None, except that no building shall exceed three and one-half stories or 45 feet in height when located adjacent to any C-O or residential zone. (Ord. 3182 § 3(A), 2011; Ord. 3153 § 2 (Exh. A), 2010; Ord. 1356 § 1, 1971; Ord. 1212 § 1, 1969; prior code § 33.509(E)).