Biological Opinion on the Incidental Harassment Authorization to Allow for Incidental Takes of Marine Mammals During Shallow Hazards Survey in the Chukchi Sea, Alaska

This opinion addresses the potential effects from authorization of a “small take” permit under section 101 (a)(5) of the Marine Mammal Protection Act, for certain oil and gas exploration activities in the U. S. Chukchi Sea in 2011. It provides an assessment of those actions on the continued existence of the bowhead, fin, and humpback whales. It also provides measures to conserve the species and mitigate impact. This biological opinion incorporates much of the information provided by PR1, as well as pertinent research on the whales and matters related to oil exploration. Traditional knowledge and the observations of Inupiat hunters are presented, along with information gained through scientific research. This combined knowledge contributes to a more complete understanding of these issues. A reasonable assessment of potential effects can only be made by considering both these systems of knowledge.

Statoil acquired 16 leases in the Chukchi Sea during Lease Sale 193 held in February 2008. The leased areas are located ~240 km (150 mi) west of Barrow and ~160 km (~100 mi) northwest of Wainwright. During the open water season of 2010, Statoil conducted a 3D seismic survey over its lease holdings and the surrounding area. The data gathered during that survey are currently being analyzed in order to determine potential well locations on the leases. These analyses will be completed prior to commencement of the site survey program. During the open water season of 2011, Statoil proposes to conduct shallow hazards and site clearance surveys and soil investigations.

Action Agency: NOAA Fisheries Permits, Conservation, and Education Division

NMFS Consultation Number: AKR-2011-6545