7.33—Extension.

(a) In unusual circumstances as specified in this section, the time limits prescribed in § 7.31 and § 7.32 may be extended by written notice to the person making the request setting forth the reasons for such extension and the date on which a determination is expected to be dispatched. Such notice may not specify a date that would result in a cumulative extension of more than 10 Federal working days without providing the requestor an opportunity to modify the request as noted in this section. As used in this paragraph, “unusual circumstances” means, but only to the extent reasonably necessary to the proper processing of the particular request: