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Tree Report, Vineyard Pass Subdivision Pleasanton, CA April 5, 2006 HortScience, Inc. Page 1 Introduction and Overview Vineyard Pass LLC is planning to develop the site at 865 Clara Ln. in Pleasanton, CA. The project would create a three lot subdivision. Current site use consists of a single family home, outbuildings and corrals. A large portion of the site is undeveloped. HortScience, Inc. was asked to prepare a Tree Report for the site as part of the application to the City of Pleasanton. The report provides the following information. 1. A survey of trees within the proposed project area. 2. An assessment of the impacts of constructing the proposed project on the trees. 3. Guidelines for tree preservation during the design, construction and maintenance phases of development. Survey Methods Trees were surveyed on March 31, 2006. The survey included trees approximately 6" in diameter and greater, located within the proposed project area. The survey procedure consisted of the following steps: r, 1. Tagging each tree with an identifying number and recording its location on a map; 2. Identifying the tree as to species; 3. Measuring the trunk diameter at a point 54" above grade; 4. Evaluating the health and structural condition using a scale of 0 - 5: 5 - A healthy, vigorous tree, reasonably free of signs and symptoms of disease, with good structure and form typical of the species. 4 -Tree with slight decline in vigor, small amount of twig dieback, minor structural defects that could be corrected. 3 -Tree with moderate vigor, moderate twig and small branch dieback, thinning of crown, poor leaf color, moderate structural defects that might be mitigated with regular care. 2 -Tree in decline, epicormic growth, extensive dieback of medium to large branches, significant structural defects that cannot be abated. 1 -Tree in severe decline, dieback of scaffold branches andlor trunk; most of foliage from epicormics; extensive structural defects that cannot be abated. 0 - Dead. 5. Rating the suitability for preservation as "good", "moderate" or "poor". Suitability for preservation considers the health, age and structural condition of the tree, and its potential to remain an asset to the site for years to come. Good: Trees with good health and structural stability that have the potential for longevity at the site. Moderate: Trees with somewhat declining health andlor structural defects than can be abated with treatment. The tree will require more intense management and monitoring, and may have shorter life span than those in 'good' category. Poor. Trees in poor health or with significant structural defects that cannot be mitigated. Tree is expected to continue to decline, regardless of treatment. The species or individual may have characteristics that are undesirable for landscapes, and generally are unsuited for use areas.