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May 4.2017 (� Torrey Young,Dryad.LLC 17022-20093 H.I.P.Renovations-Home Improvement Pros Site:3552 Yellowstone C1.Pleasanton.CA Tree no.2,glossy privet(Lfgusfrum Japonica): This tree does not qualify as a Heritage Tree either by size or species. While it has structural weaknesses, it is of small stature,good vigor and free of significant insects or disease. If removal is preferred, no permit is required. Recommendations: • Install protective fencing on as large a perimeter as possible to protect the driptine area of the tree. • Install a layer of organic mulch to a settled depth of 3-4 inches,throughout the tree's dripline, including beyond any protective fencing. • Perform only the minimum of pruning required for clearance, by removing as little foliage as possible. Tree no.3,sweetgum(Ligruidantbar styracimua): While this tree is not in direct conflict with construction, it exhibits several issues that render it a poor candidate for long-term preservation in this location. The species can achieve very large size which is inappropriate in this restricted growing space adjacent to the home, driveway and sidewalk_ The species is known for a vigorous,surface rooting character that often contributes to hardscape damage. Signs of a bacterial infection(exuding lower trunk)can also be a sign of decay and/or root disease. The weakly attached codominant trunks are susceptible to failure. Cabling and bracing can reduce but eliminate this risk. Preserving will necessitate minor pruning for clearance purposes. Recommendations: Remove. If removal is unacceptable, protect during construction as follows. • Install protective fencing on as large a perimeter as possible to protect the dripline area of the tree. • Install a layer of organic mulch to a settled depth of 3-4 inches, throughout the tree's dripline, including beyond any protective fencing. • Perform only the minimum of pruning required for clearance,by removing as little foliage as possible. • Consider Installing a cable between the two codominant stems and a bolt at the attachment in (not related to construction). TREE PRESERVATION RECOMMENDATIONS: For any trees to be retained, 1 recommend following the General Construction Site Tree Preservation Guidelines on page 10 of this report. I also recommend that the guidelines in the following publications(or their latest revisions) be followed as closely as possible,within the limitations of the requirements of the City of Pleasanton: • American National Standards Institute, 2012. Tree, Shrub and Woody Plant Management Standard Practices, Management of Trees&Shrubs During Site Planning, Site Development and Construction, American National Standards Institute(ANSI A300-Part 5, 2012) • Kelby Fite and E.Thomas Smiley, 2008, Best Management Practices, Managing Trees During Construction, International Society of Arboriculture. • lura theny, Nelda P.;Clark,James R.; 1998. Trees and Development, International Society of Arboriculture. 4. + + 35570 Patarnares Rd. PHONE (510)538-6000 i4 Castro Valley CA 94552 FAX (510)538-5001 •• tyoun9( idryadlls.cern WEB SITE WWW.dryad.tc_corn 9 a'