Any lawfully existing sign which does not conform to Section 608.3 of this Code shall be removed or altered to conform therewith within the period of time specified below after the effective date of this Article 6 or such later date as the sign becomes nonconforming:
In Civic Center Special Sign Districts Numbers 1 and 2, one year for painted wall signs;
In Civic Center Special Sign District No. 1, one year for general advertising signs;
In Civic Center Special Sign District No. 2, five years for general advertising signs other than painted wall signs.
Provided, however, that within these Special Sign Districts, except as stated otherwise in Section 609.10 of this Code, a lawfully existing sign which does not conform to Section 608.3 need not be removed or altered to conform therewith prior to the end of its normal life if located on the north side of Market Street and within 60 feet of the north line of Market Street and primarily viewed from Market Street, or if located on the north line of Hayes Street (between Market Street and a point 100 feet east of the east line of Van Ness Avenue) and within 60 feet of the north line of Hayes Street and primarily viewed from Hayes Street.
(Amended by Ord. 125-70, App. 4/17/70)