16.213—Discovery.
        
        (a) 
         Discovery is limited to requests for admissions, requests for production of documents, interrogatories, and depositions as authorized by  § 16.215.
    
    
        
        (b) 
         The hearing officer shall limit the frequency and extent of discovery permitted by this section if a party shows that—
    
    
    
        
        (2) 
         The information requested may be obtained from another less burdensome and more convenient source;
    
    
        
        (3) 
         The party requesting the information has had ample opportunity to obtain the information through other discovery methods permitted under this section; or