28 CFR 17.28: Automatic declassification.
(a) Subject to paragraph (b) of this section, all classified information contained in records that are more than 25 years old that have been determined to have permanent historical value shall be declassified automatically on April 17, 2000. Subsequently, all classified information in such records shall be automatically declassified not later than 25 years after the date of its original classification with the exception of specific information exempt from automatic declassification pursuant to section 3.4 (b) and (d) of Executive Order 12958.
(b) At least 220 days before information is declassified automatically under this section, the respective component head shall notify the Assistant Attorney General for Administration through the Department Security Officer of any specific information they propose to exempt from automatic declassification. The notification shall include:
(1) A description of the information;
(2) An explanation of why the information is exempt from automatic declassification and must remain classified for a longer period of time; and
(3) A specific date or event for declassification of the information whenever the information exempted does not identify a confidential human source or human intelligence source.
(c) Proposed exemptions under this section shall be forwarded to the DRC, which shall recommend a disposition of the exemption request to the Assistant Attorney General for Administration. When the Assistant Attorney General for Administration determines the exemption request is consistent with this section, he or she will submit it to the Executive Secretary of the Interagency Security Classification Appeals Panel.
(d) Declassification guides that narrowly and precisely define exempted information may be used to exempt information from automatic declassification. Declassification guides must include the exemption notification information detailed in paragraph (b) of this section, and be approved pursuant to paragraph (c) of this section.