Welcome Welcome to the official website of the Environmental Assessment (EA) for Permanent Special Use Airspace Establishment and Modifications at Marine Air Ground Task Force Training Command, Marine Corps Air Ground Combat Center, Twentynine Palms, California (“Combat Center”). This website was created to share information with the public about the Proposed Action and provide an opportunity to submit comments. The United States Marine Corps (USMC) and the Federal Aviation Administration (FAA) invited your to participation in the National Environmental Policy Act (NEPA) process through review of the Draft EA. Your participation in this process has assisted the USMC and the FAA in identifying and addressing your environmental concerns regarding this project.

Additional information on the airspace associated with the Combat Center can be found here: Special Use Airspace.

About the EA

The Final EA assesses the potential effects resulting from the proposed establishment of new permanent Special Use Airspace (SUA) and the modifications to existing SUA at the Combat Center.


Proposed Action & Alternatives

Public Involvement

There were key opportunities for public review and input throughout the process. The Draft EA was available for a 45-day public review period from August 1 to September 15, 2025. All comments received were considered in preparation of the Final EA.


Announcements

The Notice of Availability of the Final EA and Finding of No Significant Impact (FONSI) was published in the following newspapers for three publication days each:

  • The Desert Trail

  • Hi-Desert Star

  • Desert Sun

  • San Bernardino Sun

  • Riverside Press Enterprise

  • Victorville Daily Press

  • Big Bear Grizzly

  • Today’s New-Herald Havasu News


Section 508 Compliance and Geographic Information System (GIS)-based Figures
At present, the accessibility of GIS in compliance with Section 508 of the Rehabilitation Act is limited. The inherent graphical nature of GIS and the volumes of data represented make compliance difficult. EA maps developed from GIS software currently do not meet the full Americans with Disabilities Act (ADA) and Section 508 accessibility requirements. If you use assistive technology and the format of these pages prevents you from obtaining necessary data, please contact the Webmaster

Please revisit this website as the content will be updated frequently.

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