Seven County Infrastructure Coalition v. Eagle County: A Turning Point For The National Environmental Policy Act
Jun 06 2025 • 8 Min Read
This article is the first in a new Womble Bond Dickinson thought leadership series on the potential impacts of ongoing federal legislation and administrative actions on the clean energy sector. The focus of this series will be on how companies can safeguard their interests and maximize opportunities in a fast-changing environment.
Last week, the Supreme Court issued its eagerly awaited National Environmental Policy Act decision in Seven County Infrastructure Coalition v. Eagle County. We were not disappointed. The Court held, 8-0,1 that the U.S. Surface Transportation Board reasonably explained in an environmental impact statement (“EIS”) that the agency did not need to consider the indirect environmental impacts of its decision to approve an 88-mile railroad spur that would connect Uinta Basin oil and gas resources to the national rail network. The Court of Appeals for the D.C. Circuit had set aside the STB’s decision on the basis that the STB did not consider the indirect environmental impacts that would result from upstream oil and gas drilling or from downstream petroleum refining. The Supreme Court reversed.
Apparently hearing our call from last spring that NEPA reforms were necessary to streamline permitting processes, the majority opinion in Seven County acts as a “course correction of sorts,” and an important and substantial step to reign NEPA back in. As the Court describes, “a 1970 legislative acorn has grown over the years into a judicial oak that has hindered infrastructure development under the guise of just a little more process.” In an opinion that will survive decades, the Supreme Court demands a high degree of deference in reviewing agency analyses performed pursuant to NEPA.
The most striking line of the majority opinion2 is that “[t]he bedrock principle of judicial review in NEPA cases can be stated in a word: Deference.” In concluding that courts owe a high degree of deference in the NEPA context, the majority noted that NEPA is a “purely procedural statute that, as relevant here, simply requires an agency to prepare an EIS—in essence, a report.”
The Court marched through each aspect of an agency’s NEPA analysis to which courts owe deference. First, “[t]he agency is better equipped to assess what facts are relevant to the agency’s own decisions,” including whether an EIS is sufficiently detailed. Second, an agency has substantial deference in identifying “significant environmental impacts and feasible alternatives” and the reviewing court must be at its “most deferential” when reviewing such decisions. Third, regarding the scope of an EIS, courts must provide “broad latitude” so that the agency may “draw a ‘manageable line.’”
Notably, the Court distinguished the NEPA deference regime from its recent decision in Loper Bright Enterprises v. Raimondo. When an agency interprets a statute, as in Loper, judicial review of the agency’s interpretation is de novo. In contrast, when the agency exercises discretion granted by a statute or is evaluating issues of fact, the Administrative Procedure Act’s deferential arbitrary-and-capricious review standard applies.
Thus, regarding some of the most litigated NEPA issues where the agency exercises discretion granted by statute (the detail, impacts and alternatives, and scope), the Court instructs that reviewing courts must defer to the agency. In the majority’s words:
When assessing significant environmental effects and feasible alternatives for purposes of NEPA, an agency will invariably make a series of fact-dependent, context-specific, and policy-laden choices about the depth and breadth of its inquiry—and also about the length, content, and level of detail of the resulting EIS. Courts should afford substantial deference and should not micromanage those agency choices so long as they fall within a broad zone of reasonableness.
In addition to the level of deference owed to agency NEPA decisions, the Court also noted that even if an EIS “falls short in some respects,” that is not necessarily reason to vacate the underlying approval. Thus, the “zone of reasonableness” declared by the Supreme Court is quite broad. Indeed, the Court did not hesitate to clarify that the “adequacy of an EIS is relevant only to the question of whether an agency’s final decision (here, to approve the railroad project) was reasonably explained.”
Central to this particular case was whether the EIS at issue should have evaluated the possible environmental effects from upstream oil drilling and downstream oil refining, projects that were separate from the proposed railway. This question of “reasonably foreseeable impacts” has been a long-debated issue, and one that nearly every presidential administration has opined on. The Supreme Court largely put the issue to bed:
While indirect environmental effects of the project itself may fall within NEPA’s scope even if they might extend outside the geographical territory of the project or materialize later in time, the fact that the project might foreseeably lead to the construction or increased use of a separate project does not mean the agency must consider that separate project’s environmental effects. . . This is particularly true where, as here, those separate projects fall outside the agency’s regulatory authority.
The Court concluded that NEPA requires agencies to focus on the environmental effects of the project at issue. And even then, the agency’s only obligation is to prepare an “adequate report.”
There is one area, however, where the Court suggested that agency determinations may not be subject to the same level of deference: decisions to deny projects based on environmental impacts. In footnote 4, the Court explained that a denied applicant may argue that the agency acted unlawfully in weighing the environmental consequences of a proposed action. In these circumstances, “NEPA does not alter those judicial inquiries.”
Justices Sotomayor, Kagan, and Jackson concurred in the Court’s reversal, but they would have done so on narrower grounds. Under their view, and the 2004 Supreme Court case Department of Transportation v. Public Citizen, the STB did not need to consider the environmental impacts of upstream oil and gas development or downstream oil refining because the STB is not authorized to consider such impacts under its organic statute. The concurrence explained: “That is the rule of Public Citizen.”
And that leads to the most notable aspect of the concurrence: its framing of the majority opinion as grounding its “analysis largely in matters of policy” and ruling more broadly than necessary to decide the case at hand. The concurrence itself is significant evidence that the majority opinion has significantly shifted the lay of the land in NEPA cases by expressly affording agencies high degrees of deference.
The majority decision will affect all NEPA cases, whereas the concurrence’s reasoning would only have affected decisions where the agency in question is not authorized to consider environmental impacts. Other agencies that approve federal projects, including the U.S. Department of the Interior, the U.S. Forest Service, and the U.S. Nuclear Regulatory Commission, would arguably not be affected under the Public Citizen line of cases because those agencies are directed to consider environmental impacts. Under the majority’s framework, however, all agencies enjoy broad deference in limiting the scope of their analysis or deciding that certain impacts on the environment are not significant.
The team at Womble Bond Dickinson has extensive experience navigating NEPA compliance in securing project approvals, including administrative changes we discussed earlier this Spring. We can help you navigate these and other changes affecting your project development.
1 Justice Gorsuch recused himself from the case.
2 Justice Kavanaugh wrote the majority opinion, in which Chief Justice Roberts and Justices Thomas, Alito, and Barrett joined.