Under the terms of a 2006 settlement agreement between the Environmental Protection Agency (EPA) and Teck American Incorporated (Teck), a pollution investigation is being performed to establish the nature, extent and possible human health and ecological risks of contaminants found in the Upper Columbia River, which includes Lake Roosevelt and the Upper Columbia River Valley. The EPA refers to the investigation as the Upper Columbia River (UCR) Site Remedial Investigation and Feasibility Study (RI/FS). For the history and detailed information of the study click here. Or to read Lake Roosevelt Forum’s RI/FS Public Guide click here.
There is a brief update on the status as of January 2018 of the studies that form the RI/FS. Final reports from completed studies can be found on the website click here to read. Once all studies are completed, EPA will perform both a human health risk assessment and baseline ecological risk assessment. Those results will direct the need for remediation.