36 C.F.R. § 1228.274 Restrictions on transferred records.
Title 36 - Parks, Forests, and Public Property
(a) General. Before records are transferred to the National Archives, the head of an agency may state in writing restrictions that appear to him or her to be necessary or desirable in the public interest on the use or examination of records. The head of an agency must, however, justify and cite the statute or Freedom of Information Act exemption (5 U.S.C. 552(b)) that authorizes placing restrictions on the use or examination of records being considered for transfer. If the Archivist agrees, restrictions will be placed on the records. (b) Records less than 30 years old. Unless required by law, the Archivist will not remove or relax restrictions placed upon records less than 30 years old without the concurrence in writing of the head of the agency from which the material was transferred or of his or her successor, if any. If the transferring agency has been terminated and there is no successor in function, the Achivist is authorized to relax, remove or impose restrictions in the public interest. (c) Records 30 or more years old. After the records have been in existence for 30 years or more, statutory or other restrictions referred to in this section shall expire unless the Archivist determines, after consulting with the head of the transferring agency, that the restrictions shall remain in force for a longer period. Such restrictions may be extended by the Archivist beyond 30 years only for reasons consistent with standards established in relevant statutory law, including the Freedom of Information Act (5 U.S.C. 552). Restrictions are systematically extended beyond 30 years where agencies advise NARA on the SF 258 that a particular category of records requires such protection. NARA has identified specific categories of records, including classified information and information that would invade the privacy of an individual, which may require extended protection beyond 30 years. See 36 CFR part 1256. [57 FR 22434, May 28, 1992]
Title 36: Parks, Forests, and Public Property
PART 1228—DISPOSITION OF FEDERAL RECORDS
Subpart L—Transfer of Records to the National Archives of the United States
§ 1228.274 Restrictions on transferred records.

