All nonconforming signs of all types not exempted by the definition thereof and all nonconforming open land uses (not under a roof) such as open storage yards, junk yards accumulations of debris, stockyards and the like, shall be removed and made to conform to the adoption of this chapter within a period of two years after the adoption of this chapter and the mailing of a notice instructing such removal by the Zoning Officer.
(2009 Code, § 905.06)