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Definitions <br /> <br />Clearing - Any intentional or negligent act to cut down, remove all or a substantial part of, <br />or damage a significant tree or woodland that will cause the tree or woodland to decline <br />and/or die. <br /> <br />Construction area - Any area in which movement of earth, alteration in topography, soil <br />compaction, disruption of vegetation, change in soil chemistry, or any other change in the <br />natural character of the land occurs as a result of the site preparation, grading, building <br />construction or any other construction activity. <br /> <br />Critical root zone (CRZ) - A circular region measured outward from the tree with a radial <br />distance of one foot for every one inch of tree diameter. For specimen trees, the formula <br />changes to 1.5 feet for every one inch of tree diameter. <br /> <br />Crown - the above ground parts of a tree consisting of the branches, stems, buds, fruits, and <br />leaves. May also be referred to as 'canopy". <br /> <br />Diameter - The diameter of a tree measured at 54 inches above the ground. If the tree splits <br />~iple trunks below 54 inches, the trunk is measured at the closest point beneath the <br />split. <br /> <br />Drip line - A vertical line extending from the outermost edge of the tree canopy to the <br />ground. <br /> <br />Forest management plan - A plan meeting the requirements of this ordinance and <br />establishing best conservation and management practices for a landowner. <br /> <br />Forest stand - A contiguous group of trees sufficiently uniform in species composition, <br />arrangement of age classes, and condition to be a distinguishable, homogeneous unit. <br /> <br />Land alteration - The excavation, grading clearing, filling or other topographic change to <br />land that will result in: <br /> <br />1. The movement of more than 350 cubic yards of earth where significant trees are <br /> present; or <br />2. Any alteration of land of more than one foot from the natural contour of the <br /> ground on any contiguous 450 square feet of ground where significant trees are <br /> present; or <br />3. Any cutting or killing of more than 20% of the significant trees on any land <br /> within a period of 5 years. <br />4. Any destruction or disruption of tree cover equal to or greater than 25% of the <br /> total tree cover on any land within a period of 5 years. <br />5. Any other significant change in the natural character or topography of the land. <br /> <br /> <br />