Permits shall be issued for a specified time period, not to exceed 5 years. A permit may be issued for a period less than a year or may be stated to  expire on a certain date.  The user shall apply for permit re-issuance a minimum of 90 days prior to the expiration of the user's existing permit. 
(1974 Code, § 54.40)  (Ord. 29-84, passed 9-4-1984; Am. Ord. 26-87, passed 7-6-1987; Am. Ord. 9-91, passed 3-4-1991)  Penalty,  see § 54.99