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4. Tree Care a) Height/Quality of Pruning In July and August of each year the Contractor shall routinely Class 1 prune all trees up to a height of fifteen (I 5) feet. All trees within the scope of work shall be maintained to keep the natural integrity and shapes of the trees. Pruning shall be accomplished in a manner that will ensure that each individual tree is Class I pruned as set forth in the City of Santa Ana Tree Pruning/trimming and Stump Removal Specifications (see Attachment 9). In addition, the Director may require the Contractor to remove or prevent encroachment of trees into the public right of way where the tree blocks vision or is considered undesirable. Low branches overhanging sidewalks shall be trimmed to a height of nine (9) feet above finish grade. Young trees needing pruning/trimming, training, and shaping to develop caliper and a strong structural fi-ameworl: may have low branching laterals and or appropriate sucker ~~rowth. h) St;~l:in~~. "I~~~in<~ and Gu~~in~~ \II treys rc~~uirin~ ~taki~~~~ shill be sccurcly stal~c~l at ,ill tin~c~ ~~ith ~t~il:cs ~in~l rubber cinch ties approved by the Director. Rubber hoses and ~~~ire are not permitted ties. All stakes shall be set perpendicular to prevailing winds unless designated otherwise by the Director. Tree stakes shall also be set a consistent distance away from the trunk of the tree (minimum six (6) inches) to reduce abrasion and cell elongation. The tops of all tree stakes shall be removed approximately three (3) inches above the highest tie to reduce abrasion of main or lateral branches of the tree. c) Mulching of Bare Areas In designated tree ring areas where bare soil is visible the Contractor shall apply Aguinaga Black Forest Floor Mulch or approved equal size 0" to 1 ''/2", ''/z" thick minimum every other month starting in January during the third week as necessary to maintain uniform and complete coverage. Mulch is to be maintained within its boundaries. d) Fertilization (1) Cycad and Palms shall be fertilized two (2) times per year in March and September with Nutricote 13-5-I 1 total 3-stage controlled release palm fertilizer at the manufacturer's recommended rate. e) Hazardous Tree Reporting In the event the Contractor detects any tree displaying roots heaving or girdling (either by roots or a foreign material), leaning, broken or hanging limbs, or if Contractor determines that potential safety hazard may exist Contractor shall notify the Director by phone within twenty-four (24) hours. 20 25C-196