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-~ . . <br />Dan Sarich HortScience, Inc. <br />1 Sarich Property Tree Preservation Page 1 <br /> Introduction <br /> Dan Sarich is planning to develop the Sarich Property, located on Vineyard <br /> Avenue in Pleasanton, California. Mr. Sarich requested that HortScience, <br />_ <br />1 Inc. survey the trees growing on the site and evaluate their potential for <br />J preservation. This report summarizes our observations and <br /> recommendations regarding tree condition and suitability for preservation <br /> during development. This report provides the following information: <br />~ 1. A survey of trees currently growing on the site. <br />-.~ 2. An assessment of the impacts of constructing the proposed project <br /> on the trees. <br /> 3. Guidelines for tree preservation during the design and <br />J construction phases of development. <br /> Survey Methods <br /> The tree survey was conducted on March 14'h, 2002. The survey <br /> consisted of the following steps: <br /> 1. Tagging each tree with a numerically coded tag. <br /> 2. Recording its location on a site map (base map provided by <br /> Ruggeri, Jensen & Associates, Pleasanton CA). <br />J 3. Identifying the tree as to species. <br /> 4. Measuring the diameter of the trunk at a point 54" above <br /> grade. <br /> 5. Evaluating the health of the tree on a 0-5 scale, where 0 = <br />J dead, 1= poor and 5 =excellent condition. <br /> 6. Noting any areas of structural weakness such as decay, <br /> cracks, poor crown conformation, history of failure, etc. <br />J <br /> The results of the survey are found in the attached Tree Survey Forms. <br />Description of Trees <br />There were 226 trees surveyed on the Sarich Property, representing six <br />species (Table 1). The Tree Location Map in the Exhibits describes <br />each tree's location by tag number. Ninety-two (92) of the trees were in <br />the "Heritage tree" category as defined by the City of Pleasanton. <br />The site consisted of a residence with a large out-building and animal <br />pastures. The trees were part of a native woodland, with a few exotic <br />trees planted along roadways and near the residence. -Blue oak <br />dominated the site with 204 trees (94% of the population). There were <br />seven valley oaks (3% of the population) and three silver dollar gums <br />(1 %). The other three species were represented by a single tree each. <br />J <br />J <br />