Section 12.08
Any sign which lawfully existed and was maintained at the time the Zoning Ordinance became effective, and which is subject to the regulation of this Ordinance, as amended, shall be deemed a legal, non-conforming sign.
Non-conforming signs may remain provided they are not expanded, enlarged, or substantially altered other than routine maintenance and upkeep of the sign itself It is intended that nonconforming signs be eventually removed or replaced by a conforming sign through natural attrition.
All nonconforming signs that are obsolete due to discontinuance of the business or activity advertised thereon shall be removed within thirty (30) days of the close of said business activity.