50 CFR § 18.145 - Procedure to obtain a Letter of Authorization (LOA).

---
identifier: "/us/cfr/t50/s18.145"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "50 CFR § 18.145 - Procedure to obtain a Letter of Authorization (LOA)."
title_number: 50
title_name: "Wildlife and Fisheries"
section_number: "18.145"
section_name: "Procedure to obtain a Letter of Authorization (LOA)."
chapter_name: "UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR"
subchapter_number: "B"
subchapter_name: "TAKING, POSSESSION, TRANSPORTATION, SALE, PURCHASE, BARTER, EXPORTATION, AND IMPORTATION OF WILDLIFE AND PLANTS"
part_number: "18"
part_name: "MARINE MAMMALS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "16 U.S.C. 1361"
regulatory_source: "39 FR 7262, Feb. 25, 1974, unless otherwise noted."
cfr_part: "18"
---


# 18.145 Procedure to obtain a Letter of Authorization (LOA).

(a) The applicant must submit the request for authorization to the U.S. Fish and Wildlife Service (Service) Alaska Region Marine Mammals Management Office (MMM), MS 341, 1011 East Tudor Road, Anchorage, Alaska, 99503, or by email at *[email protected],* at least 30 days prior to the start of the planned activity.

(b) The request for an LOA must comply with the requirements set forth in §§ 18.149 through 18.151 and must include the following information:

(1) An operational plan for the activity;

(2) A digital geospatial file of the project footprint, including sound isopleths;

(3) A site-specific marine mammal monitoring and mitigation plan that specifies the procedures to monitor and mitigate the effects of the activities on sea otters; and

(4) When appropriate, a plan of cooperation, which is a documented plan that describes measures to mitigate potential conflicts between planned project activities and subsistence hunting.