Specifications include, but are not limited to: The work to be completed under this contract includes pruning and trimming of mature trees. 4.1.2. Standard pruning consists of the removal of dead, dying, diseased, decaying, interfering, objectionable, obstructing, and weak branches, as well as selective thinning to lessen wind resistance. The removal of such described branches is to include those on the main trunks, as well as those inside the leaf area. An occasional undesirable branch up to one inch (2.5 cm) in diameter may remain with the main leaf area where it is not practical to remove it. 4.1.3. All tree pruning work shall be performed by personnel who are an International Society of Arborists (ISA) Certified Tree Worker Aerial Lift Specialist. The Supervisor shall be an ISA Certified Arborist or ISA Board Certified Master Arborist. Upon request of the Department, the Contractor shall provide a list of the names and certificate numbers of ISA certified crew members and supervisors. 4.1.4. All tree trimmings and cuttings being removed from the work site shall be legally disposed of by the end of each work shift. The Contractor shall be responsible for all landfill, dump fees and the cost of which shall be inclusive with all other contract items of work...
