211.25—Hearings.
        
        (a) 
         A hearing will be held if required by statute or the Administrator finds it necessary or desirable.
    
    
    
    
        
        (2) 
         Any rule issued in a proceeding in which a hearing is held is not based exclusively on the record of the hearing; and
    
    
        
        (3) 
         Hearings are conducted in accordance with  section 553 of title 5, U.S.C.;  section 556 and 557 of title 5 do not apply to hearings held under this part.
    
    
        
        (c) 
         The Administrator conducts or designates a representative to conduct any hearing held under this part. The Chief Counsel serves or designates a member of his staff to serve as legal officer at the hearing.