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Page 10 <br />minimum of 1 year following acceptance of public improvements or completion of construction, <br />whichever is later, and shall be forfeited if the trees are destroyed or substantially damaged. An <br />arborist shall be onsite during any tree work (i.e. root pruning, trimming, setting up tree <br />protection, etc.). The bond or security may be released early with a certification letter by the <br />arborist confirming he/she was present during said tree work and work was performed in <br />accordance with the arborist’s recommendations. <br />56. ROOT CONTROL BARRIER: The applicant shall provide root control barriers and 4-inch <br />perforated pipe for all trees located within 8-feet of pavement or other hardscape, determined by <br />the City Landscape Architect. Root barriers shall be located along the edge of the pavement <br />wherever the tree is within 8-feet of pavement or hardscape. Information and details shall be <br />included in the landscape plan submittal for review and approval by the Landscape Architecture <br />Division. <br />57. TREE PRUNING: Pruning shall be conducted by a certified arborist familiar with the <br />International Society of Arboriculture (ISA) pruning guidelines and shall comply with the <br />guidelines established by the ISA, Tree Pruning Guidelines, current edition, to maintain the <br />health of the trees. <br />58. TREE PROTECTION FENCING: Prior to issuance of a grading or building permit, the applicant <br />shall install temporary 6-foot tall chain-link fencing (or other fence type acceptable to the <br />Landscape Architecture Division) outside of the existing tree drip lines. The location of the tree <br />protection fencing shall be shown on the demolition plans (if applicable), grading, building, <br />and/or landscape plans. The fencing shall remain in place until final landscape inspection by the <br />Landscape Architecture Division. Removal of such fencing prior to approval may result in a “stop <br />work order.” <br />59. PROJECT PLANS: The following statements shall be printed on the demolition, grading and <br />landscape plans where applicable to the satisfaction of the City Landscape Architect prior to <br />issuance of building permits: <br />a. No existing tree may be trimmed or pruned without prior approval by the City <br />Landscape Architect. <br />b. Utilize best efforts to locate any new utility trenches outside of the existing <br />canopy of the trees to be saved. If this is not feasible, the applicant shall submit a <br />report from a certified arborist acceptable to the City indicating trenching will not <br />be detrimental to the health of the tree. <br />c. Nothing may be stored within the dripline of the tree canopies. This includes <br />equipment, oil, gas, chemicals, harmful materials, fill or storage. <br />d. No oil, gasoline, chemicals, or other harmful materials shall be deposited or <br />disposed within the dripline of the trees or in drainage channels, swales, or areas <br />that may lead to the dripline. <br />e. No sign, wires, or ropes shall be attached to the trees. <br />f. No stockpiling/storage of construction materials, fill, etc., shall take place <br />underneath or within 5-feet of the dripline of the existing trees. <br />g. No equipment or temporary structures shall be placed within or beneath the <br />dripline of the existing trees.