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(heavy mil - minimum 4" wide). "Keep Out" or "Tree Save" signage <br />must accompany all passive tree protection methods. <br /> <br />e. No construction shall begin until this work has been completed, <br /> inspected, and accepted by the City. <br /> <br />Silt barriers or similarly effective erosion control barriers shall be <br />required in any area where erosion or siltation may cause damage to <br />protected trees. <br /> <br />All protective tree fencing, staking or continuous ribbon and ail <br />erosion control ban'iers must be installed prior to and maintained <br />throughout the land disturbance and construction process, and should <br />not be removed until acceptable xsegetatlon is established. <br /> <br /> Subd. 5. Critical Root Zone. The root.system within the dripline is <br />generally considered to be the critical root zone. To protect these critical root zones, a <br />tree protection area shall be established around each tree or group of trees to be retained. <br /> <br />The tree protection area shall include no less than the total area . <br />beneath the tree canopy as defined by the dripline of the tree or group <br />o£trees collectively. <br /> <br />bo <br /> <br />Wherein authorized excavations it becomes necessary to expose or cut <br />roots more than one (1) inch in diameter, it shall be the duty of the <br />contractor to protect such root(s) under advice from the City. <br /> <br />All open trenching is prohibited. Utility installation within the dripline <br />of protected trees, during construction or thereafter, can only occur <br />using trenchless methods. <br /> <br />The mowing, clearing, and grubbing of brush located within or under <br />the dripline of protected trees may be allowed, provided such mowing, <br />clearing, or grubbing is accomplished by hand or by mowers. The use <br />of heavy equipment for this purpose shall not be allowed. <br /> <br /> Subd. 6. Protection from Disease and Pestilence, All clearing in <br />oak stands shall be performed prior to April 15th or after July 15th of each season. Any <br />development involving oak trees on or adjacent to the development area must submit a <br />plan in conjunction with the preliminary plat. <br /> <br /> Subd. 7. Encroachment. If encroachment into a tree preservation <br />area occurs that causes irreparable damage to the trees, the tree preservation plan shall be <br />revised to compensate for the loss. Under no circumstances shall the developer be <br />relieved of responsibility for compliance with the provisions of this ordinance, nor shall <br /> <br />136 <br /> <br /> <br />