Immediately upon the adoption of the resolution required by Section 10.2, the clerk of council shall cause written notice to be given to the owner, person in possession or person having a recorded interest in every piece of land sought to be appropriated, or to his or her authorized agent; and the notice shall be served by a person designated for the purpose and return made in the manner provided by law for the service and return of summonses in civil actions. If the owner, person or agent cannot be found, notice shall be given in accordance with the notice provisions adopted under Section 2.11, and council may then pass an ordinance, by a two-thirds vote of all members of council, directing the appropriation to proceed.