Reviving the ‘Just One Molecule’ Rule? Clean Water Act Permit Revoked Upon Newly Adopted Tribal Water Quality Standards

In March 2019, the U.S. Army Corps (“Corps”) issued a Clean Water Act, Section 404 (“CWA”) permit to PolyMet Mining Inc. (“PolyMet”) for an open-pit copper-nickel mine in Minnesota. CWA, Section 404, requires Corps authorization before any work involving placement of fill or discharge of dredged materials begins in any waters of the United States […]

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