49 CFR 701.10 - Appeals.
(a) Appeals of adverse determinations.
(1) The requesting party may appeal:
(i) A decision to withhold any requested record in whole or in part;
(ii) A determination that a requested record does not exist or cannot be located;
(iii) A denial of a request for expedited treatment; or
(iv) Any disputed fee matter or the denial of a request for a fee waiver.
(3) The appeal must be in writing and specify the relevant facts and the basis for the appeal. The appeal letter and envelope must be marked prominently “Freedom of Information Act Appeal” to ensure that it is properly routed.
(b) Responses to appeals. The decision on any appeal shall be made in writing.
(1) A decision upholding an adverse determination in whole or in part shall contain a statement of the reason(s) for such action, including any FOIA exemption(s) applied. The requesting party shall also be advised of the provision for judicial review of the decision contained in 5 U.S.C. 552(a)(4)(B).