On January 14, 2026, the U.S. Court of Appeals for the Fifth Circuit denied a petition for review challenging the Texas Commission on Environmental Quality’s (“TCEQ”) approval of a third extension of the construction deadline for the Texas LNG Port of Brownsville liquefied natural gas (“LNG”) terminal. The Court held that although environmental justice advocates had standing to challenge the extension, TCEQ’s executive director acted within her delegated authority and the agency’s decision was supported by substantial evidence under Texas administrative law. The ruling, South Texas Environmental Justice Network v. Texas Commission on Environmental Quality et al., Case No. 24-60580, clarifies the procedural and substantive standards governing construction-deadline extensions for New Source Review (“NSR”) permits under Texas law and reinforces agency discretion when permittees satisfy the express requirements of the applicable regulation. Read More »

Share | Email| Comments|  Topics: Agency Action, Citizen Suit, Energy, Fifth Circuit, Natural Gas, Oil and Gas, Permits, Standing, Texas

In a recent decision by the United States Court of Appeals for the Sixth Circuit, Sierra Club v. EPA, Nos. 23-3581/3583 (6th Cir. Dec. 5, 2025), the Court invoked its statutory interpretation authority to hold that EPA contravened the plain language of the Clean Air Act (“CAA”) by redesignating the Detroit area as in attainment with the 2015 ozone National Ambient Air Quality Standards (“NAAQS”). Conversely, the Court deferred to EPA’s technical expertise in determining that certain air emissions should be excluded from consideration of the Detroit area’s compliance with the ozone NAAQS because of their qualification as “exceptional events” under the CAA, demonstrating that Courts will continue to defer to agencies’ expertise, but will not defer to agency interpretations of their enabling statutes. Read More »

Share | Email| Comments|  Topics: Agency Action, Air, Chevron Deference, Clean Air Act, Emissions, EPA, Hazardous Air Pollutants, Loper Bright, Michigan, Sixth Circuit

On June 6, 2025, the D.C. Circuit ruled in Appalachian Voices et al. v. FERC that the Federal Energy Regulatory Commission’s (FERC) approval of an extension of the construction deadline for Mountain Valley Pipeline, LLC’s (MVP) MVP Southgate Project (the “Southgate Project”) was permissible, denying environmental groups’ petitions for review. This case potentially forecasts future judicial treatment of agency action in the aftermath of the Loper Bright v. Raimondo decision, and signals how courts may treat future challenges aimed at delaying development in light of recent curtailment of the National Environmental Policy Act (NEPA). Read More »

Share | Email| Comments|  Topics: Administrative Appeals, Agency Action, Chevron Deference, D.C. Circuit, FERC, Loper Bright, NEPA, Oil and Gas

On June 18, 2025, the Supreme Court decided EPA v Calumet Shreveport Refining, LLC et al., and its companion case Oklahoma et al. v. EPA, clarifying the tripartite framework for determining venue in Clean Air Act (“CAA” or “Act”) litigation.  Looking at the CAA's venue provision (42 U.S.C. 7607(b)(1)), the Court explained that if a challenge is to an “nationally applicable” EPA action the challenge should be directed to the U.S. Circuit Court of Appeals for the D.C. Circuit and the matter ends there.  But, if the challenge is to a “locally or regionally applicable” EPA action, then typically those challenges belong in the relevant regional Circuit Court.  However, when a “locally or regionally applicable” action falls within the “nationwide scope or effect” exception, which requires the action be (1) “based on a determination of nationwide scope or effect” and (2) accompanied by an EPA finding to the same effect, the Court instructed that the matter should be routed back to the D.C. Circuit.  Applying this understanding of CAA's venue provision, the Court reached different conclusions in Calumet and Oklahoma, finding respectively that the “nationwide scope or effect” exception applied in one instance and not in the other. Read More »

Share | Email| Comments|  Topics: Agency Action, Air, Clean Air Act, D.C. Circuit, EPA, Federal Procedure, Procedure, Refinery, Renewable Fuel Standard, State Implementation Plans, Supreme Court, United States Supreme Court, Venue

On June 20, 2025, the Supreme Court issued it opinion in Diamond Alternative Energy v. EPA, holding fuel producers had standing—and had specifically demonstrated redressability—to challenge California-specific regulations EPA approved under the Clean Air Act.  The Court’s opinion  reversing and remanding to the D.C. Circuit left the merits of the case for another day, but acknowledged that the regulations at issue may be rescinded shortly, mooting most, if not all, of the parties’ controversy. Read More »

Share | Email| Comments|  Topics: Agency Action, Air, California, Clean Air Act, Climate Change, D.C. Circuit, Emissions, EPA, Federal Procedure, Greenhouse Gas, Legislation, Oil and Gas, Standing, Supreme Court, United States Supreme Court

On April 25, 2025, the Superior Court of New Jersey, Appellate Division (the “Appellate Division”) in New Jersey Department of Environmental Protection et al. v. Desai et al., ruled on the statute of limitations for state claims brought under the New Jersey Spill Compensation and Control Act (the “Spill Act”), finding that claims concerning remediation do not begin to accrue until the remediation is complete. Read More »

Share | Email| Comments|  Topics: Agency Action, Cleanup, Cost Recovery, ISRA, New Jersey, Spill Act, Statute of Limitations

On April 3^rd, the U.S. District Court of Colorado vacated the U.S. Army Corps of Engineers’ (“USACE”) Record of Decision, Final Environmental Impact Statement, and approval of a dredge-and-fill permit for Denver Water’s expansion project of the Gross Dam and Reservoir in Colorado and remanded the matter back to the agency.  The Court temporarily enjoined Denver Water from continuing construction on the dam pending a hearing on what is “reasonable and necessary” to ensure that the dam will be structurally safe and issued a permanent injunction prohibiting the enlargement of the Gross Reservoir. Read More »

Share | Email| Comments|  Topics: Administrative Procedures Act, Agency Action, Army Corps, Clean Water Act, Climate Change, Colorado, Injunction, NEPA, Permits, Water

In a January 17, 2025 opinion in the cases of Montana Wildlife Federation et al. v. Deb Haaland et al. and Western Watersheds Project et al. v. Deb Haaland et al., the United States Court of Appeals for the Ninth Circuit examined a number of oil and gas leases in Idaho and Montana sold during the prior Trump administration, vacating some and overturning vacatur of others. The opinion offers insight into how a court may look to analyze improper agency action in instances where significant economic expenditure has already taken place. Read More »

Share | Email| Comments|  Topics: Agency Action, Citizens Suit, Exploration, Federal Land Policy and Management Act, Leases, Mineral Rights, NEPA, Ninth Circuit, Oil and Gas, Public Lands

In Marin Audubon Society v. Federal Aviation Administration, No. 23-1067 (D.C. Cir. Nov. 12, 2024), the United States Court of Appeals for the District of Columbia Circuit unexpectedly held that, despite nearly fifty years of precedent, the White House’s Council on Environmental Quality (“CEQ”) lacks the authority to promulgate binding regulations for the purpose of implementing the National Environmental Policy Act (“NEPA”). Read More »

Share | Email| Comments|  Topics: Agency Action, Council on Environmental Quality, D.C. Circuit, Loper Bright, NEPA