Boonville Definitions ordinance (Appendix C, Section 15.2)

(1) ANSI A300 Pruning Standard. With the American National Standard for Pruning, ANSI A300, specifications can be written in a virtual infinite number of combinations. The following information is designed to help you understand exactly what will be accomplished in a pruning operation.

Branch Size—A minimum or maximum diameter size of branches to be removed should be specified in all pruning operations. This established how much pruning is to be done.

Pruning objectives—

• Hazard reduction pruning (HRP)—Is recommended when the primary objective is to reduce the danger to a specific target caused by visibly defined hazards in a tree. For example, HRP may be the primary objective if a tree has many dead limbs over a park bench.

• Maintenance pruning (MP)—Is recommended when the primary objective is to maintain or improve tree health and structure, and includes hazard reduction pruning. An example here might be able to perform an MP operation on a front yard tree.

Pruning types— Hazard reduction pruning and maintenance pruning should consist of one or more of the pruning types noted below:

• Crown cleaning—The selective removal of one or more of the following items: dead, dying or diseased branches, weak branches and waterspouts.

• Crown thinning—The selective removal of branches to increase light penetration, air movement and to reduce weight.

• Crown raising—The removal of the lower branches to provide clearance.

• Crown reduction or shaping—Decrease the height and/or spread of a tree. Consideration should be given to the ability of the species to sustain this type of pruning. • Vista pruning—The selective thinning of framework limbs or specific areas of the crown to allow a view of an object from predetermined spot.

• Crown restoration—Should improve the structure, form and appearance of trees which have been severely headed, vandalized or storm damaged.

2. Berm. A mound of earth or the act of pushing earth into a mound. Also used as a verb to describe the act of building a mound of earth for screening or a landscape buffer.

3. Buffer.

(a) A vegetation strip or management zone of varying size, shape, and character maintained along a stream, lake, road, recreation site, or different vegetative zone to mitigate the impacts of actions on adjacent lands; to enhance aesthetic values, or as a best management practice. Synonym: Buffer strip, buffer zone, roadside zone, roadside strip, waterfront zone. See "riparian zone".

(b) GIS—A zone of a specified distance around features

Note 1: Both constant and variable width buffers can be generated for a set of features based on each feature's attribute values; the resulting buffer zones form polygons that are areas either inside or outside the specified buffer distance from each feature.

Note 2: Buffers are useful for proximity analysis, e.g., to find all stream segments within 300 feet of a proposed logging area.

(c) An area maintained around an experimental or sample plot to ensure that the latter is not affected by any treatment applied to the area outside them both. Synonym: Isolation strip. (d) Wildlife management habitat that reduces dangers of having sharply contrasting edges of a harvest area next to protected habitat. (4) Canopy tree. Tree spacing such that the branches of the trees just touch the branches of neighboring trees. Trees with an irregular or umbrella canopy providing shade, screening or background. Allows some sunlight to the ground.

(5) Hedge. A row of closely planted shrubs or low-growing trees forming a fence or boundary.

(6) Landscape plan. The plans will display and designate:

(a) North point and scale;

(b) Topographic information and final grading adequate to identify and properly specify planting for areas needing slope protection; (c) The location, size and surface of materials of all structures and parking areas;

(d) The location, size and type of all above ground and underground utilities and structures within property notation, where appropriate, as to any safety hazards to avoid during landscape installation;

(e) Complete and accurate botanical and common names of each plant material, the number and location of trees or plants to be placed, the size at planting and areas to receive seed or sod;

(f) An estimated count and approximate location of all existing trees, six inches caliper or larger measured at four and one-half feet above ground level on sites that are proposed for removal and the location of planned requirements. In lieu of this count, the developer may use 40 trees per acre;

(g) Mature sizes of plant material shall be drawn to scale and called out on plan by common name or appropriate key;

(h) Location of hose connections and other water sources;

(j) Any proposed retaining walls, indicating location, size and material to be used in the construction of the wall;

(k) Regarding the landscaping plan, singlefamily dwellings need only supply a plan that supplies a count of the number of trees to be removed, six inches in diameter and larger measured at four and one-half feet above the ground, and meet the residential landscape design requirements under section 15.3.

(7) Natural border. A physical and biological area in nearly natural condition that exemplifies an ecological community and its associated vegetation and other soil, geologic and aquatic features. An area maintained in a natural condition by allowing physical and biological processes to operate, usually without direct human intervention, but treatments such as fire suppression or prescribed burning may be permitted.

(8) Natural forested area.

(a) An ecosystem characterized by a more or less dense and extensive tree cover, often consisting of stands varying characteristics such as species or composition, structure, age class, and associated processes, and commonly including meadows, streams, fish and wildlife.

(b) An area dominated by trees forming a closed canopy and interspersed with multiplayer shade tolerant sub-canopy trees, shrubs, vines, ferns and herbs. Trees attain a height of 60 to over 100 feet.

(9) Screening. A visual shield or conceal any abutting or nearby structure or use from another by fencing, walls, berms, or densely planted vegetation.

(10) Understory tree. All forest vegetation growing under the upper or upper-most canopy layer in a two storied forest.