Any public utility use or structure which was legally established or constructed but which is not in compliance with the provisions of this title, or any subsequent amendments thereto, including equipment or other facilities necessary for operating purposes, but excluding offices, service centers or yards, may be added to, extended or altered; provided, there is no change in use or enlargement of the original site established prior to the time such approval was required.
(Prior code § 9405; Ord. 86 § 3, 1993; Ord. 93 § 63, 1993)