The director may trim or remove any parkway tree or plant, including any part thereof, regardless of the location, if in his or her opinion, removal is necessary to eliminate any hazard or risk to public safety or property. Conditions permitting removal by the director include, but are not limited to, the following:
(1) Where the tree, foliage or any limb, or the shrub or plant, is interfering with a primary structure, and there is no feasible alternative to mitigate the interference;
(2) Where a written determination has been made, after a visual inspection and evaluation, that the tree is so diseased or damaged that it is no longer viable or it is a threat to property or to other trees;
(3) Where the tree is so poorly formed due to stunted growth that its preservation would not result in any substantial benefit to the community;
(4) Where the tree interferes with utility services, or any street or highway, and no reasonable alternative exists other than removal or trimming of the tree;
(5) Where the tree is a potential safety hazard due to the risk of it falling and its structural instability cannot be remedied, or where any other risk to persons or property is presented;
(6) Where the tree is causing damage to improvements including, but not limited to, any building foundation, retaining wall, roadway/driveway, patio, and deck, or is interfering with the use and enjoyment of the property;
(7) Where the tree is host to an organism which is parasitic to another species of tree thereby endangered by the parasite; or
(8) Where the tree belongs to a species which is known to be pyrophitic or highly flammable and has been identified as a public safety hazard.
(Ord. 556 § 2 (part), 2000).