5 C.F.R. § 890.1038 – Deciding a contest without additional fact-finding.

(a) Written decision. The suspending official shall issue a written decision on the contest within 30 days after the record closes for submitting evidence, arguments, and information. The suspending official may extend this timeframe for good cause.
(b) No further administrative review available. The suspending official's decision is final and is not subject to further administrative review.