‘Categorical Exclusion’ Simplifies NPRA Winter Exploration Permits
Photo Credit: Bureau of Land Management (BLM)
To aid companies seeking permits for wintertime oil and gas exploration in the National Petroleum Reserve-Alaska (NPRA), the US Bureau of Land Management (BLM) established what it calls a “categorical exclusion.” This action is meant to improve predictability and reduce burdens for seismic surveys, exploration wells, and plugging and abandonment.
To Nimbly Locate Energy
BLM developed the categorical exclusion after analyzing previous environmental assessments the agency conducted for wintertime exploration in NPRA. BLM says those analyses show that exploration activities resulted in no significant impacts on human health or the environment when conducted under established operating procedures and mitigation measures.
“The BLM has decades of experience analyzing the effects of exploration in the Petroleum Reserve and permitting responsible exploration,” says BLM Alaska State Director Kevin Pendergast. “This categorical exclusion builds on that record to allow developers to more nimbly locate energy resources in the Petroleum Reserve, ultimately increasing domestic energy supply, leading to stable energy costs and more revenue for Alaskan communities and the American public.”
Current Issue
October 2026
Categorical exclusions are categories of actions that have been determined to not typically result in significant environmental impacts, eliminating the need to conduct a full environmental review. Before relying on a categorical exclusion for a proposed project, an agency must verify that there are no extraordinary circumstances, such as potential impacts to endangered species or cultural resources, that may result in the project having any significant environmental effects.
Wintertime exploration relies on temporary ice roads, ice pads, and snow routes where the only potential sign of exploration after the snow melts is generally the wellhead, if drilled.
Under the One Big Beautiful Bill Act of 2025, BLM must hold at least five lease sales in NPRA by 2035, each offering no fewer than 4 million acres. BLM rescinded a 2024 rule that restricted leasing and development in NPRA, withdrew three policy documents to expand limitations in special areas, and approved an updated integrated activity plan that reopens nearly 82 percent of the reserve to oil and gas leasing.