An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Columbia River

Upper Columbia River Remedial Investigation & Feasibility Study


EPA is studying contamination in the Columbia River from the U.S./Canada border to the Grand Coulee Dam and surrounding upland areas. The study is called a Remedial InvestigationHelpRemedial InvestigationAn in-depth study designed to gather data needed to determine the nature and extent of contamination at a Superfund site; establish site cleanup criteria; identify preliminary alternatives for remedial action; and support technical and cost analyses of alternatives. The remedial investigation is usually done with the feasibility study. Together they are usually referred to as the "RI/FS" and Feasibility Study (RI/FS).

Past studies by federal and state agencies have shown increased levels of heavy metals such as arsenic, lead, cadmium, copper, mercury and zinc, and other contaminants like dioxins and furans.

In August 1999, the Colville Confederated Tribes petitioned EPA to conduct an assessment of environmental contamination in the Upper Columbia River. The petition expressed concerns about risks to people’s health and the environment from contamination in the river.

In 2001, EPA collected samples of river sediment to learn more about the types and amounts of pollution that exists. The results showed that contamination is present in the lake and river sediments, and that a more detailed investigation is needed to evaluate possible risks to human health and the environment.

In 2006, Teck American, Inc. signed an agreement with EPA to pay for the RI/FS.


Electronic copies

Many documents are also available on Teck American's Upper Columbia River Project website.Exit

Hard copies

For your convenience, information about this project is also available at seven locations throughout the project area. Each location has the same information, including full copies of draft and final technical documents, fact sheets, and other information about the site. Before you visit a location, please call ahead for business hours. 

  • Northport: Northport Town Hall, 315 Summit St., 509-732-4450
  • Colville: Colville Public Library, 195 S. Oak Street, 509-684-6620
  • Inchelium: Inchelium Tribal Resource Center, 12 Community Loop, 509-634-2791 
  • Nespelem: Office of Environmental Trust, Bldg. #2, Colville Confederated Tribes, 1 Colville, 509-634-2413
  • Grand Coulee: Grand Coulee Library, 225 Federal Street, 509-633-0972
  • Wellpinit: Spokane Tribe Department of Natural Resources, 6290 D Ford-Wellpinit Road, 509-626-4425
  • Spokane: Spokane Library, 906 W. Main, 509-444-5336

Community Technical Assistance

Our Technical Assistance Grant (TAG) program helps communities participate in cleanup decision-making. It provides funding to community groups to contract their own technical advisor to interpret and explain technical reports, site condi­tions, and EPA’s proposed cleanup proposals and decisions. An initial grant up to $50,000 is available to qualified community groups.

EPA has awarded Citizens for a Clean Columbia with a technical assistance grant funded by Teck American to participate in the RI/FS process. For more information, contact or visit their website.