12 C.F.R. § 404.8
(e) Adverse determination. EXIM will notify the requester in writing if it makes an adverse determination denying a request in any respect. Adverse determination or denials of request may include decisions that: the requested records are exempt in whole or in part; the request does not reasonably describe the records sought; the information requested is not a record subject to the FOIA; the requested records do not exist, cannot be located or have been destroyed; or the requested record is not readily reproducible in the form or format sought by the requester. Adverse determinations also include denials involving fees or fee waiver matters or denials of requests for expedited processing. Whenever EXIM makes an adverse determination, the denial notice will be signed by the Chief FOIA Officer or other appropriate executive or designee and include:
(g) Use of record exclusions.