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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 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. 5.3 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. 5.4 Loss of Trees The Contractor shall be responsible for the complete removal and replacement of any and all trees lost due to the Contractor's failure to perform under this agreement. Failure to perform includes but is not limited to, girdling trees with string trimmers or tree ties, improper planting of new trees, improper pruning/trimming techniques which disfigure or destroy the trees natural integrity and shape, or failure to detect and prevent treatable diseases and insect infestations. All trees that exhibit the signs of disease or pests, or any other signs of distress shall be inspected by an International Society of Arborist TRAQ Certified Hazardous Tree Professional approved by the Director's Representative. Contractor shall provide an exact location and separate evaluation/report for each tree in decline. Contractor shall treat any tree in decline at no additional cost to City. Should the TRAQ Certified Hazardous Tree Professional determine that the tree had a terminal disease that the Contractor could not have treated or prevented, the Contractor shall not be responsible to replace the tree. However, should the TRAQ Certified Hazardous Tree Professional determine that the tree's unhealthy condition or death could have been prevented had the Contractor treated the tree then Contractor shall be responsible for the cost of treatment to restore the tree to a healthy condition or replace the tree. The latest American Shade Tree Conference guidelines for value determination will determine the value of the trees lost. By entering into agreement with the City the Contractor acknowledges that they accept the condition of each tree and should a tree go into decline or expire, the Contractor agrees to replace the tree with like species and size or agree that the City shall withhold payment equal to the value of the tree. City of Santa Ana RFP 18-030 Page 14 25J-17