To fill any vacancy occasioned by the failure of any person selected as a member or as an alternate member of the Committee to qualify, or in the event of the removal, resignation, disqualification, or death of any member or alternate member, a successor for such person's unexpired term shall be nominated and selected in the manner set forth in §§ 989.29 and 989.30, insofar as such provisions are applicable. If nomination to fill any vacancy is not filed within 40 calendar days after such vacancy occurs, the Secretary may select an eligible person to fill such vacancy without regard to nomination.