For the purposes of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
AGGREGATE DIAMETER. The combined diameter of a multiple trunk tree measured at breast height (See diameter breast height).
BUILDING ACTIVITY AREA. The area of a lot in which construction and building activities are to be limited and hence shall be the smallest possible area of a lot or parcel of land within which building activity may take place, including the entire area affected by building and grading activities related to the proposed construction, to be determined with maximum regard for existing trees.
CALIPER. The diameter of a tree trunk six inches above the existing grade or proposed planted grade. This measurement is used for nursery-grown trees.
CRITICAL ROOT ZONE. The area inscribed by an imaginary line on the ground beneath a tree having its center point at the center of the trunk of the tree and having a radius equal to one foot for every inch of diameter breast height.
DIAMETER BREAST HEIGHT (DBH). The diameter of a tree measured at four and one-half feet above the existing grade at the base of the tree. This measurement is used for existing forest trees.
NO BUILD ZONE (NBZ). See definition in § 153.002.
NO DISTURB ZONE (NDZ). An area designated on a subdivision plat which shall remain free of any structures including, but not limited to, drives, walks, buildings and outbuildings, sheds, fences, swimming pools, decks, swing sets/play structures, satellite dish antennae, basketball courts, etc. The existing natural features shall not be disturbed, removed, or physically altered unless written permission is granted by the Planning Director or designee. Grading activities and placement of utilities within said
zones are not permitted unless written permission is granted by both the Planning Director and the City Engineer or designees. Utilities may cross at right angles to the said zones or run outside and parallel it.
PROTECTED TREE. A protected tree is any tree having a diameter of six inches DBH or larger or having an aggregate diameter of 15 inches DBH or larger or a tree which has been designated by the city to be of high value or interest to the city because of its location or historic association, or other professional criteria.
REMOVE or REMOVAL. The causing or accomplishing of the actual physical removal of a tree, or the effective removal through damaging, poisoning, or other direct or indirect action resulting in, or likely to result in, the death of a tree.
TREE. Any self-supporting woody plant together with its root system, growing upon the earth usually with one trunk, or multi-stemmed trunk system, supporting a definitely formed crown.
TREE PRESERVATION AREA. The area of a parcel of land in which all trees shall be protected during all phases of construction.
TREE PRESERVATION PLAN. A proposal which includes a tree survey and a written plan with text and/or graphic illustrations indicating the methods which are to be used to preserve existing trees during construction, and methods for ongoing maintenance, including fertilizing and pruning.
TREE PRESERVATION ZONE. An area designated on a subdivision plat with restrictions noted regarding the removal of trees.
TREE REMOVAL PERMIT. The permit required by this section to be issued in order to remove any protected tree within the corporate limits of the city.
TREE SURVEY. A graphic display drawn to scale, not to exceed 1" = 50', showing all existing trees on a site with a six-inch DBH or greater. The tree survey shall include species, conditions, and contain the outline of the critical root zone of each such tree.
(Ord. 95-96, passed 10-5-98; Am. Ord. 28-05, passed 6-20-05)