18 ATTACHMENT 09 - Laserfiche WebLink

Arborist Report Revised February 1.2017. Hort Science, Inc. The Village at Valley Trails. Ponderosa Homes Page 1 Introduction and Overview Ponderosa Homes is proposing to redevelop the Valley Trails Church site, located on Valley Trails Dr, in Pleasanton CA. Current site use consists of the church,a parking lot and landscaping in the southwest corner of the site and an open field on the remainder. Ponderosa Homes requested that HortScience, Inc prepare an Arborist Report for the site. This report provides the following information: This report provides the following information: 1 An evaluation of the health and structural condition of the trees within the proposed project area based on a visual inspection from the ground. 2. An assessment of the development impacts to the trees based on the drawings provided by Ponderosa Homes. 3. Guidelines for tree preservation during the design,construction and maintenance phases of development. 4. A Tree Assessment Form,providing a description of each tree and a Tree Assessment Map showing the location of trees by tag number. Assessment Methods Trees#223—247 were assessed on February 13, 2015;trees#248—260 in February 2017 The assessment included all trees 6"and larger in diameter,within and adjacent to the proposed project The assessment procedure consisted of the following steps: 1. Identifying the tree as to species, 2. Tagging each tree with a numerically coded metal tag and recording its location on a map: 3 Measuring the trunk diameter at a point 54"above grade: 4. Evaluating the health and structural condition using a scale of 1 —5: 5-A healthy,vigorous tree, reasonably free of signs and symptoms of disease,with good structure and form typical of the species. 4-Tree with slight decline in vigor, small amount of twig dieback,minor structural defects that could be corrected. 3-Tree with moderate vigor, moderate twig and small branch dieback, thinning of crown,poor leaf color, moderate structural defects that might be mitigated with regular care. 2-Tree in decline,epicormic growth, extensive dieback of medium to large branches,significant structural defects that cannot be abated. -Tree in severe decline,dieback of scaffold branches and/or trunk;most of foliage from epicormics;extensive structural defects that cannot be abated. 5. Rating the suitability for preservation as"high","moderate"or"low". Suitability for preservation considers the invasiveness of the species,health, age and structural condition of the tree, and its potential to remain an asset to the site. Eleven(11)trees were located off-site but portions of canopies extended into the development site. Trees#234 and 243 may be on the property line.