If, in the opinion of the Zoning Official, a sign is dilapidated, abandoned, structurally unsafe or not in compliance with the provisions of this article, the Zoning Official shall give written notice by certified mail to the owner or tenant that the sign be returned to good repair, made safe, made to comply or be removed within 20 calendar days of such notice. Noncompliance by the owner or tenant upon whom the notice is served may cause the Zoning Official to order the removal of the sign or signs by the Township, all costs of which shall be charged to the owner or tenant upon whom the notice is served, and shall become a lien upon the land in accordance with the procedures established by law.