The link you posted is showing what companies have received authorization for incidental (nonlethal) take of polar bears and walrus in the Beaufort. These authorizations do not allow anyone to kill polar bear and walrus. This is a required authorization for anyone doing work in these habitats which may cause "take" - which includes any behavior change. The authorization allows for work to continue when animals are present and, if warranted in defense of life or property and performed by trained personnel, they allow for hazing of species in order to keep workers and wildlife safe.