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i. No more than twenty five (25) percent of the live wood may be removed from the crown of any tree, without approval of an authorized SAPRF representative, excepting live oaks, which are limited to no more than ten (10) percent. Resulting in keeping as much of the crown of the tree as possible. j. Any extraneous metal, wire, rubber or other material (i.e. stakes, ties) interfering with tree growth shall be removed immediately. k. Any defective or weakened trees shall be reported to an authorized SAPRF representative. Specifically, any structural weakness of a tree, decayed trunk or branches, shall be reported in writing, noting the location of the tree by street address and a description of the hazard found in the tree. 1. The use of climbing spurs or spike shoes in the act of pruning trees is prohibited, except palms that are more than sixty-five (65) feet in height. in. Beneficial animal, bird nests, nesting cavities or other wildlife habitat shall be preserved and protected whenever feasible, unless doing so would create a hazard. 1.05 COMPLETE TREE PRUNING SPECIFICATIONS Complete tree pruning shall consist of the total removal of dead or living branches that may threaten the future health, strength and attractiveness of trees. Specifically, trees shall be pruned in such a manner as to: a. Prevent branch and foliage interference with requirements of safe public passage. Over street clearance shall be kept to a minimum of sixteen (16) feet above the paved surface of the street, fifteen (15) feet above the curb and eight (8) feet above the surface of a public sidewalk or pedestrian way. Exceptions are allowed for young trees, which would be irreparably damaged by such pruning action. b. Remove all dead and dying branches and branch stubs that are one half (1/2) inch diameter or larger. c. Remove all broken or loose branches. d. Remove any live branches, which interfere with the tree's structural strength, and healthful development, which will include the following: 1) Branches of weak structure, which are not important to the framework of the tree. 2) Branches, which if allowed to grow, would wedge apart the junction of more important branches. 3) Branches forming multiple leaders in a single leader type tree. 4) Branches near the end of a limb, which will produce more weight or offer more resistance to wind than the limbs are likely to support. 5) Selective removal of undesirable sucker and sprout growth paying specific attention not to nick or damage the sprout "burl". 6) Selective removal of one or more developing leaders where multiple branch growth exists near the end of broken or stubbed limbs. 43 25H-55