43 C.F.R. § 2.58 : Public Lands: Interior — OFFICE OF THE SECRETARY OF THE INTERIOR — FREEDOM OF INFORMATION ACT; RECORDS AND TESTIMONY — ADMINISTRATIVE APPEALS — How long do you have to file an appeal?

(a) Appeals covered by §2.57(a)(1) through (5) of this subpart must be received by the FOIA Appeals Officer no later than 90 workdays from the date of the final response.
(b) Appeals covered by §2.57(a)(6) of this subpart must be received by the FOIA Appeals Officer no later than 90 workdays from the date of the letter denying the fee waiver.
(c) Appeals covered by §2.57(a)(7) of this subpart may be filed any time after the time limit for responding to the request has passed.
(d) Appeals covered by §2.57(a)(8) of this subpart should be filed as soon as possible.
(e) Appeals arriving or delivered after 5 p.m. Eastern Time, Monday through Friday, will be deemed received on the next workday.

43 C.F.R. §2.58

77 FR 76906, 12/31/2012, as amended at 81 FR 92694, 12/20/2016