All nonconforming signs, of all types and not exempted by the definition thereof, and all nonconforming open land uses such as storage yards, junk yards, parking lots open to public use and the like shall be removed and made to conform to the provisions of this chapter within a period of two years after the adoption of this chapter and the mailing of a notice instructing the removal by the Zoning Officer.
(1986 Code, § 28.10.010)