Section 17-311-26 - Service(a)General rule. Service of all documents and other papers filed in all proceedings, including but not limited to motions, petitions, applications, notices, briefs, and exhibits shall be by personal delivery or by first class mail, except as hereinafter provided.(b)On whom served. All documents and other papers shall be served by the person filing the same on every party in the proceeding and all such additional persons as the commissioner shall direct.(c)Service by the commissioner. A copy of any document or other paper served by the commissioner, showing the addresses to which the document or other paper was mailed, shall be placed in the commssioner's files and shall thereafter be prima facie evidence of the fact and date of such service.(d)Service of written notice. Written notice of all orders, decisions or authorizations issued by the commissioner shall be given to the party affected thereby or to such other person as the commissioner may deem appropriate by personal service upon such person or by first class mail. Conn. Agencies Regs. § 17-311-26