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7. Tree Replacement Calculations. Thirty (30) percent of the total diameter inches of <br />significant trees on the site may be removed without replacement. The allowable thirty <br />(30) percent removal is first credited to the common trees removed, then the conifers, and <br />Lastly the hardwood species. The following calculation procedure must be used to <br />determine tree replacement requirements: <br />a. Tally the total number of diameter inches of significant trees on the site. <br />b. Calculate thirty (30) percent of the total diameter inches of significant trees on the <br />site. This is the allowable tree removal limit, or the number of inches that can be <br />removed without replacement. <br />c. Tally the total diameter inches of common trees that will be removed and subtract this <br />number from the allowable tree removal limit. <br />d. If there are any allowable inches left, tally the total diameter inches of <br />conifer/evergreen tree species that will be removed and subtract this number from the <br />remaining allowable inches. <br />e. If there are any allowable inches left, tally the total diameter inches of hardwood <br />deciduous tree species that will be removed and subtract this number from the <br />remaining allowable inches. <br />f. If at any point in the above calculation procedure (a-e) the number of inches to be <br />removed exceeds the thirty (30) percent allowable removal limit, the remaining inches <br />of removal above the allowable limit must be replaced according to the Tree <br />Replacement Schedule in subsection 8. <br />8. Tree Replacement Schedule. Tree removals over the allowable tree removal limit on the <br />parcel shall be replaced according to the following schedule: <br />a. Common tree species shall be replaced with new trees at a rate of one-fourth (1/4) the <br />diameter inches removed. <br />b. Coniferous/evergreen tree species shall be replaced with new coniferous or evergreen <br />trees at a rate of one-half ('/z) the diameter inches removed. Since coniferous species <br />are often sold by height rather than diameter inch, the following conversion formula <br />can be used: <br />Height of Replacement Coniferous Tree/2= Diameter Inches of Credit. <br />Hardwood deciduous tree species shall be replaced with new hardwood deciduous trees <br />at a rate of one-half 0/2) the diameter inches removed. <br />d. Replacement Tree Size. Replacement trees must be a minimum of one (1) inch in <br />diameter. <br />9. Species Requirement. The City must approve all species used for tree replacement. <br />Ornamental trees are not acceptable for use as replacement trees. Where ten or more <br />replacement trees are required, not more than thirty (30) percent of the replacement <br />trees shall be of the same species of tree. Native species are encouraged, and hardiness <br />and salt tolerance should be considered where applicable. <br />10. Warranty Requirement. Any replacement tree which is not alive or healthy, as determined <br />by the City, or which subsequently dies due to construction activity within two (2) years <br />after the date of project closure shall be removed by the applicant and replaced with a <br />new healthy tree meeting the same minimum size requirements within eight (8) months of <br />removal. <br />11. Protective Measures. The Tree Preservation Plan shall identify and require the following <br />measures to be utilized to protect significant trees planned for preservation: <br />