(a) A requester must appeal to the head of OMB in writing within 90 calendar days after the date of such adverse determination addressed to the FOIA Officer at the address specified in §1303.20. The appeal must include a statement explaining the basis for the appeal. Determinations of appeals will be set forth in writing and signed by the Deputy Director, or his designee, within 20 working days. If on appeal the denial is upheld in whole or in part, the written determination will also contain a notification of the provisions for judicial review, the names of the persons who participated in the determination, and notice of the services offered by the OGIS as a non-exclusive alternative to litigation.

(b) OGIS's dispute resolution services is a voluntary process. If OMB agrees to participate in the mediation services provided by OGIS, OMB will actively engage as a partner to the process in an attempt to resolve the dispute. An appeal ordinarily will not be adjudicated if the request becomes a matter of FOIA litigation. Before seeking review by a court of an agency's adverse determination, a requester generally must first submit a timely administrative appeal.