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Tree Report, 218 Ray Street, Pleasanton Ed Brennan, Consulting Arborist
<br /> February 12, 2020 Page 1
<br /> Introduction and Overview
<br /> Win Structural Consulting Group, Inc. is planning to build an office building located at 218
<br /> Ray Street in Pleasanton. Ed Brennan, Consulting Arborist, was asked to prepare a Tree
<br /> Preservation Report for the project for review by the City of Pleasanton.
<br /> This report provides the following information:
<br /> 1. A survey of trees currently growing on the site.
<br /> 2. An evaluation of each tree's suitability for preservation.
<br /> 3. An evaluation of the value of each tree in U.S. Dollars
<br /> 4. An assessment of the impacts of constructing the proposed project on the trees.
<br /> 5. Guidelines for preserving selected trees during development.
<br /> Survey Methods
<br /> Trees were surveyed on February 7, 2020. The survey included trees greater than 6" in
<br /> diameter. The survey procedure consisted of the following steps:
<br /> 1. Identifying the tree as to species;
<br /> 2. Tagging each tree with an identifying number and recording its location on a
<br /> map;
<br /> 3. Measuring the trunk diameter at a point 54" above grade;
<br /> 4. Measuring the dripline in the four cardinal directions.
<br /> 5. 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,
<br /> with good structure and form typical of the species.
<br /> 4-Tree with slight decline in vigor, small amount of twig dieback, minor
<br /> structural defects that could be corrected.
<br /> 3-Tree with moderate vigor, moderate twig and small branch dieback, thinning
<br /> of crown, poor leaf color, moderate structural defects that might be
<br /> mitigated with regular care.
<br /> 2-Tree in decline, epicormic growth, extensive dieback of medium to large
<br /> branches, significant structural defects that cannot be abated.
<br /> 1 -Tree in severe decline, dieback of scaffold branches and/or trunk; most of
<br /> foliage from epicormics; extensive structural defects that cannot be abated.
<br /> 0—Tree is dead
<br /> 6. Rating the suitability for preservation as"good", "moderate"or"poor". Suitability
<br /> for preservation considers the health, age and structural condition of the tree,
<br /> and its potential to remain an asset to the site for years to come.
<br /> Good: Trees with good health and structural stability that have the
<br /> potential for longevity at the site.
<br /> Moderate: Trees with somewhat declining health and/or structural defects
<br /> than can be abated with treatment. The tree will require more
<br /> intense management and monitoring, and may have shorter life
<br /> span than those in `good' category.
<br /> Poor. Tree in poor health or with significant structural defects that
<br /> cannot be mitigated. Tree is expected to continue to decline,
<br /> regardless of treatment. The species or individual may have
<br /> characteristics that are undesirable for landscapes, and
<br /> generally are unsuited for use areas.
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