AZTECA LANDSCAPE-2015 - Laserfiche WebLink

Home Browse Search

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 3), 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 framework may have low branching laterals and or appropriate sucker growth. Contractor shall remove hangers under 15" and fallen limbs 80 lbs. or less. b) 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. c) Mulching of Bare Areas In designated tree ring areas where bare soil is visible the Contractor shall apply US Composting Council STA tested and approved compost mulch 2" minus by '/2" thick minimum two time per year (the third week of December and June) and as necessary to maintain uniform and complete coverage. Leaf litter and other organic materials other than mulch shall be removed on a continuous basis. d) 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. e) 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 a Certified Arborist approved by the Director. 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 Certified Arborist 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 Certified Arborist 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. District 4 Park Landscape Specification