# Takes of Marine Mammals Incidental to Specified Activities; Taking Marine Mammals Incidental to Sand Island Pile Dike Repairs in the Columbia River
**AGENCY:**
National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), Commerce.
**ACTION:**
Notice; issuance of incidental harassment authorization.
**SUMMARY:**
In accordance with regulations implementing the Marine Mammal Protection Act (MMPA) as amended, notification is hereby given that NMFS has issued an incidental harassment authorization (IHA) to the U.S. Army Corps of Engineers (USACE) for authorization to take marine mammals incidental to the Sand Island Pile Dike Repairs Project in the Mouth of the Columbia River (MCR).
**DATES:**
This authorization is effective from August 1, 2025, through July 31, 2026.
**ADDRESSES:**
Electronic copies of the application and supporting documents, as well as a list of the references cited in this document, may be obtained online at: *https://www.fisheries.noaa.gov/national/marine-mammal-protection/incidental-take-authorizations-construction-activities.* In case of problems accessing these documents, please call the contact listed below.
**FOR FURTHER INFORMATION CONTACT:**
Robert Pauline, Office of Protected Resources, NMFS, (301) 427-8401.
**SUPPLEMENTARY INFORMATION:**
**MMPA Background and Determinations**
The MMPA prohibits the “take” of marine mammals, with certain exceptions. Among the exceptions is section 101(a)(5)(D) of the MMPA (16 U.S.C. 1361 *et seq.* ) which directs the Secretary of Commerce (as delegated to NMFS) to allow, upon request, the incidental, but not intentional, taking by harassment of small numbers of marine mammals by U.S. citizens who engage in a specified activity (other than commercial fishing) within a specified geographical region if certain findings are made and the public has an opportunity to comment on the proposed IHA.
Specifically, NMFS will issue an IHA if it finds that the taking will have a negligible impact on the species or stock(s) and will not have an unmitigable adverse impact on the availability of the species or stock(s) for taking for subsistence uses (where relevant). Further, NMFS must prescribe the permissible methods of taking and other “means of effecting the least [practicable] adverse impact” on the affected species or stocks and their habitat, paying particular attention to rookeries, mating grounds, and areas of similar significance, and on the availability of such species or stocks for taking for certain subsistence uses (referred to here as “mitigation”). NMFS must also prescribe requirements pertaining to the monitoring and reporting of such takings. The definitions of key terms, such as “take,” “harassment,” and “negligible impact,” can be found in the MMPA and the NMFS' implementing regulations (see 16 U.S.C. 1362; 50 CFR 216.103).
On June 23, 2025, a notice of NMFS' proposal to issue an IHA to the USACE for take of marine mammals incidental to the Sand Island Pile Dike Repairs project in the MCR was published in the *Federal Register* (90 FR 26541). In that notice, NMFS indicated the estimated numbers, type, and methods of incidental take proposed for each species or stock, as well as the mitigation, monitoring, and reporting measures that would be required should the IHA be issued. The *Federal Register* notice also included analysis to support NMFS' preliminary conclusions and determinations that the IHA, if issued, would satisfy the requirements of section 101(a)(5)(D) of the MMPA for issuance of the IHA. The *Federal Register* notice included web links to a draft IHA for review, as well as other supporting documents.
No substantive comments were received during the public comment period. There are no changes to the specified activity, the species taken, the proposed numbers, type, or methods of take, or the mitigation, monitoring, or reporting measures in the proposed IHA notice. No new information that would change any of the preliminary analyses, conclusions, or determinations in the proposed IHA notice has become available since that notice was published, and therefore, the preliminary analyses, conclusions, and determinations included in the proposed IHA are considered final.
**National Environmental Policy Act**
To comply with the National Environmental Policy Act of 1969 (NEPA; 42 U.S.C. 4321 *et seq.* ) and NOAA Administrative Order (NAO) 216-6A, NMFS must review our proposed action ( *i.e.,* the issuance of an IHA) with respect to potential impacts on the human environment.
This action is consistent with categories of activities identified in Categorical Exclusion B4 (IHAs with no anticipated serious injury or mortality) of the Companion Manual for NAO 216-6A, which do not individually or cumulatively have the potential for significant impacts on the quality of the human environment and for which we have not identified any extraordinary circumstances that would preclude this categorical exclusion. Accordingly, NMFS has determined that the issuance of the proposed IHA qualifies to be categorically excluded from further NEPA review.
**Endangered Species Act**
Section 7(a)(2) of the Endangered Species Act of 1973 (ESA; 16 U.S.C. 1531 *et seq.* ) requires that each Federal agency ensures that any action it authorizes, funds, or carries out is not likely to jeopardize the continued existence of any endangered or threatened species or result in the destruction or adverse modification of designated critical habitat. To ensure ESA compliance for the issuance of IHAs, NMFS consults internally whenever we propose to authorize take for endangered or threatened species.
NMFS has authorized take of humpback whale Mainland Mexico and Central America/Southern Mexico DPS, which are listed under the ESA. The effects of this Federal action were adequately analyzed in NMFS' Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for the Sand Island Pile Dike Repair Project, dated June 14, 2022 which concluded that the take NMFS has authorized through this IHA will not jeopardize the continued existence of any endangered or threatened species.
**Authorization**
Accordingly, consistent with the requirements of section 101(a)(5)(D) of the MMPA, NMFS has issued an IHA to the USACE for authorization to take marine mammals incidental to Sand Island Pile Dike Repairs Project in the MCR.
Dated: July 29, 2025.
Kimberly Damon-Randall,
Director, Office of Protected Resources, National Marine Fisheries Service.