I hereby certify that I have this day served the 
      foregoing [name of document] on the following persons at the following 
      addresses and facsimile numbers (if also served by facsimile) by [specify 
      method of service]:  
      [list persons, addresses, facsimile numbers] 
      Dated this ___ day of ___, 19__. 
      [signature], for [party]
 
      (b) Method of service. Except as 
      otherwise agreed by the parties and the hearing officer, the method of 
      service is the same as set forth in §16.13(b) for filing documents. 
      
      (c) Where service shall be made. 
      Service shall be made to the persons identified in accordance with 
      §16.13(f). If no such person has been designated, service shall be made on 
      the party. 
      (d) Presumption of service. There 
      shall be a presumption of lawful service -- 
      (1) When acknowledgment of receipt is by 
      a person who customarily or in the ordinary course of business receives 
      mail at the address of the party or of the person designated under 
      §16.13(f); or 
      (2) When a properly addressed envelope, 
      sent to the most current address submitted under §16.13(f), has been 
      returned as undeliverable, unclaimed, or refused. 
      (e) Date of service. The date of 
      service shall be determined in the same manner as the filing date under 
      §16.13(b).