Federal Register - February 22, 2021
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Source: Federal Register
10687
Federal Register / Vol. 86, No. 33 / Monday, February 22, 2021 / Notices TABLE 13AREA OF LEVEL A AND LEVEL B HARASSMENT ZONESContinued
Area of level B
harassment zone km2
Area of level A harassment zone km2
LF cetaceans 14-in H-pile vibratory
48-in pipe pile impact
19.69-in sheet pile vibratory
25-in sheet pile vibratory
MF cetaceans
0.00
7.80
0.00
0.00
0.00
0.01
0.00
0.00
Phocids 0.00
2.23
0.00
0.00
3.14
14.58
67.68
67.68
TABLE 14ESTIMATED LEVEL B HARASSMENT TAKES BY SPECIES, PILE SIZE AND TYPE, AND INSTALLATION/REMOVAL
METHOD
Activity
Estimated duration days
DH4
Sheet Pile
Anchor Pile 11.5-inch Hpile
Mooring Dolphins 48inch Pipe Pile
Spud Piles 14-inch Hpile
South Bridge Abutment Dock Face Sheet Pile ..
Tailwall Sheet Pile
Anchor Pile 14-inch Hpile
North Bridge Abutment Dock Face Sheet Pile ..
Tailwall Sheet Pile
Anchor Pile 14-inch Hpile
Barge Bridge Mooring Dolphins 48inch Pipe Piles
Spud Piles 14-inch Hpiles
Total
Level B Harassment Take Authorized 75%
of Total
Calculated level B harassment takes Bowhead whale
Gray whale
Beluga whale b
Ringed seal
Spotted seal
Bearded seal
36
41.65
0.08
20.85
668.04
133.61
113.57
9
0.06
0
0.03
0.90
0.18
0.15
10
2.49
0
1.25
39.98
8.00
6.80
12
0.64
0
0.32
10.34
2.07
1.76
23
23
26.61
26.61
0.05
0.05
13.32
13.32
426.80
426.80
85.36
85.36
72.56
72.56
1
0.02
0
0.01
0.34
0.07
0.06
24
17
27.76
19.67
0.05
0.04
13.90
9.85
445.36
315.46
89.07
63.09
75.71
53.63
1
0.02
0
0.01
0.34
0.07
0.06
4
1.00
0
0.50
15.99
3.20
2.72
4
0.21
0
0.11
3.45
0.69
0.59
164
146.74
0.27
73.46
2353.8
470.76
400.15
123
110
a2
55
1,765
353
300
a 75
percent of the calculated total is 0.2 takes, however, to account for group size Clarke et al., 2017, NMFS is authorizing two Level B harassment takes of gray whale.
b Includes updated density data from 2019 ASAMM surveys Clarke et al., 2020.
TABLE 15CALCULATED LEVEL A HARASSMENT TAKES BY SPECIES, PILE SIZE AND TYPE, AND INSTALLATION/REMOVAL
METHOD
tkelley on DSKBCP9HB2PROD with NOTICES2
Activity
Estimated duration days
DH4
Sheet Pile
Anchor Pile 11.5-inch H-pile
Mooring Dolphins 48inch Pipe Pile
Spud Piles 14-inch Hpile
South Bridge Abutment Dock Face Sheet Pile Tailwall Sheet Pile
Anchor Pile 14-inch Hpile
North Bridge Abutment Dock Face Sheet Pile Tailwall Sheet Pile
VerDate Sep<11>2014
20:43 Feb 19, 2021
Calculated level A harassment takes Bowhead whale
Gray whale
Beluga whale c d
Ringed seal c
Spotted seal c
Bearded seal c
36
0
0
0
0
0
0
9
0.69
0
0
3.16
0.63
0.54
10
1.33
0
0
6.11
1.23
1.05
12
0
0
0
0
0
0
23
23
0
0
0
0
0
0
0
0
0
0
0
0
1
0.05
0
0
0.25
0.05
0.04
24
17
0
0
0
0
0
0
0
0
0
0
0
0
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