NEPA After 2025: What the Law Still Requires and What Changed

Most big decisions about Idaho's federal land pass through NEPA at some point: a timber sale, a grazing permit renewal, a powerline right-of-way, a new trail, a mine plan. NEPA is why those decisions leave a paper trail. It is also why that trail is now shorter than it was two years ago.

What triggers NEPA

NEPA is codified at 42 U.S.C. 4321 and the sections that follow it. The core duty is in section 4332(2)(C): a detailed statement for "major Federal actions significantly affecting the quality of the human environment." As amended in 2023, the statement has to cover the reasonably foreseeable environmental effects of the proposed action, the unavoidable adverse effects, a reasonable range of alternatives that are technically and economically feasible and meet the purpose and need, the relationship between short-term uses and long-term productivity, and irreversible commitments of resources.

Three questions decide whether NEPA applies at all.

1. Is it a major Federal action? The 2023 amendments added a definition in 42 U.S.C. 4336e(10): an action the agency determines is subject to "substantial Federal control and responsibility." The statute lists what the term does not include, among them non-Federal actions with little or no Federal funding or control, general revenue sharing, enforcement actions, and non-discretionary actions made under the agency's statutory authority.
2. Is it a final agency action? Section 4336(a) says an agency need not prepare an environmental document if the proposal is not a final agency action under the Administrative Procedure Act, if a categorical exclusion covers it, if preparing the document would clearly conflict with another law, or if the action is non-discretionary and the agency cannot consider environmental factors in deciding it.
3. Which level? If a document is needed, an EIS is required for an action with a reasonably foreseeable significant effect. An EA is required when there is no such effect or the significance is unknown, unless a categorical exclusion applies (section 4336(b)).

Examples help. A Forest Service decision to authorize a commercial timber sale is a federal action. A county's decision to approve a subdivision on private land with no federal permit is not. A subdivision that needs a federal right-of-way across BLM land is a different story, because the right-of-way grant is the federal action. The federal footprint, not the neighborhood, is what NEPA measures.

The three levels

Sources: 42 U.S.C. 4336; USDA 7 CFR Part 1b as summarized by WilmerHale; Federal Register notice 91 FR 64760 (Oct. 13, 2026).

The 2023 amendments: the Fiscal Responsibility Act

In June 2023 Congress amended NEPA as part of the Fiscal Responsibility Act. Most of the new text is in 42 U.S.C. 4336a. In plain terms:

• Deadlines: An EIS is due within 2 years and an EA within 1 year. The clock starts at the earliest of the agency's determination that the document is required, the date the agency tells an applicant its right-of-way application is complete, or the notice of intent. The lead agency may extend a deadline, in consultation with the applicant, only for the additional time needed.
• Page limits: 150 pages for an EIS, 300 pages for an extraordinarily complex one, and 75 pages for an EA, not counting citations and appendices. USDA's procedures let a designated official allow an extraordinarily complex EIS to run from 150 to 300 pages.
• Lead agency: When two or more federal agencies are involved they choose a lead using five factors: magnitude of involvement, approval authority, expertise on environmental effects, duration of involvement and sequence of involvement. If they cannot agree, CEQ designates a lead within 40 days of a request. State, tribal or local agencies can be joint leads.
• Sponsor-prepared documents: The lead agency must set up procedures that allow a project sponsor to prepare an EA or EIS under agency supervision. The agency must independently evaluate the document and take responsibility for it.
• No general right to sue over the clock: The only court route written into the section is for a project sponsor to petition over a missed deadline, and a court that finds a failure generally sets a deadline of no more than 90 days.
• Reporting: Each lead agency reports annually to the House Natural Resources and Senate Environment and Public Works committees on documents that missed their deadlines and why.

The deadlines are targets that Congress tracks. Missing one does not void an agency decision, and the public has no cause of action under 4336a to enforce them. What they change in practice is pressure: an agency choosing between a long EIS and a shorter EA, or between an EA and a CE, now has a statutory clock running on the longer choices.

What happened to the CEQ regulations

For almost 50 years the Council on Environmental Quality, an office in the Executive Office of the President, wrote regulations that every agency followed (40 CFR parts 1500 to 1508). They defined scoping, cooperating agencies, the contents of an EIS and the meaning of "significantly." Agencies layered their own procedures on top.

On February 25, 2025, CEQ published an interim final rule (90 FR 10610) that removed and reserved those parts, and on January 8, 2026 it adopted that rule as final without changes (91 FR 618). The Federal Register notice gives these reasons: Executive Order 14154 revoked the 1977 order that had told CEQ to issue binding NEPA regulations; CEQ said that without that order it doubted NEPA's text authorized binding rules; and a federal court in North Dakota had vacated CEQ's 2024 "Phase 2" rule on February 3, 2025. The rule took effect April 11, 2025. Its DATES section sets a comment deadline of March 27, 2025, although another passage in the preamble refers to comments due April 11, so the notice is not consistent about the comment date. The notice also cites the D.C. Circuit's 2024 statement in Marin Audubon Society v. FAA that CEQ's regulations were not binding rules the agency had authority to issue. People who disagree with the move point to 50 years of consistent practice and to the fact that NEPA itself, at 42 U.S.C. 4332(2)(B), tells agencies to develop procedures in consultation with CEQ. People who support it point to the cost and length of reviews and to the Supreme Court's recent emphasis on text. Both facts are on the record.

The new agency procedures

What the two departments' procedures say about public participation matters most to readers of this module.

• USDA (7 CFR Part 1b), as summarized by WilmerHale: public participation is generally limited to statutory requirements. A notice of intent for an EIS is the one point where public comment is required. Whether to involve the public in an EA or a CE, and whether to publish a draft EIS for comment, is left to the responsible official. For an EIS, officials must consider comments that raise substantive issues and need not respond to every comment individually.
• Interior (Handbook and 43 CFR Part 46): apart from the Federal Register notice of intent for an EIS and any Freedom of Information Act obligations, bureaus are not required to solicit public comment or circulate drafts. They keep discretion to do so. The final rule restored two categorical exclusions the interim rule had dropped, hazardous fuels reduction and post-fire rehabilitation, and limits the fuels exclusion in Ninth Circuit states, which include Idaho.
• Other laws still apply. The Federal Land Policy and Management Act requires public involvement in BLM land use plans (43 U.S.C. 1712(f)). The National Forest Management Act and 36 CFR Part 219 require it for forest plans. Those requirements are separate from NEPA and are covered in lessons 5 and 6.

Agencies also have a legal reason for caution. A procedure in a handbook can be changed faster than one in the Code of Federal Regulations. Interior said that is a feature. A reader trying to track a rule over time should know that a handbook revision may not appear in the Federal Register at all, so the agency's own NEPA page is the place to look.

Seven County Infrastructure Coalition v. Eagle County

The Supreme Court decided Seven County Infrastructure Coalition v. Eagle County, No. 23-975, on May 29, 2025. The case involved a proposed rail line in Utah's Uinta Basin to carry crude oil, and the Surface Transportation Board's EIS for it. The D.C. Circuit had vacated the EIS because the Board did not adequately study the effects of increased oil drilling upstream and refining downstream. The Supreme Court reversed and remanded.

Justice Kavanaugh wrote for the Court. Justices Roberts, Thomas, Alito and Barrett joined. Justice Sotomayor concurred in the judgment, joined by Justices Kagan and Jackson. Justice Gorsuch took no part. The holdings, as reported in the opinion's summary:

• Deference: The court of appeals did not give the agency the "substantial deference" owed to its choices about the scope and contents of an EIS. Courts should defer to agencies on those choices.
• Proposed action: NEPA focuses on the effects of the proposed action itself. The Board did not have to study separate upstream drilling or downstream refining that it did not regulate.
• Procedural statute: NEPA is a procedural requirement and imposes no substantive limit on what an agency may decide.
• Remedy: Courts should not use NEPA to delay or block projects over the effects of other projects. Review is limited.

The three concurring justices agreed the Board's decision should stand but on narrower grounds: the Board lacked authority under its own statute to consider those effects. They said the majority leaned too heavily on policy reasoning.

What it means on the ground: an agency that draws its analysis area tightly, and explains the reason, has a stronger position in court than before. A comment that asks the Forest Service to study the effects of a separate project the agency does not control is less likely to win a court fight. A comment that points to a missing effect of the proposed action itself, with data, still fits squarely within what NEPA requires. The opinion does not say that effects of the proposed action can be ignored.

Notice and comment after the new rules

Before 2025, many Forest Service projects went through a scoping notice, a 30-day comment period on an EA and a 45-day objection period. That stack is shorter now. The Forest Service's October 13, 2026 final rule (91 FR 64760, effective November 12, 2026) sets these time frames for projects that implement land management plans and go through an EA or EIS.

Sources: 91 FR 64760 (final rule); the February 6, 2026 proposal (91 FR, doc. 2026-02392) for the prior figures.

The proposal had set the comment periods at 10 and 20 days. The final rule lengthened them to 15 and 30 days after public comment. Other features of the final rule, as the Federal Register describes them: the responsible official, not a separate reviewing officer, reviews objections; resolution meetings are no longer required; notices move from newspapers to USDA web postings and direct notification such as email lists; objections must tie issues to earlier comments; and supportive-only submissions labeled as objections are set aside. Lesson 8 walks through those steps. Categorical exclusions are outside the objection process by statute, and the designated comment opportunity applies only to projects documented in an EA or EIS.

The rule also contains transition language. If the legal notice for a project's comment period was published before February 6, 2026 (the date of the proposal), the previous rule governs the whole review: the final rule says "the previous 218 rule shall apply to the entirety of the administrative review process." If the notice was published from February 6, 2026 up to the November 12, 2026 effective date and did not say the revised rule may apply, the previous rule also governs. If a notice published in that window did say the revised rule may apply, the project follows whichever rule is in effect when the objection period starts. For every project that begins notice and comment after November 12, 2026, the revised rule applies. "Initiation" means the date the responsible official published the required notice. In short, the old 30-day and 45-day comment periods and the 45-day objection filing period still apply to projects whose notice came before the cutoff, and the same forest can have projects under two different sets of days. Read the notice for any project.

Case study: the Upper Big Wood project near Ketchum

The clearest Idaho example of a project that moved forward without a formal comment period is the Upper Big Wood (also written Upper Bigwood) Vegetation Management project on the Sawtooth National Forest, in the Sawtooth National Recreation Area along Highway 75 north of Ketchum. Here is what the sources say, and where they disagree.

The competing positions are both specific. The Forest Service's case, as reported, is that mountain pine beetle pockets along Highway 75 and the memory of the 2024 Wapiti Fire make treatment urgent. ICL says some version of the project is needed to reduce wildfire risk and insect damage, and asks for a pause to allow more public engagement and a collaborative process. ICL also objects that haul routes could use roads closed under the Big Wood Travel Plan, and that the proposal does not say which wildlife species benefit. Both positions agree on one fact: because the project is expected to be a categorical exclusion, the law gave residents no guaranteed comment window.

A categorical exclusion does not mean nobody can be heard. It means being heard is up to the agency. That is why contacting the deciding official early, in writing, with specific information, matters more than ever for projects at this level. It also means the later fight, if there is one, is in court under the Administrative Procedure Act rather than in an objection process.

Emergencies, exemptions and the Healthy Forests laws

NEPA has always had pressure valves. The ones that matter for Idaho forests and rangeland fall into four groups.

• Statutory exemptions: Congress can exempt a category of action from NEPA in another law. The 2023 amendments recognize that in 42 U.S.C. 4336(a): no document is needed when another law's categorical exclusion or conflict provision applies. The Forest Service's own ski area permit renewal exclusion was dropped from the new USDA list because a statute (16 U.S.C. 497c(i)) already exempts those renewals.
• Emergency actions: Interior's 43 CFR 46.150 lets a bureau act on imminent threats to life, property or important resources without full NEPA review of the urgent step. USDA's procedures allow alternative arrangements for emergency actions where no significant impact is reasonably foreseeable. For the Forest Service objection rule, 36 CFR 218.14 defines an emergency by reference to a determination by the Chief or Associate Chief under section 428 of the Consolidated Appropriations Act of 2012 or its successor. Emergency projects skip the predecisional objection process, but authorized hazardous fuel reduction projects under title I of the Healthy Forests Restoration Act are excluded from that emergency route.
• Healthy Forests Restoration Act of 2003 (HFRA): Title I sets up streamlined review for authorized hazardous fuel reduction projects on Forest Service land. Its section 6515 (16 U.S.C. 6515) creates a predecisional administrative review process that is the sole administrative route for those projects. A person must have submitted specific written comments on the proposed action during scoping or the comment period to take part, and must use that process before suing in federal district court. Congress later added more categorical exclusions for some forest health projects; the current acreage caps and conditions are in 16 U.S.C. 6591a and the sections following it, and I did not confirm them this session.
• Pending legislation: The Fix Our Forests Act (Senate bill S. 1462 in the 119th Congress) would expand emergency authority and categorical exclusions in high-risk areas and limit some objections and legal challenges. As of the latest reporting I found (a Deseret News report dated August 4, 2026), it had cleared the Senate Agriculture Committee but had not received a Senate floor vote. Its supporters say it speeds work that reduces wildfire risk; its opponents say emergency designations skip formal objection periods. Check congress.gov for its status before relying on any description of it.

The Forest Service restructure and why it touches NEPA

In late March 2026 USDA announced a plan to move Forest Service headquarters to Salt Lake City, close regional offices and create state offices, including one in Boise. According to the Idaho Capital Sun's April 15, 2026 report, Idaho's national forests are now split between an Ogden, Utah regional office (southern Idaho) and a Missoula, Montana one (the Panhandle), and would be managed from one Idaho office. USDA said the transition would occur in phases, about 500 employees were expected to relocate, and state directors would keep the same line authority as regional foresters. The report did not say who would sign particular project decisions under the new structure. The effect on NEPA is indirect: fewer specialists at a distance means fewer people to write documents, and the report notes the NEPA changes in the same breath. Lesson 5 covers the restructure in more detail. State only what the sources confirm: I found no source in this session confirming dates for any specific office closing in Idaho.

Challenging a NEPA decision in court

NEPA does not have its own lawsuit provision. A challenge goes through the Administrative Procedure Act. Under 5 U.S.C. 706(2)(A), a court sets aside agency action that is "arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law." The court reviews the administrative record, the file the agency assembled, not new evidence. The Seven County deference rule applies on top of that.

1. Standing: The plaintiff must show a concrete injury, such as loss of use or enjoyment of a specific place, that the court can fix. A general interest in the environment is not enough. Groups usually establish standing through members who use the area.
2. Final agency action: The challenge is to a decision, such as a signed decision notice or ROD, not to a proposal.
3. Exhaustion: If an administrative process such as a Forest Service objection or a BLM appeal to the Interior Board of Land Appeals is the required route, the issue has to be raised there first. For HFRA fuel reduction projects, 16 U.S.C. 6515 makes this explicit and allows a court to excuse exhaustion only in narrow cases.
4. Time limit: A general civil action against the United States must be filed within six years after the right of action accrues (28 U.S.C. 2401(a)). Specific statutes can set shorter periods, and the practical time to act is much shorter because a project may be underway. Lesson 8 covers timing.
5. Remedy: The usual result of a win is a remand: the agency redoes the analysis. It can then reach the same decision.

The Endangered Species Act has a separate citizen-suit provision at 16 U.S.C. 1540(g). In general a suit over an alleged violation cannot begin until 60 days after written notice to the Secretary and the alleged violator.

Endangered Species Act consultation alongside NEPA

Section 7 of the Endangered Species Act (16 U.S.C. 1536) runs on a track parallel to NEPA. Its core duty in 1536(a)(2) is that each federal agency, with help from the Fish and Wildlife Service (for most land and freshwater species) or NOAA Fisheries (for salmon and steelhead), ensure that its actions are not likely to jeopardize a listed species or destroy or adversely modify designated critical habitat, using the best scientific and commercial data available.

Sources: 16 U.S.C. 1536; Phys.org/AP report of the 2022 NOAA review; Jackson Hole News&Guide, Feb. 3, 2026.

Questions and answers

Is NEPA still a law?

Yes. The statute begins at 42 U.S.C. 4321. Congress amended it in 2023. The 2025 changes removed CEQ's regulations and led USDA and Interior to write their own procedures, but the statute itself was not repealed.

What is the difference between an EA and an EIS?

An EA is a concise document, limited to 75 pages by statute, used when significant effects are not expected or are unknown. An EIS is a fuller study, limited to 150 pages (300 for extraordinarily complex actions), used when a significant effect is reasonably foreseeable. An EA ends with a FONSI or a decision to write an EIS. An EIS ends with a record of decision.

Who decides which level applies?

The agency. For the Forest Service, the responsible official, such as a district ranger or forest supervisor, makes the call under USDA's 7 CFR Part 1b. For BLM, the authorized officer does under Interior's procedures. A court can review that choice only on the arbitrary-and-capricious standard.

Do I get to comment on every federal project?

No. The law guarantees comment at an EIS notice of intent. For the Forest Service, a project documented in an EA gets a 15-day designated comment opportunity under the October 2026 rule. A project under a categorical exclusion gets none by rule, though the agency may invite comments. Other laws, such as the planning rules for BLM and forest plans, add their own comment periods.

Why does the Sawtooth project matter beyond Ketchum?

It shows how the new procedures work in practice. A commercial thinning project of roughly 2,500 to 2,800 acres is reported to be moving under a categorical exclusion with an open house instead of a formal comment period. The same route is available to projects elsewhere in Idaho, so what the public can do early becomes more important.

What did Seven County change?

It told courts to defer to agencies on how wide an EIS needs to be, and it said an agency does not have to study the effects of separate projects it does not control. It did not say agencies can ignore the effects of the action in front of them.

What is an extraordinary circumstance?

A fact that makes a categorical exclusion inappropriate for a particular project, such as a nearby listed species, a sensitive cultural site or an unusual hazard. Under USDA's 2026 procedures the list is available for consideration, but none is mandatory. The agency documents its finding in the project file.

Can a state or county be involved in a federal NEPA review?

Yes. A state, tribal or local agency can be a cooperating agency or even a joint lead (42 U.S.C. 4336a(a)). Interior's final rule now codifies lead and cooperating agency selection at 43 CFR 46.220 and 46.225. Lesson 8 covers county coordination.

Where do I find out whether a project is an EA, a CE or an EIS?

Start with the project page on the national forest or BLM office website. The Forest Service Schedule of Proposed Actions lists analysis type, expected decision date and a project contact for each forest. BLM's ePlanning and National NEPA Register list projects. If the page is empty, as the Upper Big Wood page was on September 18, 2026, call the forest supervisor's office.

Hard questions

Do shorter reviews and fewer comment periods speed up work that lowers wildfire risk, or do they remove the checks that catch mistakes?

Both claims have evidence behind them. USDA's preamble to the objection proposal said the old process added roughly 120 to 150 days for an EA and 135 to 165 days for an EIS. Supporters of faster rules argue that delay costs acres of forest to fire and insects. People who want more public process argue that local knowledge, such as the location of closed roads in the Upper Big Wood case, catches errors that an internal review misses. The record to date does not measure which effect is larger in Idaho. Both sides name specific projects; neither side has published a comparison of outcomes before and after 2025.

Is it fair that an agency decides for itself whether to take comment?

The rules were written that way on purpose. The Interior and USDA preambles argue that NEPA does not require comment below the EIS level and that agencies know the projects best. Others argue that the Act's own policy statement favors informed public participation. Courts have not required more than the statute says. What residents can do is ask, early and in writing, and many offices will accept comments they are not required to collect.

If NEPA is procedural, why does it matter?

The disclosure often changes the project. Alternatives, buffers and timing windows come out of the analysis, and the record becomes the basis for a court challenge. Whether that justifies the delay is the argument at the center of this entire debate, and both sides cite real examples.

Does the Seven County decision protect agencies from review?

It protects reasonable judgments about scope from second-guessing. It did not remove the arbitrary-and-capricious test, and the three concurring justices read the case more narrowly than the majority. How lower courts apply it to Forest Service and BLM projects is still developing.

What is still unclear?

Several items are in flux as of October 2026. The Forest Service objection rule takes effect on November 12. The Fix Our Forests Act had not passed the Senate in the reporting I found. The Forest Service restructure is being carried out in phases. I could not confirm whether a decision was signed on the Upper Big Wood project, and the sources differ on its acreage and on whether it was a categorical exclusion or an emergency authorization. Check the project page and the Federal Register before relying on any date in this lesson.