Biological Opinion and Concurrence (NMFS) for the U.S. Army Corps of Engineers on the JNU Rock Dump Reconstruction Project in Juneau, Alaska

NMFS Consultation Number: AKRO-2025-03118

This opinion considers the effects of in-water pile driving of steel piles and mooring dolphins in marine waters, construction vessel traffic, and support operations.

The action may affect the endangered North Pacific right whale, threatened Mexico Distinct Population Segment (DPS) humpback whale, endangered Central American DPS humpback whale, endangered blue whale, endangered fin whale, endangered sperm whale, endangered Sei whale, endangered Western North Pacific DPS gray whale, Southern resident DPS killer whale and their critical habitat, and endangered Western DPS Steller sea lion. There is no designated critical habitat located within the action area for Mexico DPS humpback whale or Steller sea lions.

This biological opinion is based on information provided in the May 2026 BA submitted by PND Engineers and the IHA Application and Proposed IHA (91 FR 57550, September 10, 2026). Other sources of information relied upon include consultation communications (emails and virtual meetings), recent consultations completed in the same region, previous monitoring reports, and marine mammal surveys conducted in and around Juneau, Alaska. A complete record of this consultation is on file at NMFS's Alaska Region office.

Last updated by Alaska Regional Office on 10/27/2026

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