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Stone v. High Mountain Mining Co., LLC
The Tenth Circuit reversed a district court finding of a CWA violation in a citizen suit brought against the operator of a gold mine in Colorado. Plaintiffs argued the operator violated the CWA because seepage from the mine's settling ponds flowed into the groundwater and then migrated to the Middle...
Annual Supreme Court Review and Preview
The U.S. Supreme Court's October Term 2022 had major implications for environmental law, including its most significant Clean Water Act decision ever. Upcoming cases in October Term 2023 have the potential to be just as impactful. On September 25, 2023, the Environmental Law Institute hosted a panel of experts who provided an overview of key rulings and major take-aways from the Court’s prior term, and discussed cases that have been granted review or are likely to be considered by the justices in the upcoming term.
Idaho Conservation League v. Poe
The Ninth Circuit affirmed summary judgment for an environmental group in a suit against a California resident who engaged in instream suction dredge mining in Idaho’s South Fork Clearwater River without an NPDES permit. The group argued the resident violated the CWA each time he operated a suctio...
Unpacking the Revised WOTUS Rule
On August 29, 2023, the U.S. Environmental Protection Agency and the U.S. Army Corps of Engineers issued a direct final rule that revised the “waters of the United States” (WOTUS) definition rule. This rule amended the final WOTUS rule, previously published in January 2023, to be consistent with the Supreme Court’s May decision in Sackett v. Environmental Protection Agency. On September 14, the Environmental Law Institute hosted a panel of experts to analyze the new rule and discuss its regulatory and policy consequences.