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Welcome to the United States (U.S.) Department of the Navy’s (Navy) official website for the Environmental Assessment/Overseas Environmental Assessment (EA/OEA) for the Mariana Islands Range Complex (MIRC) Airspace. The EA/OEA has been prepared to analyze potential environmental impacts relevant to the Navy’s proposed modification and extension of existing training airspace in the range complex, as well as the expansion of the restricted sea space around Farallon de Medinilla (FDM).

The Navy used the findings and decisions of the 2010 MIRC Environmental Impact Statement/Overseas Environmental Impact Statement (EIS/OEIS) to prepare the EA/OEA. Therefore, this EA/OEA is "tiered" off of the MIRC EIS/OEIS, which was completed with community input; a Record of Decision was signed in July 2010.

This website is intended to provide the public and interested groups or agencies with an understanding of the Navy’s proposal, the environmental resources that were analyzed in the MIRC EA/OEA, reasons why the change to the airspace and sea space is necessary, and how the public was involved in the National Environmental Policy Act (NEPA) process. In addition, this website contains information on how the Navy is employing mitigation measures to reduce environmental effects from military training and testing activities.

Public Review and Comment

The MIRC Airspace Draft EA/OEA was released for public review and comment on Dec. 20, 2012. A public comment period was included to give community members an opportunity to submit written comments on the content and analysis included in the MIRC EA/OEA. The comment period closed Monday, Feb. 4, 2013. The Final EA/OEA has been completed and a Finding of No Significant Impact (FONSI) and Finding of No Significant Harm (FONSH) was signed on June 15, 2013. The Final EA/OEA and FONSI/FONSH can be downloaded from this website and is also available at information repositories


Public Open House Information Sessions

Two public open house information sessions were held to inform the public about the Proposed Action and environmental issues analyzed, and to encourage the public to provide written and/or verbal comments on the Draft EA/OEA. Representatives from the Navy provided information and answered questions about the proposed action. The public information sessions were held at the following locations:

Date: Jan. 15, 2013
Location: University of Guam
Leon Guerrero School of Business and Public Administration Building,
Anthony Leon Guerrero Multi-Purpose Rm. 129
Mangilao, Guam 96923
Date: Jan. 17, 2013
Location: Pedro P. Tenorio Multi-Purpose Center in Susupe
Saipan, MP 96950