A district court granted EPA's motion to remand and vacate the Agency's 2019 decision to withdraw a proposed determination that would have restricted a copper and gold mine from using certain waters at disposal sites for dredged and fill material. The court found that neither retention of jurisdicti...

The D.C. Circuit ordered FERC to consider whether to stay a certificate for a pipeline that would carry natural gas from western Canada to a proposed export terminal in Oregon in light of the developer's decision to postpone development.
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A district court held that BLM's 2018 decision to auction oil and gas leases on federally owned land in Colorado violated NEPA. Environmental groups argued the decision had failed to consider more accurate air monitoring data and modeling that became available after the 2017 EA on which it relied wa...

A district court upheld in part and vacated in part a 2016 rule of the Office of Natural Resources Revenue (ONNR), which effectively changed how royalties owed to the federal government are calculated on oil, gas, and coal produced from federal land and offshore leases as well as coal produced from ...

A district court denied summary judgment for the state of Missouri in a challenge to the Bureau of Reclamation's approval of a water supply project in North Dakota. Missouri argued the Bureau violated NEPA by failing to prepare an EIS, failing to take a "hard look" at the effectiveness of mitigation...

The Ninth Circuit granted in part and denied in part a petition to review EPA's final rule approving California's SIP for meeting the air quality standard for ozone in the San Joaquin Valley. An environmental group argued the SIP's contingency measure was inadequate because it provided only a nomina...

The D.C. Circuit denied a challenge to EPA's 2015 rule updating the standards under which the Agency audits wood-burning heaters' compliance with CAA emissions limits. An industry group argued the rule was invalid because, unlike the 1988 rule, it authorized testing at other labs and neither account...

A district court granted in part and denied in part summary judgment for an environmental group and U.S. congressman in a lawsuit concerning enforcement activity along the U.S.-Mexico border. The plaintiffs argued the Department of Homeland Security (DHS) violated NEPA by failing to issue a suppleme...

A district court vacated BLM's approval of an oil and gas project in the National Petroleum Reserve in Alaska. Indigenous and environmental groups argued BLM violated NEPA by failing to adequately analyze the effects of the project's downstream greenhouse gas (GHG) emissions in its EIS, failing to c...

The Eighth Circuit affirmed in part and reversed in part a district court ruling in an ongoing enforcement suit concerning air pollution at a utility company's coal-fired power plant in Missouri. EPA argued the company violated the CAA, Missouri's SIP, and its Title V permit by performing modificati...