105.35—Serving documents in PHMSA proceedings.
        
        (a) Service by PHMSA.
         We may serve the document by one of the following methods, except where a different method of service is specifically required:
    
    
    
    
        
        (ii) 
         An official United States Postal Service receipt from the registered or certified mailing is proof of service.
    
    
        
        (iii) 
         We may serve a person's authorized representative or agent by registered or certified mail, or in any other manner authorized by law. Service on a person's authorized agent is the same as service on the person.
    
    
    
    
        
        (b) Service by others.
         If you are required under this subchapter to serve a person with a document, serve the document by one of the following methods, except where a different method of service is specifically required:
    
    
    
    
        
        (ii) 
         An official United States Postal Service receipt from the registered or certified mailing is proof of service.
    
    
        
        (iii) 
         You may serve a person's authorized representative or agent by registered or certified mail or in any other manner authorized by law. Service on a person's authorized agent is the same as service on the person.
    
    
    
    
        
        (i) 
         In a proceeding under  § 107.317 of this subchapter (an administrative law judge proceeding), you may electronically serve documents on us.
    
    
    [67 FR 42951, June 25, 2002, as amended at 72 FR 55682, Oct. 1, 2007]