[Code of Federal Regulations] [Title 49, Volume 3] [Revised as of October1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR190.5] [Page 8] TITLE 49--TRANSPORTATION CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PART 190 --PIPELINE SAFETY PROGRAMS AND RULEMAKING PROCEDURES--Table of Contents Subpart A--General Sec. 190.5 Service. (a) Each order, notice, or other document required to be served under this part shall be served personally or by registered or certified mail. (b) Service upon a person's duly authorized representative or agent constitutes service upon that person. (c) Service by registered or certified mail is complete upon mailing. An official U. S. Postal Service receipt from the registered or certified mailing constitutes prima facie evidence of service.