Before leasing property in a park area under this part, the Director must determine that:
    
    
        
        (a) 
         The lease will not result in degradation of the purposes and values of the park area;
     
    
        
        (b) 
         The lease will not deprive the park area of property necessary for appropriate park protection, interpretation, visitor enjoyment, or administration of the park area;
     
    
        
        (c) 
         The lease contains such terms and conditions as will assure the leased property will be used for activity and in a manner that are consistent with the purposes established by law for the park area in which the property is located;
     
    
        
        (d) 
         The lease is compatible with the programs of the National Park Service;
     
    
        
        (e) 
         The lease is for rent at least equal to the fair market value rent of the leased property as described in  § 18.5 ;
     
    
        
        (f) 
         The proposed activities under the lease are not subject to authorization through a concession contract, commercial use authorization or similar instrument; and
     
    
        
        (g) 
         If the lease is to include historic property, the lease will adequately insure the preservation of the historic property.