All existing shopping centers which may, in the future, be classified in the neighborhood-commercial (C-N) zone shall, within the time established herein, be made to conform to the requirements and regulations of the zone as applicable. The Planning Department shall submit a letter to the property owner and managers of the businesses being conducted within said shopping center, outlining the requirements and changes necessary to bring the center into conformance with the zone requirements. All of said changes shall be accomplished within one year of the date of such notification. (Ord. 3153 § 2 (Exh. A), 2010; Ord. 1356 § 1, 1971; Ord. 1212 § 1, 1969; prior code § 33.508(I)).