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0 <br /> DRAFT Preliminary Arborist Report HorlScience,Inc. <br /> Valley Trails.Ponderosa Homes Page 9 <br /> Tree Preservation Guidelines <br /> The goal of tree preservation is not merely tree survival during development but <br /> maintenance of tree health and beauty for many years. Impacts can be minimized by <br /> coordinating any construction activities inside the TREE PROTECTION ZONE. <br /> The following recommendations will help reduce impacts to trees from development and <br /> maintain and improve their health and vitality through the clearing,grading and <br /> construction phases. <br /> Design recommendations <br /> 1. Have the vertical and horizontal locations of all the trees identified for <br /> preservation established and plotted on all plans. Forward these plans to the <br /> Consulting Arborist for review and finalization of the assessment of impacts to <br /> trees. <br /> 2. Any plan affecting trees should be reviewed by the Consulting Arborist with <br /> regard to tree impacts. These include,but are not limited lo,improvement plans. <br /> utility and drainage plans,grading plans,landscape and irrigation plans and <br /> demolition plans. <br /> 3. A TREE PROTECTION ZONE must be established for trees to be preserved,In which <br /> no disturbance is permitted. TREE PROTECTION ZONES for trees identified for <br /> preservation are identified in the following table. No grading,excavation, <br /> construction or storage of materials shall occur within that zone. <br /> Specific Tree Protection Zones <br /> Tree No. - TPZ <br /> #234 10'N. DL in all other directions <br /> #235-242 5'N.DL in all other directions <br /> #243 and 244 10'W.,DL in all other directions <br /> #245 and 247 PL S.and DL In all other directions. <br /> 4. Tree Preservation Notes,prepared by the Consulting Arborist,should be <br /> included on all plans. <br /> 5. Underground services including utilities,sub-drains,water or sewer shall be <br /> routed around the TREE PROTECTION ZONE. Where encroachment Cannot be <br /> avoided,special construction techniques such as hand digging or tunneling <br /> under roots shall be employed where necessary to minimize root injury. <br /> 6. Irrigation systems must be designed so that no trenching will occur within the <br /> TREE PROTECTION ZONE. <br /> 7. Any herbicides placed under paving materials must be safe for use around trees <br /> and labeled for that use <br />