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5.9 No more than twenty five (25) percent of the live wood may be removed from the crown <br />of any tree, without approval of an authorized SAPRP representative, excepting live oaks, <br />which are limited to no more than ten (10) percent. Resulting in keeping as much of the <br />crown of the tree as possible. <br />5.10 Any extraneous metal, wire, rubber or other material (i.e. stakes, ties) interfering with <br />tree growth shall be removed immediately. <br />5.11 Any defective or weakened trees shall be reported to an authorized SAPRF <br />representative, Specifically, any structural weakness of a tree, decayed trunk or branches, <br />shall be reported in writing, noting the location of the tree by street address and a <br />description of the hazard found in the tree. <br />5.12 The use of climbing spurs or spike shoes in the act of pruning trees is prohibited, except <br />palms that are more than sixty-five (65) feet in height. <br />5.13 Beneftcial animal, bird nests, nesting cavities or other wildlife habitat shall be preserved <br />and protected whenever feasible, unless doing so would create a hazard. <br />6.0 COMPLETE TREE PRUNING SPECIFICATIONS <br />Complete tree pruning shall consist of the total removal of dead or living branches that may <br />threaten the future health, strength and attractiveness of trees. Specifically, trees shall be pruned <br />in such a manner as to; <br />6.1 Prevent branch and foliage interference with requirements of safe public passage. Over <br />street clearance shall be kept to a minimum of sixteen (16) feet above the paved surface <br />of the street, fifteen (15) feet above the curb and eight (8) feet above the surface of a <br />public sidewalk or pedestrian way, Exceptions are allowed for young trees, which would <br />be irreparably damaged by such pruning action. <br />6.2 Remove all dead and dying branches and branch stubs that are one half (1/2) inch <br />diameter or larger, <br />6.3 Remove all broken or loose branches. <br />6.4 Remove any live branches, which interfere with the tree's structural strength, and <br />healthful development, which will include the following: <br />6.4.1 Branches, which rub and abrade a more important branch. <br />6.4.2 Branches of weak structure, which are not important to the framework of the tree. <br />6.4.3 Branches, which if allowed to grow, would wedge apart the junction of more <br />important branches. <br />6.4.4 Branches forming multiple leaders in a single leader type tree. <br />6.4.5 Branches near the end of a limb, which will produce more weight or offer more <br />resistance to wind than the limbs are likely to support. <br />6.4.6 Selective removal of undesirable sucker and sprout growth paying specific <br />attention not to nick or damage the sprout "burl', <br />6.4.7 Selective removal of one or more developing leaders where multiple branch <br />growth exists near the end of broken or stubbed limbs. <br />City of Santa Ana RFP 16-063 <br />Page 55 <br />