In deciding whether to require the preparation of an EA or an EIS, the NEPA Compliance Coordinator will determine whether the proposal is one that:
    
    
        
        (a) 
         Normally does not require either an EA or an EIS;
     
    
        
        (b) 
         Normally requires an EIS; or
     
    
        
        (c) 
         Normally requires an EA, but not necessarily an EIS.