43 CFR § 2.62
When can you expect a decision on your appeal?
June 11, 2020
(a) The basic time limit for responding to an appeal is 20 workdays after receipt of an appeal meeting the requirements of §2.59 of this subpart.
(b) If the Department is unable to reach a decision on your appeal within the given time limit for response, the appropriate deciding official for FOIA appeals will notify you of your statutory right to seek review in a United States District Court.
[81 FR 11131, Mar. 3, 2016]