50 CFR § 217.236 - Letters of Authorization.
(a) To incidentally take marine mammals pursuant to these regulations, the Corps must apply for and obtain an LOA.
(b) An LOA, unless suspended or revoked, may be effective for a period of time not to exceed the expiration date of these regulations.
(c) If an LOA expires prior to the expiration date of these regulations, the Corps may apply for and obtain a renewal of the Letter of Authorization.
(d) In the event of projected changes to the activity or to mitigation and monitoring measures required by an LOA, the Corps must apply for and obtain a modification of the Letter of Authorization as described in § 217.237.
(e) The LOA shall set forth:
(1) Permissible methods of incidental taking;
(2) Means of effecting the least practicable adverse impact (i.e., mitigation) on the species, its habitat, and on the availability of the species for subsistence uses; and
(3) Requirements for monitoring and reporting.
(f) Issuance of the LOA shall be based on a determination that the level of taking will be consistent with the findings made for the total taking allowable under these regulations.
(g) Notice of issuance or denial of an LOA shall be published in the Federal Register within thirty days of a determination.
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