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Arborist Report, 5980 / 5988 Sunol Blvd. March 5, 2007 INTRODUCTION The applicant proposes to combine two parcels and build an office complex and parking lot. Currently the site is a relatively flat rural unkept area with mix of native and non native trees consisting primarily of black walnuts, four small valley oaks, trees of heaven, black locust, acacia, and several large eucalyptus. This report is to address all the protected trees on the site and make recommendations with regards to the proposed improvements. ASSIGNMENT Per the City of Pleasanton's Tree Protection Ordinance 17.16.050 - 070, regarding tree assessment & protection during construction, this report shall include the following information. I. Provide a survey of all trees on or overhanging the site with trunk diameters of 6" and larger at 4.5' above grade. II. Tag and assess all trees for their current condition, and retain-ability. Rate each tree for suitability for preservation as good, moderate, or poor, based on age, health, structure combined with potential impacts from proposed development. III. Note as whether the trees are of °Heritage" status (over 17" D.B.H, or 35' in height). IV. Provide recommendations for protection of those trees suitable for preservation. V. Provide an appraised value of those tree selected for preservation. SUMMARY Based on tree condition, species sensitivity, and proposed encroachment, it is my opinion that 13 of 48 trees can be retained. These are to include the 8 mature eucalyptus, 1 black walnut, and 3 valley oaks located along the northeast property line, and 1 valley oak at the southeast corner of the property. Other than one 8" valley oak in good condition, no other native oaks are to be removed. Of the 35 trees being removed, all but one are in fair to poor condition. ASSUMPTIONS 8< LIMITATIONS The following report is based on the topographic survey by Bunton Clifford Associates, and the Site Draft by JMH Weiss, Inc. dated 10-26-06. It was assumed that the tree locations, proposed building and hardscape locations were accurately surveyed. Based on my site visit on 3/1/07, I measured and adjusted the approximated driplines on the site plan enclosed. All trees were visually assessed from the ground for health and structure. Due to the size and complexity of the eucalyptus trees proposed for preservation, and evidence of John C Traverso, Consulting Arborist -1-