( 1 ) The Secretary's decision (the decision on review ) to affirm, vary or set aside a decision takes effect:
(a) on the day specified in the decision on review; or
(b) if a day is not specified--on the day on which the decision on review was made.
( 2 ) The Secretary must notify the applicant of the decision on review, and the reasons for that decision, as soon as practicable after making the decision on review.