The schedule, hosted on the Federal Permitting Improvement Steering Council’s dashboard, confirms the U.S. Army Corps of Engineers as the lead agency for the project’s environmental review. This milestone arrives following the site's designation as a Covered Project in May 2026, creating a transparent, 29-month timeline for authorizations. By aligning federal oversight with the Alaska Department of Natural Resources’ state-level processes, the roadmap aims to bypass historical regulatory delays.

This synchronized approach stems from an August 2025 memorandum between the state and the federal government, which serves as a template for similar partnerships in other states. For Trilogy Metals, which operates the project through its Ambler Metals joint venture with South32, the public tracking of milestones replaces open-ended regulatory uncertainty with a fixed sequence. Key upcoming benchmarks include the Notice of Intent for an Environmental Impact Statement in September 2026 and a draft statement targeted for October 2027.