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Project Overview Fact Sheet

This is an image of the cover of the Northwest Training and Testing Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement project fact sheet booklet.

Notice of Availability/Notice of Public Meetings

This is an image of the Notice of Availability and Notice of Public Meetings for the Northwest Training and Testing Draft Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement.

Previous Environmental Analyses

2020 NWTT Supplemental EIS/OEIS

2021 NWTT Record of Decision

2021 Northwest Training and Testing Record of Decision (September 2021)

NWTT Record of Decision (September 2021)
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2020 NWTT Final Supplemental EIS/OEIS

Northwest Testing and Training Final Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement Volume 1 (September 2020) NWTT Final Supplemental EIS/OEIS Volume 1 (September 2020)
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Northwest Testing and Training Final Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement Volume 2 (September 2020) NWTT Final Supplemental EIS/OEIS Volume 2 (September 2020)
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Northwest Testing and Training Final Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement Volume 3 (September 2020) NWTT Final Supplemental EIS/OEIS Volume 3 (September 2020)
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Northwest Testing and Training Final Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement Volume 4 (September 2020) NWTT Final Supplemental EIS/OEIS Volume 4 (September 2020)
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2020 NWTT Supplemental EIS/OEIS Technical Reports

Criteria and Thresholds for U.S. Navy Acoustic and Explosive Effects Analysis (Phase III) (June 2017) Criteria and Thresholds for U.S. Navy Acoustic and Explosive Effects Analysis (Phase III) (June 2017)
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Dive Distribution and Group Size Parameters for Marine Species Occurring in the U.S. Navy’s Northwest Training and Testing Study Area (August 2020) Dive Distribution and Group Size Parameters for Marine Species Occurring in the U.S. Navy’s Northwest Training and Testing Study Area (August 2020)
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Marine Mammal Strandings Associated with U.S. Navy Sonar Activities (June 2017) Marine Mammal Strandings Associated with U.S. Navy Sonar Activities (June 2017)
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Quantifying Acoustic Impacts on Marine Mammals and Sea Turtles: Methods and Analytical Approach for Phase III Training and Testing (August 2018) Quantifying Acoustic Impacts on Marine Mammals and Sea Turtles: Methods and Analytical Approach for Phase III Training and Testing (August 2018)
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United States Navy Marine Species Density Database Phase III for the Northwest Training and Testing Study Area Technical Report (August 2020) U.S. Navy Marine Species Density Database Phase III for the Northwest Training and Testing Study Area Technical Report (August 2020)
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NWTT Regulatory Documents

Biological and Conference Opinion on the Navy’s Northwest Training and Testing Activities (Consultation Tracking Number: OPR-2019-00786) (October 2020)
Biological and Conference Opinion on the Navy’s Northwest Training and Testing Activities (Consultation Tracking Number: OPR-2019-00786) (October 2020)
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United States Fish and Wildlife Service Final Biological Opinion for Northwest Training and Testing Activities Activities (USFWS Reference: 01EWFW00-2020-F-0251-R0002) (June 2021)
U.S. Fish and Wildlife Service Final Biological Opinion for NWTT Activities (USFWS Reference: 01EWFW00-2020-F-0251-R0002) (June 2021)
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Final Rule for Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to the United States Navy Training and Testing Activities in the Northwest Training and Testing (Northwest Training and Testing Activities) Study Area (November 2020)
Final Rule for Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to the U.S. Navy Training and Testing Activities in the Northwest Training and Testing (Northwest Training and Testing Activities) Study Area (November 2020)
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Proposed Rule for Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to the U.S. Navy Training and Testing Activities in the Northwest Training and Testing (Northwest Training and Testing Activities) Study Area (June 2020)
Proposed Rule for Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to the U.S. Navy Training and Testing Activities in the Northwest Training and Testing (NWTT) Study Area (June 2020)
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National Oceanic and Atmospheric Administration Federal Register Notice of Receipt of Application for a Letter of Authorization for Taking Marine Mammals Incidental to United States Navy Training and Testing Activities in the Northwest Training and Testing Study Area (August 2019)
National Oceanic and Atmospheric Administration Federal Register Notice of Receipt of Application for a Letter of Authorization for Taking Marine Mammals Incidental to U.S. Navy Training and Testing Activities in the Northwest Training and Testing Study Area (August 2019)
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2015 NWTT EIS/OEIS

2016 NWTT Record of Decision

Northwest Testing and Training Record of Decision (October 2016)

NWTT Record of Decifsion (October 2016)
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Northwest Training and Testing Final Environmental Impact Statement/Overseas Environmental Impact Statement Updates, Clarifications, and Corrections (October 2016))

Northwest Training and Testing Final Environmental Impact Statement/Overseas Environmental Impact Statement Updates, Clarifications, and Corrections (October 2016)
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2015 NWTT Final EIS/OEIS

Northwest Testing and Training Final EIS/OEIS Volume 1 (October 2015) NWTT Final EIS/OEIS Volume 1 (October 2015)
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Northwest Testing and Training Final Environmental Impact Statement/Overseas Environmental Impact Statement Volume 2 (October 2015) NWTT Final EIS/OEIS Volume 2 (October 2015)
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Northwest Testing and Training Final Environmental Impact Statement/Overseas Environmental Impact Statement Volume 1 (October 2015) NWTT Final EIS/OEIS Volume 3 (October 2015)
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Northwest Testing and Training Final Environmental Impact Statement/Overseas Environmental Impact Statement Volume 4 (October 2015) NWTT Final EIS/OEIS Volume 4 (October 2015)
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2015 NWTT EIS/OEIS Technical Reports

Analysis of Animal Avoidance Behavior and Mitigation Effectiveness Technical Report (August 2015)

Analysis of Animal Avoidance Behavior and Mitigation Effectiveness Technical Report (August 2015)
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Determination of Acoustic Effects on Marine Mammals and Sea Turtles (November 2015))

Determination of Acoustic Effects on Marine Mammals and Sea Turtles (November 2015)
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Marine Mammal Stranding Report (February 2013)

Marine Mammal Stranding Report (February 2013)
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Revised Navy Marine Species Density Database Technical Report (May 2015)

Revised Navy Marine Species Density Database (NMSDD) Technical Report (May 2015)
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NWTT Regulatory Documents

National Marine Fisheries Service Biological Opinion for Northwest Testing and Training Activities (November 2015))

National Marine Fisheries Service Biological Opinion for NWTT Activities (November 2015)
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United States Fish and Wildlife Service Biological Opinion for Northwest Testing and Training Activities (July 2016)

U.S. Fish and Wildlife Service Biological Opinion for NWTT Activities (July 2016)
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United States Fish and Wildlife Service Reinitiated Biological Opinion for Northwest Testing and Training Activities (December 2018)

U.S. Fish and Wildlife Service Reinitiated Biological Opinion for NWTT Activities (December 2018)
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National Marine Fisheries Service Letter of Authorization for the Taking of Marine Mammals Incidental to United States Navy Testing Activities in the Northwest Testing and Training Study Area (Letter to Commander, Naval Sea Command) (November 2015)

National Marine Fisheries Service Letter of Authorization for the Taking of Marine Mammals Incidental to U.S. Navy Testing Activities in the NWTT Study Area (Letter to Commander, Naval Sea Command) (November 2015)
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National Marine Fisheries Service Letter of Authorization for the Taking of Marine Mammals Incidental to United States Navy Testing Activities in the Northwest Testing and Training Study Area (Letter to Commander, United States Pacific Fleet) (November 2015)

National Marine Fisheries Service Letter of Authorization for the Taking of Marine Mammals Incidental to U.S. Navy Testing Activities in the NWTT Study Area (Letter to Commander, U.S. Pacific Fleet) (November 2015)
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