ALERT: All Ecology offices are closed to walk-in service through at least May 4. For more information please visit our COVID-19 response page. See also the Washington state COVID-19 page.
We've issued a Director's Determination, giving the U.S. Department of Energy 30 days to meet our information requirements.
The Sumas Mountain landslide is a slow slide that has clogged and flooded Swift Creek for decades. A few years ago it was found to contain naturally-occurring asbestos and metals.
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