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Home My WebLink AboutEx05_Arborist_Report Title: Murray, Smith & Associates, Inc., - Kennydale 320 Zone Reservoir Project Level 2, Basic Tree Assessment Renton, Washington Prepared for: Murray, Smith & Associates, Inc. Attn: Jenna Anderson 601 Union St, Suite 622 Seattle, WA 98101 Prepared by: Urban Forestry Services, Inc. Mr. Paul H. Thompson ASCA Registered Consulting Arborist #509 ISA Certified Arborist® #PN-1838A ISA Tree Risk Assessment Qualified Date: November 2, 2016 CONTENTS: Summary Introduction Findings and Recommendations Method of Assessment Tree Assessment Site Plan Plan Overview Plan North Area Plan South Area Tree Assessment Matrix Definitions Critical Root Zone Explanation General Tree Protection Guidelines Assumptions and Limitations Summary Of 32 trees assessed at 1404 N 30th St., Renton, Washington, 4 trees are recommended for removal due to their poor condition, 29 trees are recommended for removal because of construction impact, and 3 trees are recommended for protection, with one located offsite and two onsite. Pruning is recommended for one of the retained trees onsite. Methods for protecting the trees are enclosed. It is also recommended that an ISA Certified Arborist® monitor the clearing and grading around the retained trees. Introduction As requested by Jenna Anderson of Murray, Smith & Associates, Inc., on October 5, 2016, I assessed 32 trees for health, condition and risk of failure in a Level 2 Basic Assessment at 1404 N 30th St., Renton, WA 98056. In addition to assessing the health, condition and risk of failure of the 32 trees, Urban Forestry Services, Inc., was asked to complete this assessment to determine the impact of EXHIBIT 5 RECEIVED Clark Close 06/25/2020 PLANNING DIVISION 30 DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E MSA / Kennydale 320 Zone Reservoir Project – Level 2, Basic Tree Assessment Urban Forestry Services, Inc. November 4, 2016 Page 2 of 4 Photo 1: A view from the southwest corner toward the north and northeast of the project area. constructing the proposed Kennydale 320 Zone Reservoir Project. Protection methods for trees that can be retained are included in this report. This site is largely an open lawn with a very gentle slope with a south aspect, that includes fruit and ornamental trees, including the invasive tree species black locust, Robinia pseudoacacia. Sixteen species were included in this assessment, with a diameter range of 3 to 27.3-inches measured at 4.5 feet above grade. Findings and Recommendations Information on the vigor, structure and defects of each tree can be found in the enclosed Tree Assessment Matrix. The Matrix also provides information on the dripline radius, tree risk assessment (risk of failure), preservation value and the radius of the Critical Root Zone (CRZ) area for each tree. The attached Tree Assessment Site Plan provides information on the approximate location of the trees and their CRZ. Specific findings and recommendations are: Remove 29 Trees  Four (4) trees are recommended for removal due to their poor condition. Details of their condition supporting this recommendation are provided in the enclosed Matrix. This includes, trees in the process of dieback and decline, sparse live crown, decay fungi present (Ganoderma species) combined with a lean, DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E MSA / Kennydale 320 Zone Reservoir Project – Level 2, Basic Tree Assessment Urban Forestry Services, Inc. November 4, 2016 Page 3 of 4 extensive cavity and decay. The trees included in this recommendation are tree #’s 4, 25, 28 and 31.  Twenty-five (25) trees are recommended for removal due to construction impact. Trees included in this recommendation are either directly impacted by clearing and grading i.e. within the footprint of a structure or hardscape such as a road or hardcourt area, or trees that outside of clearing and grading but are likely to have significant root loss or impact to their Critical Root Zone. See the enclosed Critical Root Zone Explanation. This includes tree #’s 1 - 3, 5 – 23, 26, 27, and 29 Protect and Retain 3 Trees  Two (2) trees on site shall have tree protection installed as per the enclosed General Tree Protection Guidelines.  Tree# 24: Protection should be installed a minimum of 15-feet radius east of this tree. This is within the Critical Root Zone (CRZ) of this tree, and the distance of 15-feet set in anticipation of grading, the remaining protected area should have 4-inches of wood chips installed. Any grading near this tree, including trenching, should be monitored by an ISA Certified Arborist®. Root pruning may also be required and will need to be assessed by the ISA Certified Arborist® during the grading. Clearance pruning will also be required to remove or reduce the length of branches overhanging the work area. Pruning work must be completed to ANSI A300 pruning standards, and should be completed prior to clearing and grading.  Tree# 30: Install tree protection as described within the enclosed General Tree Protection Guidelines. The CRZ radius is 13-feet.  One (1) tree is offsite and will also need to be protected as per the enclosed General Tree Protection Guidelines, including monitoring by an ISA Certified Arborist® during clearing and grading, root pruning may be required.  The offsite tree is # 32, a Douglas fir, Pseudotsuga menziesii, and is on the edge of a grove of Douglas fir trees on an adjacent property to the west, all of which should benefit from this protection. See the enclosed Tree Assessment Site Plan to locate this tree. Method of Assessment The methodology to evaluate these trees follows the criteria provided in the Tree Risk Assessment Qualification (TRAQ) training. TRAQ was developed, and is administer ed, by the International Society of Arboriculture (ISA) and follows the ISA's Best Management Practices - Tree Risk Assessment publication, and American National Standards Institute (ANSI) A300 (Part 9), Tree, Shrub, and Other Woody Plant Management - Standard Practices (Tree Risk Assessment a. Tree Structure Assessment.) The Tree Assessment Matrix that we provide in this report simplifies the reporting of our findings in laymen terms to increase the understanding of our recommendations. The Level 2 Basic Tree Assessment is a detailed visual inspection of a tree and its surrounding site, and a synthesis of the information collected. It requires that a tree risk assessor walk completely around the tree, looking at the site, buttress roots, trunk, and branches. This basic assessment may include the use of simple tools to gain additional 26 TREE # 30 NEEDS TO BE REMOVED DUE TO CONSTRUCTION IMPACT FOR NEW ACCESS ROAD ON WEST SIDE OF PROPERTY DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E MSA / Kennydale 320 Zone Reservoir Project – Level 2, Basic Tree Assessment Urban Forestry Services, Inc. November 4, 2016 Page 4 of 4 information about the tree or defects. Defects found in a Level 2 Basic Tree Assessment may require a Level 3 assessment for further testing and analysis. Tree condition is determined based on visual inspection of the above-ground portions of the trees. Of concern is trunk soundness, tree structure, bud fullness and color, twig length, crown ratio, density of leaves, evidence of disease-causing bacteria, fungi or virus, deadwood, and dead or broken hanging limbs. While no one can predict with absolute certainty which trees will fail and which trees will remain healthy, by methodical process we can predict those most likely to fail by the conditions observed and take appropriate action to reduce or eliminate the potential hazard. Each tree in this report is assigned a reference number. The reference numbers are shown on the enclosed site plan and correspond to the information in the enclosed Matrix. Let us know if you have any questions regarding this Level 2, Basic Tree Assessment. Literature Cited ISA Tree Risk Assessment Manual, Dunster, L., Smiley, T., Matheny, N., and Lilly, S. 2013 International Society of Arboriculture. ISA Best Management Practice, Tree Risk Assessment, Smiley, T., Matheny, N., and Lilly, S. 2011 International Society of Arboriculture. DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Site Plan (Overview) Kennydale 320 Zone Reservoir Project Renton, Washington October 2016 URBAN FORESTRY SERVICES, INC. 15119 McLean Road Mount Vernon, WA 98273 Assessment Area N DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Site Plan South Area Kennydale 320 Zone Reservoir Project Renton, Washington October 2016 URBAN FORESTRY SERVICES, INC. 15119 McLean Road Mount Vernon, WA 98273 N DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Site Plan North Area Kennydale 320 Zone Reservoir Project Renton, Washington October 2016 URBAN FORESTRY SERVICES, INC. 15119 McLean Road Mount Vernon, WA 98273 N DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 1 Scot's pine 23.690715 5 100%441 3.0 $57 $25090 $380 0%$0.00 Loc. Rating% Tree 1 Fair to Good12 PoorScot's pine 17.0 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Pinus sylvestris This tree has tight codominant trunks with included bark, and tight branching crossing and rubbing with poor structure. The lower trunk has been cut in two places to remove codominant trunks in the past, no decay is visible. Pitch is being produced by bark beetle activity throughout the trunk.Notes /DefectsCRZ (ft) 23.6907 155 Damage Loss % 1 Date: 7/8/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 2 Spruce 7.7 100%47 3.0 $57 $2630 0%$0.00 Loc. Rating% Tree 2 Poor to Fair11 Poor to FairSpruce7.7 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Picea species This tree is suppressed by the adjacent pine. I noticed a low rate of growth relative to the trees young age.Notes /DefectsCRZ (ft) 7.7 Damage Loss % 2 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 3 English holly 4.5 100%16 3.0 $72 $1116 $480 $0.00 Loc. Rating% Tree 3 Poor to Fair12 FairEnglish holly 4.5 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Ilex aquifolium The base of this tree is not accessible. Assessment was therefore completed remotely. This tree has a thin foliage density for its age and size.Notes /DefectsCRZ (ft) 4.5 Damage Loss % 3 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 4 Elm 4 100%13 3.0 $72 $876 $0.00 Loc. Rating% Tree 4 Dying/Dead14 PoorElm4.0 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value None Remove Tree Recommendations Ulmus species This tree is in the process of dieback and decline; dead codominant trunks, branching, dead foliage, sparse live crown. Removal is recommended based upon its condition. Access to the base of the tree was restricted.Notes /DefectsCRZ (ft) 4 Damage Loss % 4 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 5 Bigleaf maple 10.148398 9 100%81 3.0 $72 $5792 $480 $0.00 Loc. Rating% Tree 5 Fair to Good17 Poor to FairBigleaf maple 4.5 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Due to Construction Impact Recommendations Acer macrophyllum This is a multi-trunked bigleaf maple that has sprouted from a cut tree. If retained the number of codominant trunks will need thinning and structural pruning is required to develop a stable structure.Notes /DefectsCRZ (ft) 10.1483 989 Damage Loss % 5 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 6 Bigleaf maple 10.967679 8 100%94 3.0 $72 $6770 $480 $0.00 Loc. Rating% Tree 6 Fair to Good FairBigleaf maple 8.5 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Due to Construction Impact Recommendations Acer macrophyllum As per tree# 5.Notes /DefectsCRZ (ft) 10.9676 798 Damage Loss % 6 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 7 Bigleaf maple 5 100%20 3.0 $72 $1384 $480 $0.00 Loc. Rating% Tree 7 Fair12 Fair to GoodBigleaf maple 5.0 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Acer macrophyllum This tree is slightly suppressed and leans to the north as a result.Notes /DefectsCRZ (ft) 5 Damage Loss % 7 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 8 English hawthorn 4 100%13 3.0 $72 $876 $0.00 Loc. Rating% Tree 8 Fair to Good10 FairEnglish hawthorn 4.0 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Crataegus laevigata Access restricted, tree consists of multiple trunks.Notes /DefectsCRZ (ft) 4 Damage Loss % 8 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 9 Pear 4.0360872 1 100%13 3.0 $72 $892 $0.00 Loc. Rating% Tree 9 Fair to Good8 FairPear3.0 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Moderate Remove Tree Due to Construction Impact Recommendations Pyrus species Notes /DefectsCRZ (ft) 4.03608 721 Damage Loss % 9 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 10 European white birch 12.242957 2 100%118 3.0 $72 $8443 $480 $0.00 Loc. Rating% Tree 10 Fair to Good10 FairEuropean white 9.0 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Due to Construction Impact Recommendations Betula pendula This tree has codominant trunks with a tight arrangement and included bark. If this tree is retained one of the codominant trunks should be subordinate pruned.Notes /DefectsCRZ (ft) 12.2429 572 Damage Loss % 10 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 11 Black walnut 27.3 100%585 3.0 $72 $42095 $480 $0.00 Loc. Rating% Tree 11 Fair to Good27 Poor to FairBlack walnut 27.3 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Due to Construction Impact Recommendations Juglans nigra The main trunk of this tree contains a cavity with a decay column extending into the lower trunk. Sounding indicates that the base of this tree also contains decay. There is an injury that has been covered by new growth .Notes /DefectsCRZ (ft) 27.3 Damage Loss % 11 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 12 Honeycrisp apple 11.273420 1 100%100 3.0 $72 $7154 $0.00 Loc. Rating% Tree 12 Fair to Good16 Poor to FairHoneycrisp apple 7.2 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Malus domestica 'Honeycrisp' This tree has crossing and rubbing trunks and branches. If retained it should be pruned for structure.Notes /DefectsCRZ (ft) 11.2734 201 Damage Loss % 12 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 13 European mountain ash 5.7593402 4 100%26 3.0 $72 $1846 $480 $0.00 Loc. Rating% Tree 13 Fair7 Poor to FairEuropean mountain 2.8 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Sorbus aucuparia This tree originates from a cut tree, with poor to fair structure where the trunk sprouts join the original trunk.Notes /DefectsCRZ (ft) 5.75934 024 Damage Loss % 13 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 14 European mountain ash 10.4 100%85 3.0 $72 $6085 $480 $0.00 Loc. Rating% Tree 14 Fair to Good8 FairEuropean mountain 10.4 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Due to Construction Impact Recommendations Sorbus aucuparia This tree originates from a regenerated ash that took root in a stump which is now decayed. As a result the trunk base contains cavities and a stilted root system. The main trunk divides into two codominant trunks with a tight arrangement and included bark.Notes /DefectsCRZ (ft) 10.4 Damage Loss % 14 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 15 Black locust 14.534097 8 100%166 3.0 $72 $11911 $0.00 Loc. Rating% Tree 15 Fair to Good11 Poor to FairBlack locust 8.2 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Due to Construction Impact Recommendations Robinia pseudoacacia This tree has weak codominant trunks and branch attachments.Notes /DefectsCRZ (ft) 14.5340 978 Damage Loss % 15 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 16 Black locust 6.3442887 7 100%32 3.0 $72 $2246 $0.00 Loc. Rating% Tree 16 Fair to Good7 Poor to FairBlack locust 5.0 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Robinia pseudoacacia If retained this tree would require trunk thinning to select a standard trunk to retain.Notes /DefectsCRZ (ft) 6.34428 877 Damage Loss % 16 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 17 Black locust 10.3 100%83 3.0 $72 $5968 $0.00 Loc. Rating% Tree 17 Fair to Good6 FairBlack locust 10.3 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Robinia pseudoacacia This tree leans to the east. Monitor he tree lean if retained.Notes /DefectsCRZ (ft) 10.3 Damage Loss % 17 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 18 Black locust 7.8 100%48 3.0 $72 $3410 $0.00 Loc. Rating% Tree 18 Fair14 FairBlack locust 7.8 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Robinia pseudoacacia Notes /DefectsCRZ (ft) 7.8 Damage Loss % 18 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 19 Flowering plum form 3.8 100%11 3.0 $72 $787 $0.00 Loc. Rating% Tree 19 Fair5 Poor to FairFlowering plum 3.8 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Prunus cerisifera form This tree has poor branch structure with crossing and rubbing branches. If retained it would require structural pruning.Notes /DefectsCRZ (ft) 3.8 Damage Loss % 19 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 20 Flowering plum form 7.9 100%49 3.0 $72 $3499 $0.00 Loc. Rating% Tree 20 Fair to Good7 FairFlowering plum 7.9 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Prunus cerisifera form As per tree# 19. This tree also leans toward the southeast.Notes /DefectsCRZ (ft) 7.9 Damage Loss % 20 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 21 Black locust 20.712315 2 100%337 3.0 $72 $24218 $0.00 Loc. Rating% Tree 21 Fair to Good10 Poor to FairBlack locust 14.0 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Due to Construction Impact Recommendations Robinia pseudoacacia This tree is growing close to the property line. The tree appears to have been affected by high winds with a lean to the southwest visible. If excavation occurs within CRZ this tree should be removed.Notes /DefectsCRZ (ft) 20.7123 152 Damage Loss % 21 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 22 Black locust 12.212698 3 100%117 3.0 $72 $8401 $0.00 Loc. Rating% Tree 22 Fair to Good11 FairBlack locust 8.9 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Robinia pseudoacacia This tree overhangs and has a slightly lean to the east; the crown is comprised of three trunks. The lower trunk has an injury and scar, no decay visible.Notes /DefectsCRZ (ft) 12.2126 983 Damage Loss % 22 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 23 Black locust 24 100%452 3.0 $72 $32527 $0.00 Loc. Rating% Tree 23 Fair to Good6 FairBlack locust 24.0 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Due to Construction Impact Recommendations Robinia pseudoacacia This tree leans to the south. As per tree# 21.Notes /DefectsCRZ (ft) 24 Damage Loss % 23 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 24 European bird cherry 17.029386 4 100%228 3.0 $72 $16362 $0.00 Loc. Rating% Tree 24 Fair to Good18 Poor to FairEuropean bird 13.0 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Install Tree Protection Recommendations Prunus padus This may be a mulberry spp. Sample taken for identification. The crown of this tree is largely suppresssed by adjacent conifers and deciduous trees, it has a significant trunk bow as a result. The majority of the crown hangs over the potential construction area and work.Notes /DefectsCRZ (ft) 17.0293 864 Damage Loss % 24 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 25 Flowering plum form 17.291616 5 100%235 3.0 $72 $16871 $0.00 Loc. Rating% Tree 25 Fair to Good Poor to FairFlowering plum 13.0 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Recommendations Prunus cerisifera form This tree has a Ganoderma fungus on the lower main trunk, indicating decay is present. Due to low light levels the tree leans to the east significantly.Notes /DefectsCRZ (ft) 17.2916 165 Damage Loss % 25 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 26 Black walnut 15.1 100%179 3.0 $72 $12858 $480 $0.00 Loc. Rating% Tree 26 Fair to Good18 Fair to GoodBlack walnut 15.1 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Moderate Remove Tree Due to Construction Impact Recommendations Juglans nigra Notes /DefectsCRZ (ft) 15.1 Damage Loss % 26 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 27 Honeycrisp apple 6.8007352 5 100%36 3.0 $72 $2585 $0.00 Loc. Rating% Tree 27 Fair to Good6 Poor to FairHoneycrisp apple 5.5 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Malus domestica 'Honeycrisp' This tree leans with evidence of poor root anchorage.Notes /DefectsCRZ (ft) 6.80073 525 Damage Loss % 27 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 28 Honeycrisp apple 14.6 100%167 3.0 $72 $12019 $0.00 Loc. Rating% Tree 28 Fair14 PoorHoneycrisp apple 14.6 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value Low Remove Tree Recommendations Malus domestica 'Honeycrisp' The trunk of his tree has an extensive cavity and amount of decay.Notes /DefectsCRZ (ft) 14.6 Damage Loss % 28 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 29 Honeycrisp apple 13.8 100%149 3.0 $72 $10735 $0.00 Loc. Rating% Tree 29 Fair to Good11 Poor to FairHoneycrisp apple 13.8 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Low Remove Tree Due to Construction Impact Recommendations Malus domestica 'Honeycrisp' The trunk of this tree contains extensive decay, with cavity pockets indicating a column of decay.Notes /DefectsCRZ (ft) 13.8 Damage Loss % 29 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 30 Western larch 11 100%95 3.0 $57 $5491 $480 $0.00 Loc. Rating% Tree 30 Fair to Good14 Fair to GoodWestern larch 11.0 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Moderate Install Tree Protection Recommendations Larix occidentalis Notes /DefectsCRZ (ft) 11 Damage Loss % 30 Date: 10/5/2016 11/2/2016 Field Work Completed: REMOVE TREE DUE TO CONSTRUCTION IMPACT DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 31 Willow 19.906280 4 100%311 3.0 $72 $22368 $480 $0.00 Loc. Rating% Tree 31 Poor10 Poor to FairWillow12.0 Species DBH (in)Drip (ft)Vigor Structure Risk Medium Pres. Value None Remove Tree Recommendations Salix species This tree is an older curly willow; in terrible condition with extensive dieback, dead codominant trunks and deadwood.Notes /DefectsCRZ (ft) 19.9062 804 Damage Loss % 31 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Tree Assessment Matrix Kennydale 320 Zone Reservoir Project Inspector: ISA Certified Arborist ISA Tree Risk Assessment Qualified Urban Forestry Services, Inc. 15119 McLean Road Mount Vernon, WA 98273 (360) 428-5810 P. Thompson Tree #Species DBH Trunk Area $/in sq Tree Appraisal: Replace Diam. Basic Value Replace Cost Species Rating Cond. Rating Site%Cont.%Loc.%Appraised Value 32 Douglas fir 10.5 100%87 3.0 $57 $4910 $380 $0.00 Loc. Rating% Tree 32 Fair6 FairDouglas fir 10.5 Species DBH (in)Drip (ft)Vigor Structure Risk Low Pres. Value Moderate Root Pruning Monitor Tree Install Tree Protection Recommendations Pseudotsuga menziesii Remote assessment, appears to be the closest of a group of Douglas fir trees in this area. This tree leans over the property line. Trees in this group may require root pruning during construction work.Notes /DefectsCRZ (ft) 10.5 Damage Loss % 32 Date: 10/5/2016 11/2/2016 Field Work Completed: DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E DEFINITIONS FOR TREE ASSESSMENT MATRIX Page 1 of 2 Urban Forestry Services, Inc. 15119 McLean Road Mt. Vernon, WA 98273 (360) 428-5810 DEFINITIONS AND NOTES TREE ASSESSMENT: d.b.h. = Diameter at breast height, measured 4.5 ft. above surface grade. Critical Root Zone (CRZ) = A circular area with a radius of 12 inches for every inch d.b.h. which generally provides optimum protection from construction impacts. Vigor = Health based on size and color of leaf or needle and length of annual shoot growth. Good = Shoot growth, leaf size and leaf color are typical of the tree age and species. Fair = Shoot growth, leaf size, and leaf color are below average for the tree age and species. Some deadwood is evident in the crow n. Treatment may be required to foster improved future growth. Poor = Shoot growth, leaf size, and leaf color are highly stunted, and there is a significant amount of dead twigs and branches in the crown. Structure = Trunk and branch development and it's estimated susceptibility to failure. Good = No significant defects evident in the trunk, scaffold limbs, and root flare area. Fair = Minor defects evident. Poor = Significant defects that could lead to future failure of main branches or the entire tree. Defects and Comments Explanation: Codominant trunks = Vertical stems of equal diameter, often with included bark and a weak point of attachment to the main trunk. Decline = Loss of vigor of the entire tree that is typically not reversible. End weight = Accumulation of dense growth at the end of a branch which can lead to structural weakness of the limb. Epicormic shoots = Stem growth originating from dormant buds beneath the bark, commonly in response to injury, stress, or pruning cuts. Included bark = Junction just below two branches where bark ridge is curled inward towards center of tree creating high probability of failure. Live crown ratio = The ratio of the foliage canopy height to the total height of the tree. Trunk taper = Natural broadening in diameter at the base of the main trunk and large scaffold limbs associated with strong structure. Tree Risk Assessment: Level 1 Limited Visual Assessment = Includes a broad overview of an individual tree or group of trees near specified targets conducted to identify obvious defect s or other conditions of concern. A limited visual assessment typically focuses on identifying trees with imminent and/or probable likelihood of failure. Level 1 assessments do not always meet the criteria for a "risk assessment" if they do not include analysis and evaluation of individual trees. Defects found in a level 1 assessment may require a Level 2 or Level 3 assessment. Level 2 Basic Assessment = A detailed visual inspection of a tree and its surrounding site, and a synthesis of the information collected. It requires that a tree risk assessor walk completely around the tree-looking at the site, buttress roots, trunk, and branches. A basic assessment may include the use of simple tools to gain additional information about the tree or defects. Defects found in a level 2 assessment may require a Level 3 assessment be completed for further testing and analysis. Level 3 Advanced Assessment = Advanced assessments are performed to provide more highly detailed information about specific tree components, defects, targets or site conditions. An advanced assessment is perform ed in conjunction with or after a Level 2 Basic Assessment if the assessor determines the need for (requires) additional information. DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E DEFINITIONS FOR TREE ASSESSMENT MATRIX Page 2 of 2 Urban Forestry Services, Inc. 15119 McLean Road Mt. Vernon, WA 98273 (360) 428-5810 Risk Rating Extreme The extreme-risk category applies in situations in which failure is imminent with a high likelihood of impacting the target, and the consequences of the failure are severe. The tree risk assessor should recommend that mitigation measures be taken as soon as possible. In some cases, this may mean immediate restriction of access to the target zone area to avoid injury to people. High High-risk situations are those for which consequences are significant and likelihood is very likely or likely, or consequences are severe and likelihood is likely. This combination of likelihood and consequences indicates that the tree risk assessor should recommend mitigation measures be taken. The decision for mitigation and timing of treatment depends on the risk tolerance of the tree owner or risk manager . In populations of trees, the priority of high-risk trees is second only to extreme-risk trees. Moderate Moderate-risk situations are those for which consequences are minor and likelihood is very likely or likely, or likelihood is somewhat likely and consequences are significant or severe. The tree risk assessor may recommend mitigation and/or retaining and monitoring. The decision for mitigation and timing of treatment depends upon the risk tolerance of the tree owner or manager. In populations of trees, mo derate-risk trees represent a lower priority than high- or extreme-risk trees. Low The low-risk category applies when consequences are negligible, when likelihood is unlikely, or consequences are minor and likelihood is somewhat likely. Mitigation or maintenance measures may be appropriate for some trees, but the priority for action is low. Tree risk assessors may recommend retaining and monitoring these trees, as well as mitigation that does not include removal of the tree. Mitigat ion treatments may reduce risk or future risk, but the categorized risk rating is already at the lowest level. Preservation Value Explanation HAZARD = Hazard tree, remove. LOW = Poor specimen MODERATE = Common species with minimal character. HIGH = Good character tree, save if possible. SPECIAL = Unique species, save if possible. Maintenance Recommendations Explanation Cable and/or Brace = Cabling and/or Bracing would decrease the potential risk of failure, but not eliminate the possibility. Create Wildlife Snag = Cut danger trees to a lower stable height to serve as wildlife snags, providing perching, nesting, and a source of food for birds and other wildlife. Crown Clean = Selective removal of one or more of the following items: dead, dying, diseased, weak branches, and/or dead branches, epicormic shoots from a tree's crown. Crown Raise = Selective removal of lower branches of the tree in order to provide vertical clearance. Crown Reduction = Reduction in size or height of tree by pruning away height or width. Arborist must be knowledgeable of the ability of the species to sustain this type of pruning. Crown Restoration = Pruning to improve the structure, form, and appearance of trees that have been severely headed, vandalized, or storm damaged. Crown Thin = Selective removal of branches to increase light penetration, air mo vement, and reduce end weight in branching. Monitor = These are trees of a particular species or condition that may be prone to more rapid decline than other trees. These trees should be inspected at least annually for changing conditions. Remove = The high to extreme risk warrants that the tree shall be removed immediately. PRUNING NOTE: Pruning shall be performed by an ISA Certified Arborist with proven knowledge and ability, using ANSI A300 Pru ning Specifications. The actual work should be bid by companies qualified to do the work. DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Urban Forestry Services, Inc. 15119 McLean Rd. Mount Vernon, WA 98273 Title: Explanation of Critical Root Zone (CRZ) Source: Urban Forestry Services, Inc Jim Barborinas, ISA Certified Arborist PN-0135 ASCA Registered Consulting Arborist #356, ISA Tree Risk Assessment Qualified Date: 2015-16 Not to Scale The Critical Root Zone (CRZ) of a tree is established on the basis of the trunk diameter. The CRZ is a circular area which has a radius of 12 inches to every inch diameter of trunk measured at 4.5 feet above grade. Root systems will vary both in depth and spread depending on size of tree, soils, water table, species and other factors. However, this CRZ description is generally accepted in the tree industry. Protecting this entire area should result in no adverse impact to the tree. The above CRZ drawing has been further differentiated into the ’Perimeter’ (PCRZ) and ‘Interior’ (ICRZ) to help define potential impact and required Post Care. Generally, the full PCRZ is considered the optimum amount of root protection for a tree. As one encroaches into the “Perimeter CRZ, but not into the “Interior CRZ” the greater Post Care the tree would require to remain alive and stable. The ‘Interior CRZ is half the radius of the full PCRZ. Disturbance into the ICRZ could destabilize or cause the tree to decline. The absolute maximum disturbance allowed should leave the ‘Interior’ CRZ undisturbed if the tree is to have any chance of survival. This ‘Interior’ CRZ would approximately equal the size of a rootball needed to transplant this tree which in turn would require extensive Post Care and possibly guying. Post Care Treatment includes but may not be limited to; regular irrigation, misting, root treatment with special root hormones, mulching, guying and monitoring for several years. Tree Trunk Critical Root Zone (CRZ) = 12” Radius for every Tree inch diameter is generally considered optimum protection. Perimeter Critical Root Zone (PCRZ) = the outer half of the CRZ The greater the disturbance allowed in this area, the greater Post Care is required. Interior Critical Root Zone (ICRZ) = the inner half of the CRZ Protecting only this area would cause significant impact to the tree, potentially life threatening, and would require maximum Post Care Treatment to retain the tree. See Post Care Treatment below. DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E General Tree Protection Guidelines By Urban Forestry Services, Inc. 2011-12 Page 1 of 3 General Tree Protection Guidelines With Critical Root Zone Explanation Attachment 1. Responsibilities: These Guidelines pertain to any disturbance, use or activity within the Critical Root Zone of any retained tree on this project. See attached Critical Root Zone Explanation for reference. The owner’s arborist and general contractor shall meet onsite before any site work begins, to review and designate the most appropriate methods to be used to protect the retained trees during construction. These guidelines apply to work provided by all contractors and sub-contractors on the project. The project consulting arborist shall be contacted prior to any work that may need to enter the tree protection fencing. Two days notice shall be provided to the project consulting arborist. A proposed method for work shall be provided to the arborist. This method shall be reviewed by the project consulting arborist and either approval and / or comments provided by the project consulting arborist prior to commencing works within the tree protection area. He or she should be notified within 8 hours should any injury occur to any protected tree or its larger roots (greater than 2-inch diameter) so that appropriate assessment and/or treatment may be made. 2. Soil Disturbance: No soil disturbance shall take place before tree protection fences are installed. All evaluated trees to be retained within these areas are clearly illustrated on the Site Plan. 3. Designated Tree Removals: The owner’s arborist and contractor shall confirm on site which trees are to be removed and those to be retained. Directional felling and removal of trees will be completed with great care to avoid any damage to the trunks, limbs, and critical root zones of the retained trees. 4. The Tree Protection Site Plan shows the recommended location of the Tree Protection Fence (TPF). Immediately after the clearing limits and grading stakes are set in the field, the owner’s arborist, during review and discussion with the contractor, will make a final determination on the tree protection requirements depending on construction limits and impact on major roots and soil condition. The arborist may adjust clearing limits in the field so that, in his/her opinion, tree roots and soils are protected while necessary work can proceed. 5. The Tree Protection Fence (TPF) shall be installed along the clearing limits, with special consideration of the Critical Root Zone (CRZ) of trees to be preserved. The CRZ of a tree is generally described as an area equal to 1-foot radius for every 1-inch diameter of tree. For example, a 10-inch diameter tree has a CRZ of 10-foot radius. Work within the CRZ may be limited to hand work or alternate method of construction. The Tree Protection Fence (TPF) shall be constructed with steel posts driven into the ground with 6-ft. chain link fence attached. Upon consultation with the contractor, the arborist shall determine the placement of the fence and the extent and method of clearing that may be done DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E General Tree Protection Guidelines By Urban Forestry Services, Inc. 2011-12 Page 2 of 3 near preserved trees. Additional follow-up determinations may be required as work progresses on the project. See attached Critical Root Zone Explanation. No parking, storage, dumping, or burning of materials is allowed beyond the clearing limits or within the Tree Protection Fence. The TPF shall not be moved without authorization by the owner’s arborist or City arborist. The TPF shall remain in place for the duration of the project. Work within this area shall be reviewed with and approved by the owner’s arborist. Call Urban Forestry Services, Inc. at 360-428-5810 with questions. 6. Silt Fence: If a silt fence is required to be installed within the Critical Root Zone of a retained tree, the bottom of the silt fence shall not be buried in a trench, but instead, folded over and placed flat on the ground. The flat portion of the silt fence shall be covered with gravel or soil for anchorage. 7. CRZ over Hardscape: Where the Critical Root Zone (CRZ) includes an area covered by hardscape, the TPF can be placed along the edge of the hardscape if and until it is removed. After hardscape removal, the available CRZ should be backfilled with topsoil up to 6 inches deep and protected with the TPF. Incorporation of topsoil into the existing sub-grade shall be determined by the consulting arborist. Where applicable a specification for topsoil will be provided or approved by Urban Forestry Services, Inc. 8. Tree Protection Signs shall be attached to the fence only and shall be shown as required on the Site Plan. They should read “Protect Critical Root Zone (CRZ) of trees to be retained. No soil disturbance, parking, storage, dumping, or burning of materials is allowed within the Tree Protection Barrier. " Monetary Fines based on the appraised dollar value of the retained trees may also be included on these signs. Telephone contact details for the project consulting arborist should also be included in the sign. 9. Soil Protection within the Critical Root Zone (CRZ): Where vehicular access, temporary work pad or storage pad is required within the CRZ of any preserved tree that is not protected with hardscape, the soil shall be protected with 18” of woodchips and/or plywood or metal sheets to protect from soil compaction and damage to roots of retained trees. A biodegradable coir mat netting is recommended to be placed on the existing grade before woodchip placement to protect the condition and confirm the location of the existing grade. The netting is a valuable benchmark upon removal of the material within the CRZ. 10. Landscape Plans, Irrigation Design and Installation Details: Great care shall be exercised when landscaping within the Critical Root Zone (CRZ) of any tree. Roots of preserved trees and other vegetation shall not be damaged by planting or installation of irrigation lines The owner’s arborist shall review the Landscape Plan for any potential design and tree preservation conflicts and approve related irrigation and landscape installation activities within the CRZ of retained trees. A proposed method for work shall be provided to and approved by the arborist. 11. Backfill and Grade Changes: The owner’s arborist will determine to what extent backfilling may be allowed within the Critical Root Zone of a preserved tree, and if needed, the specific DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E General Tree Protection Guidelines By Urban Forestry Services, Inc. 2011-12 Page 3 of 3 material which may be used. Grade cuts are usually more detrimental than grade filling within the CRZ and should be reviewed by the arborist well in advance of construction. 12. Tree Maintenance and Pruning: Trees recommended for maintenance and approved by the owner, shall be pruned for deadwood, low hanging limbs, and proper balance, as recommended for safety, clearance or aesthetics. All pruning shall be done by an International Society of Arboriculture Certified Arborist. ANSI A300 American Standards for Pruning shall be used. Limbs of retained trees within 10 feet or less, of any power line, depending on power line voltage, may only be pruned by a Utility Certified Arborist. This pruning must be coordinated with the local power company, as they may prefer to provide this pruning. 13. Underground Utilities: Utility installation within the Critical Root Zone (CRZ) of any retained tree shall be reviewed by the Project Consulting Arborist. A less root disturbing route or minimal impact installation method of utility installation may be discussed and recommended i.e. tunneling or trenchless excavation. Trenching through the Interior CRZ of a retained tree is not usually allowed. See CRZ Explanation to differentiate between the Perimeter and Interior CRZ. An Air spade and Vac., Truck may be required when utility installation is mandatory near a retained tree or other methodology such as trenchless excavation. 14. Root Pruning: Required work may result in the cutting of roots of retained trees. Cutting roots 2” or greater should be avoided. Potential root pruning needs should be reviewed in advance with the Project Consulting Arborist to minimize potential root fracturing and other damage. Severed roots of retained trees shall be cut off cleanly with a sharp saw or pruning shears. Applying pruning paint on trunk or root wounds is not recommended. Severed roots shall be covered immediately after final pruning with moist soil or covered with mulch until covered with soil. Excavation equipment operators shall take extreme care not to hook roots and pull them back towards retained trees. In all cases, the excavator shall sit outside of the CRZ. Soil excavation within the CRZ shall be under the direct supervision of the owner’s arborist. 15. Supplemental Tree Irrigation: If clearing is performed during the summer, supplemental watering and/or mulching over the root systems within the Tree Protection Fencing of preserved trees may be required by the owner’s arborist. The arborist should be notified of the proposed schedule for clearing and grading work. Supplemental watering and mulching over the root systems of roots impacted or stressed trees are strongly recommended to compensate for root loss and initiate new root growth. Long periods of slow drip irrigation will be most effective. A large coil of soaker hose starting at least 18" from the trunk and covering the Interior Critical Root Zone area is recommended. Water once per week and check soils for at least 12 inches infiltration. This work shall be under the direct supervision of the owner’s arborist. 16. Additional Measures: Additional tree protection recommendations may be required and may be specified in Urban Forestry Services, Inc. report(s). 17. Final Inspection: The owner’s arborist shall make a final site visit to report on retained tree condition following completed work and shall report to the city to release the bond for the retained trees. DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E ASSUMPTIONS AND LIMITING CONDITIONS Urban Forestry Services, Inc. 15119 McLean Rd. Mount Vernon, Washington 98273 1. Limitations of this Assessment This Assessment is based on the circumstances and observations as they existed at the time of the site inspection of the Client’s Property and the trees inspected by Urban Forestry Services, Inc. and upon information provided by the Client to Urban Forestry Services, Inc. The opinions in this Assessment are given based on observations made and using generally accepted professional judgment, however, because trees and plants are living organisms and subject to change, damage, and disease, the results, obser vations, recommendations, and analysis took place and no guarantee, warranty, representation, or opinion is offered or made by Urban Forestry Services, Inc. as to the length of the validity of the results, observations, recommendations, and analysis contained within this Assessment. As a result, the Client shall not rely upon this Assessment, save and except for representing the circumstances and observations, analysis, and recommendations that were made as at the date of such inspections. It is recommended that the trees discussed in this Assessment should be re- assessed periodically. Urban Forestry Services, Inc. shall not be required to give testimony or to attend court by reason of this report unless subsequent contractual arrangements are made, inclu ding payment of an additional fee for such services as described in our fee schedule and contract of engagement. Sketches, diagrams, graphs, and photographs in this report, being intended as visual aids, are not necessarily to scale and should not be cons trued as engineering or architectural reports or surveys. 2. Reaction of Assessment The Assessment carried out was restricted to the Property. No assessment of any other trees or plants has been undertaken by Urban Forestry Services, Inc. Urban Forestry Services, Inc. is not legally liable for any other trees or plants on the Property except those expressly discussed herein. The conclusions of this Assessment do not apply to any areas, trees, plants, or any other property not covered or referenced in this Assessment. 3. Professional Responsibility In carrying out this Assessment, Urban Forestry Services, Inc. and any Assessor appointed for and on behalf of Urban Forestry Services, Inc. to perform and carry out the Assessment has exercised a reasonable standard of care, skill, and diligence as would be customarily and normally provided in carrying out this Assessment. The Assessment has been made using accepted arboricultural techniques. These include a visual examination of each tree for structural defects, scars, external indications of decay such as fungal fruiting bodies, evidence of insect attack, discolored foliage, the condition of any visible root structures, the degree and direction of lean (if any), the general condition of the tree(s) and the surr ounding site, and the current or planned proximity of property and people. Except where specifically noted in the Assessment, none of the trees examined on the property were dissected, cored, probed, or climbed and detailed root crown examinations involving excavation were not undertaken. While reasonable efforts have been made to ensure that the trees recommended for retention are healthy, no guarantees are offered, or implied, that these trees, or all parts of them will remain standing. It is professionally impossible to predict with absolute certainty the behavior of any single tree or group of trees, or all their component parts, in all given circumstances. Inevitably, a standing tree will always pose some risk. Most trees have the potential to fall, lean, or otherwise pose a danger to property and persons in the event of adverse weather conditions, and this risk can only be eliminated if the tree is removed. DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E Without limiting the foregoing, no liability is assumed by Urban Forestry Services, Inc. or its directors, officers, employers, contractors, agents, or Assessors for:  any legal description provided with respect to the Property;  issues of title and or ownership respect to the Property;  the accuracy of the Property line locations or boundaries with respect to the Property; and  the accuracy of any other information provided to Urban Forestry Services, Inc. by the Client or third parties;  any consequential loss, injury, or damages suffered by the Client or any third parties, including but not limited to replacement costs, loss of use, earnings, and business interruption; and  the unauthorized distribution of the Assessment. The total monetary amount of all claims or causes of action the Client may have as against Urban Forestry Services, Inc. including but not limited to claims for negligence, negligent misrepresentation, and breach of contract, shall be strictly limited to solely to the total amount of fees paid by the Client to Urban Forestry Services, Inc. pursuant to the Contr act for Services as dated for which this Assessment was carried out. Further, under no circumstance may any claims be initiated or commenced by the Client against Urban Forestry Services, Inc. or any of its directors, officers, employees, contractors, agents, or Assessors, in contract or in tort, more than 12 months after the date of this Assessment. 4. Third Party Liability This Assessment was prepared by Urban Forestry Services, Inc. exclusively for the Client. The contents reflect Urban Forestry Services, Inc. best assessment of the trees and plants on the Property in light of the information available to it at the time of preparation of this Assessment. Any use which a third party makes of this Assessment, or any reliance on or decisions made based upon this Assessment, are made at the sole risk of any such third parties. Urban Forestry Services, Inc. accepts no responsibility for any damages or loss suffered by any third party or by the Client as a result of decisions made or actions based upon the use of reliance of this Assessment by any such party. 5. General Any plans and/or illustrations in this Assessment are included only to help the Client visualize the issues in this Assessment and shall not be relied upon for any other purpose. This report and any values expressed herein represent the opinion of Urban Forestry Services, Inc. Our fee is in no way contingent upon any specified value, a result or occurrence of a subsequent event, nor upon any finding reported. The Assessment report shall be considered as a whole, no sections are severable, and the Assessment shall be considered incomplete if any pages are missing. The right is reserved to adjust tree valuations, if additional relevant information is made available. This Assessment is for the exclusive use of the Client. DocuSign Envelope ID: EBD590F4-4493-4D53-B777-F51C36D33E6E