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2_Exhibits A-E
City of Pleasanton
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BOARDS AND COMMISSIONS
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2020 - PRESENT
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2022
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11-09
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2_Exhibits A-E
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11/2/2022 2:23:25 PM
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CITY CLERK
CITY CLERK - TYPE
AGENDA REPORT
DOCUMENT DATE
11/9/2022
DESTRUCT DATE
15Y
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\BOARDS AND COMMISSIONS\PLANNING\AGENDA PACKETS\2020 - PRESENT\2022\11-09
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Arborist Report. May 8, 2021. HortScience, Inc. <br />535 Sycamore Road. Davasam and Chekka. Page 10 <br /> <br /> <br />Estimate of Value <br />The City of Pleasanton requires that the value of trees on development sites be <br />estimated. To estimate the value of the assessed trees, I employed the standard <br />methods found in Guide for Plant Appraisal, 9th edition (published in 2000 by the <br />International Society of Arboriculture, Savoy IL). In addition, I referred to Species <br />Classification and Group Assignment (2004), a publication of the Western Chapter of <br />the International Society of Arboriculture. These two documents outline the methods <br />employed in tree appraisal. <br /> <br />My estimate of the cost to reproduce each tree considers four factors: size, species, <br />condition and location. Size is measured as trunk diameter, normally 54" above grade. <br />The species factor considers the adaptability and appropriateness of the plant in the East <br />Bay area. The Species Classification and Group Assignment lists recommended <br />species ratings and evaluations. Condition reflects the health and structural integrity of <br />the individual. The location factor considers the site, placement and contribution of the <br />tree in its surrounding landscape. In this case, trees were located in a transitional <br />neighborhood with new homes on the north side of Sycamore Road and older homes on <br />the south. <br /> <br />The estimated value of the 43 trees recommended for preservation was $140,350; for the <br />23 trees recommended for removal, $80,450 (Table 3). <br /> <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 /> <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. Design recommendations <br />1. Any plan affecting trees should be reviewed by the Consulting Arborist with <br />regard to tree impacts. These include, but are not limited to, improvement plans, <br />utility and drainage plans, grading plans, landscape and irrigation plans and <br />demolition plans. <br /> <br />3. A TREE PROTECTION ZONE must be established for trees to be preserved, in which <br />no disturbance is permitted. No grading, excavation, construction or storage of <br />materials shall occur within that zone. The TREE PROTECTION ZONE shall be 2- <br />feet behind the edge of grading or construction. <br /> <br />4. Tree Preservation Notes, prepared by the Consulting Arborist, should be <br />included on all plans. <br /> <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 /> <br />6. Irrigation systems must be designed so that no trenching will occur within the <br />TREE PROTECTION ZONE.
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