Notice of Intent To Prepare a Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement for the Mariana Islands Training and Testing (ID# EISX-007-17-USN-1744382878)

Department of the Navy (DoN), Department of Defense (DoD).

Pursuant to the National Environmental Policy Act (NEPA), the National Environmental Policy Act of 1969, DoN regulations, and Presidential Executive Order 12114, the DoN (including both the United States (U.S.) Navy and the U.S. Marine Corps (USMC)) as the lead agency, jointly with the U.S. Air Force, the U.S. Army, and the U.S. Coast Guard (referred to as “Action Proponents”), announce their intent to prepare a supplement to the 2015 Mariana Islands Training and Testing (MITT) Environmental Impact Statement (EIS)/Overseas EIS (OEIS) and the 2020 MITT Supplemental EIS (SEIS)/OEIS. The MITT SEIS/OEIS will include an analysis of training activities (referred to as “training”); research, development, testing, and evaluation (referred to as “testing”) activities; and range modernization and sustainment that will be conducted in the MITT Study Area beginning in July 2027. When discussed together, these activities are referred to as “military readiness activities.”

The 45-day public scoping period begins on June 7, 2025, and ends on July 22, 2025, Chamorro Standard Time (ChST). The scoping period is extended 15 calendar days (from the usual 30-day period) to allow more time to provide comments. The DoN will host a virtual presentation and have public outreach material on the project website during the scoping period to ( printed page 24110) provide information related to the Proposed Action, its purpose and need, alternatives under consideration, environmental resource areas to be analyzed in the SEIS/OEIS, the NEPA process, the consultation under Section 106 of the National Historic Preservation Act (NHPA), and public involvement opportunities.

Comments on the scope of the SEIS/OEIS or information regarding the project's potential to affect historic properties pursuant to section 106 of the NHPA through the project website at www.nepa.navy.mil/​mitteis or by mail to: Naval Facilities Engineering Systems Command Pacific, Attention: MITT SEIS/OEIS Project Manager, 258 Makalapa Drive, Suite 100, Pearl Harbor, HI 96860-3134.