2_Exhibits A, C & D - Laserfiche WebLink

Updated Arborist Report HortScience, Inc. 4112 Foothill Rd., October 29, 2018 Page 7 5. Utilities—keep all utilities (wet and dry)outside the TPZ 6. Landscaping—the best treatment under oaks is a thick layer of organic mulch, such as wood chip mulch. Avoid planting and installation of irrigation within oak tree driplines. 7. Lighting—the use of up-lights at the edge of the canopy is preferred over the installation of conduits and/or cables attached to the trunk and major branches. Up-lights highlighting the tree's branch architecture, reduce impacts to the tree, provides a clean installation and are easier to maintain. 8. Liming soil—do not apply lime to the soil for compaction purposes within 50'of the dripline of the tree. Lime is toxic to roots. Pre-construction treatments and recommendations 1. The construction superintendent should meet with the Consulting Arborist before beginning work near the tree to discuss work procedures and tree protection measures. 2. Fence the tree to be retained to completely enclose the TREE PROTECTION ZONE prior to demolition, excavation, or construction. Fence locations are plotted on the Fence Location Map. Fence shall be 6 ft. chain link with steel posts embedded in the ground. Fences are to remain until all construction is completed. 3. Prune trees to raise crowns as minimally as possible to accomplish clearance for grading and construction activities. All pruning shall be done by a State of California Licensed Tree Contractor(C61/D49). All pruning shall be done by Certified Arborist or Certified Tree Worker in accordance with the Best Management Practices for Pruning (International Society of Arboriculture, 2002)and adhere to the most recent editions of the American National Standard for Tree Care Operations(Z133.1)and Pruning (A300). While in the tree, the Certified Arborist should perform an aerial inspection to identify defects that are not visible from the ground that require treatment. 4. All tree work shall comply with the Migratory Bird Treaty Act as well as California Fish and Wildlife code 3503-3513 to not disturb nesting birds. To the extent feasible tree and pruning and removal should be scheduled outside of the breeding season. Breeding bird surveys should be conducted prior to tree work. Qualified biologists should be involved in establishing work buffers for active nests. 5. Apply and maintain a 4-6"-deep layer of wood chip mulch (gorilla hair mulch is not acceptable)within the TREE PROTECTION ZONE. Keep mulch 24-30"from the trunk. Allow leaf litter to accumulate under the tree. Recommendations for tree protection during construction 1. No demolition, excavation, construction or storage of materials shall occur within the TREE PROTECTION ZONE unless approved and monitored by the Consulting Arborist. No underground services including utilities, sub-drains, water, sewer or irrigation shall be placed in the TREE PROTECTION ZONE unless approved and monitored by the Consulting Arborist. Spoil from trench, footing, utility or other excavation shall not be placed within the TREE PROTECTION ZONE, either temporarily or permanently. Any modifications must be approved and monitored by the Consulting Arborist. 2. All demolition, excavation and construction within the dripline of trees shall be done using the smallest equipment possible. The Consulting Arborist will identify where hand excavation may be required. Motorized equipment shall not be used within the TREE PROTECTION ZONE. 3. Prior to excavation for the demolition and construction the tree may require root pruning outside the TREE PROTECTION ZONE by cutting all roots cleanly to the depth of construction. Roots will be exposed by either: pulling soil away from the tree by digging , normally 54"above grade. A multi-branched tree, which has