A denial of a request for records, either in whole or in part, a request for expedited processing, or a request for fee waivers, may be appealed in writing to the Chairman of the Commission within 20 working days of the date of the letter denying an initial request. The Chairman shall act on the appeal under 5 U.S.C. 552(a)(6)(A)(ii) within 20 working days after the receipt of the appeal. If the Chairman wholly or partially upholds the denial of the request, the Chairman shall notify the requesting person that the requester may obtain judicial review of the Chairman's action under 5 U.S.C. 552(a)(4)(B)-(G).