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May 22, 2024

Hydrologists Erin Murray and Lauren Zinsser presented findings from USGS science at the Basin Environmental Improvement Project Commission meeting, May 15, 2024, in Kellogg, Idaho. The Commission celebrated 50 years of successes in cleaning up the Bunker Hill Superfund Site in the Silver Valley. USGS science has helped to guide cleanup efforts. 

More than 100 years of mining activity in northern Idaho's Coeur d'Alene River/Spokane River basin left widespread metals contamination in soils and water. In 1983, the U.S. Environmental Protection Agency added the Bunker Hill Mining and Metallurgical Complex (Bunker Hill) to the National Priorities List. The Bunker Hill Superfund Site is one of the nation's largest environmental remediation projects. 

Since 1990, scientists from the USGS Idaho Water Science Center, working in cooperation with the EPA, have monitored and studied water quality in the basin, providing scientific information to guide cleanup efforts.

As part of an event commemorating 50 years of cleanup successes, USGS hydrologists Erin Murray and Lauren Zinsser were invited to present findings from USGS research. You can use the links below to view their presentation slides. 

Erin Murray

Erin Murray

Reductions in groundwater loading of trace metals and phosphorus to the South Fork Coeur d'Alene River following remediation to the Bunker Hill Superfund Site (PDF)

Lauren Zinsser

U.S. Geological Survey hydrologist Lauren Zinsser

Trends in Trace Metal Concentrations, Loads, and Sources in the Coeur d’Alene River Watershed, 1990-2018 (PDF)

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