Section 1 Introduction - National Marine Fisheries Service - NOAA

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NBK at Bangor EHW-1 Pile Replacement Project Final <strong>Marine</strong> Mammal Monitoring Report Table 18. Pinniped Behaviors Observed During Construction Versus Non-Construction Periods During EHW-1 PRP Behavior Construction Variable [percent (n)] No Yes Breach 0.092 (1) 0 (0) Change Direction 0.092 (1) 0.18 (2) Chuff 0.28 (3) 0 (0) Dive 9.05 (98) 2.40 (26) Enter Water 0.18 (2) 0.18 (2) Flush 0 (0) 0.092 (1) Forage 0.83 (9) 0.092 (1) Haul out 0.83 (9) 0.28 (3) Look 20.41 (221) 3.23 (35) Mill 1.85 (20) 0.28 (3) Porpoise 0.18 (2) 0 (0) Rest 7.11 (77) 0.92 (10) Sink 21.98 (238) 2.77 (30) Slap 0.46 (5) 0 (0) Spyhop 0.37 (4) 0 (0) Swim 17.36 (188) 3.42 (37) Travel 3.14 (34) 0.74 (8) Unknown 0.092 (1) 0.37 (4) Vocalize 0.46 (5) 0.28 (3) Table 19. Cetacean Behaviors Observed Before, During, and After Pile Driving Activities During EHW-1 PRP Behavior Percentages Among All Categories [percent (n)] Before During After Swim 20 (2) 40 (4) 10 (1) Chuff 10 (1) 0 (0) 10 (1) Dive 0 (0) 10 (1) 0 (0) Bangor, Washington 58
NBK at Bangor EHW-1 Pile Replacement Project Final <strong>Marine</strong> Mammal Monitoring Report Figure 15. Cetacean Behaviors Before, During, and After Pile Driving Incidences of “hauling out,” and “milling” decreased during the post-construction period in relation to the pre-construction period. Most behaviors, such as “diving,” “sinking,” “vocalizing,” “traveling,” “resting,” and “looking,” increased post-construction in relation to pre-construction. “Entering the water,” “diving,” “traveling,” “swimming,” “slapping,” “sinking,” “resting,” “looking,” “foraging,” “hauling out,” and “vocalizing” increased during construction (Table 20, Figure 16). Table 20. Pinniped Behaviors Before, During, and After Pile Driving Behavior Percentages Among All Categories [percent (n)] Before During After Dive 1.3 (2) 12.3 (19) 2.6 (4) Enter Water 0 (0) 2.6 (4) 0 (0) Forage 0 (0) 1.9 (3) 0 (0) Haul Out 1.3 (2) 1.9 (3) 0 (0) Look 3.9 (6) 14.8 (23) 4.5 (7) Mill 2.6 (4) 2.6 (4) 0.6 (1) Rest 0 (0) 2.6 (4) 1.3 (2) Sink 1.9 (3) 3.9 (6) 3.9 (6) Slap 0 (0) 0.6 (1) 0 (0) Swim 1.9 (3) 15.5 (24) 1.9 (3) Travel 0 (0) 6.5 (10) 1.3 (2) Unknown 0 (0) 0 (0) 1.3 (2) Vocalize 0.6 (1) 2.6 (4) 1.3 (2) Bangor, Washington 59
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Section 1 Introduction - National Marine Fisheries Service - NOAA

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