The U.S. Supreme Court this month found that the interpretations of the Environmental Protection Agency and the Army Corps of Engineers about permitting provisions in the Clean Water Act were reasonable. The ruling affirmed a federal Clean Water Act Section 404 permit issued by the Corps for an Alaska gold mine project and clarified that a Section 404 permit is administered by the Corps and applies to discharge of dredge and fill material pollutants. The 404 permit is mutually exclusive with a Section 402 NPDES permit, which is administered by the EPA for all other pollutant discharges.

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