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0 r) <br /> Preliminary Arborist Report.Ponderosa Homes HortScience,Inc. <br /> Valley Trails,Pleasanton Page 1 <br /> Introduction and Overview <br /> Ponderosa Homes is proposing to redevelop the Valley Trails Church site,located on Valley Trails <br /> Dr.,in Pleasanton CA. Current site use consists of the church,a parking lot and landscaping in the <br /> southwest corner of the site and an open field on the remainder. Ponderosa Homes requested that <br /> HortScience, Inc.prepare an Arborist Report for the site. This report provides the following <br /> information: <br /> This report provides the following Information: <br /> 1. An evaluation of the health and structural condition of the trees within the proposed project <br /> area based on a visual inspection from the ground. <br /> 2. An assessment of the development impacts to the trees based on the drawings provided <br /> by Ponderosa Homes. <br /> 3. Guidelines for tree preservation during the design,construction and maintenance phases <br /> of development. <br /> 4. A Tree Assessment Form,providing a description of each tree and a Tree Assessment <br /> Map showing the location of trees by tag number. <br /> Assessment Methods <br /> Trees were assessed on February 13,2015. The assessment included all trees 6'and larger in <br /> diameter,within and adjacent to the proposed project. Tag numbers used ranged from#223 to <br /> 247.The assessment procedure consisted of the following steps: <br /> 1. Identifying the tree as to species; <br /> 2. Tagging each tree with a numerically coded metal tag and recording its location on a <br /> map; <br /> 3 Measuring the trunk diameter at a point 54"above grade; <br /> 4. Evaluating the health and structural condition using a scale of 1—5: <br /> 5-A healthy,vigorous tree,reasonably free of signs and symptoms of disease,with <br /> good structure and form typical of the species. <br /> 4-Tree with slight decline in vigor, small amount of twig dieback,minor structural <br /> defects that could be corrected. <br /> 3-Tree with moderate vigor,moderate twig and small branch dieback,thinning of <br /> crown,poor leaf color,moderate structural defects that might be mitigated with <br /> regular care. <br /> 2-Tree in decline,epicormic growth,extensive dieback of medium to large branches, <br /> significant structural defects that cannot be abated. <br /> 1-Tree in severe decline,dieback of scaffold branches and/or trunk;most of foliage <br /> from epicormics;extensive structural defects that cannot be abated. <br /> 5. Rating the suitability for preservation as"high",'moderate or"low". Suitability for <br /> preservation considers the Invasiveness of the species,health,age and structural <br /> condition of the tree,and its potential to remain an asset to the site. <br /> High: Trees with good health and structural stability that have the potential <br /> for longevity at the site. <br /> Moderate: Trees with somewhat declining health and/or structural defects than <br /> can be abated with treatment. The tree will require more intense <br /> management and monitoring,and may have shorter life span than <br /> those in'high'category. <br /> Low: Trees in poor health or with significant structural defects that cannot <br /> be mitigated. The tree is expected to continue to decline,regardless <br /> of treatment. The species or individual may have characteristics that <br /> are undesirable for landscapes,and generally are unsuited for use <br /> areas. <br />