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Home My WebLink AboutTR_Arborist_Report_250515_v1 SouthFork Tree Service Consulting Arborist & Independent Susie Zderic, PN-9169A PO Box 968 Monroe WA 98272 425-330-9948 Suzyq0130@gmail.com To: Rupinder Singh Job Site: XXX 102nd Ave SE Renton 98055 Parcel: 322305-9028 Subject: Tree Inventory & Retention Plan Date: 5/15/2025 From: Suzanne Zderic, ISA Certified Arborist #PN-9169A, Qualified Tree Risk Assessor, Certified Master Gardner, Certified Natural Yard Care Mentor, Urban & Community Tree Steward, Saluting Branches Regional Logistics Coordinator & Site Leader Assignment This report is provided to address the City of Renton’s requirements for a tree inventory report for developing properties. Please see the accompanying tree evaluation data spreadsheet and tree map for reference to this report. 1.0 Site Description The lot is .78 gross acres, 34,021SF and is located East of HWY 167 and North of S 200th St. The property is oriented North/South and is lightly wooded with Douglas Fir and Big Leaf Maple. Subject Trees – Seven (7) Douglas Fir (Pseudotsuga menziesii) Twelve (12) Big Leaf Maple (Acer macrophyllum) 2.0 Tree Inventory – Methods and results I conducted visual evaluations of all the trees according to ISA standards and based upon many years conducting such evaluations on trees in the Pacific Northwest. I observed trees up close to inspect conditions of the trunk and from afar to inspect conditions in the crowns. All assessments were conducted according to the methods specified in the ISA Tree Risk Assessment Manual (Dunster, Julian A., E. Thomas Smiley, Nelda Matheny, and Sharon Lily. 2013. Tree Risk Assessment Manual. Champaign, Illinois: International Society of Arboriculture) and on nearly 10 years’ experience conducting such evaluations. The investigations involved the gathering of the following information: Tree Species Trunk diameter Crown spread diameter. Location factors Health and condition notes (general level of vigor, defects, disease or pest problems) There are 19 trees on the property, 751-756,758,761-764, CL1-CL7 (clusters of maples) and 10 off property,757-760, O-1 to O-7. 3.0 Tree Retention and Protection 4.0 Tree Retention and Protection as required by Renton The City of Renton requires as per section 4-4-130H-10. 10. Protection Measures During Construction: Protection measures in this subsection shall apply for all trees that are to be retained on site and off site. Off-site trees containing drip lines that encroach onto the site under construction shall be considered protected trees unless the applicant obtains written permission from the abutting property owner to remove the off-site trees and it is determined that the tree removal on the abutting property is in compliance with subsection C of this Section, Allowed Tree Removal Activities. All of the following tree protection measures shall apply: a. Temporary Tree Protection Fencing: Prior to development activities, the applicant shall erect and maintain a six-foot (6') high, post-driven, chain-link temporary construction fence around the drip lines of all retained trees, or if a tree protection tract or easement is provided, along the perimeter of the tree protection tract or easement. The temporary tree protection fencing shall be installed with steel posts driven at a depth that will adequately ensure the fence remains in an upright position for the duration of the development. The temporary tree protection fencing shall not be disturbed, removed, or relocated until the conclusion of construction activities. Protected trees may be fenced individually or in groups of trees. Individual trees shall be fenced on four (4) sides. If some tree or vegetation removal is necessary in order to gain access to retained trees for the purposes of installing temporary tree protection fencing, the applicant shall submit a phased tree removal plan for review and approval by the Administrator, prior to all development activities. b. Tree Protection Signage: Signage shall be placed on the tree protection fencing at intervals of no more than twenty feet (20') along the entirety of the protective tree fence. The sign(s) shall be designed, constructed, and installed in accordance with official specifications provided by the Administrator and shall convey the information deemed necessary by the Administrator. c. Construction Storage Prohibited: The applicant may not fill, excavate, stack, or store any equipment, dispose of any materials, supplies or fluids, operate any equipment, or compact the earth in any way within the area defined by the drip line of any tree to be retained. d. Protection From Grade Changes: If the grade level adjoining to a tree to be retained is to be raised, the applicant shall construct a dry rock wall or rock well around the tree. The diameter of this wall or well must be equal to the tree drip line. e. Impervious Surfaces Prohibited Within the Drip Line: The applicant may not install impervious surface material within the area defined by the drip line of any tree to be retained, unless otherwise approved by the City. (Ord. 5958, 12-9-2019) f. Utilities Prohibited Within the Drip Line: The applicant may not install utilities within the area defined by the drip line of any tree to be retained, unless otherwise approved by the City. g. Restrictions on Grading Within the Drip Lines of Retained Trees: The grade level around any tree to be retained may not be lowered within the greater of the following areas: (i) the area defined by the drip line of the tree, or (ii) an area around the tree equal to one and one-half feet (1-1/2') in diameter for each one inch (1") of tree caliper. A larger tree protection zone based on tree size, species, soil, or other conditions may be required. (Ord. 5676, 12-32012) h. Vegetation and Undergrowth Protection: With the exception of invasive species removal which has received prior written approval from the City, removal of the existing vegetation within the drip line of protected trees is prohibited during development activities. Native understory trees, shrubs, and other vegetation shall be protected within the designated tree protection area for the duration of the development activities. All areas within the required fencing shall be covered evenly with a minimum of three inches (3") of bark mulch prior to installation of the protective fencing, except in areas where mulch will adversely affect protected ground cover plants. (Ord. 5676, 12-3-2012) i. Monitoring Required During Construction: For all protected trees required to be retained in compliance with a land use decision, the applicant shall retain an ISA certified arborist or ASCA certified consultant to ensure trees are protected from development activities and/or to prune branches and roots, fertilize, and water as appropriate for any trees and ground cover that are to be retained. The ISA certified arborist or ASCA certified consultant shall supervise the installation of any required tree protection fencing, permanent or temporary. j. Alternative Protection: Alternative safeguards may be used if determined by the Administrator that such safeguards would provide equal or greater tree protection. (Ord. 5676, 12-3-2012; Ord. 5841, 6-12-2017) 5.0 Impact Assessment and Recommendations Tree protection fencing may be required for the retained trees. As an added protection, 56 inches of mulch/arborist chips should be placed within the tree protection area for added soil compaction protection and moisture absorption. If necessary, several trees may require pruning for machine clearance. Using proper pruning cuts as prescribed by the best management practices presented by the International Society of Arboriculture, to remove dead wood and overextended branches. Pruning of several branches will raise the canopy 10-15 feet without removal of the trees and keep construction equipment and buildings clear of the overhanging branches. 6.0 Use of This Report and Limitations This report is provided to address the City of Renton requirements for tree inventory and retention plans for developing lots. Natural decline and failure of trees following development is not predictable, therefore Suzanne Zderic, Consulting Arborist SouthFork Tree Service cannot be held liable for retained trees that die or fail prior to or following development of the property. Sincerely, Suzanne Zderic ISA Certified Arborist, Qualified Tree Risk Assessor, # PN-9169A 6. APPENDIX A – SITE DESCRIPTION & APPENDIX B Tree 751 , remove 752, remove Tree 753 754 Base of Tree 754, remove. Tree 757 right 758 left, remove Trees 759-763 Front View 759-763 Tree XX, remove Various clusters of Maples labeled CL1-CL7, remove More clusters of Maples labeled CL1-CL7, remove