All signs shall be subject .to inspection by the Building Official. Footing inspections may be required by the Building Official for all signs having footings. All signs containing electrical wiring shall be subject to the provisions of the Electrical Code, and the electrical components used shall bear the label of an approved testing agency. The Building Official may order the removal of any sign that is not maintained in accordance with the provisions of Section 156.09. All signs may be reinspected at the discretion of the Building Official.