Commander United States Pacific Fleet Naval Sea Systems Command Naval Air Systems Command SPAWAR Office of Naval Research Science & Technology

Welcome to the United States (U.S.) Department of the Navy's Hawaii-Southern California Training and Testing Environmental Impact Statement (EIS)/Overseas Environmental Impact Statement (OEIS) website, an online resource for information concerning the training and testing activities within the in-water areas from Hawaii to the coast of Southern California.

The U.S. Navy invites you to participate in the National Environmental Policy Act (NEPA) process for the Hawaii-Southern California Training and Testing Environmental Impact Statement/Overseas Environmental Impact Statement (EIS/OEIS).

The Draft EIS/OEIS is under Development
The scoping period ended on January 12, 2016. All comments received during this scoping period will be considered in the Draft EIS/OEIS, Summer 2017.
HSTT EIS/OEIS Study Area Map

New HSTT Website Now Available
The new HSTT EIS/OEIS website is now available to publish and review documents related to HSTT activities beginning in 2018. 
HSTT Notice of Intent (NOI) is Available
The HSTT NOI was published in the Federal Register on November 12, 2015 and is available for download read more ...