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Federal Register / Vol. 86, No. 157 / Wednesday, August 18, 2021 / Notices TABLE 3PILE INSTALLATION AND REMOVAL DURATION
Pile type
Number of piles
36-in. piles 2 pier Bents 2, 3, and 4
32-in. piles pier abutment Bent 1
24-in. RHIB rigid hull inflatable boat fender
24-in. template piles
24-in. retaining wall
24-in. H piles retaining wall
Pile Removal 24-in.
Sheetpile Removal
Anode Installation
Rock chipping

Up to 18
4.
3
16.
2.
Up to 9.
16
20
0
0.
Up to 88

Total days of installation 1
47
16

4
4 18
89

1 This
is a conservative estimate. It is possible that 24-in. piles may be driven on the same day as 36-in. piles. If this occurs, overall days may be reduced for pile installation.
2 For the purposes of calculating take, there is reference to Scenario 1A which involves pile installation of two 36-in piles simultaneously. In this table, Scenarios 1 and 1A are synonymous in terms of representing the number of estimated days for installation.

Description of Marine Mammals in the Area of Specified Activities Table 4 lists all species or stocks for which take is expected and proposed to be authorized for this action, and summarizes best available information on the population or stock, including regulatory status under the MMPA and Endangered Species Act. For taxonomy, we follow Committee on Taxonomy 2020. Marine mammals in the Project Area do not constitute stocks under U.S.
jurisdiction; therefore, there are no stock assessment reports. Additional
information on these species may be found in Section 3 of NSFs application.
For species occurring in United States Antarctic Marine Living Resources AMLR survey area of the Southern Ocean, the International Union for the Conservation of Nature IUCN status is provided. The IUCN systematically assesses the relative risk of extinction for terrestrial and aquatic plant and animal species via a classification scheme using five designations, including three threatened categories Critically Endangered, Endangered, and
Vulnerable and two non-threatened categories Near Threatened and Least Concern www.iucnredlist.org/;
accessed June 10, 2021. These assessments are generally made relative to the species global status, and therefore may have limited applicability when marine mammal stocks are defined because we analyze the potential population-level effects of the specified activity to the relevant stock.
However, where stocks are not defined, IUCN status can provide a useful reference.

TABLE 4MARINE MAMMALS POTENTIALLY PRESENT IN THE VICINITY OF THE PROJECT AREA
Common name
ESA/MMPA/IUCN
status 3

Stock 2

Scientific name
Abundance CV 4

Order CetartiodactylaCetaceaSuperfamily Mysticeti baleen whales Family Balaenidae right whales:
Southern right whale
Family Balaenopteridae rorquals:
Humpback whale
Antarctic minke whale
Fin whale
Blue whale
Sei whale

Eubalaena australis

E/D/LC

1,755 0.62.5

Megaptera novaeangliae australis
Balaenoptera bonaerensis
B. physalus quoyi
B. musculus musculus
Balaenoptera borealis

E/D/LC
-/NT
E/D/VU
E/D/EN
E/D/EN

9,484 0.28.5
18,125 0.28.5
4,672 0.42.5
1,700.13
626.14

Superfamily Odontoceti toothed whales, dolphins, and porpoises Family Physeteridae:
Sperm whale
Family Ziphiidae beaked whales:
Arnouxs beaked whale
Southern bottlenose whale
Family Delphinidae:
Hourglass dolphin
Killer whale
Long-finned pilot whale

Physeter macrocephalus

E/D/VU

12,069 0.17.7

Berardius arnuxii
Hyperoodon planifrons

/DD
-/LC

Unknown.
53,743 0.12.8

Lagenorhynchus cruciger
Orcinus orca 1
Globicephala melas edwardii

-/LC
-/DD
-/LC

144,300 0.17.9
24,790 0.23.8
200,000 0.35.9

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Order CarnivoraSuperfamily Pinnipedia Family Otariidae eared seals and sea lions:
Antarctic fur seal
Family Phocidae earless seals:
Southern elephant seal
Weddell seal
Crabeater seal
Leopard seal

Arctocephalus gazella

South Georgia

-/LC

2,700,000.10

Mirounga leonina
Leptonychotes weddellii
Lobodon carcinophaga
Hydrurga leptonyx

South Georgia

-/LC
-/LC
-/LC
-/LC

401,572.11
500,0001,000,000.12
5,000,00010,000,000.12
222,000440,000.12

1 Three distinct forms of killer whale have been described from Antarctic waters; referred to as types A, B, and C, they are purported prey specialists on Antarctic minke whales, seals, and fish, respectively Pitman and Ensor, 2003; Pitman et al., 2010.
2 For most species in the AMLR, stocks are not delineated and entries refer generally to individuals of the species occurring in the research area.

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