. 
Adds Foss Waterway, LLC to the Consent Decree. 
The amended Consent Decree was never filed. 
The proposed redevelopment plan was withdrawn. 
April 4, 2007            Tenth Amendment to the Consent Decree.
August 24, 2006 Ninth Amendment to the Consent Decree
Adds Thea Foss Holding LLC (for developing Site 5)
June 10, 2005 Supplemental Filing
November 13, 2002 Eighth Amendment to the Consent Decree
Adds Albers Mill LLC (for developing Site 2)
April 30, 2002 Seventh Amendment to the Consent Decree
  Adds Team Tacoma III, LLC (for developing Site 3)
August 16, 2002 Sixth Amendment to the Consent Decree
Adds Parcel 4 SCAP
August 16, 2002 Fifth Amendment to the Consent Decree
Adds Parcel 10 & 21st ROW SCAP
April 30, 2002 First Comprehensive Amendment
November 17, 2000 Fourth Amendment to the Consent Decree
Adds Parcel 3 & 15th Street ROW SCAP
November 17, 2000 Third Amendment to the Consent Decree
Adds Parcel 9 SCAP
November 17, 2000 Second Amendment to the Consent Decree
Adds Foss Waterway Development Authority Board
April 25, 1995 First Amendment to the Consent Decree
Adds Parcel 7 & 18th Street ROW SCAP
October 7, 1994 Original Consent Decree



Map showing site location as Pierce County, WA SITE INFORMATION


View Electronic Documents

Cleanup Site Details Report

Facility Site ID: # 1263

Cleanup Site ID: 3677

Tacoma, Pierce County

Status: Construction Complete-Performance Monitoring   Get definitions of Status terminology

Marv Coleman
Site Manager

Megan Macclellan
Public Involvement Coordinator
(360) 407-0067

Document Repositories:

Southwest Regional Office
300 Desmond Dr SE
Lacey, 98503-1274

Tacoma Public Library
1102 Tacoma Avenue S
Tacoma, 98402

Citizens for a Healthy Bay
535 Dock St., Suite 213
Tacoma, 98402