18 ATTACHMENT 09 - Laserfiche WebLink

Preliminary Arborisl Report.Ponderosa Homes HortScience,Inc. Valley Trails.Pleasanton Page 6 Table 2: Tree suitability for preservation,continued. Valley Trails,Pleasanton CA. Low Trees in this category are in poor health or have significant defects in structure that cannot be abated with treatment. These trees can be expected to decline regardless of management. Two(2)of the trees was of low suitability for preservation. Tree No. Species Diameter (in.) 229 Coast redwood 14 232 Coast redwood 16 Evaluation of Impacts and Recommendations for Action Appropriate tree retention develops a practical match between the location and intensity of construction activities and the quality and health of trees. The tree assessment was the reference points for tree condition and quality. Impacts from the proposed project were assessed using the Site Plan prepared by MIA Associates(dated March 31,2015). The plan proposes to construct 43 new residential units on the site. The existing church building, parking lot and landscaping would be demolished. The existing entry location on Valley Trails Drive would be retained and connected to a new circular, interior road. Lot'A'would remain undeveloped and includes a 10'wide strip along the southern boundary and a small flag-shaped lot in the southeast corner adjacent to the park. The plan was preliminary in nature and potential impacts from construction were estimated for each tree,given the project information available to date. The plan included lot,road and entry layouts, set-back information and tree canopies. Grading,utilities,drainage and accurate trunk locations were not included on the plans. Precise impacts will have to be determined once trees have been located and plotted,and the plans are finalized. The most significant impacts to trees would be associated with demolition of existing building and parking lot and raising of grades. However,several trees were located within set-backs or just off- site along the peripheries,providing opportunities for tree preservation in these areas. Based on my evaluation of the plans,removal would be required for 12 of the trees,all of which would fall within the lot grading. Two(2)of the trees identified for removal qualified as Heritage, including#231 and 246. Table 3(following page)provides the recommended action for each tree, reason for removal,and their Heritage status. Thirteen(13)trees can be preserved,including four(4)Heentage trees(#234.244,245 and 247). provided the design recommendations listed in the Tree Preservation Guidelines(see page 9) can be accomodated. All of the trees identified for preservation were either on the property line or off-site. Two of the off-site trees,#245 and 247.have portions of their canoplues extending over the fence and onto the development site. Some pruning to reduce the overhanging canopy will be required and is expected to be within the tolerance of the trees. Any pruning of off-site trees should be performed with the property owner's permission.