263.28—Interlocutory review.
               		
               	 	
               	 	
               	 	               	 	               	 	               	 	               	 	
               	 	
    
        
        (a) General rule.
         The Board may review a ruling of the administrative law judge prior to the certification of the record to the Board only in accordance with the procedures set forth in this section and  § 263.23.
     
    
        
        (b) Scope of review.
         The Board may exercise interlocutory review of a ruling of the administrative law judge if the Board finds that:
     
    
        
        (1) 
         The ruling involves a controlling question of law or policy as to which substantial grounds exist for a difference of opinion;
     
    
        
        (2) 
         Immediate review of the ruling may materially advance the ultimate termination of the proceeding;
     
    
        
        (3) 
         Subsequent modification of the ruling at the conclusion of the proceeding would be an inadequate remedy; or
     
    
        
        (4) 
         Subsequent modification of the ruling would cause unusual delay or expense.
     
    
        
        (c) Procedure.
         Any request for interlocutory review shall be filed by a party with the administrative law judge within ten days of his or her ruling and shall otherwise comply with  § 263.23. Any party may file a response to a request for interlocutory review in accordance with  § 263.23(d). Upon the expiration of the time for filing all responses, the administrative law judge shall refer the matter to the Board for final disposition.
     
    
        
        (d) Suspension of proceeding.
         Neither a request for interlocutory review nor any disposition of such a request by the Board under this section suspends or stays the proceeding unless otherwise ordered by the administrative law judge or the Board.