5 CFR §2417.204

1. (a)Requests or demands for official records, information, or testimony under this part must be served on the Office of the Solicitor at the following address: Office of the Solicitor, Federal Labor Relations Authority, 1400 K Street NW, Suite 300, Washington, DC 20424-0001; telephone: (771) 444-5775; fax: (202) 343-1007; or email: solmail@flra.gov. The request or demand must be sent by mail, fax, or email and clearly marked “Part 2417 Request for Testimony or Official Records in Legal Proceedings.”
2. (b)A person requesting public FLRA information and non-public FLRA information under this part may submit a combined request for both to the Office of the Solicitor. If a requester decides to submit a combined request under this section, the FLRA will process the combined request under this part and not under part 2411 (the FLRA's Freedom of Information Act regulations).