MIDORI GARDENS 6 - 2016 - Laserfiche WebLink

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5.1 Tree Service The Contractor shall perform continuous `Complete' tree pruning service including but not limited to raising tree branches to a safe and functional height for the type of activity beneath or around the tree (see Director's Representative for appropriate heights per activity beneath or around trees). In addition, the Contractor shall remove stubs, damaged, diseased or dead branches from trees. 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 `Complete' pruned as set forth in the PSTSS (see Attachment 5). In addition, the Director's Representative 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 framework may have low branching laterals and or appropriate sucker growth. Contractor shall remove hangers under 15" and fallen limbs 80 lbs. or less. 5.2 Annual Tree Evaluation Report In November of each year the Contractor shall have an International Society of Arborist TRAQ Certified Hazardous Tree Professional evaluate all District trees and provide a written report by park site listing findings and recommendations by priority of which trees need; 1) immediate service; 2) service within six months; or 3) service within one year; or, 4) service within two-four years. 5.3 Staking, Tying and Guying All trees requiring staking shall be securely staked at all times with stakes and rubber cinch ties approved by the Director. Rubber hoses and wire 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. 5.4 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 dispatch their International Society of Arborist TRAQ Certified Hazardous Tree Professional evaluate the trees and provide a written report listing findings and recommendations. 5.5 Loss of Trees The Contractor shall be responsible for the complete removal and replacement of any and City of Santa Ana RFP 16-063 Page 19