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immediate service; 2) service within six months; or 3) service within one year; or, 4) service within two-four years. The report shall list the tree specific service recommendations, if any, to assure the safety and optimum health of the trees. 2A.4 Staking, Tying and Guying 2.4.4.1. All trees requiring staking shall be securely staked at all times with stakes and rubber cinch ties approved by the Director's Representative. Rubber hoses and wire are not permitted ties. All stakes shall be set perpendicular to prevailing winds unless designated otherwise by the Director's Representative. 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. 2.4.5 Hazardous Tree Reporting 2.4.5.1 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 immediately to evaluate the trees and provide a written report listing findings and recommendations, While awaiting the ISA TRAQ Certified Hazardous Tree Professionals inspection and report, the Contractor shall protect people and property by installing a barrier around the tree to prevent people from entering the potentially hazardous zone. After the barrier has been installed the Contractor shall take time/date stamped photographs documenting they protected the site and warned people not to enter the potentially hazardous site beneath or by the tree. 2.4.6 Loss of Trees 2.4.6.1 The Contractor shall be responsible for the complete removal and replacement of any and all trees lost due to the Contractor's failure to identify and mitigate any issue that affects the safety and health of a tree(s). 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. The Contractor shall replace the lost tree with a specimen equal in value and size according the latest American Shade Tree Conference guidelines for value determination that determines the value of the trees lost. 2.4.6.2 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 City of Santa Ana RFP 19-092 Page 20