For more information about National Park Service air resources, please visit http://www.nature.nps.gov/air/.


Contaminant Sampling in the Pacific Northwest

Airborne contaminants such as mercury, pesticides, and other toxics are measured in sediment, water, fish, and other ecosystem components. This information is important for land managers and scientists to assess ecosystem health. It also provides insight about study gaps and can help identify areas for future research.

Because studies have found elevated levels of contaminants in the Pacific Northwest (PNW)—including Oregon and Washington—the PNW Contaminants Workgroup formed to coordinate and facilitate science, education, and outreach related to contaminants issues in the region's protected areas. One objective of the Workgroup is to provide a clearinghouse for regional contaminants data.

Click on the map below to access contaminant sampling locations (as of November 2013), and links to associated fact sheets, reports, or databases. Links also include agency contacts for more information.


The following participating agencies from the PNW Contaminants Workgroup contributed data to this map: U.S. Forest Service, U.S. Environmental Protection Agency, Washington Department of Ecology, U.S. Geological Survey, and the National Park Service.


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Last Updated: October 20, 2014