(a) If no request for hearing is timely filed as provided in §904.201(a), the NOVA becomes effective as the final administrative decision and order of NOAA 30 days after service of the NOVA or on the last day of any delay period granted.

(b) If a request for hearing is timely filed in accordance with §904.201(a), the date of the final administrative decision is as provided in subpart C of this part.