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Tree Report, Pleasanton, CA Page 7 April 5, 2006 Appraisal of Value The City of Pleasanton requires that the value of trees to be preserved be established and included as part of a Tree Report. To establish these values, 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. The value of landscape trees is based upon 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. The Species Classification and Group Assignment lists recommended species ratings and evaluations. Condition reflects the health and structural integrity of the trees prior to removal. The location factor considers the site, placement and contribution of the tree in its surrounding landscape. Considering the four factors noted above, I established the value of the 16 trees recommended for preservation to be $11,080 (Table 4). Table 4. Appraisal of value: Vineyard Pass LLC. Pleasanton CA. (Heritage trees in bold) ~. Tree No. Species Appraised Value 68 Coast redwood $550 70 Italian stone pine $1,100 71 Monterey pine $550 72 Italian stone pine $450 73 Cypress $900 74 Italian stone pine $400 75 Italian stone pine $50 76 Italian stone pine $30 78 Gallery pear $1,000 79 Evergreen pear $850 81 Raywood ash $1,000 82 Italian stone pine $250 83 Monterey pine $200 87 Chinese pistache $1,850 88 Chinese pistache $1,400 91 Monterey pine $500 Tree Preservation Guidelines care with which demolition is undertaken, and construction methods. Coordinating any construction activity inside the TRee PROrecnoN Zoiue can minimize these impacts. The goal of tree preservation is not merely tree survival during development but maintenance of tree health and beauty for many years. Trees retained on sites that are either subject to extensive injury during construction or are inadequately maintained become a liability rather than an asset. The response of individual trees depends on the amount of excavation and grading, Vineyard Pass Subdivision HortScience, Inc.