This report captures the most significant trends in NEPA litigation, drawing insights from over a decade of appellate and district court data to illuminate the burdens and inefficiencies imposed by the federal environmental review system. While the National Environmental Policy Act (NEPA) was conceived as a procedural safeguard to consider environmental impacts before action is taken, its modern application frequently delays critical projects without meaningfully enhancing environmental outcomes.
This project primarily seeks to increase access to data on NEPA litigation, thereby fostering informed discussion and policy reform aimed at reducing unnecessary delays while preserving the intent of the law. Ultimately, the findings underscore how NEPA litigation disproportionately serves as a delay mechanism rather than a tool for achieving substantive environmental improvements.
Major infrastructure projects are essential to the provision of abundant and affordable energy, lowering carbon emissions that drive climate change, managing the nation’s forests to mitigate wildfire risk, mining and refining critical minerals and other commodities, and other strategic US policy priorities. The National Environmental Policy Act (NEPA) is now widely understood as an impediment to timely, orderly, and cost-effective infrastructure investment and deployment. Private developers and public permitting agencies alike express frustrations with procedural requirements under NEPA, which differ by project type, agency, and other criteria.
The initial plan was to perform commercial thinning on 933 acres, prescribed fire and mechanical thinning on 3326 acres, precommercial thinning on 400 acres, and improve wildlife habitat on 1678 acres. Their original Environmental Assessment received a Finding of No Significant Impact (FONSI) in their original NEPA decision.
But before the project could proceed, the U.S. Forest Service—the most frequent agency defendant in NEPA litigation—was hit with a lawsuit from Conservation Congress, a “grass-roots” organization based in Montana, claiming that the project did not comply with NEPA, the Endangered Species Act (ESA), and the National Forest Management Act (NFMA). Conservation Congress argued that the project failed to do the due diligence to protect the Northern Spotted Owl, a species listed as “threatened” under the ESA.
The initial lawsuit, first launched in September of 2013, was litigated for almost three-and-a-half years, before the Eastern District Court of California ruled in February of 2017 that the Forest Service and their partners did, indeed, fail to comply with NEPA’s standards by “failing to take a hard look” and “failing to develop a reasonable range of alternatives” in assessing the project’s impact on the Northern Spotted Owl’s habitat. The court ordered an injunction on the project until the Forest Service provided supplementary information clarifying the project.
The Forest Service and their partners obliged and the court ruled in March of 2018 that the Smokey Project was no longer considered in violation of NEPA, thus dissolving the injunction. The Conservation Congress appealed the decision; however, the Ninth Circuit Court ruled in June of 2019 that the Forest Service did not violate NEPA.
But before the project could begin in earnest, the August Complex Fire—the largest fire in California’s history—erupted, and burned over the entirety of the Smokey Project’s designated land. The August Complex Fire burned over 1 million acres, likely destroying large swaths of old growth forest, impinging on Northern Spotted Owl habitat, and threatening biodiversity.
The August Complex Fire, along with the number of other fires that burned in California and Oregon in the late summer and fall of 2020, produced a smoke gall that traveled as far as Sweden, and was a key contributor in the “orange skies days” in the Bay Area in early September.
It’s impossible to argue that the delay of the Smokey Project’s 7000 acres of hazardous fuels reduction and habitat restoration meaningfully contributed to the August Complex Fire. But, by delaying the project for years, Conservation Congress likely did more damage to the natural habitat of the Northern Spotted Owl than any amount of Forest Service intervention could have. The fuels reduction steps could have dramatically reduced the impact of the fire, better maintained the ecosystem for more species, and protected the area of the forest designated by the project.
And the Smokey Project was not the only forest management project that Conservation Congress held up in court. In the period of time of our study, Conservation Congress was responsible for 24 NEPA lawsuits related to forest management in California alone—about 37% of all California-based forest management NEPA cases over that time. The organization, led and administered by Denise Boggs of Great Falls, Montana, solely exists to counter U.S. Forest Service projects in court. From 2011 to 2023, the organization spent just under $2.1 million delaying 29 much needed forest management and fuels reduction projects in California and other western states. Boggs has been celebrated as a Grizzly Hero by the Grizzly Bear Times, and is a contributor to the population control group Global Population Speak Out.
Between 2010 and 2024, California endured more than 8000 wildfires a year that burned, in total, more than 16 million acres—about 16 percent of the state’s total landmass.
While these fires are, in part, made worse by increasing air temperature and low humidity and groundwater caused by climate change, the long history of extreme fire suppression and the idea that we must leave forests completely untouched have increased the likelihood and volatility of wildfires in California. Dense vegetation also makes forest fires burn hotter and produce more smoke, while limiting the ability of firefighters to access fires.
In recent years, the U.S. Forest Service, among other state and national agencies, have moved away from fire suppression and begun mechanical thinning, prescribed fires, and other wildfire fuels reduction practices. But, these projects, like broader Forest Service projects, have been met with consistent opposition from conservation and environmental groups who oppose logging and any manipulation of forest and wildlands. These groups claim that fuels reduction projects threaten wildlife habitat and old-growth forests, pointing to specific species that might be harmed by the often relatively small-scale projects.
The United States is unable to protect its forests at the necessary scale, let alone build the large infrastructure and energy projects that underpin material abundance.
Long gone are the days of the Hoover Dam, Golden Gate Bridge, and the Empire State Building. In their place we have rooftop solar, a half-assed electric vehicle charging infrastructure, and low density housing. The infamous California High-Speed Rail project, first proposed in 1979, has cost taxpayers billions with no end in sight. Originally slated to go from San Francisco to Los Angeles and on to Las Vegas, the current construction is focused on Governor Gavin Newsom’s pared-down plan to go from Merced to Bakersfield, but even that section has come up against budget constraints and heavy delays.
This is not necessarily the case for everything. Approximately 96% of all federal projects receive categorical exemptions under NEPA, creating a smooth runway for developers and the federal agencies involved. But for larger projects, NEPA review presents a significant barrier. For the 4% of projects not categorically exempt, developers and agencies must produce either an Environmental Assessment (EA) or an Environmental Impact Statement (EIS), or, in some cases, both. Projects that produce an EA or EIS face what we call the “procedural hangover.” That is, after issuing a final NEPA decision, agencies are potentially met with years of uncertainty before their NEPA documents are challenged in court and a federal judge can rule on the case. This stretch of time between final agency action and final judicial decision has become an unspoken final step of the NEPA process. The anticipated litigation has reshaped how NEPA is implemented, influencing how agencies prepare documents and which projects investors are willing to pursue. The median project in our dataset faced 2.5 years of “procedural hangover.”
On a national scale, our findings expose that litigation brought under NEPA adds substantial financial uncertainty to essential infrastructure projects and often fails to achieve its intended environmental goals. What began as a broad expression of governmental care for the environment has given way to a staggering volume of lawsuits, predominantly brought by private environmental nonprofits, and has contributed to a burdensome, time-consuming review process. From the catastrophic fires of the West to the surging energy prices in the Northeast, NEPA’s legal framework has grown to undermine the environmental objectives it was initially designed to protect.
If NEPA is to function as an effective tool for safeguarding the environment, policymakers and stakeholders alike must work to streamline the process so that it supports–rather than hinders–the nation’s transition to a future of cleaner and more abundant energy and resources. Our responsibility is to ensure effective and lasting reform, beginning with a clear understanding of where and how the current process falls short.
Project | Category | Type | Plaintiff(s) | Prevailing Party | Contested Document | Docket Num | Citation | Time in Litigation | Total Delay |
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