Supreme Court: Guam Air Force NEPA Review Arguments Heard

• The Supreme Court heard arguments on October 7, 2026, regarding the U.S. Air Force's hazardous waste disposal on Guam's beaches.
• The Guam nonprofit Prutehi Guåhan sued the Air Force, alleging failure to conduct environmental reviews under the National Environmental Policy Act (NEPA) for munitions disposal.
• The Air Force disposes of World War II-era munitions at Andersen Air Force Base through controlled detonations and burn pits, with a 2021 permit application for 30,000 lbs of detonation and 5,000 lbs of open burning.
• Justices questioned the Air Force's argument that its operations are governed solely by the Resource Conservation and Recovery Act (RCRA) and not NEPA, noting Congress has not explicitly waived NEPA in this context.
• Prutehi Guåhan emphasized NEPA's critical importance for Guam residents due to their limited political representation and influence over federal decisions.

Justice Sonia Sotomayor highlighted that Congress frequently waives NEPA requirements but has not done so in this specific context, suggesting the Act's default applicability.

The U.S. Supreme Court recently heard arguments concerning the U.S. Air Force's disposal of hazardous waste on Guam's beaches, specifically addressing whether these operations are subject to environmental review under the National Environmental Policy Act (NEPA). On October 7, 2026, justices considered a challenge brought by the Guam-based nonprofit Prutehi Guåhan, represented by legal advocates from Earth Justice, who expressed optimism following the proceedings. The core of the dispute centers on the Air Force's practices at Andersen Air Force Base, located on Guam's northern coast, where unexploded World War II-era weapons and munitions are disposed of through controlled detonations or burn pits.

The lawsuit initiated by Prutehi Guåhan alleges that the Air Force failed to submit the required environmental impact statements and environmental assessments under NEPA. This legal action stems from a 2021 permit application by the Air Force to detonate approximately 30,000 pounds and open burn 5,000 pounds of waste munitions. For nearly four decades, the Guam Environmental Protection Agency (GEPA) had approved these disposal permits, but in 2021, the agency delayed the Air Force's renewal application following public comments, paving the way for the current legal challenge.

The Air Force urged the Supreme Court to dismiss Prutehi Guåhan’s lawsuit, arguing that the permitting application was not yet a final decision and therefore could not be challenged. Furthermore, the federal government contended that the military's munitions disposal activities are governed by the Resource Conservation and Recovery Act (RCRA), a different federal statute specifically addressing hazardous waste, implying NEPA was not applicable. However, the Supreme Court justices appeared skeptical of the notion that the Air Force might not be bound by both federal statutes.

Justice Sonia Sotomayor highlighted that Congress frequently waives NEPA requirements but has not done so in this specific context, suggesting the Act's default applicability. The justices noted that NEPA is generally required during the permitting process unless Congress explicitly states otherwise. Prutehi Guåhan asserts that the materials comprising the munitions, such as black powder, red and white phosphorus, and tear gas, pose significant risks to nearby reefs, other ecosystems, and the island's primary aquifer in the north, underscoring the necessity of a thorough environmental review.

The case also brings into sharp focus Guam's unique territorial status and its implications for federal projects. Monaeka Flores, Executive Director of Prutehi Guåhan, emphasized that Guam is a "colony of the United States," lacking political equity, voting representation in Congress, and the ability to vote for the president. This limited influence means that residents have restricted opportunities to shape federal government decisions impacting their environment and daily lives.

For Guam, the National Environmental Policy Act (NEPA) serves as a crucial mechanism for ensuring accountability and public participation in federal projects. Flores underscored that NEPA carries significantly more weight in the territory due to these political realities, making its application to military hazardous waste disposal and other federal activities particularly vital for the island's residents and environment.

While the Supreme Court justices expressed broad concern about potentially precluding all NEPA review for the Air Force’s munitions detonations, they also voiced apprehension regarding the timing of the lawsuit. Justice Elena Kagan pointed out a "gigantic contingency" if the Air Force's permit were later approved under different conditions by the Guam Environmental Protection Agency. She suggested that allowing the lawsuit to proceed at this stage could prove to be a "big waste of time" if a NEPA obligation review could be more effectively conducted once the final permit terms are known.

This judicial deliberation highlights the complex balance between ensuring environmental oversight and avoiding potentially premature legal challenges. The court's questioning indicated a deep engagement with the procedural aspects of environmental law, particularly how federal environmental rules intersect with the specific circumstances of U.S. territories and military operations like those at Andersen Air Force Base.

This Supreme Court review could significantly clarify the applicability and scope of the National Environmental Policy Act (NEPA) to U.S. military operations and federal projects in U.S. territories like Guam. Lawyers advising federal agencies, particularly the Department of Defense, or environmental advocacy groups in these regions should monitor the outcome for potential new compliance obligations regarding environmental impact assessments and public participation requirements for hazardous waste disposal and other federal activities.

Source: Reporting based on Courthouse News coverage