Page 2 - Lake Roosevelt Forum 2020 Public Guide

Background
In 2005, the Environmental Protection Agency (EPA) initiated the Upper Columbia River/Lake Roosevelt Remedial Investigation & Feasibility Study (UCR RI/FS). Since 2006, the RI/FS has been conducted and funded under a settlement agreement between EPA,
Teck Metals Ltd. (a Canadian company), and its U.S. affiliate Teck American Inc. (TAI). Inclusive of Lake Roosevelt, the UCR site extends approximately 150 river miles from the Canadian border to the Grand Coulee Dam and includes areas of the Upper Columbia Valley.
The purpose of the UCR Lake Roosevelt RI/FS is to establish the nature, extent and possible human health and ecological risks of metals and other contaminants found in the Upper Columbia River. EPA identified a primary source of contaminants in sediments as historic discharges from Teck’s Trail Smelter that is located about ten river miles north of the U.S./Canada border. From 1923 until operational changes in 1995, the Trail Smelter discharged millions of tons of granulated fumed slag with trace metals into the Columbia River in British Columbia. EPA also links smelter air emissions to deposition of lead in soils in the Upper Columbia Valley.
This Human Health Risk Assessment (HHRA) public guide focuses on:
• key HHRA findings and how possible exposure risks were calculated,
• precautionary measures to protect visitor and resident health where exposure to contaminants may be of concern, and
• cleanup and other actions that are completed, in process or may be considered.
Go to www.lrf.org/draftHHRA to access the EPA’s draft UCR HHRA and other resources.
Upper Columbia River Site Human Health Risk Assessment Data Collection and Studies
Public Beach Sediment Sampling
Fish Sampling
Surface Water Sampling
Mussels & Crayfish Sampling
Plant Sampling
Tribal Consumption & Resource Use Survey
Recreational Use Survey
Upland Soil Sampling
Residential Soil Sampling
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