A heritage tree is one having historical significance or being part of a historical site or a rare or unusual species. Private property owners shall recommend or nominate Heritage Trees on a voluntary basis. The Tree Advisory Board then has the duty of approving nominations and inventorying approved Heritage Trees. In no case shall the City nominate and inventory a Heritage Tree on private property without voluntary consent of the owner of the tree. Heritage Trees are to be protected. Removal or damage to such trees is prohibited without authorization by the Tree Advisory Board. Lindon City does not assume responsibility for the maintenance of Heritage Trees on private property.