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Pruning should follow International Society of Arboriculture pruning standards. Pruning <br /> must be supervised by a certified arborist. <br /> Fertilize and Aerate the Soil. It is advisable to fertilize the trees before construction <br /> begins. Deep root liquid "feeding" with a fertilizer high in nitrogen,which also contains <br /> phosphorous and potassium, is recommended. <br /> 2. Trees within construction zones will be protected by a 6 foot high fence which will <br /> be installed prior to stripping and grading. The fence will remain in place until construction <br /> is completed and the occupancy permits have been given. The fence will be placed at the <br /> boundary of the Tree Protection Zone which corresponds to a minimum of 1.5 times the <br /> distance from the trunk to the dripline and 6 feet below ground. In cases where trees are <br /> grouped, the TPZ will be defined for the entire grove and the entire grove will be fenced. <br /> 3. No materials, equipment, mobile offices, outhouses, supplies,materials,vehicles <br /> or facilities will be parked, stockpiled, or located within the TPZ whether the tree is fenced <br /> or unfenced. <br /> 4. No soil will be removed from beneath the canopy of any tree. No cuts will be made <br /> within the TPZ. Cuts include trenching e.g. utilities, irrigation,fire standpipe lines, <br /> drainage lines, etc. <br /> 5. Trenching is not allowed within the TPZ. If it is absolutely necessary to install <br /> underground utilities within the TPZ, avoid areas within the dripline and bore or drill to <br /> minimize cutting of roots. Utility lines are not allowed within 10 feet of the trunk. <br /> 6. No earthen or other fill will be placed within the TPZ. Retaining wall with <br /> discontinuous footings will be used to keep soils away from the TPZ. If it is absolutely <br /> necessary to fill within the TPZ, avoid areas within the dripline. Fill is not allowed within <br /> 10 feet of the trunk. <br /> 7. If grade changes cannot be avoided near the driplines of trees,adequate drainage <br /> will be provided to eliminate ponding or soil saturation caused by elevation changes. The <br /> arborist/consultant will determine if the cuts necessitate mitigation plantings. However, no <br /> Buckeye Ranch Resource Plan (November, 1993) <br /> 254 <br />