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Home My WebLink AboutTR_Arborist_Report_250507_v1 TREE INVENTORY AND PROJECT NARATIVE Prepared For Eva Lin For Service At 204 Bremerton Avenue Southeast Renton, WA Salish Sea Tree Care and Consulting 1315 Willow St. Sumner, WA 98390 Phone: (206) 819-1294 Email: salishseatree@gmail.com Table of Contents WHY A TREE INVENTORY AND CONDITION ASSESSMENT WAS CONDUCTED .................................................... 1 HOW DATA WAS COLLECTED AND ANALYZED ..................................................................................................... 1 TREE INVENTORY ................................................................................................................................................. 2 PROPOSED TREE REMOVAL ................................................................................................................................. 5 APPENDIX ............................................................................................................................................................ 8 Assumptions and Limiting Conditions ............................................................................................................. 8 204 Bremerton Avenue Southeast | Tree Inventory and Project Narrative | Page 1 of 8 Salish Sea Tree Care and Consulting 1315 Willow St. Sumner, WA 98390 Phone: (206) 819-1294 Email: salishseatree@gmail.com WHY A TREE INVENTORY AND CONDITION ASSESSMENT WAS CONDUCTED You would like to remove one Dougals fir (Pseudotsuga menziesii) located near the back of your home at 204 Bremerton Avenue Southeast, Renton, WA. You were asked by the City of Renton to provide an inventory of the trees onsite along with a project narrative. On April 14th 2025 you retained Salish Sea Tree Care and Consulting to provide a report containing a Project Narrative and a Tree Retention/Land Clearing (Tree Inventory) Plan consistent with RMC 4-9-195. HOW DATA WAS COLLECTED AND ANALYZED We visited the site on April 24th, 2025, to inventory the trees onsite and collect site data. The tools used for the assessments were: • A diameter tape • A cellular phone • Visual observation • Notepad The data collected consisted of: • Genus and species • Tree diameter • Condition • Description and Notes Inventoried trees were assigned unique and sequential identification numbers one – seven for the purpose of this report. Tree Credits were determined by using the table shown in RMC4-4-130.H.1.b. Trees that straddle the property boundary or were suspected of being offsite were not included in tree credit calculation. Diameter of tree stems straddling a property boundary or that were suspected of being offsite were estimated. Diameter at Standard Height (DSH) of trees onsite were measured with a diameter tape at four and a half feet above grade and rounded to the nearest half inch. For multi-stem trees, aggregate DSH was calculated using the following formula: DSH = (√d12+ d22+ d32+ d42). Where d1, d2, etc., are each stem’s DSH value. The resulting value was rounded to the nearest half inch. 204 Bremerton Avenue Southeast | Tree Inventory and Project Narrative | Page 2 of 8 Salish Sea Tree Care and Consulting 1315 Willow St. Sumner, WA 98390 Phone: (206) 819-1294 Email: salishseatree@gmail.com Tree condition was assessed using the criteria below: • Excellent – High vigor and nearly perfect health with little or no twig defects or discoloration. Nearly ideal and free of defects. Generally symmetric and consistent with intended use. • Good – Vigor is normal for the species. No significant damage due to disease or pests. Only minor twig defects or discoloration. Minor asymmetry from species norm. Function and aesthetics are not compromised. • Fair – Reduced vigor. Damage from insects or disease may be significant but is not likely to be fatal. Twig defects, damage and discoloration may comprise fifty percent of the crown. A single defect of significant nature or multiple moderate defects are present and not practical to correct or would require multiple treatments to correct. • Poor – Poor vigor. Unhealthy and declining appearance. Low foliage density and poor color. Potentially fatal pests or diseases. Extensive defects, damage and discoloration of twigs. Singular or multiple structural defects. Recent changes in tree orientation. Structural defects that cannot be corrected. A structural failure is expected. Appearance is asymmetric or abnormal and detracts from the intended use or aesthetics significantly. • Very Poor – Vigor is poor. Appears to be dying. Singular or multiple severe defects. A structural failure is probable or imminent. Visually unappealing provides little or no function in the landscape. • Dead – Little to no indication of life. TREE INVENTORY Seven trees in total were inventoried and assessed. I suspect two of the trees are boundary trees or located offsite. Tree 1, and Engelmann spruce (Picea engelmannii) may be outside of your property boundary. Tree 6, a Western redcedar (Thuja plicata) appears to straddle your southern property boundary and may be a boundary tree shared by two properties. There were five trees identified as being within your property boundary, three Douglas fir, one red maple (Acer rubrum) and one crab apple (Malus spp.) One Douglas fir and the red maple are considered Landmark Trees, two Douglas fir are considered Significant Trees, and the crab apple was considered to be a New Small Species Tree. 204 Bremerton Avenue Southeast | Tree Inventory and Project Narrative | Page 3 of 8 Salish Sea Tree Care and Consulting 1315 Willow St. Sumner, WA 98390 Phone: (206) 819-1294 Email: salishseatree@gmail.com Table 1. Tree inventory data table. Tree ID Genus and species Common name DBH (Inches) Condition / Viability Retain Tree Credits Description / Notes 1 Picea engelmannii Engelmann spruce 15 (Estimated) Poor / Uncertain Yes N/A Beetle exit holes were observed from low on stem to high in canopy along with resinous discharge. Suspected to be located offsite. 2 Pseudotsuga menziesii Douglas fir 6 Fair / Viable Yes 4 Suppressed tree, asymmetrical canopy. 3 Pseudotsuga menziesii Douglas fir 10.5 Fair / Viable Yes 5 Suppressed tree, asymmetrical canopy. 4 Pseudotsuga menziesii Douglas fir 35.5 Poor / Uncertain No 12 Half of the canopy was recently removed. The tree is exhibiting signs of stress including a heavy cone crop and thinning canopy. Douglas-fir beetle (Dendroctonus pseudotsugae) activity observed on stem. 5 Acer rubrum Red maple 33.5 Fair / Viable Yes 12 Three codominant stems with poor attachments and overextended branches. 6 Thuja plicata Western redcedar 15.5 (Estimated) Fair / Viable Yes N/A Three codominant stems are poorly attached to each other. Tree appears to straddle property line (Boundary tree.) 7 Malus spp. Crab Apple 5.5 Good / Viable Yes .25 Codominant stems. 204 Bremerton Avenue Southeast | Tree Inventory and Project Narrative | Page 4 of 8 Salish Sea Tree Care and Consulting 1315 Willow St. Sumner, WA 98390 Phone: (206) 819-1294 Email: salishseatree@gmail.com Figure 1. Site map with relevant critical areas layer. Tree 2 Tree 3 Tree 4 Tree 5 Tree 7 Tree 1 Tree 6 204 Bremerton Avenue Southeast | Tree Inventory and Project Narrative | Page 5 of 8 Salish Sea Tree Care and Consulting 1315 Willow St. Sumner, WA 98390 Phone: (206) 819-1294 Email: salishseatree@gmail.com PROPOSED TREE REMOVAL You would like to remove Tree 4, a Douglas fir that is considered a Landmark Tree. This tree is on or at the top edge of a fifteen – twenty-five-degree slope. The stem of this tree is growing within inches of your deck which has been altered to accommodate it’s root flair. Prior to the purchase of your home, a significant portion of this tree’s lower canopy was removed. I estimate the canopy loss from the pruning to be greater than fifty percent of the vegetative foliage. The remaining canopy of the tree is abnormally thin, a sign of stress and often Douglas fir beetle (Dendroctonus pseudotsugae) activity. Douglas fir beetle exit holes were observed on the main stem of the tree and their galleries on a failed branch found near the base of the tree. Figure 2. Douglas fir beetle activity observed on failed branch. The excessive pruning has caused this tree a great deal of stress and it appears to be in an early state of decline and attack by Douglas fir beetle. It is unclear if supportive treatments such as supplemental irrigation, fertilizer, insecticides and pheromone deterrents would be effective in preserving the tree. Douglas fir beetle activity 204 Bremerton Avenue Southeast | Tree Inventory and Project Narrative | Page 6 of 8 Salish Sea Tree Care and Consulting 1315 Willow St. Sumner, WA 98390 Phone: (206) 819-1294 Email: salishseatree@gmail.com Figure 3. Tree 4 canopy loss and remaining canopy. Thinning Canopy Recently Removed Canopy 204 Bremerton Avenue Southeast | Tree Inventory and Project Narrative | Page 7 of 8 Salish Sea Tree Care and Consulting 1315 Willow St. Sumner, WA 98390 Phone: (206) 819-1294 Email: salishseatree@gmail.com RECOMMENDATIONS If Tree 4 is removed, it will increase light and wind exposure to Tree 2 and 3. I recommend annual monitoring of these trees by a qualified arborist for a period of five years following the removal. I also recommend annually installing MCH Bubble Capsules to the stems of your Douglas fir on April 1st to dissuade further Douglas fir beetle activity onsite. I recommend pruning Tree 5 with the objective of reducing the likelihood of stem failure from the poor stem attachments at the base by utilizing branch removal and reduction cuts to remove fifteen – twenty percent of the vegetative foliage located over the roadway. I recommend applying one reduction cut to each of the outer two stems of Tree 6, removing four feet in height with the objective of reducing the likelihood of stem failure. The central stem should be preserved and left untouched. You may need to receive permission from your neighbor to the south to alter this tree in any way. I also recommend annual monitoring of this tree by a qualified arborist. I appreciate the opportunity to provide you with information about your trees. Please do not hesitate to let me know if you have any questions or if we can be of further assistance. Thank you so much, Nicholas Johnson | Salish Sea Tree Care and Consulting ASCA Registered Consulting Arborist #827, Tree and Plant Appraisal Qualified ISA Board Certified Master Arborist #PN-5662BM, Tree Risk Assessment Qualified Washington State Pesticide Applicator # 110551 Phone: 206-819-1294| Email: salishseatree@gmail.com | Website: salishseatree.com 204 Bremerton Avenue Southeast | Tree Inventory and Project Narrative | Page 8 of 8 Salish Sea Tree Care and Consulting 1315 Willow St. Sumner, WA 98390 Phone: (206) 819-1294 Email: salishseatree@gmail.com APPENDIX Assumptions and Limiting Conditions • Legal descriptions provided to Salish Sea Tree Care and Consulting by the client are assumed to be correct. • Salish Sea Tree Care and Consulting will take care in obtaining data from reliable sources but cannot be held responsible for erroneous information provided by outside sources. • Salish Sea Tree Care and Consulting shall not be required to give testimony or attend court or any other meeting, public or private, by reason of a provided report unless subsequent contractual arrangements are made, including payment of additional fees. • Loss or alteration of any part of a report invalidates the entire report. • Reports in part or in whole prepared by Salish Sea Tree Care and Consulting will not be shared without the prior expressed written or verbal consent. • Opinions and assessments provided by Salish Sea Tree Care and Consulting are not contingent on any outcome. • Figures, photographs, and maps provided by Salish Sea Tree Care and Consulting are intended as visual aids, are not to scale and should not be construed as engineering or architectural reports or surveys. • Only conditions that were present at the time of inspection and were able to be visually observed were considered.