The Contractor shall provide the highest quality of tree pruning, removal and maintenance services. The Contractor agrees to provide the highest quality commercially accepted methods, procedures and controls for tree pruning, removal, and maintenance consistent with the International Society of Arboriculture Pruning Standards Best Management Practices (BMPs), ANSI A300 Standards and information in standard arboriculture industry references. This shall include the use of proper knowledge, skills, materials and equipment of a timely basis to maintain all areas in a clean, safe, healthy, and aesthetically acceptable manner during the entire term of this contract. The Contractor shall furnish tree services by qualified arborists, site managers, and tree worker crews to provide tree pruning, removal, and maintenance activities that comply with this scope of services. It will be the responsibility of the Contractor to provide all equipment, materials, and labor as necessary to perform the work described in this document in a safe, efficient, and legal manner. The Contractor shall provide pricing to the City for the following work descriptions that will be used during the contract period by the City and the Contractor for the various site locations. 1. Tree Pruning: Tree pruning and maintenance services shall be performed according to the most current editions of the following benchmark standards: a) American National Standards Institute (ANSI) A300 Part 1 Pruning Standards b) ANSI Z133 Safety Standards c) ISA Best Management Practices: Tree Pruning To ensure that pruning is appropriate for the species and tree/site conditions, it is important to have a clear understanding of the specific needs of the tree and the objectives for pruning. Pruning objectives include the following: • Improve structural strength and reduce failure potential. • Provide clearance for pedestrians, vehicles, structures and low voltage utilities. • Improve safety and security for residents and visitors. • Repair structural damage from wind loading. • Improve aesthetic characteristics. • Reduce maintenance costs. • Prevent or mitigate a pest problem. • Remove rubbing limbs, crossing limbs, mistletoe and limbs out of balance. Any structural weakness, decayed trunk or branches, split crotches or limbs and included bark discovered by the Contractor during the course of trimming shall be reported to the City’s designated representative for determination of action, as soon as it is discovered. Clearance pruning shall be defined as to provide the following distances: • Roadway ‐ not less than 14’ 6” from road surfaces. • Sidewalk ‐ not less than 10’ from sidewalk surfaces. • Building ‐ not less than 6’ from vertical building surfaces. • Roofs and Streetlights ‐ not less than 6’ from roofs or street lamps. • Utility and Telecom Drop Lines ‐ not less than 2’ or sufficient clearance to prevent service interruption and vascular tree growth onto wires. • Along sound walls- cut back even to the wall using proper reduction cuts.
