Violation notice and sign removal. The Code Enforcement Office shall cause a notice of such violation to be served on the owner of the building, structure or lot where said sign is located or the lessee or tenant of the part of or the entire building, structure or lot where said sign is located, requiring the owner or lessee or tenant to remove the illegal sign immediately. The notice may be served personally or by certified mail, return receipt requested. Upon failure of said owner or lessee or tenant to remove the sign within 24 hours after notice is provided, the Code Enforcement Office shall be authorized to enter upon said property and remove therefrom any said illegal sign at costs to the owner, lessee or tenant. No liability shall attach to the Town or any officers, employees or agents of the Town, except for acts of affirmative negligence in connection with the removal of any such illegal sign. In any circumstance where the Code Enforcement Officer determines that an illegal sign is an immediate danger to public health and safety, he or she may remove the sign immediately, without notice.