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Assistant Commandant - Shore

Office of Environmental Management

 

Environmental Planning and Historic Planning

The National Environmental Policy Act (NEPA) requires all Federal agencies to consider the impacts of proposed actions on the human environment and involve the public in the NEPA process. The Environmental Planning and Historic Preservation (EPHP) Team publishes all Environmental Impact Statements and Environmental Assessments of regional or national significance for public notice and comment. Interested parties can view recent draft and final NEPA documents below. Contact information for each project are included in each posting.

On April 23, 2019, SHORE-V released the U.S. Coast Guard Environmental Planning Policy, COMDTINST 5090.1 (series) (EP CI) and the Environmental Planning Implementing Procedures (EP IP).  The EP CI mandates the use of the EP IP.  The two documents now align with the DHS NEPA policy, Implementation of the National Environmental Policy Act, Department of Homeland Security Instruction Manual 023-01-001-01 (series) and replace the old Coast Guard National Environmental Policy Act (NEPA) Implementing Procedures and Policy for Considering Environmental Impacts, COMDTINST 16475.1D, which has been cancelled. The EP CI and IP include significant changes to the Coast Guard environmental planning process and provide improved policy and procedures for complying with both NEPA and Environmental Effects Abroad of Major Federal Actions, Executive Order (EO) 12114.  Coast Guard members engaged in environmental planning efforts or taking actions that trigger NEPA or EO 12114 requirements must read both the EP CI and IP in order to implement their requirements effectively.  Significant changes from COMDTINST M16475.1D included in the EP CI and IP include but are not limited to:

  • Policy and procedures on the requirements of EO 12114.
  • Pre-planning process and notification requirements for NEPA and EO 12114.
  • Timing of compliance with other related environmental mandates (ESA, NHPA, etc.).
  • Requirements to track and report mitigation and monitoring commitments.
  • Requirement to establish formal agreements for providing environmental planning support.
  • Specific guidance for both the acquisitions and shore facilities management programs

Policy Documents

USCG Environmental Planning Policy, COMDTINST 5090.1

Environmental Planning Implementing Procedures for COMDTINST 5090.1 Environmental Planning Policy (updated Feb 2025)

Record of Decision, Base Seattle Final Programmatic Environmental Impact Statement

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BASE SEATTLE, Wash., April 9, 2026 —

The Coast Guard completed the Programmatic Environmental Impact Statement (PEIS) process for Base Seattle Expansion and Modernization and signed a Record of Decision (ROD) on March 19, 2025. Having reviewed the potential impacts to the environment, cultural resources, and the economy, identified in the PEIS, the Coast Guard selected to only implement part of the Proposed Action.  

The Coast Guard intends to implement select components of Alternative 1, as identified in the Final PEIS.  The Service will seek to modernize Base Seattle and acquire the 1.1-acre Belknap property and up to 5.5 acres of land at Terminal 46 to provide an Anti-Terrorism/Force Protection security buffer to our current Base footprint. The Coast Guard will operate with four berths at Slip 36 and continues to explore opportunities for future expansion in coordination with stakeholders.

Additional information can be found in the ROD, which is available below. We look forward to continuing our partnership with the City of Seattle, Recognized Tribes, and surrounding communities. 


Related Documents

USCG PEIS BASE SEATTLE EXPASION AND MODERNIZATION ROD
Base Seattle NEPA PEIS rod Belknap Slip 36 Terminal 46