01/11/03 - Laserfiche WebLink

Home

54. Protection of the Critical Root Zone Selected text was: "The root system within the dripline is generally considered to be the critical root zone. To protect these critical root zones, a tree protection area shall be established around each tree or group of trees to be retained. The tree protection area shall include no less than the total area beneath the tree canopy as defined by the dripline of the tree or group of trees collectively." 55. Cutting Roots in Tree Preservation Areas Selected text was: "Where in authorized excavations, it becomes necessary to expose or cut roots more than one inch in diameter, it shall be the duty of the contractor to protect such root under advice from the Environmental Specialist or his/her designated agent. Trenching is prohibited for any reason, including utility installation within the dripline of protected trees during construction or thereafter. Tunneling to a minimum depth of thirty inches (30") below existing tree grade within the dripline is permitted." 56. Activities Not Allowed in Tree Preservation Area Selected text was: "There shall be no movement, clearing or storage of equipment within a designated tree protection zone. The owner, developer or agent shall not permit the placement of construction materials, debris, or soil deposits; not cause or permit disposal of waste materials such as paints, oils, solvents, asphalt, concrete, mortar or any other harmful material within the dripline of any protected tree." 57. Tree Preservation Barriers Selected text was: "All tree protection areas are recommended to be designated as such with "Tree Save Area" signs posted in addition to the required protective fencing. Signs requesting sub-contractor cooperation and compliance with tree protection standards are recommended for site entrances. These fences will be a minimum four (4) feet high. Four (4) foot orange polyethylene laminar safety fencing is acceptable. Passive forms of tree protection may be utilized outside the Metropolitan Urban Service Area to delineate tree save areas which are remote from areas of land disturbance. These areas must be completely surrounded with continuous rope or flagging (heavy mil - minimum 4" wide). All passive tree protection must be accompanied by "Keep Out" or "Tree Save" signage." 58. Silt Fence Tree Preservation Barriers Selected text was: "Silt barriers, hay bales or similarly effective erosion control barriers shall be required in accordance with the approved grading plan, and in any area where erosion or siltation may cause damage to protected trees." 59. Duration of Installation of Protective Barriers for Tree Preservation Selected text was: "All protective fencing, staking or continuous ribbon and all erosion control barriers must be installed prior to and maintained throughout the land disturbance and construction process, and should not be removed until final landscaping is installed and prior to issuance of certificate of occupancy."