Specifications include, but are not limited to: 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. Trees vary in size from 19-150 inches in diameter (DBH) and may reside on public rights0of-way and other city-owned properties. The successful Bidder shall provide tree trimming and tree removal services in accordance with generally accepted standards and practices. Work is to be performed only after a work order has been issued by the Forestry Division. The tree and stump removal measurements will be taken at diameter breast high (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. The successful Bidder 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. Cuts • All cuts shall be made at nodes or crotches with a saw or pruner. No hatches will be allowed. All cuts should be made ready at the branch collar so that healing can readily begin under normal conditions. • All tools being used on a tree suspected of being infected with a contagious disease shall be thoroughly disinfected before use on another tree. Tree Removal • All trees removed under this Contract shall be subject to authorization of the Forestry Division. The Contractor shall be responsible for all damages caused by their removal. This includes damage to the sidewalk, driveway, grass, plantings, etc. • Stump grinding is required when removal operations occur. The required work shall also include the grinding of all stumps to at least eight (8) inches below grade level, backfilling with topsoil to grade and apply grass seed. Stump Removal • Remove tree stumps located in the public right-of-way throughout the City as directed by the Forestry Division. • The Contractor shall grind stumps a minimum of eight (8) inches below grade. All protuberant surface and subsurface roots beyond the stump areas, noticeable from visible inspection, shall be removed to a depth of at least eight (8) inches below grade. • The work required shall also include backfilling with topsoil to grade and applying grass seed. • The Contractor shall remove and properly dispose of all excess material and debris from the work site.
