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Home My WebLink AboutA_Arborist_Report_151222_V1 Greenforest Incorporated C o n s u l t i n g A r b o r i s t 4547 South Lucile Street, Seattle, WA 98118 Tel. 206-723-0656 December 21, 2015 Satwant Singh 15423 SE 272nd St., Ste. 110 Kent WA 98042 RE: Arborist Report – Grant Place Townhomes, 1600 Grant Ave S., Renton WA Dear Mr. Singh: In preparation for development of the above referenced site, you contracted my services as a consulting arborist. My assignment is to inspect certain trees proposed for retention, and assess their viability as retained trees. Project architect David Vincent provided me a Topographic Survey prepared by Tyee Surveyors, dated 7/22/15 showing the location of the surveyed trees on site (See attached). The survey was annotated to identify 11 trees proposed for retention. I visited the site 12/16/2015 and inspected the 11 trees, which are the subject of this report. TREE INSPECTION I visually inspected each tree from the ground and rated both tree health and structure. A tree’s structure is distinct from its health. This inspection identifies what is visible with both. Structure is the way the tree is put together or constructed, and identifying obvious defects can be helpful in determining if a tree is predisposed to failure. Health addresses disease and insect infestation. No invasive procedures were performed on any trees. The results of this inspection are based on what is visible at the time of the inspection. Satwant Singh RE: Arborist Report – Grant Place Townhomes, 1600 Grant Ave S., Renton WA December 21, 2015 Page 2 of 6 Greenforest Registered Consulting Arborist The table below summarizes the following information about each tree: Tree number as indicated on the attached plan. DBH Stem diameter in inches measured 4.5 feet from the ground (DBH). Tree Species Common name. Tree Category Indicates if tree is Significant1, Landmark2 or Dangerous3 Dripline Average canopy extension (radius) in feet from the trunk. Health & Structure Rating ‘1’ indicates no visible health-‐related problems or structural defects; ‘2’ indicates minor visible problems or defects that may require attention or maintenance if the tree is retained, and/or the tree should only remain as a grove tree, and not stand alone; and ‘3’ indicates significant visible problems or defects, the tree is not viable for retention and is considered Dangerous by City code. Visible Defects Obvious structural defects or diseases visible at time of inspection, which includes: Branch dieback -‐ Mature branches in canopy are dying/dead. Decay – process of wood degradation by micro-‐organisms resulting in weak and defective structure. Decline – Tree is in an obvious state of declining vigor/vitality. Double leader – the tree has multiple stem attachments, which may require maintenance or monitoring over time. Tree leans – Trunk has significant lean from vertical. Trunk decay -‐ Wood decay is visible in the trunk. 1 Tree, Significant: 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"). 2 Tree, Landmark: A tree with a caliper of thirty inches (30") or greater. 3 Tree, Dangerous: Any tree that has been certified, in a written report, as dead, terminally diseased, damaged, or otherwise dangerous to persons or property by a certified arborist. Satwant Singh RE: Arborist Report – Grant Place Townhomes, 1600 Grant Ave S., Renton WA December 21, 2015 Page 3 of 6 Greenforest Registered Consulting Arborist Tree Inventory. Tree No. DBH Species Dripline Tree Category Health Structure Visible Defects/Comments 14 12” Red alder 14’ Dangerous 3 3 Double leader with included bark, trunk cracked. 17 12” Bigleaf maple 15’ Significant 1 1 24 14" Red alder 15' Dangerous 3 3 Top of tree dead and failed, decay in trunk. Dieback of branches throughout canopy. 25 14” Red alder 12’ Dangerous 2 2 Some branch dieback in upper canopy. Double-‐trunked tree with #26. Retain only in a grove, not as a stand-‐alone tree. 26 14” Red alder 12’ Dangerous 2 2 Some branch dieback in upper canopy. Double-‐trunked tree with #26. Retain only in a grove, not as a stand-‐alone tree. 27 14” Red alder 12’ Dangerous 3 3 Advanced trunk decay. 28 14” Red alder 12’ Dangerous 3 3 Lean, trunk decay, top of tree dead/previous failure. 29 14” Red alder 12’ Dangerous 3 3 Tree top dead/broken, trunk decay. 35 16” Red alder 15’ Dangerous 3 3 Top of tree dead and failed, decay in trunk. Dieback of branches throughout canopy. 40 18” Red alder 15’ Dangerous 3 3 Top of tree dead and failed, decay in trunk. Dieback of branches throughout canopy. 44 20” Red alder 16’ Dangerous 3 3 Trunk decay, branch decline. Satwant Singh RE: Arborist Report – Grant Place Townhomes, 1600 Grant Ave S., Renton WA December 21, 2015 Page 4 of 6 Greenforest Registered Consulting Arborist Ten of the eleven subject trees are not viable for retention because of current poor or declining health and/or high risk of failure due to structural defects and previous failures. There are no treatments that can ameliorate these problems. Thank you very much for your business. Let me know if you need any additional information. Sincerely, GreenForest, Inc. By Favero Greenforest, M. S. ISA Certified Arborist # PN -‐0143A ASCA Registered Consulting Arborist® #379 ISA Tree Risk Assessment Qualified Attachments: 1. Assumptions & Limiting Conditions 2. Annotated Topographic Survey Satwant Singh RE: Arborist Report – Grant Place Townhomes, 1600 Grant Ave S., Renton WA December 21, 2015 Page 5 of 6 Greenforest Registered Consulting Arborist Attachment No. 1 -‐ Assumptions & Limiting Conditions 1. A field examination of the site was made 12/16/2015. My observations and conclusions are as of that date. 2. Care has been taken to obtain all information from reliable sources. All data has been verified insofar as possible; however, the consultant/arborist can neither guarantee nor be responsible for the accuracy of information provided by others. 3. I am not a qualified land surveyor. Reasonable care was used to match the trees indicated on the sheet with those growing on site. 4. Construction activities can significantly affect the condition of retained trees. All retained trees should be inspected after construction is completed, and then inspected regularly as part of routine maintenance. 5. Unless stated other wise: 1) information contained in this report covers only those trees that were examined and reflects the condition of those trees at the time of inspection; and 2) the inspection is limited to visual examination of the subject trees without dissection, excavation, probing, or coring. There is no warranty or guarantee, expressed or implied that problems or deficiencies of the subject tree may not arise in the future. 6. All trees possess the risk of failure. Trees can fail at any time, with or without obvious defects, and with or without applied stress. A complete evaluation of the potential for this (a) tree to fail requires excavation and examination of the base of the subject tree. Permission of the current property owner must be obtained before this work can be undertaken and the hazard evaluation completed. 7. The consultant/appraiser shall not be required to give testimony or to attend court by reason of this report unless subsequent contractual arrangements are made. 8. This report and any values/opinions expressed herein represent the opinion of the consultant/appraiser, and the consultant’s/appraiser’s fee is in no way contingent upon the reporting of a specified value, a stipulated result, the occurrence of a subsequent event, nor upon any finding to be reported. Satwant SinghRE: Arborist Report – Grant Place Townhomes, 1600 Grant Ave S., Renton WA December 21, 2015Page 6 of 6Attachment No. 2 - Annotated Topographic SurveyPROPOSED RETAINED TREES