5_Exhibits A-C - Laserfiche WebLink

Updated Arborist Report HortScience I Bartlett Consulting Sarvana Chilla, 3987 Stanley Page 10 Maintenance of impacted trees Trees preserved at the Stanley site may experience a physical environment different from that of pre-development. As a result, tree health and structural stability should be monitored. Occasional pruning, fertilization, mulch, pest management, replanting and irrigation may be required. Summary You are planning to construct three residential buildings on the property. Four trees are considered to be Heritage as defined by the City of Pleasanton. I recommend that eight trees be removed, one of which is in poor condition. I recommend preservation of nine, including two off- site trees. Tree#18 can be retained with the recommendations for the design change, including no turf or grade change within 10' of the tree. Tree#1 is an off-site tree and approaching the neighbor is recommended. Two trees are located on the east portion of the yard, adjacent to the proposed driveway. Tree vigor and overall structure of tree#1 was fair and tree#18 was good. At its closest point, the footprint will be within the trunk. Impacts from the project to the tree will come primarily from excavation for the driveway foundation. The driveway will impact crape myrtle (#1). I established the appraised value of these two trees as $49200. Preliminary Tree Preservation Guidelines are provided. Please contact me with any questions. I look forward to hearing from you. Sincerely, Maryellen Bell ISA Certified Arborist WE-5643A Attached: Tree Assessment Map Tree Assessment Form Tree Appraisal diameter will occur within the TREE PROTECTION ZONE. 7. Construction trailers, traffic and storage areas must remain outside TREE PROTECTION ZONE at all times. 8. Any root pruning required for construction purposes shall receive the prior approval of and be supervised by the Project Arborist. Roots should be cut with a saw to provide a flat and smooth cut. Removal of roots larger than 2" in diameter should be avoided. If roots 2"and greater in diameter are encountered and during site work must be cut to complete the construction, the Project Arborist must be consulted to evaluate effects on the health and stability of the tree and recommend treatment. 9. If injury should occur to any tree during construction, it should be evaluated as soon as possible by the Project Arborist so that appropriate treatments can be applied. 10. No excess soil, chemicals, debris, equipment or other materials shall be dumped or stored within the TREE PROTECTION ZONE. 11. Any additional tree pruning needed for clearance during construction must be performed by a Certified Arborist and not by construction personnel. 12. Trees that accumulate a sufficient quantity of dust on their leaves, limbs and trunk as judged by the Project Arborist shall be spray-washed at the direction of the Project Arborist. 13. All trees shall be irrigated on a schedule to be determined by the Project Arborist(every 3 to 6 weeks during the warm season is typical). Each irrigation shall wet the soil within the TREE PROTECTION ZONE to a depth of 30". xtracting the trees, or grinding the stump below ground. 7. Structures and underground features to be removed within the 10' of a tree shall use equipment that will minimize damage to trees above and below ground, and operate from outside the Tree Protection Zone. Tie back branches and wrap with protective materials to protect from injury as directed by the Project Arborist. The Project Arborist shall be on- site during all operations within the Tree Protection Zone to monitor demolition activity. spection. The location factor considers the site, placement and contribution of the tree in its surrounding landscape.