Welcome to the Department of the Navy's website for the Supplemental Environmental Impact Statement (SEIS) for the "Guam and CNMI Military Relocation; Relocating Marines from Okinawa, Japan to Guam."

The Department of the Navy (DON) is pleased to announce the availability of the FINAL SUPPLEMENTAL ENVIRONMENTAL IMPACT STATEMENT (SEIS) FOR THE GUAM AND COMMONWEALTH OF THE NORTHERN MARIANA ISLANDS MILITARY RELOCATION (2012 ROADMAP ADJUSTMENTS) that assesses the potential environmental consequences of establishing a cantonment area, a family housing area, a live-fire training range complex, and associated infrastructure on Guam.

The SEIS is specific to the relocation of the reduced number of Marines and dependents than was previously analyzed in the 2010 Final Environmental Impact Statement for the Guam and CNMI Military Relocation.

The SEIS contains a description of the potential effects to the environment and a thorough examination of 18 resource areas for all of the alternatives.

Download a copy of the Final SEIS here on the SEIS website (, or review a hardcopy either at the Robert F. Kennedy Memorial Library located in the University of Guam or the Nieves M. Flores Memorial Library in Hagatña.

With the release of the Final SEIS, the Department of the Navy anticipates issuing a Record of Decision later this summer.

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