The Director shall conduct a review of the determination of the hearing officer using the case record, the record from the evidentiary hearing under section 6997 of this title, the request for review, and such other arguments or information as may be accepted by the Director. Based on such review, the Director shall issue a final determination notice that upholds, reverses, or modifies the determination of the hearing officer. However, if the Director determines that the hearing record is inadequate, the Director may remand all or a portion of the determination for further proceedings to complete the hearing record or, at the option of the Director, to hold a new hearing. The Director shall complete the review and either issue a final determination or remand the determination not later than—