Teck Trail Smelter, a canadian lead and zinc smelter located 10 miles from the US border in Trail B.C., has contaminated the Upper Columbia River and upland areas near the US border since 1896. Teck released heavy metal toxins including; arsenic, cadmium, lead, mercury and other hazardous metals through their smokestack emissions into the atmosphere and directly into the Columbia River in the form of slag, a sand like by-product of the smelting process.

1988 image of slag being released from Teck smelter into the Columbia River
(photo: Joel Rogers)

UCR Remedial Investigation Feasibility Study

In 2006, Teck American, Inc., entered into an agreement with the EPA to fund and conduct the Upper Columbia River Remedial Investigation and Feasibility Study (RI/FS) from the U.S.-Canadian border to Grand Coulee Dam and surrounding areas. The EPA is overseeing Teck’s RI/FS.

During the Remedial Investigation (RI) phase; Teck conducted soil and sediment sampling and analysis studies, multiple fish studies, water sampling and an assessment of past air monitoring data of the area. The purpose of the investigation was to collect environmental samples and analyze the data to identify heavy metal contaminants, contaminated locations, and assess the risk of exposure to human health and the environment.

The Feasibility Study (FS) phase will be developed after the RI phase has been completed. It will offer cleanup options for contaminated areas discovered during the RI.

Sturgeon study along the upper Columbia River

Human Health Risk Assessment

The EPA is responsible for the Human Health Risk Assessment (HHRA). The data collected during the RI on the contaminants of concern will be used by the EPA to assess if the levels and routes of exposure to the identified contaminants pose a potential risk to public health.


Additional Information & Resources

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