5 CFR § 1820.16
Service of requests or demands
November 4, 2020
Requests or demands for official records or information or testimony under this subpart must be served by mail or hand delivery to the Office of General Counsel, U.S. Office of Special Counsel, 1730 M St. NW., Suite 213, Washington, DC 20036; or sent by fax to 202-254-3711.