Incidental Take Authorization: Hilcorp Alaska and Eni Ice Road and Ice Trail Construction and Maintenance on Alaska’s North Slope
Summary
Upon application from Hilcorp Alaska, LLC (Hilcorp) and Eni US Operating Co. Inc. (Eni), NOAA Fisheries is issuing regulations under the Marine Mammal Protection Act (MMPA) for the taking of small numbers of marine mammals incidental to ice road and ice trail construction, maintenance, and operation in Alaska’s North Slope, over the course of 5 years (2020-2025). These regulations allow NOAA Fisheries to issue Letters of Authorization (LOA) for the incidental take of marine mammals during the specified construction and maintenance activities carried out during the rule’s period of effectiveness, set forth the permissible methods of taking, set forth other means of effecting the least practicable adverse impact on marine mammal species or stocks and their habitat, and set forth requirements pertaining to the monitoring and reporting of the incidental take.

Federal Register
Supporting Materials
- LOA Issued to Hilcorp Alaska, LLC (pdf, 7 pages)
- LOA Issued to Eni US Operating Co. Inc. (pdf, 7 pages)
- Revised LOA Application (pdf, 90 pages)
- Original LOA application (pdf, 89 pages)
- Environmental Assessment (pdf 56 pages)
- Eni Plan of Cooperation (pdf, 45 pages)
- Hilcorp Draft Plan of Cooperation (pdf, 186 pages)
- Biological Opinion
- Monitoring Report 2022-2023 (pdf, 94 pages)
- Public Comments
- References (pdf, 5 pages)