Service by parties of pleadings and other documents.
(a) Except as otherwise specifically provided by the rules in this part, all pleadings, documents, and papers of every kind (except requests for subpoenas, documents served by the Commission under § 502.113, and documents submitted at a hearing or prehearing conference) in proceedings before the Commission under the rules in this part shall, when tendered to the Commission or the presiding officer for filing, show that service has been made upon all parties to the proceeding and upon any other persons required by the rules in this part to be served. Such service shall be made by delivering one copy to each party; by hand delivering in person; by mail, properly addressed with postage prepaid; by courier; or by facsimile transmission if agreed by both parties prior to service.
(b) Service on all prior participants shall be shown when submitting comments or replies beyond the initial round, or when submitting post-decisional pleadings and replies such as petitions for reconsideration, or for stay under rule 261 or to reopen under rule 230 in all general notice proceedings, including those involving disposition of petitions for rulemaking (rule 51), petitions for declaratory order (rule 68), petitions general (rule 69), notices of proposed rulemaking (rule 52), proceedings under section 19 of the Merchant Marine Act, 1920, (46 U.S.C. 42101) ( part 550 ), and proceedings under section 13(b)(6) of the Shipping Act of 1984 (46 U.S.C. 41108(d)) ( part 560 ). A list of all participants may be obtained from the Secretary of the Commission.