The work to be performed under this contract includes furnishing all labor, equipment, materials, and expertise necessary to remove or trim trees in proximity and not in proximity to overhead utilities and to remove stumps and provide berm restoration services. Trees vary in size from 19-150 inches in diameter (DBH) and may reside on public rights-of-way and other City of Detroit own properties. Vendors shall provide tree pruning and tree removal services in accordance with the International Society of Arboriculture (ISA) along with the American National Standard Institute (ANSI A300) standards and practices. Work is to be performed only after a work order has been issued by the City’s Forestry Division. The tree and stump removal measurements will be taken at diameter breast height (DBH). The measurement will be rounded to the nearest full inch. Tree trimming will be paid for as a unit price, per tree, per DBH range. Vendors shall provide all labor, materials, supplies, equipment and supervision to perform tree trimming and tree removal in accordance with the following specifications: Tree Trimming • Dead or broken limbs • Crossed or rubbing limbs • Obstruction clearance for lighting, traffic, pedestrians, street signs or traffic signals. • Appearance of the tree. Care will be taken to retain and enhance the natural shape of the species. • Disease prevention • No topping or dehorning of trees shall be permitted, except by written permission of the Forestry Division.
