When this chapter requires the provision of notice or service, the notice or service shall be in writing. If a right may be exercised or an act is to be done and the notice or service of it is required to be given but the time within which the notice or service must be given is not specified, the notice or service shall be given at least ten days before the time the right must be exercised. The notice or service shall be served upon the owner and/or possessor personally or by United States mail, first-class postage prepaid, and if by such mail, it shall be sent to the animal owner at his/her last known mailing address. In the event that the last known address of the animal owner and/or possessor cannot be ascertained, the hearing officer or animal control officer shall sign a declaration under penalty of perjury that best efforts were made to provide notice or service to the animal owner and/or possessor. In the case of personal service, service shall be deemed complete at the time of such delivery. In the case of service by first-class mail, service shall be deemed complete at the time of deposit into the United States mail. The failure to receive a notice or other document sent via first-class mail shall not affect the validity of any enforcement proceedings under this title. (Ord. 2349 NCS §1 (part), 2009; Ord. 2185 NCS §2 (part), 2004.)