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HomeMy WebLinkAboutTR_Arborist_Report_Greystoke_LLC_180406_v1.pdfLane & Associates Landscape Architecture 13802 26`ft Avenue NW Tulalip, WA 9827 425 885-2319 Arborist Report Lane and Associates was contacted by Jim Howton and was asked to compile an `Arborist Report' for a site located at the North East corner of ME 12th Street and Harrington Avenue N.E. within the City of Renton. Date of Field Examination: January 25th, 2017 This report encompasses all of the criteria set forth under City of Renton code section 4-4-130. The tree retention requirement is 30% of significant trees. Description 6 significant trees were identified and assessed on the property. These are comprised of a mix of native species and planted ornamental species. According to City of Renton code, a significant tree is a "tree with a caliper of at least six inches (6"), or an alder or cottonwood tree with a caliper of at least eight inches (8"). Trees qualified as dangerous shall not be considered significant. Trees planted within the most recent ten (10) years shall qualify as significant trees, regardless of the actual caliper." Each tree in this report was visited. Tree diameters were measured by tape. Each tree was visually examined for defects and vigor. The tree assessment procedure involves the examination of many factors: • The crown of the tree is examined for current vigor. This is comprised of inspecting the crown (foliage, buds and branches) for color, density, form, and annual shoot growth, limb dieback and disease. The percentage of live crown is estimated for coniferous species only and scored appropriately. • The bole or main stem of the tree is inspected for decay, which includes cavities, wounds, fruiting bodies of decay (conks or mushrooms), seams, insects, bleeding, callus development, broken or dead tops, structural defects and unnatural leans. Structural defects include crooks, forks with V-shaped crotches, multiple attachments, and excessive sweep. • The root collar and roots are inspected for the presence of decay, insects and/or damage, as well as if they have been injured, undermined or exposed, or original grade has been altered. A `viable' tree is "A significant tree that a qualified professional has determined to be in good health, with a low risk of failure due to structural defects, is wind firm if isolated or remains as part of a grove, and is a species that is suitable for its location. " Trees considered `non-viable' are trees that are in poor condition due to disease, age related decline, have significant decay issues and/or cumulative structural defects, which exacerbate failure potential. Tree Retention Calculation A total of 6 significant trees were identified on the subject property. Two of the significant trees are in poor condition. These two non-viable trees were not included in the tree calculation. Landmark trees and tree groves were prioritized when selecting trees for retention, per the City of Renton tree code 4-4-130. Note: See `Tree Map' Tree Calculation based on 4, healthy, viable, Significant trees Viable Trees proposed for removal —1 (25%) Viable Trees proposed for retention — 3 (75%) Tree Type Removal Retained Total Landmark # 0 0 0 Landmark % 100% 100% 100% Significant # 1 3 4 Significant % 25% 75% 100% Total # 1 3 4 Total % 25% 75% 100% Tree Replacement Replacements trees are not required as more than 30% are being retained. Submitted by: Bruce Cameron Lane Landscape Architect There is no warranty suggested for any of the trees subject to this report. h M�,]Vy LV14 / Pit# r/ 6PNvljvN ly- y ----� le' N.E. 13TH STREET ecor-s f / �ranox �w�mi'PErt xrNmn w `�ws�4&r i I orw _ q i I fT • c \ W IB r E f \oao I .f ��"•�V ^• �.� 4.038 SF ,}•enD•Y•, �2.097 SF •�4ts5 "� " - 2.182 SF - EASEYvt • (� L gar ..F_ \ I CT C \ 10 N I o :: � c �-� • . 3 ...� 2.493 SF 2.088 SF' w ; Lu 1.878 SF 1.818 SF ' f > :x3r• k 1,678 SF I 1 ix, r gar .1100 1 .�... \ 12. EN s w�r$t ds .......... . NA R 9ENtQl1 .'w.'. .._..`w•w .`.--•-.•N:E.:I27kLSTREE7.:.:.:.:.:...:.:.. . ss �f E � IRMOLE EAG 3.,•1.24 'A f� 8!K 318 23 8'CONC a v-350.24 (WCMC-" i v WI+3 �ir�nc-h 1 ifsqZ4 7 KV- I A Mums