5 CFR 1820.5 - Responses to requests.
(a)General. Ordinarily, OSC shall have 20 business days from when a request is received to determine whether to grant or deny the request. Once OSC makes a determination to grant a FOIA request for records, or makes an adverse determination denying a request in any respect, it will notify the requester in writing. Adverse determinations, or denials of requests, consist of: A determination to withhold any requested record in whole or in part; a determination that a requested record does not exist or cannot be located; a determination that a record is not readily reproducible in the form or format sought by the requester; a determination that what has been requested is not a record subject to the FOIA; a determination on any disputed fee matter, including a denial of a request for a fee waiver; and a denial of a request for expedited treatment.
(b)Adverse determinations. A notification to a requester of an adverse determination on a request shall include:
(2) A statement that the denial may be appealed under section 1820.6(a), with a description of the requirements of that subsection.
(c)Dispute resolution program. OSC shall inform FOIA requesters at all stages of the FOIA process of the availability of dispute resolution services. In particular, OSC's FOIA acknowledgement letters shall notify requesters that the FOIA Liaison is available to assist them with requests. The acknowledgment letter and any agency response will include a notice that the FOIA Public Liaison may provide dispute resolution services, and will also notify the requester of the dispute resolution services provided by the National Archives and Records Administration's (NARA) Office of Government Information Services (OGIS).
(d)Maintenance of files. OSC must preserve federal record correspondence and copies of requested records until disposition is authorized pursuant to Title 44 of the United States Code and the relevant approved records retention schedule.