§ 19.2. Definitions.

In construing the provisions hereof and the meaning of each and every word, term, phrase, or part thereof, where the context will permit, the definitions of words as contained in the adopted Zoning Ordinance of Troup County, supplemented by the following, shall apply:

Agriculture. The science or art of cultivating the soil, harvesting crops, and raising livestock.

Boundary Tree. A tree located on adjacent property in proximity to a boundary line of subject project. Requirements set forth herein covering critical root zone shall be adhered to.

Buffer. See Article III of this ordinance.

Caliper. A standard of trunk measurement for replacement trees. Caliper inches are measured at the height of six inches above the ground for trees up to and including four-inch caliper and 12 inches above the ground for trees larger than four inches caliper.

Certified County Arborist ("Arborist"). An ISA certified tree professional responsible for reviewing tree preservation and replacement plans, etc., to include developing arboricultural standards relative to tree care, protection, construction impacts and administrative guidelines for ordinance as well as the determination of tree removal in public places.

Critical Root Zone. The minimum area beneath a tree which must be left undisturbed in order to preserve a sufficient root mass to give a tree a reasonable chance of survival. The critical root zone of a tree is established on the basis of the trunk diameter at DBH. Trees are to be represented on plans by a concentric circle centered on the trunk location with a diameter equal in feet to twice the number of inches of the tree's trunk diameter at DBH. The critical root zone shall be used by plan reviewers to determine compliance with design standards and construction specifications. A circle is graphically efficient to produce and represents the most likely configuration of a trees root pattern, even when the crown is skewed or one-sided. The ratio of circle diameter to trunk diameter is based on typical dripline distances noted on open grown trees with full crowns.

Density Factor. A unit of measure used to prescribe the calculated tree coverage on a site.

Diameter Breast-Height (DBH). The standard measure of size for overstory and understory trees existing on a site. The tree trunk is measured at a height of four and one-half feet above the ground. If a tree splits into multiple trunks below four and one-half feet, measure the trunk at its most narrow point beneath the split.

Drip Line: The line enclosing the area directly beneath the tree's crown from which rainfall would drip from the outermost branch tips of the tree or group of trees collectively.

Heritage Tree. Any tree which is determined by Troup County to be of unique and intrinsic value to the general public because of its size, age, historic association, unique species to the region, ecological value or any tree designated a Georgia State Champion, United States Champion or World Champion by the American Forestry Association (Refer to appendix B). This ordinance calls for the arborist to maintain a list of trees that are of special interest to the county. Upon recommendation by the arborist, the board of commissioners may designate a tree as a heritage tree, provided the tree's health, aerial space, and open ground area for the root system have been certified by the Arborist as sufficient. The arborist shall maintain a registry of heritage trees which shall be maintained in the building permits and inspections office.

Land Disturbance Permit. The authorization granted by Troup County necessary to begin a land disturbing activity.

Land Disturbing Activity. Any alteration of the natural environment that shall require a land disturbance permit for removal of trees incidental to the development of land or to the marketing of land for development and includes, but it is not limited to, soil erosion permit, clearing and grubbing permit, land disturbance permit or building permit.

Overstory (Canopy) Tree. Those tree species that compose the top layer or canopy of vegetation and will generally reach a mature height of greater than 40 feet. Replacement trees must be chosen from the list in appendix D.

Pasture Land. Land cleared of trees for agricultural use.

Replacement Planting. The planting of trees on a site that before development had more trees, and after development shall have fewer trees per acre.

Site. Any plot or parcel of land, or a combination of contiguous lots or parcels of land, where grading, building, construction or alteration is performed or permitted.

Site Density Factor. The minimum number of tree density units per acre which must be achieved on a property at completion of development. Reference appendix C.

Soil Compaction. A change in the physical properties of soil which include an increase in soil weight per unit volume, and decreases in soil pore space. Soil compaction is caused by repeated vibrations, frequent traffic and weight. As related to tree roots, compacted soil can cause physical root damage, a decrease in soil oxygen levels with an increase in toxic gases, and can create an impervious condition to new root development.

Specimen Tree. Any tree that qualifies for special consideration for preservation due to its size, type, and condition (Refer to appendix A). Individual trees may be considered important county resources because of unique or noteworthy characteristics or values.

Stop Work Order. An official order from the county for work to cease on a development site until such time as specific issues are resolved.

Timber Harvest. Under Georgia law all timber harvests or sales must be reported on Department of Revenue form PT-283T. The official code of Georgia Annotated defines timber harvest.

Tree. Any self-supporting woody perennial plant, usually having a main stem or trunk and many branches, and at maturity normally attaining a trunk diameter greater than three inches at any point and a height of over ten feet.

Tree Diameter. The widest cross-sectional dimension of a tree trunk measured at diameter breast height (DBH) or at a point below DBH for new trees or multi-trunk species, but in no case less than six inches from the ground.

Tree Preservation and Replacement Plan. A plan that identifies tree protection areas where existing trees are to be preserved and where proposed replacement trees are to be planted on a property to meet the requirements of this ordinance, as well as methods of tree protection to be undertaken on the site and other pertinent information.

Tree Planting List. The recommended species of trees listed in appendix D.

Tree Protection Area. Any portion of a site wherein existing trees that are proposed to be preserved in order to comply with the requirements of this ordinance. The tree protection area shall include, at a minimum, no less than the total area beneath the tree canopy as defined by the critical root zone.

Tree Save Area. An area designated for the purpose of meeting tree density requirements, saving existing trees, and/or preserving natural buffers.

Understory Tree. A tree species that, under normal forest conditions, grows to maturity beneath overstory trees and will generally reach a mature height of at least ten feet but less than 40 feet. Replacement trees must be chosen from the list in appendix D.

Zoning Ordinance. The Zoning Ordinance of Troup County, Georgia, as amended from time-to-time by the Board of Commissioners of Troup County.