2_Exhibits A-E - Laserfiche WebLink

Arborist Report. May 8, 2021. HortScience, Inc. 535 Sycamore Road. Davasam and Chekka. Page 10 Estimate of Value The City of Pleasanton requires that the value of trees on development sites be estimated. To estimate the value of the assessed trees, I employed the standard methods found in Guide for Plant Appraisal, 9th edition (published in 2000 by the International Society of Arboriculture, Savoy IL). In addition, I referred to Species Classification and Group Assignment (2004), a publication of the Western Chapter of the International Society of Arboriculture. These two documents outline the methods employed in tree appraisal. My estimate of the cost to reproduce each tree considers four factors: size, species, condition and location. Size is measured as trunk diameter, normally 54" above grade. The species factor considers the adaptability and appropriateness of the plant in the East Bay area. The Species Classification and Group Assignment lists recommended species ratings and evaluations. Condition reflects the health and structural integrity of the individual. The location factor considers the site, placement and contribution of the tree in its surrounding landscape. In this case, trees were located in a transitional neighborhood with new homes on the north side of Sycamore Road and older homes on the south. The estimated value of the 43 trees recommended for preservation was $140,350; for the 23 trees recommended for removal, $80,450 (Table 3). Tree Preservation Guidelines The goal of tree preservation is not merely tree survival during development but maintenance of tree health and beauty for many years. Impacts can be minimized by coordinating any construction activities inside the TREE PROTECTION ZONE. The following recommendations will help reduce impacts to trees from development and maintain and improve their health and vitality through the clearing, grading and construction phases. Design recommendations 1. Any plan affecting trees should be reviewed by the Consulting Arborist with regard to tree impacts. These include, but are not limited to, improvement plans, utility and drainage plans, grading plans, landscape and irrigation plans and demolition plans. 3. A TREE PROTECTION ZONE must be established for trees to be preserved, in which no disturbance is permitted. No grading, excavation, construction or storage of materials shall occur within that zone. The TREE PROTECTION ZONE shall be 2- feet behind the edge of grading or construction. 4. Tree Preservation Notes, prepared by the Consulting Arborist, should be included on all plans. 5. Underground services including utilities, sub-drains, water or sewer shall be routed around the TREE PROTECTION ZONE. Where encroachment cannot be avoided, special construction techniques such as hand digging or tunneling under roots shall be employed where necessary to minimize root injury. 6. Irrigation systems must be designed so that no trenching will occur within the TREE PROTECTION ZONE.