43 C.F.R. § 2.29 How long do I have to file an appeal?
Title 43 - Public Lands: Interior
(a) Appeals covered by §§2.28(a)(1), (2), and (4) thru (6). Your appeal must be received by the FOIA Appeals Officer no later than 30 workdays after the date of the final response or 30 workdays after receipt of any records that are provided to you. (b) Appeals covered by §2.28(a)(3). You may file an appeal any time after the time limit for responding to your request has passed. (c) Appeals covered by §2.28(a)(7). You should file an appeal as soon as possible.
Title 43: Public Lands: Interior
PART 2—RECORDS AND TESTIMONY; FREEDOM OF INFORMATION ACT
Subpart D—FOIA Appeals
§ 2.29 How long do I have to file an appeal?