The Final Supplemental EIS/OEIS is now available for viewing.

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NORTHWEST

Training and Testing

Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement

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NORTHWEST

Training and Testing

Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement

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NORTHWEST

Training and Testing

Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement

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NORTHWEST

Training and Testing

Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement

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NORTHWEST

Training and Testing

Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement

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NORTHWEST

Training and Testing

Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement

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NORTHWEST

Training and Testing

Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement

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Welcome to the U.S. Navy's website for the Northwest Training and Testing Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement (EIS/OEIS).

The Department of the Navy (Navy) has completed a final supplement to the 2015 Northwest Training and Testing (NWTT) Final EIS/OEIS to assess the potential environmental impacts associated with military readiness activities within the NWTT Study Area, referred to as the "Study Area." Military readiness activities include training and research, development, testing, and evaluation activities, referred to as "training and testing."

The supplement to the 2015 NWTT Final EIS/OEIS supports proposed ongoing and future activities conducted at sea and in associated airspace within the Study Area beyond 2020. Proposed activities are similar to those that have occurred in the Study Area for decades and that were previously analyzed in the 2015 document.

In the Final Supplemental EIS/OEIS, the Navy evaluated new, relevant information, such as more recent marine mammal density data and scientific information, and updated previous environmental analyses as appropriate. The Navy prepared the Final Supplemental EIS/OEIS to support the issuance of federal regulatory permits and authorizations under the Marine Mammal Protection Act and the Endangered Species Act.

Watch an informational video about the importance of Navy training and testing in the Study Area.