43 CFR 2.57 - When may you file an appeal?
(a) You may file an appeal when:
(1) The bureau withholds records, or parts of records;
(4) The bureau did not address all aspects of the request for records;
(b) An appeal under paragraph (a)(8) of this section relates only to the request for expedited processing and does not constitute an appeal of the underlying request for records. Special procedures apply to requests for expedited processing of an appeal (see § 2.63 of this subpart).
(c) Before filing an appeal, you may wish to communicate with the contact person listed in the FOIA response, the bureau's FOIA Officer, and/or the FOIA Public Liaison to see if the issue can be resolved informally. However, appeals must be received by the FOIA Appeals Officer within the time limits in § 2.58 of this subpart or they will not be processed.