5.13—Processing of petitions.
        
        (a) General.
         Each petition received under  § 5.11 of this part is referred to the head of the office responsible for the subject matter of that petition. No public hearing, argument, or other proceeding is held directly on a petition before its disposition under this section.
    
    
        
        (b) Grants.
         If the Secretary determines that the petition contains adequate justification, he initiates rulemaking action under subpart C of this part or grants the exemption, as the case may be.
    
    
        
        (c) Denials.
         If the Secretary determines that the petition does not justify initiating rule-making action or granting the exemption, he denies the petition.
    
    
        
        (d) Notification.
         Whenever the Secretary determines that a petition should be granted or denied, the office concerned and the Office of the General Counsel prepare a notice of that grant or denial for issuance to the petitioner, and the Secretary issues it to the petitioner.