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f <br /> 9-1505-3 <br /> ment Plan application processed by Staff Review proce- security to ensure maintenance of said trees for an ensu- <br /> dure.Replacement of any tree removed under this subsec- ing three (3)year maintenance period. <br /> tion shall be as specified in Section 9-1505.4. (Ord. 3675; Ord. 3843 § 19 <br /> (Ord. 3675; 3697; Ord. 3843 § 19 (part), 1995) (P ) 1995) <br /> 9-15055 DEVELOPMENT CONSTRAINTS. <br /> 9-1505.4 REPLACEMENT. To protect and preserve Heritage Oak Trees,Historical <br /> Trees removed under the provisions of this Chapter Trees, and Native Oak Trees from development and <br /> shall be replaced subject to the following requirements: construction activity, the following standards shall be <br /> (a) Replacement Stock.Replacement stock shall be applicable unless otherwise specified: <br /> of healthy commercial nursery stock or acorns, of the (a) Grade Changes. Grade changes near or within <br /> species removed or other approved species,and shall be the dripline of said trees shall comply with the following <br /> established and maintained for at least three (3) years. restrictions: <br /> (b) Location-Replacement trees shall be planted as (1) No grade changes shall occur within six(6) <br /> near as possible to the location of the removed tree or in feet of the trunk of the tree_ <br /> an alternative location acceptable to the Review Authori- (2) No grade changes shall occur that entail <br /> ty removing or adding more than six (6) inches of soil in <br /> (c) Timing. Replacement stock shall be planted the protected zone of the tree. <br /> between October 1 and December 31,and no later than (3) Extensive cuts or fills that are necessary <br /> twelve (12) months after the date of tree removal. beyond the protected zone shall have adequate drainage <br /> (d) Number and Maintenance of Replacement to mitigate adverse effects caused by changes in grade <br /> Trees.The number and maintenance of replacement stock elevation. <br /> shall be as follows: (4) Any grade changes within the protected <br /> (1) Each Heritage Oak Tree or Historical Tree zone of the nee shall be accomplished so as to prevent <br /> that has been removed under the provisions of Section 9- soil compaction and injury to or removal of the tree's <br /> 1505.3(a)shall be replaced with five(5)trees or acorns, roots. <br /> or combination thereof. (b) Fencing. Before <br /> cmg. grading operations may com- <br /> (2) Each Native Oak Tawe that has been re- mence,a minimum five(5)foot high chain Iink fence or <br /> moved under the provisions of Section 9-15053(b)shall other comparable protective fencing shall be installed at <br /> be replaced with three(3)trees or acorns,or combination the outermost edge of the protected zone of each tree or <br /> thereof• group of trees. Fencing, however, to protect trees on <br /> (3) The applicant shall be required to dem- slops that will not be graded is not required. <br /> onstrate to the satisfaction of the Review Authority that (1) Fences shall remain in place throughout the <br /> replacement stock will be planted and maintained in such entire construction period. <br /> a manner as to ensure that the survival of said stock at <br /> (2) No material, machinery, or objects of any <br /> the end of a three (3)year period commencing from the kind may be stored within the fenced area. <br /> date of planting. (c) Trenching. No trenching whatsoever shall be <br /> (e) Replanting Security.The Review Authority may allowed within the protected zone of subject trees_ If <br /> require, as a Condition of Approval, the applicant to underground utility lines must be installed within the <br /> provide a performance bond or other financial security to protected zone, the conduit shall be installed by boring <br /> replant any replacement tree found not to be alive at the or drilling through the soil_ <br /> end of the required three (3) year maintenance period. (d) Retaining Walls.In cases where retaining walls <br /> The form financial of the bond or other security shall be are required within the protected zone of the tree, the <br /> found acceptable by the County Counsel and the amount property owner shall complete said improvement before <br /> shall be sufficient to cover the County's cost to replant the completion of grading operations and before com- <br /> said trees_The Director shall,upon written request of the mencement of any construction. <br /> applicant at the end of the maintenance period,determine (e) Paving. Paving within the dripline of affected <br /> the health of the replacement trees and release the securi- trees shall be stringently minimized. If paving is neces- <br /> ty,in the event that all replacement trees are alive.In the sary,porous materials such as gravel,loose boulders,and <br /> event that the replacement trees are not alive,the Director cobbles, brick with sand joints, wood chips, or bark <br /> shall use all or part of the security to replant said trees. mulch shall be used. <br /> The applicant may be required to provide additional <br /> 590 <br />