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ORDINANCE NO, 2002- 030 AN ORDINANCE OF INDIAN RIVER COUNTY, FLORIDA, REGARDING TREE PROTECTION AND LAND CLEARING REQUIREMENTS; AMENDING LAND DEVELOPMENT REGULATIONS (LDRs) CHAPTER 901, DEFINITIONS; AND CHAPTER 927, TREE PROTECTION AND LAND CLEARING; AND PROVIDING FOR REPEAL OF CONFLICTING PROVISIONS, CODIFICATION, SEVERABILITY AND EFFECTIVE DATE. BE IT ORDAINED BY THE BOARD OF COUNTY COMMISSIONERS OF INDIAN RIVER COUNTY, FLORIDA THAT THE INDIAN RIVER COUNTY LAND DEVELOPMENT REGULATIONS (LDRS) BE AMENDED AS FOLLOWS: 1. Chapter 901 Definitions Portions of Zoning Chapter 901 subsection 901.03 are hereby amended as follows: Critical Root Zone (CRZ) an area around a tree that is regulated by the Indian River County Land Development Regulations for the purpose of protecting the roots and trunk of a protected tree or a specimen tree, both during and after construction. It is a circular area using a radius measured from the center of the tree. The radius is calculated as one 1 foot of radius for each one 1 inch of diameter at breast height (4.5 feet abovergrade). For any fraction of a foot over a whole foot, the diameter at breast height will be rounded up to the next whole number. Example: a tree has a diameter at breast height of 211/4 inches; the CRZ is a circle centered on the center of the tree, with a radius of 22 feet. Diameter at breast height (dbh) the standard measure of a single -stemmed tree at four and one- half (4.5) feet above grade. When a tree has grown with cluster stems at breast height, dbh shall be equal to the sum of the diameters of the individual stems measured at four and one-half (4 1/2) feet above grade. The dbh shall be measured bytaking the circumference of the stem(s)/trunk(s) and applying the formula d = c/nwhere d is the diameter (in inches) c is the circumference (in inches), and n = 3.14. As an example: a single trunk tree has a circumference of 4 feet 5 inches (53 inches) measured 4.5 feet above the ground The dbh of the tree is then calculated as d = 53/3.14 = 16.9 inches. The dbh value shall be expressed in inches and shall be scientifically rounded to one decimal place. Tree, protected any tree having a dbh of four (4) inches or more, but less than 24 inches all „ This shall also include and all each tree, regardless of the dbh of the individual tree, within a significant groupings of trees of West Indian or tropical origin_ of any size, and all faangf eves ardiess of size3 w^lud : ,however-, The following trees, regardless of size or location shall not be considered to be protected trees: Casuarina cunninghamiana -Australian pine Casuarina lepidophlia - Australian pine Enterolobium cyclocarpum — Australian P e Earpod Melia azedarch - Chinaberry Schinus terebinthifolius - Brazilian pepper tree Melaleuca quinquenervia - Melaleuca, punk or paper tree 64 Coding: Words in strikethFough are deletions from existing law. Words underlined are additions.