Not later than 30 days after the date on which an appellant receives the determination of a hearing officer under section 6997 of this title, the appellant shall submit a written request to the Director for review of the determination in order to be entitled to a review by the Director of the determination.

Not later than 15 business days after the date on which an agency receives the determination of a hearing officer under section 6997 of this title, the head of the agency may make a written request that the Director review the determination.