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3217 Arbolado, Camphor Assessment, & Appraisal <br />large vertical (14" X 4") wound on the west side of the trunk. <br />The walnut is located in a 4' X 8' cutout of the city sidewalk. Removal of existing curb <br />and gutter, and the re-construction of a new driveway approach will occur 11' east of <br />the trunk (4' outside the dripline). Although the English Walnut has poor tolerance to <br />root encroachment (Trees & Development, Matheny & Clark) the encroachment should <br />be minor and not effect tree health. However, it is my opinion that this would be a good <br />time to improve soil conditions and replace the tree with a more suitable species (crepe <br />myrtle, hedge maple, Chinese pistache). <br />Recommendations <br />• Unless the driveway to the west, and the lane to the south can be pulled back an <br />additional 10' from the trunk of the pecan, this tree will have to be removed. <br />• Leave existing handscape around pear to protect roots from construction activities. <br />• Apply a 3~" layer of mulch over the accessible root zone area of the pear to prevent <br />soil compaction, and cleanly prune any roots that may be encountered during the <br />grading for the new driveway. . <br />• Irrigate pear every 2-3 weeks to a depth of 10" throughout construction. <br />• I recommend removing the English Walnut (#3), and replacing with a suitable <br />sidewalk tree. <br />APPRAISED VALUES <br />The following appraisals were arrived at using the Trunk Fom-ula Method. This method <br />is used for larger trees that can not be readily replaced by equal sized specimens. <br />The figures below were calculated using worksheets formatted from the 9"' Edition of <br />the Guide for Plant Appraisal written by the Council OF Tree & Landscape Appraisers, <br />and the Species Classification and Group Assignment Guide written by the Western <br />Chapter of the International Society of Arboriculture. See worksheets attached <br />Appraisals <br />n R H =Trunk diameter (rD 4.5' above grade <br />Tree # Species Basic Value Species condition location Appraised <br /> rating rating rating value <br />#1 Carya illinoensis, $11,735.01 70% 81°k 77% $5,100.00 <br /> "Pecan" (18" DBH) <br />Page 3 of 4 <br />