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Home My WebLink AboutEx 09_Arborist Report.pdf 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 TO: ADF Properties, LLC Attn: Dale Fonk 15007 Woodinville Redmond Rd #A Woodinville WA 98072 REFERENCE: Arborist Report SITE ADDRESS: 4409 NE Sunset Blvd, Renton WA DATE: April 2, 2018 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. My assignment is to assess and report my findings for regulated 2 trees at the above referenced site. You provided me a site plan prepared by AHBL showing the locations of two onsite trees at the west project boundary. I visited the site last week and visually inspected the trees (shown on the attached exhibit), which are the subject of this report. SUMMARY: No. 1 2 DBH 29" 27" Species Douglas-fir Douglas-fir Dripline 18' radius 17' radius Health 1 - Good 1 - Good Structure 1 - Good 1 - Good Form 1 - Good 1 - Good Visible Defects None visible None visible Tree Category Significant Significant Proposed Action Remove for Proposed Site Improvements Viable Tree Yes Yes Tree Type Evergreen Evergreen Attn: Dale Fonk, ADF Properties, LLC RE: Arborist Report, 4409 NE Sunset Blvd, Renton WA April 2, 2018 Page 2 of 7 Greenforest Registered Consulting Arborist The subject parcel is 35,496 SF in size. It is currently vacant, and cleared of most existing understory and ground cover vegetation. The subject trees are both native evergreen conifer species. 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. 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, structure and form. A tree’s structure/form 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. 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. 1 Companion publication to the ANSI A300 Part 9: Tree Shrub and Other woody Plant Management – Standard Practices, Tree Risk Assessment. 2011. ISA. Attn: Dale Fonk, ADF Properties, LLC RE: Arborist Report, 4409 NE Sunset Blvd, Renton WA April 2, 2018 Page 3 of 7 Greenforest Registered Consulting Arborist 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 following information for each tree is summarized in the preceding table. DBH Stem (trunk) diameter in inches 4.5 feet from grade. Tree Species Common name. Dripline Average branch extension in feet as radius from the trunk. Health, Structure & Form Rating ‘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 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 poor condition; significant visible problems or defects and tree removal is recommended. Visible Defects No obvious structural defects or diseases are visible at time of this inspection. 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. (Multiple-stemmed trees are reported as the average using a single integer.) 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 2 Companion publication to the ANSI A300 Part 5: Tree Shrub and Other woody Plant Maintenance – Standard Practices, Managing Trees During Construction. 2008. ISA. Attn: Dale Fonk, ADF Properties, LLC RE: Arborist Report, 4409 NE Sunset Blvd, Renton WA April 2, 2018 Page 4 of 7 Greenforest Registered Consulting Arborist not be considered significant. Trees planted within the most recent ten (10) years shall qualify as significant trees, regardless of the actual caliper. Proposed Action both trees are proposed for removal because of proposed site improvements. Viability - a determination by the arborist whether the tree is viable for retention. Type indicates if tree is Deciduous (D) or Evergreen (E). REASON(S) FOR ANY TREE REMOVAL Removal is recommended for both subject trees because of proposed site improvements. IMPACT OF NECESSARY TREE REMOVAL Both subject trees stand at the western project boundary. The center of the parcel is cleared. These trees are protected from prevailing winds by offsite trees on the west-abutting parcel. The offsite trees form a contiguous canopy, and they appear to have normal trunk taper. The removal of both subject trees will not increase or change prevailing wind loads on the neighboring trees. It is my opinion that the removal of the two subject trees will have no impact on any trees that remain. Attachments: 1. Assumptions and Limiting Conditions 2. Certification of Performance 3. Site Exhibit Attn: Dale Fonk, ADF Properties, LLC RE: Arborist Report, 4409 NE Sunset Blvd, Renton WA April 2, 2018 Page 5 of 7 Greenforest Registered Consulting Arborist Attachment No. 1 - Assumptions & Limiting Conditions 1. A field examination of the site was made 3/27/2018. 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. Attn: Dale Fonk, ADF Properties, LLC RE: Arborist Report, 4409 NE Sunset Blvd, Renton WA April 2, 2018 Page 6 of 7 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: April 2, 2018 14"FIR 16"FIR 24"FIR 12"FIR 20"FIR 16"FIR 30"FIR 16"FIR CATCH BASINRIM 400.1312" CONC SW 397.30 IE177.5 LF SANITARY SEWER MANHOLE RIM 396.32 8" PVC S 393.35 IE 8" PVC SE 393.38 IE 8" PVC N 393.27 IE 303.5 L F ROCK E R Y ROCK E R Y ROCKERY GUARD RAIL - - - - - GUAR D R AI L 5' HOG WIRE FENCEGate 6' CY C L O N E F E N C E LS PV LS LS LS - CURB DROP SIDE W A L K 48" P o pl a r 24" FIR 24" CEDAR 30" Fir 18" MAPLE 30" FIR CATCH BASINRIM 398.8012" CONC NE 394.86 IE12" CONC N 394.84 IE12" CONC SW 394.91 IE SANITARY SEWERMANHOLERIM 400.4312" CONC NE 388.08 IE8" PVC S 388.91 IE12" CONC SW 388.08 IE CATCH BASIN RIM 399.93 12" CONC NE 395.33 IE 12" CONC SW 395.21 IE SANITARY SEWER MANHOLE RIM 398.25 12" CONC NE 386.00 IE 12" CONC SW 385.95 IE SANITARY SEWERMANHOLERIM 400.7112" CONC NE 388.80IE12" CONC SW 388.61IE - > SB SIGNAL BOX SB TV EXISTI N G S T R E A M N63°57'27"E 1423.14' (M)1423.21' (ST)595.07' (C)595.10' (ST)S26°02'33"E 45.00' FOUND INVERTED NAIL IN CONCRETE POST, INCASED 48" CMP CULVERT 389.11 IE 8" CONCRETE CULVERT 393.56 IE 48" CMP CULVERT 388.97 IE 48" CMP CULVERT 388.89 IE 20' SEWER EASEMENT21" FIR NE SUNSET BLVDREMOVE EXISTINGSIDEWALK AND CURBALONG PROJECTFRONTAGE REMOVE EXISTING GUARD RAIL REMOVE EXISTINGDRIVEWAY APPROACHAND ASPHALTCONCRETE APRONREMOVEEXISTINGGUARD RAIL REMOVE EXISTING DRIVEWAY APPROACH AND ASPHALT CONCRETE APRON REMOVE EXISTING DRIVEWAY APPROACH AND ASPHALT CONCRETE APRON REMOVE EXISTING ASPHALT CONCRETE REMOVE EXISTING 21" FIR PROTECT EXISTING FENCE DURING CONSTRUCTIONPROTECT EXISTING FENCE DURING CONSTRUCTION PROVIDE CONSTRUCTION FENCE AROUND TREE DRIPLINE TO PROTECT DURING CONSTRUCTION PROVIDE CONSTRUCTION FENCE AROUND TREE DRIPLINE TO PROTECT DURING CONSTRUCTION REMOVE EXISTING 24" FIR 2' NEAT LINESAWCUT (TYP.) REMOVE SIDEWALK TO NEAREST JOINT CLEARING LIMITS (TYP.) CLEARING LIMITS (TYP.) CLEARING LIMITS (TYP.) N63° 5 7' 2 7 " E 184.4 5'N0° 00' 25"E174.68'S0° 15' 59"W256.71'N89° 37' 58"W 164.55' LOCATION OF SEWER OVERBUILD, SEE SEWER SHEET C4.1 LOCATION OF SEWER OVERBUILD, SEE SEWER SHEET C4.1 REMOVE EXISTING SEWER BETWEEN NEW SANITARY SEWER STRUCTURES CITY OF RENTONPPP-SS-TTTTSUNSET HIGHLANDSSUNSET HIGHLANDSCivil Engineers Structural Engineers Landscape Architects Community Planners Land Surveyors Neighbors T A C O M A 2215 North 30th Street, Suite 300 Tacoma, WA 98403 253.383.2422TEL 253.383.2572FAX www.ahbl.comWEB S E A T T L E S P O K A N E T R I-C I T I E S Checked for Compliance to City Standards Q:\2014\2140679\10_CIV\CAD\2140679_SH_TREE.dwgA 21-INCH FIR ON THE WEST SIDE AND A 24" FIR IN THESOUTHWEST CORNER OF THE SITE WILL BE REMOVED. NOOTHER SIGNIFICANT TREES WILL BE REMOVED AS PART OFTHIS PROPOSED PROJECT.TREE CLEARING NOTES: TREE CLEARING AND DEMOLITION PLAN NGRAPHIC SCALE020 401" = 20 FEET10