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HomeMy WebLinkAboutEx_07_Arborist_Report Greenforest Incorporated C o n s u l t i n g A r b o r i s t greenforestinc@mindspring.com Tel. 206-723-0656 TO: Robert P. Wenzl Tuscany construction, LLC PO Box 2170 Renton WA 98059 REFERENCE: Day Short Plat Arborist Report DATE ISSUED: December 10, 2021 PREPARED BY: Favero Greenforest, ISA Certified Arborist # PN -0143A ISA Tree Risk Assessment Qualified ASCA Registered Consulting Arborist® #379 You contacted me and contracted my services as a consulting arborist. I visited the above referenced site July 14 & 15, 2021. My assignment is to inspect the regulated trees. The purpose of this report is to establish the condition of the significant trees to satisfy City of Renton permit submittal requirements. You provided me a topographic survey prepared by Core Design, Inc., showing the locations of the existing site features and the regulated trees. SUMMARY The following table summarizes the tree quantities and categories inventoried in this report. Significant, Landmark and Dangerous categories are defined by municipal code. Attributes and tree condition ratings are provided in attachment 3. Regulated Trees 224 Excluded Trees 111 Difference 113 Total Retained Trees 14 Replacement Trees 120 Exhibit 7 DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 2 of 23 Greenforest Registered Consulting Arborist LIMITATIONS AND USE OF THIS REPORT This tree report establishes, via the most practical means available, the existing conditions of the trees on the subject property. Ratings for health and structure, as well as any recommendations are valid only through the development and construction process. This report is based solely on what is readily visible and observable, without any invasive means. There are several conditions that can affect a tree’s condition that may be pre-existing and unable to be ascertained with a visual-only analysis. No attempt was made to determine the presence of hidden or concealed conditions which may contribute to the risk or failure potential of trees on the site. These conditions include root and stem (trunk) rot, internal cracks, structural defects or construction damage to roots, which may be hidden beneath the soil. Additionally, construction and post-construction circumstances can cause a relatively rapid deterioration of a tree’s condition. IDENTIFICATION SCHEME Each tree was marked with a 1” x 3.5” aluminum tag indicating tree number as listed on the attached inventory, and as shown on the attached exhibit. SPECIES AND SIZE OF EACH TREE I measured the trunk diameter (54” from grade) of each tree, and identified each tree by common name. TREE INSPECTION METHOD – TREE HEALTH, CONDITION AND VIABILITY I visually inspected each tree from the ground. I performed a Level 1 risk assessment.1 This is the standard assessment for populations of trees near specified targets, conducted in order to identify obvious defects or specified conditions such as a pre-development inventory. This is a limited visual assessment focuses on identifying trees with imminent and/or probable likelihood of failure, and/or other visible conditions that will affect tree retention. I recorded tree species and size (DBH). I estimated the average dripline of each tree. I rated the condition of each tree, both health and structure. A tree’s structure is distinct from its health. This inspection identifies what is visible with both. High-risk trees can appear healthy in that they can have a dense, green canopy. This may occur when there is sufficient sapwood or adventitious roots present to maintain tree health, but inadequate strength for structural support. 1 Companion publication to the ANSI A300 Part 9: Tree Shrub and Other woody Plant Management – Standard Practices, Tree Risk Assessment. 2011. ISA. DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 3 of 23 Greenforest Registered Consulting Arborist Conversely, trees in poor health may or may not be structurally stable. For example, tree decline due to root disease is likely to cause the tree to be structurally unstable, while decline due to drought or insect attack may not. One way that tree health and structure are linked is that healthy trees are more capable of compensating for structural defects. A healthy tree can develop adaptive growth that adds strength to parts weakened by decay, cracks, and wounds. This report identifies unhealthy trees based on existing health conditions and tree structure, and specifies which trees are most suitable for preservation.2 No invasive procedures were performed on any trees. The results of this inspection are based on what was visible at the time of the inspection. The attached inventory summarizes my inspection results and provides the following information for each tree: ROW indicates trees to be removed because of location within a right-of-way. Critical Area trees are indicated in this column. Remove or Retain indicates trees proposed for removal for improved improvements, or certain trees to be retained. Remove Unhealthy indicates trees proposed for removal because of poor condition. Tree Category as defined by municipal code. (TREE: A woody perennial usually having one dominant trunk, or, for certain species, a multi-stemmed trunk system, with a potential minimum height of ten feet (10') at maturity. Any trees listed on the Complete King County Weed List shall not qualify as a 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 licensed landscape architect, or certified arborist. Landmark: A tree with a caliper of thirty inches (30") or greater. 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"). 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. Tree number as shown on tag in the field, and on attached exhibit. DBH stem diameter in inches measured 4.5 feet from the ground. 2 Companion publication to the ANSI A300 Part 5: Tree Shrub and Other woody Plant Maintenance – Standard Practices, Managing Trees During Construction. 2008. ISA. DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 4 of 23 Greenforest Registered Consulting Arborist Tree Species common name. Dripline average branch extension from the trunk as radius in feet. Health and Structure ratings ‘1’ indicates good to excellent condition; no visible health- related problems or structural defects, ‘2’ indicates fair condition; minor visible problems or defects that may require attention if the tree is retained, and ‘3’ indicates poor condition; significant visible problems or defects and tree removal is recommended. Comments on Condition obvious structural defects or diseases visible at time of inspection, which includes: Asymmetric canopy– the tree has an asymmetric canopy from space and light competition from adjacent trees. Branch dieback - Mature branches in canopy are dying/dead. Canker - Disease cankers are established on trunk/branches. Chlorosis – Yellowing or off-color foliage. Crack – separation of wood fibers and predisposed to failure. Deadwood – Large and/or multiple dead branches throughout canopy. Decay – process of wood degradation by microorganisms resulting in weak and defective structure. Diseased – foliage and trunk/stems are diseased. Dogleg in trunk – trunk with a bow or defective bend (90°) in trunk often half way of further up the trunk. Double leader – the tree has multiple stem attachments, which may require maintenance or monitoring over time. Kretzschmaria fungus – fungal infection with interior of tree decayed. Included bark - Bark inclusion at attachment of multiple leaders and is preventing a wood-to-wood attachment Ivy - Dense ivy prevents a thorough inspection, and other defects may be present. LCR – Live crown ratio: the ratio of crown length to total tree height. Stand-alone trees with a LCR of 30 and lower are at increased risk of failure. Lean – Angle of the trunk from vertical. Multiple leaders - the tree has multiple stem attachments, which may lead to tree failure and require maintenance or monitoring over time. Poor structure – tree’s structure is deformed and defective/unsightly Previous failure – Tree trunk previously broken and defective. Slender – tree lacks adequate trunk taper to stand lone. DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 5 of 23 Greenforest Registered Consulting Arborist Thinning Canopy – low foliage density may indicate stress, or early infection/declining health. Stump sprout- Tree previously cut at grade with multiple stems and potentially weak attachments. Suppressed – tree crowded by larger adjacent trees, with defective structure and/or low vigor. Retain tree only as a grove tree, not stand-alone. Sweep – tree leans away from adjacent trees. Characterized by a leaning lower trunk and a top that is more upright. Taper - change in diameter over the length of trunks, branches and roots. Topped – the tree is previously topped and has poor structure and/or stem decay. Tree leans – Trunk has significant lean from vertical. Trunk decay - Wood decay is visible in the trunk. Twist in trunk – trunk fibers are twisted and subject to cracking in high winds. Wound/decay base of trunk - Open wound with visible decay in trunk. Limits of Disturbance (LOD) are calculated for all the significant trees (and for trees on adjoining parcels with overhanging driplines). They are listed below as radii in feet from the trunk for the side of the tree to be impacted by construction. They are determined using rootplate3 and trunk diameter,4,5,6 and ISA Best Management Practices.7 These are the minimum distances from the trees for any soil disturbance, only for a single side of the tree as a linear cut past the trunk, and assume larger protection area on the other three sides of the tree. These LOD are malleable and may be adjusted during the design and construction process. This means that they may be increased from what is reported here. Tree Type indicates if tree is deciduous (D), evergreen (E), coniferous (C) or broadleaf (B). > 60' or > 18" identifies trees larger than 60 feet tall, or greater than 18” DBH. SUBJECT TREES Nearly all are native species, and most grow in a natural wooded area or a neglected landscape. These trees have received minimal to no care or maintenance, and most have structures and/or forms typical of tight forest stand trees. 3 Coder, Kim D. 2005. Tree Biomechanics Series. University of Georgia School of Forest Resources. 4 Smiley, E. Thomas, Ph. D. Assessing the Failure Potential of Tree Roots, Shade Tree Technical Report. Bartlett Tree Research Laboratories. 5 Fite, Kelby and E. Thomas Smiley. 2009. Managing Trees During construction; Part Two. Arborist News. ISA. 6 Andrew R. Benson, Andrew Koeser, Justin Morgenroth. Responses Of Mature Roadside Trees To Root Severance Treatments. 2019. Journal of Urban Forestry & Urban Greening. 7 Companion publication to the ANSI A300 Series, Part 5: Managing Trees During Construction. 2008. ISA. DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 6 of 23 Greenforest Registered Consulting Arborist When selecting trees for retention, trees standing in groups, or with structural conditions that impact stability (slenderness, asymmetric canopies, multiple leaders) should only be retained in their current group configurations, and not as stand-alone trees or exposed as edge trees with clearing of trees currently providing wind protection and buffer. Trees categorized as ‘dangerous’ are unhealthy and/or structurally defective. I recommend these trees be removed. Visible problems include trunk decay, slender trunks (poor taper), dead and declining canopies, shoot death/decline, previous failure, suppressed form and dead/hanging branches, or the presence of Kretzschmaria fungal fruiting bodies. TREE RETENTION AND LAND CLEARING REGULATIONS 4.4.130 §H.9. Protection Measures During Construction: Protection measures in this subsection shall apply for all trees that are to be retained. All of the following tree protection measures shall apply: a. Construction Storage Prohibited: The applicant may not fill, excavate, stack or store any equipment, dispose of any materials, supplies or fluids, operate any equipment, install impervious surfaces, or compact the earth in any way within the area defined by the drip line of any tree to be retained. b. Fenced Protection Area Required: Prior to development activities, the applicant shall erect and maintain six-foot (6') high chain link temporary construction fencing around the drip lines of all retained trees or at a distance surrounding the tree equal to one and one-quarter feet (1.25') for every one inch (1") of trunk caliper, whichever is greater, or along the perimeter of a tree protection tract. Placards shall be placed on fencing every fifty feet (50') indicating the words, “NO TRESPASSING – Protected Trees,” or on each side of the fencing if less than fifty feet (50'). Site access to individually protected trees or groups of trees shall be fenced and signed. Individual trees shall be fenced on four (4) sides. In addition, the applicant shall provide supervision whenever equipment or trucks are moving near trees. c. 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’s drip line. d. 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. e. 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, 12-3-2012) DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 7 of 23 Greenforest Registered Consulting Arborist f. Mulch Layer Required: All areas within the required fencing shall be covered completely and evenly with a minimum of three inches (3") of bark mulch prior to installation of the protective fencing. Exceptions may be approved if the mulch will adversely affect protected ground cover plants. (Ord. 5676, 12-3-2012) g. Monitoring Required during Construction: The applicant shall retain a certified arborist or licensed landscape architect 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. h. Alternative Protection: Alternative safeguards may be used if determined to provide equal or greater tree protection. (Ord. 5676, 12-3-2012) Attachments: 1. Assumptions and Limiting Conditions 2. Certification of Performance 3. Significant Tree Inventory 4. Tree Retention Worksheet 5. Tree Retention Exhibit DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 8 of 23 Greenforest Registered Consulting Arborist Attachment No. 1 - Assumptions & Limiting Conditions 1. A field examination of the site was made 7/15/2021. 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 sheets with those growing in the field. 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. DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 9 of 23 Greenforest Registered Consulting Arborist Attachment No. 2 - Certification of Performance I, Favero Greenforest, certify that: • I have personally inspected the trees and the property referred to in this report and have stated my findings accurately. • I have no current or prospective interest in the vegetation or the property that is the subject of this report and have no personal interest or bias with respect to the parties involved. • The analysis, opinion, and conclusions stated herein are my own and are based on current scientific procedures and facts. • My analysis, opinion, and conclusions were developed and this report has been prepared according to commonly accepted arboricultural practices. • No one provided significant professional assistance to me, except as indicated within the report. • My compensation is not contingent upon the reporting of a predetermined conclusion that favors the cause of the client of any other party nor upon the results of the assessment, the attainment of stipulated results, or the occurrence of any subsequent events. I further certify that I am a member in good standing of International Society of Arboriculture (ISA), and the ISA PNW Chapter, I am an ISA Certified Arborist (#PN-0143A) and am Tree Risk Assessment Qualified, and am a Registered Consulting Arborist® (#379) with American Society of Consulting Arborists. I have worked as an independent consulting arborist since 1989. Signed: GREENFOREST, Inc. By Favero Greenforest, M. S. Date: December 10, 2021 Favero Greenforest Digitally signed by Favero Greenforest DN: cn=Favero Greenforest, o, ou, email=greenforestinc@mindspring.co m, c=US Date: 2021.12.10 13:44:53 -08'00' DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 10 of 23 Greenforest Registered Consulting Arborist Dripline radius from center of tree Condition ratings ‘1’ good to excellent, ‘2’ fair, ‘3’ poor LOD as radius in feet from center of tree, see text in report body Type indicates if tree is Deciduous (D), Evergreen (E), broadleaf (B) and coniferous (C) Attachment No. 3 Significant Tree Inventory R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" Rem Sig. 8129 10 Apple 16 2 2 Diseased, mal-pruned 6 BD X Danger. 8130 32 Doug-fir 30 1 3 Topped, multiple leaders, failure, ivy 16 CE Y X Danger. 8131 9 Apple 20 3 3 Diseased, dogleg in trunk, decay 6 BD Y Sig. 8132 10 Blue spruce 15 1 2 Asymmetric canopy, sweep in trunk 6 CE Y Sig. 8133 9 Blue spruce 14 1 2 Asymmetric, dogleg 6 CE Y Sig. 8134 14 Blue spruce 16 1 2 Asymmetric, double leader, ivy 7 CE Y Sig. 8135 10 Blue spruce 14 1 2 Asymmetric 6 CE Y Sig. 8136 15 Blue spruce 14 1 2 Asymmetric, ivy covering trunk 8 CE Y Y Sig. 8137 18,26 Bigleaf maple 30 1 2 Double leader, dense ivy on trunk 16 BD Y Y Land. 8141 35 Bigleaf maple 40 1 1 17.5 BD Y Ret Sig. 8148 16 Doug-fir 19 1 1 8 CE Y X Danger. 8154 6,8,10 Bigleaf maple 25 2 3 Decline, decay, multiple leaders 7 BD Rem Sig. 8155 7 Bigleaf maple 18 1 2 Asymmetric 6 BD Rem Sig. 8156 8 Bigleaf maple 10 1 2 Asymmetric, slender trunk 6 BD Rem Sig. 8157 12 Bigleaf maple 14 1 2 Rib on trunk 6 BD Rem Sig. 8158 12 Bigleaf maple 14 1 2 Asymmetric, slender 6 BD Rem Sig. 8159 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 11 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" Rem Sig. 8160 7 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8161 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8162 10 Bigleaf maple 12 1 2 Asymmetric, slender 6 BD Rem Sig. 8163 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8164 10 Bigleaf maple 12 1 2 Asymmetric, slender 6 BD Ret Sig. 8165 8 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Ret Sig. 8166 7 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Ret Sig. 8167 13 Bigleaf maple 16 1 2 Asymmetric, slender 7 BD Ret Sig. 8170 7 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Land. 8172 42 Doug-fir 30 1 2 Ivy 21 CE Y Rem Land. 8173 42 Doug-fir 30 1 2 Ivy 22 CE Y Ret Sig. 8174 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Ret Sig. 8175 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8176 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8177 7 Bigleaf maple 10 1 2 Asymmetric, slender, ivy 6 BD Rem Sig. 8178 6 Bigleaf maple 10 1 2 Asymmetric, slender, ivy 6 BD Y Land. 8182 50 Bigleaf maple 45 1 2 Asymmetric, deadwood, ivy 24 BD Y X Danger. 8183 18, 22 Bigleaf maple 25 2 3 Decline, asymmetric, double leader, seam in trunk 15.5 BD Y X Danger. 8185 10 Bigleaf maple 0 3 3 Dead 6 BD Y Sig. 8186 18 Bigleaf maple 30 1 2 Asymmetric 9 BD Y Y Sig. 8187 14 Bigleaf maple 16 1 2 Slender, low LCR 7 BD DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 12 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" Y Sig. 8188 21 Bigleaf maple 35 2 2 Decline, asymmetric, seam 11 BD Y X Danger. 8189 18 Bigleaf maple 25 3 3 Decline, decay, deadwood, asymmetric 9 BD Y X Danger. 8190 7 Plum 10 3 3 Disease, decay, decline 6 BD Y Sig. 8191 14, 20 Bigleaf maple 30 2 2 Decline, double leader 12 BD Y X Danger. 8192 9 Bigleaf maple 0 3 3 Dead 6 BD Y Sig. 8193 18, 18 Bigleaf maple 30 2 2 Decline, double leader 14 BD Y X Danger. 8194 15 Bigleaf maple 30 2 3 Decline, previous failure decay 8 BD Y X Danger. 8196 7 Plum 10 3 3 Disease, decay, decline 6 BD Rem Sig. 8199 10 Black cottonwood 16 1 2 Asymmetric 6 BD Rem Land. 8200 40 Black cottonwood 45 1 1 20 BD Y Rem Sig. 8201 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8202 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8203 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8204 8 Bigleaf maple 12 1 2 LCR, slender, ivy 6 BD Rem Sig. 8205 7 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8206 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8207 10 Bigleaf maple 12 1 2 Asymmetric, slender 6 BD Rem Sig. 8208 10 Bigleaf maple 12 1 2 Asymmetric, slender 6 BD Rem Sig. 8209 6 Bitter cherry 10 1 2 Dead branches 6 BD Rem Sig. 8210 8 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8211 12 Bigleaf maple 14 1 2 Asymmetric, slender 6 BD DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 13 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" Rem Sig. 8213 13 Bigleaf maple 16 1 2 Asymmetric, slender 7 BD Rem Sig. 8214 8 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8215 28 Bigleaf maple 40 1 2 Ivy 14 BD Y Rem Sig. 8217 26, 28 Bigleaf maple 45 1 2 Previous failure, double leader, ivy 19 BD Y Ret Sig. 8219 21 Bigleaf maple 30 1 2 Double leader, asymmetric, ivy 11 BD Y Rem Land. 8220 36 Black cottonwood 35 2 2 Dense ivy, slime flux 18 BD Y X Danger. 8221 22, 24 Bigleaf maple 30 2 3 Decline, decay, deadwood, ivy, double leader 16.5 BD Y Rem Land. 8222 35 Doug-fir 30 1 1 17.5 CE Y Ret Land. 8224 36 Doug-fir 30 1 1 18 CE Y Ret Sig. 8225 10 Bigleaf maple 25 1 2 Asymmetric, canopy over a abutting parcel 6 BD X Danger. 8226 14, 16 Bigleaf maple 20 3 2 Decline, double leader, dense ivy, bark inclusion 12 BD X Danger. 8227 20,22 Bigleaf maple 35 1 3 Double leader, decay, Kretzschmaria 15.5 BD Y Rem Sig. 8228 27 Bigleaf maple 30 1 2 Dense ivy 14 BD Y Rem Sig. 8229 24 Black cottonwood 35 1 2 Dense ivy 12 BD Y Rem Sig. 8230 21 Bigleaf maple 35 2 2 Decline, slender, ivy 11 BD Y X Danger. 8232 25 Bigleaf maple 20 3 3 Decline, asymmetric, dense ivy 13 BD Y X Danger. 8233 16 Bigleaf maple 18 3 3 Decline, LCR, slender, dense ivy 8 BD Y X Danger. 8234 25 Bigleaf maple 20 3 3 Decline, asymmetric, dense ivy 13 BD Y X Danger. 8235 20 Bigleaf maple 16 3 3 Decline, slender, lean, ivy 10 BD Y X Danger. 8237 10 Bigleaf maple 15 3 3 Decline, dense ivy 6 BD DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 14 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" X Danger. 8239 7 Bitter cherry 20 3 3 Suppressed, diseased, ivy 6 BD X Danger. 8240 32 Bigleaf maple 20 3 2 Decline, deadwood, double leader, ivy 16 BD Y Rem Land. 8241 40 Doug-fir 30 1 2 Dense ivy 20 CE Y Rem Sig. 8242 6 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Rem Sig. 8243 8 Bigleaf maple 10 1 2 Asymmetric, slender 6 BD Y Land. 8247 38 Doug-fir 25 1 2 Deadwood, ivy 19 CE Y X Danger. 8248 14 Bigleaf maple 16 3 3 Decline, dense ivy, stump sprout 7 BD X Danger. 8249 32 Bigleaf maple 45 3 2 Decline, deadwood, multiple leaders 16 BD Y Y Sig. 8251 21 Bigleaf maple 25 1 2 Dogleg, slender 11 BD Y Rem Sig. 8252 14 Bigleaf maple 25 2 2 Suppressed, dogwood, asymmetric 7 BD Rem Sig. 8253 22 Bigleaf maple 20 2 2 Decline, slender, ivy 11 BD Y Rem Sig. 8254 20 Bigleaf maple 20 2 2 Decline, slender, ivy 10 BD Y Rem Land. 8255 38 Doug-fir 25 1 2 Ivy 19 CE Y X Danger. 8257 22 Bigleaf maple 35 1 3 Previous failure, decay, dense ivy 11 BD Y X Danger. 8260 22, 24 Bigleaf maple 30 1 3 Decay, double leader, bark inclusion 16.5 BD Y Ret Sig. 8261 17 Doug-fir 18 1 2 Double leader 9 CE Y Ret Sig. 8264 16 Doug-fir 18 1 2 Asymmetric 8 CE Y Rem Land. 8265 38 Doug-fir 35 1 1 19 CE Y X Danger. 8266 25 Bigleaf maple 30 3 3 Decline, nearly dead 13 BD Y Rem Sig. 8267 22 Western red-cedar 18 1 1 11 CE Y Rem Sig. 8269 10 Doug-fir 16 1 2 Dogleg 6 CE DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 15 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" X Danger. 8270 23 Bigleaf maple 23 3 3 Decline, decay, Kretzschmaria 12 BD Y Rem Land. 8271 31 Doug-fir 25 1 1 15.5 CE Y X Danger. 8272 26 Bigleaf maple 30 3 3 Decline, decay, dead 13 BD Y X Danger. 8273 13 Western hemlock 0 3 3 Dead 7 CE Rem Sig. 8274 25 Doug-fir 20 2 1 Thin canopy 13 CE Y Y Sig. 8275 9 Red alder 20 1 2 Dogleg, asymmetric 6 BD Rem Land. 8276 31 Doug-fir 25 1 1 15.5 CE Y Y Sig. 8277 26 Bigleaf maple 40 2 1 Decline 13 BD Y Y Sig. 8279 8 Bigleaf maple 18 1 2 Slender, asymmetric 6 BD Y Sig. 8280 23 Bigleaf maple 40 2 2 Decline, decay, multiple leaders 12 BD Y Y Sig. 8282 14,14,18,20 Bigleaf maple 40 1 2 Deadwood, stumpsprout, multiple leaders 17 BD Y Y Sig. 8283 19 Bigleaf maple 30 1 2 Asymmetric 10 BD Y Y Sig. 8284 8 Bitter cherry 12 1 2 Slender 6 BD Rem Sig. 8286 24, 24 Bigleaf maple 50 1 2 Double leader 17 BD Y Rem Sig. 8287 9 Bigleaf maple 18 1 2 Asymmetric, sweep 6 BD Rem Sig. 8288 22 Bigleaf maple 40 1 1 11 BD Y Rem Sig. 8289 23 Doug-fir 20 1 1 12 CE Y Rem Land. 8290 44 Doug-fir 30 1 1 22 CE Y Rem Sig. 8291 25 Western red-cedar 18 1 1 13 CE Y Rem Sig. 8292 12 Red alder 14 1 2 Asymmetric, sweep 6 BD X Danger. 8293 22 Red alder 18 3 2 Decline, asymmetric, sweep 11 BD Y DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 16 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" Rem Sig. 8294 11 Bigleaf maple 18 1 2 Asymmetric, slender 6 BD X Danger. 8295 18 Red alder 20 3 2 Decline, deadwood, nearly dead 9 BD Y X Danger. 8296 24 Bigleaf maple 25 3 3 Decline, asymmetric, seam 12 BD Y X Danger. 8297 22 Bigleaf maple 20 3 1 Decline, asymmetric 11 BD Y X Danger. 8298 20 Bigleaf maple 25 3 3 Decline, LCR, slender 10 BD Y Rem Sig. 8300 23 Doug-fir 21 1 2 Asymmetric 12 CE Y Y Sig. 8301 28 Bigleaf maple 45 1 1 14 BD Y Rem Sig. 8305 18 Bigleaf maple 35 1 2 Asymmetric 9 BD Y X Danger. 8306 (4) 6-28 Bigleaf maple 40 1 3 Decay, Multiple leaders 22 BD Y Rem Land. 8307 31 Doug-fir 25 1 2 Sweep, perched on sloped shoulder 15.5 CE Y X Danger. 8308 9 Bigleaf maple 16 1 3 Asymmetric, dogleg, perched on slope shoulder 6 BD X Danger. 8309 17 Bigleaf maple 8 3 3 Sweep, nearly dead 9 BD Y X Danger. 8312 12 Bigleaf maple 18 3 3 Decline, deadwood, slender 6 BD X Danger. 8313 8 Bigleaf maple 0 3 3 Dead 6 BD Rem Sig. 8314 9 Bigleaf maple 18 1 2 Asymmetric, slender 6 BD X Danger. 8315 6 Bigleaf maple 6 3 3 Nearly dead 6 BD X Danger. 8316 27 Western hemlock 20 3 3 Decline, asymmetric, seam, soil filled over rootplate 14 CE Y Ret Land. 8318 33 Doug-fir 25 1 2 Soil filled over rootplate 16.5 CE Y Rem Sig. 8322 8 Bigleaf maple 18 1 2 Asymmetric, seam 6 BD Rem Sig. 8326 6 Bigleaf maple 18 1 2 Asymmetric, slender 6 BD DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 17 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" X Danger. 8330 6 Bigleaf maple 20 1 3 Asymmetric, sweep 6 BD Rem Sig. 8336 22 Doug-fir 18 1 2 Asymmetric 11 CE Y X Danger. 8337 8 Bigleaf maple 16 3 2 Decline, asymmetric, slender 6 BD Rem Sig. 8338 11 Black cottonwood 20 1 2 Slender, sweep 6 BD Y Rem Sig. 8339 11 Black cottonwood 16 1 2 Slender, ivy 6 BD Y X Danger. 8341 8 Doug-fir 10 3 3 Suppressed, dense ivy, LCR 6 CE Ret Sig. 8342 9 Doug-fir 16 1 2 Dogleg 6 CE X Danger. 8344 10 Red alder 16 3 3 Decline, asymmetric, sweep 6 BD Y Sig. 8345 8 Bigleaf maple 16 1 2 Asymmetric, slender 6 BD Y Sig. 8346 6 Bigleaf maple 16 1 2 Asymmetric, slender 6 BD Rem Sig. 8347 14 Doug-fir 16 1 1 7 CE Rem Sig. 8352 10 Bigleaf maple 16 1 2 Decay, slender 6 BD Rem Sig. 8353 7 Bigleaf maple 16 1 2 Asymmetric, slender 6 BD Rem Sig. 8354 7, 6 Bigleaf maple 16 1 2 Asymmetric, slender, double leader 6 BD Rem Sig. 8356 8 Doug-fir 14 1 2 Asymmetric, slender 6 CE Rem Sig. 8357 20 Black cottonwood 25 1 2 Deadwood, slender 10 BD Y X Danger. 8358 10 Doug-fir 16 3 3 Decline, suppressed, asymmetric, sweep 6 CE Rem Sig. 8359 12 Doug-fir 16 1 2 Asymmetric 6 CE Rem Sig. 8360 15 Doug-fir 16 1 2 Asymmetric 8 CE Y X Danger. 8361 9 Bitter cherry 14 3 3 Diseased, suppressed, asymmetric 6 BD X Danger. 8363 9 Doug-fir 14 3 3 Suppressed, asymmetric, ivy 6 CE DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 18 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" X Danger. 8364 9 Doug-fir 14 3 3 Suppressed, asymmetric, ivy 6 CE Rem Sig. 8365 7, 13 Bigleaf maple 16 1 2 Slender, LCR 7 BD Rem Sig. 8366 7, 7 Bigleaf maple 14 1 2 Slender, LCR 6 BD Rem Sig. 8367 6 Bigleaf maple 12 1 2 Slender, LCR 6 BD Rem Sig. 8368 11 Bigleaf maple 14 1 2 Slender, LCR 6 BD Rem Sig. 8369 9 Bigleaf maple 12 1 2 Slender, LCR 6 BD Rem Sig. 8370 7 Bigleaf maple 12 1 2 Slender, LCR 6 BD Rem Sig. 8371 8 Bigleaf maple 12 1 2 Slender, LCR 6 BD Rem Sig. 8373 8 Bigleaf maple 12 1 2 Slender, LCR 6 BD Rem Sig. 8374 6 Bigleaf maple 12 1 2 Slender, LCR 6 BD Rem Sig. 8375 6 Bigleaf maple 12 1 2 Slender, LCR 6 BD Rem Sig. 8376 9 Red alder 14 1 2 Slender, LCR 6 BD Rem Sig. 8378 8,7 Bigleaf maple 14 1 2 Slender, LCR 6 BD Rem Sig. 8379 9 Bigleaf maple 12 1 2 Slender, LCR 6 BD Rem Sig. 8381 8, 14, 26, 28 Bigleaf maple 50 2 2 Old age, multiple leaders 20 BD Y Rem Sig. 8382 11 Black cottonwood 18 1 2 Slender 6 BD Y Rem Sig. 8384 7 Bigleaf maple 18 1 2 Asymmetric, slender, sweep 6 BD Rem Sig. 8385 8 Bigleaf maple 18 1 2 Slender, stump sprout 6 BD Y Sig. 8386 20 Black cottonwood 25 1 2 Slender 10 BD Y Y Sig. 8387 16 Black cottonwood 20 1 2 Slender 8 BD Y Y Sig. 8388 20 Black cottonwood 25 1 2 Slender 10 BD Y DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 19 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" Y Sig. 8390 10 Bigleaf maple 18 1 2 Asymmetric, ivy 6 BD Y Sig. 8391 12 Red alder 18 2 2 Asymmetric, decline 6 BD X Danger. 8392 10 Red alder 0 3 3 Dead 6 BD X Danger. 8393 8 Red alder 0 3 3 Dead 6 BD Y Sig. 8395 10, 26 Black cottonwood 30 1 1 15 BD Y Y Sig. 8396 8 Red alder 18 2 2 Decline, slender 6 BD Y Sig. 8397 10 Red alder 18 2 2 Decline, slender 6 BD X Danger. 8403 24 Black cottonwood 12 3 3 Previous failure, decay 12 BD Y Y Sig. 8404 8, 11 Bigleaf maple 25 2 2 Decline, double leader, injury from cottonwood failure 6 BD X Danger. 8405 9 Red alder 0 3 3 Dead 6 BD X Danger. 8406 8 Red alder 0 3 3 Dead 6 BD Y Sig. 8407 22 Black cottonwood 25 1 2 Sweep 11 BD Y X Danger. 8408 14 Red alder 16 3 3 Decline, sweep, decay 7 BD X Danger. 8409 7 Doug-fir 12 3 3 Suppressed, sweep, asymmetric 6 CE Y Sig. 8411 26 Western red-cedar 20 1 1 14 CE Y X Danger. 8412 10 Bitter cherry 0 3 3 Dead 6 BD X Danger. 8413 6 Bigleaf maple 18 3 3 Decline, asymmetric, lean 6 BD X Danger. 8415 40 Black cottonwood 25 3 3 Previous failure, trunk decay 20 BD Y Rem Sig. 8416 10, 12 Bigleaf maple 25 1 2 Asymmetric, double leader, stumpsprout 7 BD Y Sig. 8417 25 Bigleaf maple 40 1 1 13 BD Y DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 20 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" Y Sig. 8418 18 Western red-cedar 18 1 1 9 CE Y Y Sig. 8419 22 Bigleaf maple 35 1 1 11 BD Y Y Sig. 8420 25 Doug-fir 20 1 1 13 CE Y X Danger. 8421 10, 6, 7, 16, 21 Bigleaf maple 45 2 3 Decline, decay, Kretzschmaria, multiple leaders 15 BD Y X Danger. 8422 10, 11 Bigleaf maple 20 2 3 Seam, stumpsprout, bark inclusion 7 BD Y Sig. 8423 15 Black cottonwood 30 1 2 Asymmetric, slender 8 BD Y X Danger. 8424 7 Black cottonwood 0 3 3 Dead 6 BD Y Sig. 8425 28 Black cottonwood 35 1 1 14 BD Y Rem Sig. 8426 11 Bigleaf maple 14 1 2 LCR, slender, sweep 6 BD Rem Sig. 8427 6 Bigleaf maple 18 1 2 Asymmetric, slender 6 BD Y Sig. 8428 10 Doug-fir 16 2 1 Suppressed 6 CE Y Sig. 8429 8 Red alder 14 1 2 Slender, sweep 6 BD X Danger. 8430 8,9 Red alder 20 2 3 Decay, double leader, bark inclusion 6 BD X Danger. 8431 11, 11, 11 Bigleaf maple 35 1 3 Asymmetric, stumpsprout, multiple leaders, decay, bark inclusion 8 BD Rem Sig. 8432 7 Bigleaf maple 16 1 2 Asymmetric, slender 6 BD Rem Sig. 8990 22 Black cottonwood 25 1 2 Sweep 11 BD Y Y Sig. 8991 10 Black cottonwood 18 2 2 Disease, bow 6 BD Y Sig. 8992 9 Red alder 14 2 2 Decline, sweep 6 BD Y Sig. A 9 Blue spruce 14 2 2 Suppressed, asymmetric 6 CE X Danger. B 12 Bigleaf maple 6 3 3 Crack, decay, previous failure, ivy 6 BD DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP, Arborist Report December 10, 2021 Page 21 of 23 Greenforest Registered Consulting Arborist R.O.W. Critical Area Remove or Retain Remove Unhealthy Regulated Category Tree No. DBH Species Dripline (R') Health Rating Structure Rating Comment on Condition LOD (R') Tree Type > 60' or > 18" Rem Sig. C 6 Bigleaf maple 16 1 2 Asymmetric, slender 6 BD OFFSITE TREES Sig. 8145 9 Madrone 18 1 2 Sweep, canopy completely overhangs abutting parcel 6 BE Sig. 8179 7 Cryptomeria 7 1 1 6 CE Sig. 8281 7 Bigleaf maple 16 1 2 Asymmetric 6 BD Sig. 8323 10 Bigleaf maple 20 1 2 Stump sprout 6 BD Dang. 8410 9 Red alder 14 3 3 Decline, asymmetric, slender 6 BD DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 224 64 36 0 11 111 113 34 14 20 240 2 120 Robert P. Wenzl, Tuscany construction, LLC RE: Day SP Arborist Report December 9, 2021 Page 22 of 23 Attachment No. 4 Tree Retention Worksheet DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26 116TH AVE SESE 186TH STSE 186TH STABCTREE RETENTION EXHIBIT DAY SHORT PLAT, CITY OF RENTONNOTE: EXHIBIT IS CONCEPTUAL IN NATURE AND IS SUBJECT TO CHANGE. NOT FOR CONSTRUCTION.DESIGN20'0'40'SCALE 1" = 40'20'0'40'SCALE 1" = 40'DECEMBER 10, 2021J:\2019\19003\LANDSCAPE\PRELIMINARY\X19003 TRWETLAND BUFFER LINE;ALL TREES WITHIN TO BE RETAINED.TREES WITHIN NGPA TO RETAIN (TYP.)PROPERTY LINE (TYP.)OFF-SITE TREE (TYP.)EXISTING SIGNIFICANT TREETO REMOVE (TYP.)TREES WITHIN R.O.W. TOREMOVE (TYP.)EXISTING SIGNIFICANT TREETO REMAIN (TYP.)LIMIT OF DISTURBANCE (TYP.)DRIPLINE (TYP.)EXISTING LANDMARKTREE TO REMAIN (TYP.)UNHEALTHY TREE TOREMOVE (TYP.)INSIGNIFICANT TREE (TYP.)EXISTING LANDMARK TREE TOREMOVE (TYP.)CLEARING LIMITS (TYP.)UNHEALTHY TREE (TYP.)TOTAL VIABLE ON-SITE TREES: 113 (SEE TREE RETENTION WORKSHEET)REQUIRED NUMBER OF TREES TO RETAIN: 34 (30% WITHIN R-4 ZONE)PROVIDED NUMBER OF TREES TO RETAIN: 14 (41%)REQUIRED NUMBER OF REPLACEMENT TREES: 120 (SEE TREE RETENTION WORKSHEET)TREE RETENTION SUMMARYTREE RETENTION SUMMARYEXISTING SIGNIFICANT TREES TO REMAINEXISTING LANDMARK TREES TO REMAINEXISTING SIGNIFICANT TREES TO REMOVEEXISTING LANDMARK TREES TO REMOVEEXISTING TREES WITHIN R.O.W. TO REMOVEEXISTING SIGNIFICANT TREES TO REMAINUNHEALTHY TREE (TO REMOVE)Robert P. Wenzl, Tuscany construction, LLC RE: Day SP Arborist Report December 9, 2021 Page 23 of 23 Attachment No. 5 Tree Retention Exhibit DocuSign Envelope ID: 8349A775-7CD5-48E8-9101-6CAB65879B26