Public review and comment period is now OPEN for the Draft EA. The Navy invites the public to attend a public meeting on June 4, 2026, and provide comments during the public comment period from May 27, 2026 to June 25, 2026.

Welcome

Welcome to the United States (U.S.) Department of the Navy’s (Navy) environmental planning website for the Draft Environmental Assessment (EA) for Homeporting of the Columbia-class Submarine at Naval Base Kitsap-Bangor (NBK-Bangor), Washington.

The Navy is preparing an EA in accordance with the National Environmental Policy Act (NEPA), and consistent with the Department of Defense NEPA Implementing Procedures and invites the public to review and comment on the Draft EA. The Draft EA is available for public review on the Documents page.

Proposed Action

The Navy proposes to replace eight Ohio-class submarines currently homeported at NBK-Bangor with up to eight Columbia-class submarines, and demolish, construct, and renovate facilities and infrastructure at three upland sites (Upland-Site North, Keyport Annex, Upland Site-South) and at the Pier Site at NBK-Bangor. The Navy would also improve stormwater infrastructure and create construction laydown and staging areas for materials and temporary parking.

The purpose of the Proposed Action is to ensure continuation of the Navy’s sea-based strategic deterrence mission at NBK-Bangor. The need for the Proposed Action is to ensure the U.S. can respond to current and future threats and meet national defense objectives and policies.

Additional project information pertaining to the Proposed Action can be found in the Fact Sheet.