No preview available
HomeMy WebLinkAboutTR_Inventory_Assessment_UFSBC_Arborist_Report_241008_v1.pdf Renton Market and Piazza Improvement Project Tree Inventory, Assessment, and Tree Protection Planning PREPARED FOR: City of Renton Public Works Attn. Debbie Boodell, Capital Project Coordinator PREPARED BY: Tyler Holladay, Consultant ISA Certified Arborist® #PN-8100A ISA Tree Risk Assessment Qualified B.A. Urban Planning & Sustainable Development GIS Specialist REVIEWED BY: Josh Hollinger, Field Consulting Arborist ISA Certified Arborist #WE-12135AU ISA Tree Risk Assessment Qualified October 8, 2024 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Tree Inventory, Assessment, and Tree Protection Planning Renton Market and Piazza Improvement Project Renton, Washington October 8, 2024 Table of Contents Summary ................................................................................................................................... 1 Introduction ................................................................................................................................ 3 Findings ..................................................................................................................................... 4 Risk and Impact Assessments ................................................................................................ 4 Risk Assessment .................................................................................................................... 6 Construction Impact Assessment ........................................................................................... 9 Recommendations ....................................................................................................................19 Literature Cited .........................................................................................................................23 Attachments: ISA Level 2 Tree Assessment Matrix Tree Assessment and Protection Site Plans TA-01 – TA-06 General Tree Protection Guidelines Tree Preservation Zone (TPZ) Explanation Tree Risk Assessment Vocabulary Terms and Conditions Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com [Subject] Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 1 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Executive Summary I inventoried and assessed 60 trees on and surrounding the Renton Market and Piazza Improvement Project site in Renton, Washington, on September 13, 2024. Regulatory status Per definitions outlined in the City of Renton Code (RMC 4-11-200 Definitions ‘T’), the regulatory designations of these trees are as follows: Table 1. regulatory designations summary Removal and Retention I recommend the removal of 16 trees either to mitigate an unacceptable level of risk or poor health, or because construction impacts appear to be direct or severe to an unsustainable degree based on the plans provided. The regulatory designations of the 16 trees are as follows: Table 2. Removal tree regulatory designations summary The remaining 44 trees can be retained with various forms of protection and preservation before, during, and after construction. Risk Assessment i Landmark Tree: “A tree with a caliper of twenty-four inches (24") or greater, except for big leaf maples, black cottonwoods, and red alder trees, which qualify as landmark trees with a caliper of thirty inches (30") or greater.” ii Significant Tree: “A tree with a caliper of at least six inches (6"), except alder or cottonwood trees, which qualify as significant trees with a caliper of eight inches (8") or greater. Trees certified as high-risk shall not be considered significant.” RMC Designation Count Details Landmark i 0 Significant ii 50 Not Significant 10 Nine (9) trees do not meet significant size thresholds, and one (1) is not considered significant due to the high risk it poses to surrounding targets. Total 60 RMC Designation Count Details Significant 9 Not Significant 7 Six (6) trees do not meet significant size thresholds, and one (1) is not considered significant due to the high risk it poses to surrounding targets. Total 16 Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 2 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com The timeframe for this assessment is three (3) years. All inventoried trees were assessed using ISA Level 2 Basic Risk Assessment methods. The distribution of risk ratings as determined through these methods are as follows. Table 3. Risk rating summary Continued monitoring and reassessment within 3 years, or after construction has concluded (whichever comes first), is recommended for all trees that will be retained and protected as part of the project. Construction Impact Evaluation Relying on the listed preliminary data sources below, I expect a mostly polarized range of impacts to trees within and surrounding the project areas; trees are likely to either experience Direct severe impacts – 23 trees – or little to no impact – 30 trees – to their critical root systems. I have evaluated seven (7) trees as likely to experience Minor impacts due to potential above- ground building clearance conflicts with tree branches, which will likely require pruning. • Architectural site plans provided by Graham Baba Architects (09-10/24) • Landscape plans provided by Hewitt (09-10/24) • Field observations and data from my inventory and assessment fieldwork (09/13/24) Table 4. Impact Classification Summary iii Impact Class Protect Remove Total Direct 9 iv 14 23 Major 0 0 0 Minor 7 0 7 Negligible 0 0 0 None expected 28 2 v 30 Totals 44 16 60 iii See the UFS|BC Tree Protection Zone Impact Analysis section for definitions and more details. iv Nine trees are directly within landscape areas that are planned for renovation. These trees can be preserved with our recommended guidance if desired; otherwise, removal is advised. v One tree is recommended for removal due to high risk and another due to poor health ISA Level 2 Risk Rating Count Risk Management Recommendations Low 57 Continued monitoring Moderate 2 Reduction pruning High 1 Removal Extreme 0 Total 60 Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 3 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Introduction As requested by Debbie Boodell, City of Renton Capital Project Coordinator, I conducted a tree inventory, ISA Level 2 Basic Risk Assessment, and a preliminary construction impact assessment for 60 trees growing within and immediately surrounding the boundaries of the Renton Market and Piazza Improvement Project site. I conducted and completed my fieldwork on September 13, 2024. The purpose of my engagement is to provide technical and professional arboricultural support to the City and the two primary contractors engaged in this project – Hewitt and Graham Baba. The function of the requested support is to fulfill the project’s tree assessment and tree protection requirements as they relate to permitting and to ensure the subject trees are managed and protected according to the City’s Tree Retention And Land Clearing Regulations (RMC 4-4-130) and industry best practices. Based on pre-engagement correspondence with the project team (Hewitt, Graham Baba and the City of Renton), and a thorough review of the various provided plans, site improvements will generally include, but are not limited to: • Architectural: Interior and exterior renovations to the existing “Market” structure, with minimal changes to the overall size and footprint. • Landscape: renovations and changes to the existing “Piazza Park,” including select landscape beds, surfaces/hardscaping, and other park elements (lighting, seating, etc.). These improvements present varying degrees of potential impacts to existing trees throughout the project site. Most significant are the planned changes to the park and to the south entrance of the Market building. These areas will include varying degrees of tree root zone changes and disturbance to demolish and construct new surfaces and planting beds and will require some trees to be removed. Through my findings and recommendations that follow, I feel the City and its primary project contractors will have the information and guidance they need to effectively protect and manage the site’s living assets in the lead-up to, during, and after construction. I believe that attention and adherence to my recommendations and protection guidelines, as well as continued engagement with my consultancy throughout the life of the project, will ensure that the important social, environmental, and economic benefits that these trees can offer the community of Renton are maximized to their fullest potential. Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 4 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Findings An ISA Level 2 Tree Assessment Matrix with photos and detailed information on each of the trees included in this inventory and assessment is attached. Tree Inventory, Assessment, and Tree Protection Site Plans (TA-01 – TA-06) are also attached and show the locations of each of the assessed trees, as well as tree protection planning analysis and recommended treatments. Site Summary The project site is located within Renton’s Downtown Business District and Civic Core Area. The site is a large city block consisting of a public park (Piazza Park) throughout the south half and a Market building within the northern half. At the north end of the block is the City of Renton’s Transit Center. The site is relatively densely treed with ROW street trees throughout the perimeter. The interior of the site is less densely treed, though there is significant canopy present within the park and near the south side of the Market building. Inventory and Assessment In total, I actively recorded and visually assessed 60 trees in the field. Each tree received an aluminum numerical identification tag which was nailed to the trunk. Tree inventory areas were defined before my fieldwork through the contract and pre-fieldwork correspondence with the project team. The executed agreement from August 2024 defines trees for inclusion as “Trees with a trunk diameter (measured at 54 inches) greater than 4 inches located within the specified landscape and /public rights-of-way...” (Contract ‘Exhibit A’ Map shown below). The only change to this scope is the exclusion of the Gateway Park property, west of Loagan Ave. S.; we received direct direction from Debbie Boodell to not include this area, as it is no longer part of the scope of the project. Figure 1. Contract ‘Exhibit A’. Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 5 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Regulated Trees Fifty (50) trees meet the size and species thresholds that classify them as Significant according to definitions outlined in the City of Renton Code (RMC 4-11-200 Definitions ‘T’). Ten (10) trees do not meet the code’s definition – nine (9) of these have trunk diameters that measure less than 6 inches, and one (1) was found to be a high risk, thus disqualifying it from being significant. No Landmark trees exist in the population. Table 2. regulatory designations summary Species The tree species distribution for the inventory and assessment population is relatively diverse despite the fact that the population is almost completely comprised of broadleaf species and is weighted toward red maple street tree cultivars along the perimeter. The site’s interior is adorned by mature honey locust, and young and semimature scatterings of katsura, serviceberry and vine maple. Outside of the perimeter in the nearby median planter to the east is a row of maturing green ash trees. Table 5. Species Distribution Summary Species Count Red maple (Acer rubrum) 24 Honeylocust (Gleditsia triacanthos) 11 Western serviceberry (Amelanchier alnifolia) 7 Green ash (Fraxinus pennsylvanica) 6 Vine maple (Acer circinatum) 5 Katsura (Cercidiphyllum japonicum) 3 Strawberry tree (Arbutus unedo) 2 Colorado spruce (Picea pungens) 1 Flowering dogwood (Cornus florida) 1 Total 60 RMC Designation Count Details Landmark 0 Significant 50 Not Significant 10 Nine (9) trees do not meet significant size thresholds, and one (1) is not considered significant due to the high risk it poses to surrounding targets. Total 60 Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 6 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Age Class The relative tree age vi distribution throughout the assessment population is mainly dominated by mature trees at 88% of the population. Young and semimature trees comprise 12% of the population. Condition The overall conditionvii of the trees is fair, with 66% in fair condition, 27% in good condition, 7% in poor condition. Risk Assessment An ISA Level 2 Assessment Matrix with photos and detailed information on each of the inventoried and assessed trees is attached. I assessed all trees with trunk diameters greater than 4 inches throughout the defined inventory and assessment areas using ISA Level 2 Basic Assessment methods. These trees and their associated ISA Level 2 risk rating determinations are detailed in Table 4 below. Specifications and more detailed information surrounding mitigation recommendations for these trees (if warranted) are provided in the recommendations section. Table 6. ISA Level 2 Risk Summary vi Relative Tree age: young to semimature = less than 40% life expectancy; mature = 40% to 80% life expectancy; old = greater than 80% life expectancy. vii ‘Condition’ is based on the Guide for Plant Appraisal, 10th Edition, and determined using health, structure, and form. Level 2 Risk Rating General Rec. Code Designation Count Tree ID Totals Low Retain Significant 39 1 2 3 4 5 6 7 18 22 23 24 25 26 27 29 30 31 32 36 40 41 42 43 44 45 46 48 49 50 51 52 53 54 55 56 57 58 59 60 42 57 Non-significant 3 17 19 21 Remove Significant 9 9 11 12 13 15 20 33 34 35 15 Non-significant 6 8 10 14 16 37 38 Moderate Retain Significant 2 28 39 2 2 Non-significant 0 Remove Significant 0 0 Non-significant 0 High Retain Significant 0 0 1 Non-significant 0 Remove Significant 0 1 Non-significant 1 47 Totals 60 60 60 Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 7 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Only six (6) trees – 4, 11, 26, 28, 39 and 47 – contained parts or defects that I found concerning. These parts of concern generally included codominant stems or branches with included bark at their unions and larger branches that appeared overextended in horizontal length. The targets I considered during this assessment mostly included pedestrians, parked vehicles and buses, and transit station infrastructure. I also considered other targets such as roadway use and future improvements and infrastructure. Occupancy rates for these targets were considered in the context of current and future use. I evaluated the pedestrian and vehicular target occupancy rates as frequent, given the busy ebb and flow of the transit station and regular pedestrian use throughout the park. Transit station infrastructure and permanent facilities were evaluated as constant occupancy. Despite the risk ratings being Low for 95% of the assessed trees, I nevertheless recommend that these trees be continually monitored and reassessed regularly, per the guidance in our recommendation section. The timeframe for this assessment is three (3) years. Continued monitoring and reassessment within three (3) years (September 2027), or immediately after construction (whichever comes first) is recommended for all trees that will be retained as part of the project. Risk Assessment Limitations Assignment My ground-based visual risk assessment of the trees throughout the park is based on one (1) site visit on September 13, 2024. My assignment, as proposed in the executed agreement from August 2024, defines trees for inclusion as “Trees with a trunk diameter (measured at 54 inches) greater than 4 inches located within the specified landscape and /or public rights-of-way...” (Contract ‘Exhibit A’ Map shown above in Figure 1). I assessed each tree using ISA Level 2 methods from the ground and from all reasonably accessible angles. My assessment was limited to visible and accessible portions of the root collar and canopy. Vegetation or other material covering the ground and tree parts, such as English ivy, etc., may be obstructing significant defects from view. All photographs, samples, and readings, if applicable, were taken at the time the assessment was performed. Tree Risk Assessments It is important for the City of Renton to know and understand, as the owner and manager of these trees, that all trees pose some degree of risk from failure or other conditions. The information and recommendations within this report have been derived from the level of tree risk assessment identified above, using the information and practices outlined in the International Society of Arboriculture’s Best Management Practices for Tree Risk Assessment and American National Standards Institute A300 Tree Risk Assessment Standard, as well as the information available at the time of the inspection. However, the overall tree risk rating, the mitigation recommendations, or any other conclusions do not preclude the possibility of failure from undetected conditions, weather events, or other acts of man or nature. Trees can fail unpredictably, even if no defects or other conditions are present. Tree failure can also cause adjacent trees to fail, resulting in a “domino effect” that impacts targets outside the foreseeable target zone of this tree. It is the responsibility of the tree owner or manager to schedule repeat Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 8 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com or advanced assessments, determine actions, and implement follow-up recommendations, monitoring, and/or mitigation. Bartlett Tree Experts can make no warranty or guarantee whatsoever regarding the safety of any tree, trees, or parts of trees, regardless of the level of tree risk assessment provided, the risk rating, or the residual risk rating after mitigation. The information in this report should not be considered as making safety, legal, architectural, engineering, landscape architectural, land surveying advice or other professional advice. This information is solely for the use of the tree owner and manager to assist in the decision-making process regarding the management of their tree or trees. Tree risk assessments are simply tools that should be used in conjunction with the owner or tree manager’s knowledge, other information, and observations related to the specific tree or trees discussed and sound decision-making. Photo 1. Looking northwest, Tree 47 (circled in red) was found to be a high risk due to poor observed structural elements. The tree is recommended for removal to mitigate the risk. Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 9 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Construction Impact Assessment Introduction and Background In reviewing the preliminary plans listed below and discussing the planned methods and extents with the project team, the renovation and construction of the proposed Market building and Piazza Park has the potential to be significantly impactful for all trees within and immediately surrounding the site. • Architectural site plans provided by Graham Baba Architects (09-10/24) • Landscape plans provided by Hewitt (09-10/24) • Field observations and data from my inventory and assessment fieldwork (09/13/24) There are several primary considerations I weigh when analyzing impacts and determining which trees can be effectively preserved and protected. These considerations generally include long-term tree stability, health, structure, and form. Ultimately, a preserved tree must be able to sustain and support itself and not be or become an unacceptable risk as a result of construction. • Stability: each tree's protected and retained root system must be wide and deep enough to hold the tree upright during and after construction during normal weather events. • Health: The protected and retained root system and live branching of each tree must be sufficient to provide adequate resources to maintain long-term health and vigor considering the potential impacts. • Structure and form: The balance and appearance of the crown of a tree becomes a factor for consideration when trees are removed around retained trees or when trees require pruning to provide clearance for buildings and other infrastructure. Exposed interior trees can have asymmetrical crowns and low live-crown-ratios (LCR), which may predispose them to windthrow or torsional failures in the future. This can also be the case with trees that may require significant clearance pruning that creates an off-balance crown. These interior and clearance-pruned trees can also be unsightly standing on their own. The Tree Protection Zone analysis that follows attempts to compare and contrast various interrelated species, morphological, behavioral, dimensional, and spatial variables that we understand are indicators of whether a tree can or should be recommended for preservation. These interrelated variables are applied through a lens of the considerations listed above - long- term tree stability, health, structure, and form. Given our understanding of the City’s strong desire to retain and protect trees greater than or equal to 6 inches DBH, we have given careful and diligent attention to the impact analysis and protection recommendations that follow. All tree protection measures herein will require close communication and monitoring with our team before, during, and after construction to ensure that protection is successful. City of Renton Tree Protection Standards The City of Renton generally prohibits construction activities within the dripline of trees planned for retention (RMC 4-4-130.H.10). While valuable for generalized impact evaluation purposes due to simplicity, the use of a tree’s drip line in impact evaluation is relatively limited when more precise evaluations are needed in dense built environments, and when maximizing tree retention is desired. Nearly all of the trees I evaluated have driplines that overlap some aspect of significant change related to this project or reside directly within the work limits. As such, we Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 10 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com have employed more precise impact assessment methods to evaluate the anticipated degree of potential impacts, a tree’s expected tolerance of anticipated impacts, and what, if any, alternative mitigation options may be utilized to allow more trees to be retained. The following impact analysis is provided to give a more comprehensive picture of what impacts trees could potentially experience and how trees may respond to these anticipated impacts using methods outlined in current industry standards covering the management of trees during site development and construction. The following methodology incorporates multiple interrelated factors – species, size, age, condition, species construction tolerance, risk, percent Calculated Tree Protection Zone (CTPZ) impact, etc. – to determine which trees are suitable for preservation, the degree of impact a tree has the potential to incur, and where tree protection efforts need to be spatially and organizationally focused throughout the project. UFS|BC Tree Protection Zone (TPZ) Analysis See the attached Tree Inventory, Assessment, and Tree Protection Site Plans and Matrix for details of this analysis and related protective measures. All 60 inventoried and assessed trees were evaluated for potential impacts using the provided preliminary plans. The species, dimensional, and condition metrics for each tree were evaluated and documented and then applied to the TPZ analysis outlined below. Construction Toleranceviii Of the tree species in the population, only one (1) tree, a flowering dogwood (Cornus florida), is known to have a low tolerance for construction impacts. The remaining species in the population tend to be more tolerant of construction impacts, with 48% moderately tolerant and 50% highly tolerant. Medium tolerance trees include Colorado spruce, honey locust, katsura, strawberry tree, vine maple, and serviceberry. High-tolerance trees include green ash and red maple. Suitability for preservation ix When factoring in the condition, relative age, size, and species tolerance to impacts for inventoried trees, as detailed above and in our various findings sections, the population's suitability for preservation includes a full range: High – 36 trees (60%) Medium – 19 trees (31%) Low – 4 trees (7%) Very low – 1 tree (2%) The tree with Very low suitability for preservation is classified as such due to its poor condition and High risk-rating. The trees with Low suitability for preservation are those that tend to exhibit less than optimal health and are known to have a lower tolerance for impacts. viii Species tolerance to construction is determined through a combination of personal professional experience and regional tree industry reference materials. This is species specific and treated in isolation, it is not based on tree condition or risk or proposed plans or anticipated impacts to a tree. ix Suitability for preservation is a categorization of a tree’s potential to remain an asset following development, irrespective of construction plans or anticipated impacts. Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 11 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Impact classification Trees classified as impacted in this assessment are those that will experience impacts, direct or indirect, to their Calculated Tree Protection Zone (CTPZ) based on the aforementioned preliminary plans provided by Hewitt and Graham Baba. Impacts are classified in the following ways: Table 7. Impact classification definitions Impact Class Definition DIRECT A tree resides directly within the planned areas of change and/or greater than 50% of a tree's CTPZ and/or canopy is expected to incur loss. MAJOR A tree resides outside the planned areas of change, but a large portion (20%<50%) of the tree's CTPZ and/or canopy is expected to incur loss. MINOR A tree resides outside of the planned areas of change, and a small portion (5%<20%) of the tree's CTPZ and/or canopy is expected to incur loss. NEGLIGIBLE A tree resides outside of the planned areas of change to the degree that less than 5% of the tree's CTPZ and/or canopy is expected to incur loss. NONE EXPECTED A tree resides outside of the planned areas of change to the degree that no impacts are expected within the tree's CTPZ. Through remote spatial analysis using measurements I collected in the field, planned improvements were evaluated against each tree's CTPZ. Combining this analysis with our observational and categorical findings, we identified specific trees as potential candidates for removal or retention and protection. Impacted trees Twenty-three (23) trees are expected to incur some form of Direct impact. Some direct impacts are related to changes in hard surfacing, and others are related to landscape changes to the existing planting space. Of these trees: • Fourteen (14) are expected to incur direct, unavoidable, and unsustainable impacts due to hard surface changes and construction and will require removal. • Nine (9) will incur direct impacts through landscape planting space changes (grubbing) as currently proposed; however, I believe preservation is possible, contingent that these impacts are minimized through the alternative approaches outlined in the recommendations section below. Seven (7) trees are expected to incur Minor impacts. These trees are mostly expected to experience above-ground impacts related to pruning their branches/canopy to provide clearance for workers and equipment during construction. All of these trees can be effectively protected and preserved during and after construction, contingent upon my protection guidance outlined below. Non-impacted trees Thirty (30) trees are not expected to be impacted by construction. While many of these trees certainly reside close to planned improvements, potential impacts to above and below-ground tree parts appear to be mostly avoided due to either: Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 12 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com • Branches not appearing to present potential conflicts with construction or future use; and/or, • Critical roots are naturally protected due to existing surrounding hard surfacing remaining in place and unchanged. Of these trees, I recommend that 28 be preserved and protected. Two (2) are recommended for removal for reasons other than impacts – risk and health. Despite no impacts being expected for these trees, these non-impacted trees should still be protected per the attached UFS|BC General Tree Protection Guidelines to ensure that they do not incur any unplanned above or below-ground damage. Construction Impact Assessment Limitations Assignment My remote and visual ground-based construction impact assessments of the trees within and surrounding the project work limits are based on preliminary plans provided by Graham Baba Architects and Hewitt, as well as data I collected in the field on September 13, 2024. My assignment, as detailed in our August 2024 agreement, was to complete a construction impact assessment of trees within and bordering the project improvement areas and to identify trees requiring work, i.e., additional tree removal or special tree protection measures. Impact assessment methods are detailed in our findings above. All photographs, samples, and readings, if applicable, were taken at the time the assessments were performed. The assessment is limited to visible and accessible portions of the root collar and canopy; vegetation covering the ground and tree parts, such as English ivy, etc., may be obstructing significant defects from view. Construction Tree Impact Assessments It is important for the City of Renton to know and understand that trees are complex living organisms that do not exist in isolation; trees grow and adapt within the above and below- ground systems from which they live and with their surrounding living neighbors and non-living features. As such, changes to tree parts/structures, growing environments, and surrounding infrastructure can have unpredictable outcomes, negative and positive. The information and recommendations within this report have been derived from the levels of impact analysis identified above, using the information and practices outlined in the International Society of Arboriculture’s Best Management Practices for Managing Trees During Site Development and Construction and American National Standards Institute A300 Part 5: Management of Trees and Shrubs During Site Planning, Site Development, and Construction Standard, as well as industry related impact assessment information available at the time of our inspection. Removal and preservation determinations derived from this impact analysis, or any other impact- related conclusions do not preclude the possibility of failure, decline, or death from undetected conditions, weather events, or other acts of man or nature. Trees can unpredictably fail, decline, or die even if no defects or other conditions are present and even when all best efforts are made to mitigate or prevent potential impacts. Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 13 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com It is the responsibility of the tree owner or manager to schedule repeat or advanced assessments, determine actions, and implement follow-up recommendations, monitoring and/or mitigation. Bartlett Tree Experts can make no warranty or guarantee whatsoever regarding the safety or long-term viability of any tree, trees, or parts of trees, regardless of the level of impact assessment provided, protective treatments, the risk rating, or the residual risk rating after mitigation. The information in this report should not be considered as making safety, legal, architectural, engineering, landscape architectural, land surveying advice or other professional advice. This information is solely for the use of the tree owner and manager to assist in the decision-making process regarding the management of their tree or trees. Construction tree impact assessments are simply tools that should be used in conjunction with the owner or tree manager’s knowledge, other information and observations related to the specific tree or trees discussed and sound decision-making. Photo 2. Looking east, this photo shows areas of the existing Market building and Piazza Park. Much of the surfacing shown will remain unchanged, which will provide protection to roots during construction. More concerning in the area shown is potential impacts to tree trunks and branches. Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 14 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 15 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Table 8. Impact classification summary Impact Class Action Code Designation Count Tree ID Totals Direct Protect Significant 6 7 18 25 26 30 31 9 23 Non-significant 3 17 19 21 Remove Significant 9 9 11 12 13 15 20 33 34 35 14 Non-significant 5 8 10 14 16 37 Major Protect Significant 0 0 0 Non-significant 0 Remove Significant 0 0 Non-significant 0 Minor Protect Significant 7 27 28 29 39 52 53 54 7 7 Non-significant 0 Remove Significant 0 0 Non-significant 0 Negligible Protect Significant 0 0 0 Non-significant 0 Remove Significant 0 0 Non-significant 0 None expected Protect Significant 28 1 2 3 4 5 6 22 23 24 32 36 40 41 42 43 44 45 46 48 49 50 51 55 56 57 58 59 60 28 30 Non-significant 0 Remove Significant 0 2 Non-significant 2 38 47 Totals 60 60 60 Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 16 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 18 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 19 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Recommendations Tree Removal: 16 trees The following trees are recommended for removal either because of unsustainable construction impacts, unacceptable risk, or because a trees poor condition warrants its removal and replacement. See the risk assessment and construction impact section in our findings above for specific removal rationales. Table 9. Tree removal summary Code Designation Count Tree ID Significant 9 9 11 12 13 15 20 33 34 35 Non-significant 7 8 10 14 16 37 38 47 Totals 16 Removal guidance: a. See section 3 of the GTPG for reference. b. Tree removal shall be done in a manner that does not damage above and below-ground parts of retained and protected trees. c. Where possible, cut stumps low to the ground and leave the root mass in place. If stump or root extraction is required, take care not to pull, pluck, or tear the roots of surrounding trees that are identified for retention and protection. d. All removal activities shall adhere to ANSI Z133 Safety Standards. e. UFS|BC can provide recommended service providers for this work upon request. Tree Preservation and Protection: 44 trees The following trees within and surrounding the planned project improvements may be retained during and after construction, contingent on the careful implementation of the attached UFS|BC General Tree Protection Guidelines (GTPG), completion of specified risk mitigation treatments, and continued monitoring. Table 10. Protected tree summary Code Designation Count Tree ID Significant 41 1 2 3 4 5 6 7 18 22 23 24 25 26 27 28 29 30 31 32 36 39 40 41 42 43 44 45 46 48 49 50 51 52 53 54 55 56 57 58 59 60 Non-significant 3 17 19 21 Total 44 Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 20 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Tree Protection Guidance: UFS|BC General Tree Protection Guidelines (GTPG) with Tree Protection Zone Explanation: Our consultancy’s tree protection guidelines are attached. These guidelines generally align with the City’s requirements and go beyond what is required in ways that we feel provide more adequate, effective, and flexible protection. Tree Protection Timing and Phasing: While our attached guidelines outline specific tree protection treatments and some general timing/phasing guidance, the instructions and timing considerations below should supplement the guidelines. 1. Pre-construction: activities and installation to occur before the site is accessed by equipment or materials are staged. a. Install all tree protection fencing in alignment with the attached General Tree Protection Guidelines and Tree Protection Site Plans – TA-05 – TA-06. i. See sections 1, 2, 4, 5, 6, and 10 of the GTPG for reference. b. Prune trees as needed for anticipated clearances and risk mitigation. i. All pruning work must be guided by a qualified arborist following the pruning recommendations and thresholds below. 2. Site Preparation: recommended actions to improve retained tree growing conditions. a. If possible, chip wood from removed or pruned trees on site and spread the chips throughout the tree protection zones during site preparations. i. See sections 2, 3, and 11 of the GTPG for reference. ii. Wood chip mulch around trees that have or may experience root impacts from construction is beneficial for their long-term health; it closely matches where tree roots grow in a natural environment, and it is supportive of soil health and fine root growth. iii. Note: do not import or use fine bark mulch. Fine bark mulch does not provide the same benefits as wood chips, and in many instances, it becomes detrimental to tree health as the waxy fibers compress and exclude water. iv. Keep mulch 6 to 8 inches away from the base of trees to prevent burying root collars 3. During Construction: activities and installation to occur after preconstruction treatments have been applied and during construction. All applicable guidelines outlined in our GTPG must be followed. a. Specific sections of particularly high importance include sections 3, 13, 14, and 16. b. All earthwork and tree removals within the areas identified for “handwork and arborist monitoring only” must be completed by hand and with direct oversight from the project arborist; no heavy equipment is to be used to dig within these areas to reduce the severe impacts caused by extreme forces from digging machinery. Small mini excavators or mini tracked equipment may be used only if approved by the project arborist and with direct arborist oversight. c. On-site monitoring by the project arborist (or another qualified arborist) during earthwork activity within all tree protection zones of preserved trees is strongly recommended, as a qualified arborist can provide direct guidance on ways to approach discovered roots that minimize damage (i.e., proper cutting or preservation). 4. Post-Construction: activities to occur only after the project is complete, all materials and equipment have been removed from the site, and no further construction activities are expected. Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 21 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com a. Specific sections of the GTPG that may apply include sections 17, 18 and 19. b. Remove all tree protection fencing only after the project is complete. The project arborist (or another qualified arborist) should complete a final site visit to report on retained tree conditions following the completed work to identify if any further post-construction treatments may be required. See our “Monitor and reassess all retained and protected trees” recommendation below. Pruning: 7 trees Seven (7) trees recommended for retention with protection will likely require pruning for construction clearance. I also recommend that two (2) of these trees receive reduction pruning treatments to mitigate a moderate risk rating associated with potential overextended branch failure. Risk mitigation – 2 trees a. This recommendation applies to trees 28 and 39. b. Prune with the goal of mitigating the probable likelihood of branch failure for low- hanging, long, overextended large branches. c. Prune using a ‘natural system’ to reduce the length of long branches. d. Do not remove more than 15% of the tree’s live foliage. e. Do not top this tree or its branches. Reduction cuts should be made at viable lateral branches. f. Do not thin, “spiral prune,” or “wind sail” this tree. g. Pruning work shall follow ANSI A300 pruning standards, ANSI Z-133 safety standards and be completed by (or directly supervised by) an ISA Certified and Tree Risk Assessment Qualified (TRAQ) Arborist. h. UFS|BC can provide recommended service providers for this work upon request. Clearance Pruning – 7 trees a. The following trees may require clearance pruning, as identified during our impact assessment and fieldwork – 27, 28, 29, 39, 52, 53, and 54. b. Prune with the goal of providing building, equipment, and worker clearance from branches on an as-needed basis. c. Prune using a ‘natural system’ to either entirely remove a branch back to the branch collar at the trunk or reduce a branch’s length by cutting it back to a viable lateral branch. d. Do not remove more than 20% of a tree’s live foliage. e. Do not top trees or leave branch stubs. f. Pruning work shall follow ANSI A300 pruning standards and ANSI Z-133 safety standards and be completed by (or directly supervised by) an ISA Certified and Tree Risk Assessment Qualified (TRAQ) Arborist in coordination with the project contractor requiring clearance. EAB Preventative Treatment: 6 trees Six (6) trees recommended for retention with protection, located within the street median east of the site, are at risk of Emerald Ash Borer (EAB) (Agrilus planipennis) impacts. These trees include 55, 56, 57, 58, 59 and 60. With recent confirmations of EAB in Vancouver, BC, in May 2024 and the less recent confirmation in northwest Oregon in 2022, we can assume the pest is Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 22 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com in the greater Seattle region. UFS|BC is recommending that our clients preventatively manage this significant pest. Early preventative treatments include soil-applied systemic pesticides that may be easily applied by qualified and licensed applicators. If additional support is needed in this regard, please reach out to us and we can help coordinate treatments with a qualified and licensed IPM professional. String light removal: 1 tree Tree 30 contains string lights that have been installed by wrapping the lights around the trunk and branches. These lights should be removed. The lights do not appear to be functioning and appear damaged and ragged. Leaving these string lights installed has the potential to damage, and potentially kill the tree as the tree grows and becomes constricted/girdled by the cable. Monitor and reassess all retained and protected trees: To ensure that retained and protected trees are adequately protected throughout construction and to evaluate if physiological and structural conditions have changed over time, all retained/protected trees are recommended for regular monitoring throughout construction. A post-construction assessment is also recommended to determine if any additional treatments are required to ensure the viability of the trees. a. Regular monitoring and reassessment shall follow current ANSI A300 Tree Risk Assessment Standards, and ANSI Z133.1 safety standard, and be performed by an ISA Certified and Tree Risk Assessment Qualified (TRAQ) Arborist®. Please let me know if you have any questions regarding the findings and recommendations included in this report. Tyler Holladay, Consultant Email: tholladay@bartlett.com Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 23 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com 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. 2001 International Society of Arboriculture. Tree Risk Assessment in Urban Areas and Urban / Rural Interface, Dunster, J. 2009 Pacific Northwest Chapter, International Society of Arboriculture. Managing Trees During Construction Best Management Practices., Third Edition., Fite K, Smiley ET. 2023. International Society of Arboriculture. Trees and Development: A Technical Guide to Preservation of Trees During Land Development., Matheny N, Clark J. 1998. International Society of Arboriculture Renton Market and Piazza Improvement Project ● Tree Risk and Construction Impact Assessment, and Tree Protection Guidance October 8, 2024 ● Page 24 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com October 8, 2024 Tree Assessment Matrix Renton Market and Piazza Improvement Project Renton, Washnington ARBORIST: Tyler Holladay ISA Certified Arborist® #PN-8100A, ISA Tree Risk Assessment Qualified Satellite Office: 19331 21st Avenue West Lynnwood, WA 98036 1 (206) 367-4048 Main Office: 15119 McLean Road Mount Vernon, WA 98273 1 (360) 428-5810 www.urbanforestryservices.com UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height15 inDBH/QMD:135 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (66%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Fair Recommendations: Retain with protection.Notes: This tree is growing in a 5 x 5’ planting pit. Surface roots are present. Damage to roots is apparent. Sidewalk displacement is occurring surrounding the planting pit. Page 1 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height12.3 inDBH/QMD:235 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (66%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Fair Recommendations: Retain with protection.Notes: This tree is growing in a 5 x 5’ planting pit. Surface roots are present. Damage to roots is apparent. There is damage on the lower trunk. Page 2 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height11.3 inDBH/QMD:335 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Retain with protection.Notes: This tree is growing in a 5 x 5’ planting pit. Surface roots are present. Damage to roots is apparent. There is minor pavement displacement surrounding planting pit. Page 3 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height10.4 inDBH/QMD:435 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s): Parked vehiclesAssessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: Southmost codominant stem Condition Rating:Fair (53%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Possible SignificantPoorMediumFair Recommendations: Retain with protection.Notes: This tree is growing in a 5 x 5’ planting pit. This tree has two codominant stems with included bark at their unions that may be prone to failure. the planting pit great is beginning to contact the trunk of the tree. There is an old pruning injury at around 6 feet that contains decay. There is minor pavement displacement surrounding planting pit. Page 4 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height8.6 inDBH/QMD:535 ft 12 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Retain with protection.Notes: This tree is growing in a 5 x 5’ planting pit. The canopy of this tree is crowded. There’s an old pruning injury on the lower trunk at around 6 feet that contains decay. The planting pit great is beginning to contact the lower trunk. Significant pavement uplift is occurring to the north of this tree. Signs of Concrete grinding are apparent to correct the uplift. Page 5 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height12.3 inDBH/QMD:635 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (66%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Fair Recommendations: Retain with protection.Notes: This tree is growing in a 5 x 5’ planting pit. There is a trunk injury at around 8 feet on the west side of the trunk. The planting pit great is about to contact the lower trunk. Page 6 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Western serviceberry (Amelanchier alnifolia)Height8.2 inDBH/QMD:714 ft 12 ftStems:4Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is not shown on the provided survey/site plans. The tree has a buried root collar. Clarence pruning may be required during construction. Page 7 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Western serviceberry (Amelanchier alnifolia)Height4.6 inDBH/QMD:810 ft 10 ftStems:2Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Good Good Recommendations: Remove tree - direct or unsustainable impacts Notes: This tree is not shown on the provided survey/site plans. Page 8 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Katsura (Cercidiphyllum japonicum)Height11.8 inDBH/QMD:920 ft 12 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (66%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Fair Recommendations: Remove tree - direct or unsustainable impacts Notes: This tree is not shown on the provided survey/site plans. Page 9 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Vine maple (Acer circinatum)Height5.2 inDBH/QMD:1010 ft 10 ftStems:5Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Good Good Recommendations: Remove tree - direct or unsustainable impacts Notes: This tree is not shown on the provided survey/site plans. Page 10 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Katsura (Cercidiphyllum japonicum)Height13.4 inDBH/QMD:1120 ft 14 ftStems:4Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s): PedestriansAssessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: Codominant stems with included bark Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Possible MinorPoorLowFair Recommendations: Remove tree - direct or unsustainable impacts Notes: Page 11 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Vine maple (Acer circinatum)Height9 inDBH/QMD:1210 ft 10 ftStems:11Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: Condition Rating:Fair (66%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Fair Recommendations: Remove tree - direct or unsustainable impacts Notes: This tree is not shown on the provided survey/site plans. Page 12 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Strawberry tree (Arbutus unedo)Height11.1 inDBH/QMD:138 ft 8 ftStems:6Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Remove tree - direct or unsustainable impacts Notes: This tree is not shown on the provided survey/site plans. Page 13 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Vine maple (Acer circinatum)Height5.2 inDBH/QMD:148 ft 6 ftStems:3Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Remove tree - direct or unsustainable impacts Notes: This tree is not shown on the provided survey/site plans. The tree has diminished vigor and cracking sunken bark on the southside, possibly sun scald or canker. Page 14 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Strawberry tree (Arbutus unedo)Height10.3 inDBH/QMD:159 ft 10 ftStems:9Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Remove tree - direct or unsustainable impacts Notes: This tree is not shown on the provided survey/site plans. The tree is possibly two different trees, but I am considering it as one. Page 15 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Vine maple (Acer circinatum)Height4.7 inDBH/QMD:1612 ft 8 ftStems:2Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Remove tree - direct or unsustainable impacts Notes: This tree is not shown on the provided survey/site plans. Page 16 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Flowering dogwood (Cornus florida)Height4.2 inDBH/QMD:179 ft 6 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Fair Recommendations: Retain with protection.Notes: This tree is not shown on the provided survey/site plans. Page 17 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Western serviceberry (Amelanchier alnifolia)Height6.2 inDBH/QMD:1814 ft 12 ftStems:6Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is not shown on the provided survey/site plans. Page 18 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Western serviceberry (Amelanchier alnifolia)Height5.3 inDBH/QMD:1914 ft 12 ftStems:4Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is not shown on the provided survey/site plans. Page 19 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Western serviceberry (Amelanchier alnifolia)Height8.5 inDBH/QMD:2015 ft 12 ftStems:6Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Remove tree - direct or unsustainable impacts Notes: This tree is not shown on the provided survey/site plans. Page 20 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Western serviceberry (Amelanchier alnifolia)Height5.1 inDBH/QMD:218 ft 6 ftStems:2Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is not shown on the provided survey/site plans. Page 21 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height15.8 inDBH/QMD:2250 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Good Recommendations: Retain with protection.Notes: This tree is growing within a 5 x 5’ planting pit. The planting pit grate is beginning to contact the lower trunk. There is pavement displacement surrounding the planting pit. Page 22 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height13.2 inDBH/QMD:2350 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Good Recommendations: Retain with protection.Notes: This tree is growing within a 5 x 5’ planting pit. The planting pit grate is beginning to contact the lower trunk. There is pavement displacement surrounding the planting pit. Page 23 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height10.4 inDBH/QMD:2450 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Good Recommendations: Retain with protection.Notes: This tree is growing within a 5 x 5’ planting pit. The tree exhibits slightly diminished vigor and is potentially suppressed by neighboring trees. Page 24 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Western serviceberry (Amelanchier alnifolia)Height6.2 inDBH/QMD:2514 ft 10 ftStems:2Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: The root collar of this tree is slightly buried, and there is damage to the southmost stem. Page 25 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Katsura (Cercidiphyllum japonicum)Height15 inDBH/QMD:2640 ft 12 ftStems:3Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s): PedestriansAssessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: Codominant stems with included bark at their unionsCondition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Possible SignificantFairLowGood Recommendations: Retain with protection.Notes: This tree has three codominant stems with included bark at their unions. Page 26 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height12.5 inDBH/QMD:2750 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Good Recommendations: Retain with Protection. Clearance pruning may be required for construction. Notes: This tree is growing within a 5 x 5’ planting pit. The planting pit grate is beginning to contact the lower trunk. There is pavement displacement surrounding the planting pit. Page 27 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height15.4 inDBH/QMD:2850 ft 27.5 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Moderate Target(s): PedestriansAssessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Low Tree Parts(s) of Concern: Long overextended branches Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Probable SignificantFairMediumFair Recommendations: Retain with protection. Reduce the length of long overextended branches to lower the likelihood of failure. Clearance pruning may be required for construction. Notes: This tree is growing in a 5 x 5‘ planting pit. Pavement uplift surrounding the pit is minimal. The planting pit grate is beginning to contact the lower trunk. This tree contains one large lower branch on the south side that is quite long and horizontal, which may be prone to failing during heavy rain or snow loads. Page 28 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height13.8 inDBH/QMD:2950 ft 25 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Retain with Protection. Clearance pruning may be required for construction. Notes: This tree is growing in a 5 x 5‘ planting pit. Pavement uplift surrounding the pit is minimal. Page 29 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Colorado spruce (Picea pungens)Height14.1 inDBH/QMD:3055 ft 9 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection. Remove string lights to prevent constriction Notes: String lights have been installed and left in the tree. The light strands are wrapped around branches and the trunk. Over time, these lights may girdle branches and trunk tissue. Page 30 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Vine maple (Acer circinatum)Height7.5 inDBH/QMD:319 ft 11 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Fair Recommendations: Retain with protection.Notes: Page 31 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height7.3 inDBH/QMD:3215 ft 12 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Retain with protection.Notes: This tree is growing in a circular 6-foot diameter planting pit. There’s some form of metal mesh incorporated within the planting pit. Page 32 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height10.5 inDBH/QMD:3335 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Remove tree - direct or unsustainable impacts Notes: The project plans to remove this tree. The tree is growing in a circular 6-foot diameter planting pit. Landscape lighting is present within the planting pit. Page 33 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height13.8 inDBH/QMD:3445 ft 24 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Remove tree - direct or unsustainable impacts Notes: The project plans to remove this tree. This tree is growing in a circular 6-foot diameter planting pit. Landscape lighting is present within the planting pit. Page 34 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height10.6 inDBH/QMD:3525 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Remove tree - direct or unsustainable impacts Notes: The project plans to remove this tree. This tree is growing in a circular 6-foot diameter planting pit. Trunk damage has occurred on the north side, and root damage on the east side. Page 35 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height9.9 inDBH/QMD:3625 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (60%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Fair Fair Recommendations: Retain with protection.Notes: This tree is growing in a circular 6-foot diameter planting pit. There is a wire mesh material embedded within the planting pit. The tree leans slightly to the west. Page 36 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height5.4 inDBH/QMD:3712 ft 8 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Poor (46%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Poor Fair Poor Recommendations: Remove tree - direct or unsustainable impacts Notes: The project plans to remove this tree. This tree is growing in a circular 6-foot diameter planting pit. The tree exhibits significantly diminished vigor. Page 37 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height5.9 inDBH/QMD:3812 ft 8 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Poor (46%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Poor Fair Poor Recommendations: Remove tree - poor health. Replace with a better specimen. Notes: This tree is growing in a circular 6-foot diameter planting pit. The tree exhibits significantly diminished vigor. Page 38 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height15 inDBH/QMD:3945 ft 26.3 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Moderate Target(s): PedestriansAssessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Low Tree Parts(s) of Concern: Long overextended branches Condition Rating:Fair (66%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Probable SignificantFairMediumFair Recommendations: Retain with protection. Reduce the length of long overextended branches to lower the likelihood of failure. Clearance pruning may be required for construction. Notes: This tree is growing in a 5 x 5‘ planting pit. Pavement uplift surrounding the pit is minimal. The planting pit grate is beginning to contact the lower trunk. This tree contains one large lower branch on the south side that is quite long and horizontal, which may be prone to failing during heavy rain or snow loads. Page 39 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Honeylocust (Gleditsia triacanthos)Height9.9 inDBH/QMD:4025 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (66%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Fair Recommendations: Retain with protection.Notes: This tree is growing in a 5 x 5’ planting pit. There is a wire mesh material embedded within the planting pit. Significant pavement uplift is occurring surrounding this planting pit, which is being managed by grinding the concrete and painting the raised areas with high visibility paint to warn of the tripping hazard. Page 40 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height21.9 inDBH/QMD:4155 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is growing within a 5 x 5’ planting pit. The planting pit grate is beginning to contact the lower trunk. Pavement displacement is occurring surrounding the planting pit. Page 41 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height18 inDBH/QMD:4255 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Good Recommendations: Retain with protection.Notes: This tree is growing within a 5 x 5’ planting pit. The planting pit grate is beginning to contact the lower trunk. Pavement displacement is occurring surrounding the planting pit. Page 42 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height16.9 inDBH/QMD:4355 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Good Recommendations: Retain with protection.Notes: This tree is growing within a 5 x 5’ planting pit. The grate is missing from this pit, or it never existed. Pavement displacement is occurring surrounding the planting pit. Page 43 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height23.7 inDBH/QMD:4455 ft 20 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is growing within a long, narrow, planting pit surrounded by woody hedges. Surface roots are present, and the roots appear bound, confined, and outgrowing the planting location. Page 44 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height21 inDBH/QMD:4555 ft 20 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Good Recommendations: Retain with protection.Notes: This tree is growing within a long, narrow, planting pit surrounded by woody hedges. Surface roots are present, and the roots appear bound, confined, and outgrowing the planting location. Some branch unions appear to contain included bark; however, the upright nature of the branches appears stable. Page 45 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height19 inDBH/QMD:4655 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is growing within a long, narrow, planting pit surrounded by woody hedges. Surface roots are present, and the roots appear bound, confined, and outgrowing the planting location. The tree is slightly suppressed by the neighboring trees. Page 46 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height18.8 inDBH/QMD:4755 ft 20 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: High Target(s): Pedestrians, bus stop infrastructure, market building structure, vehicular parkingAssessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Low Tree Parts(s) of Concern: Multiple stems with significant included bark and apparent decay at the unions.Condition Rating:Fair (53%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Fair Probable SeverePoorHighFair Recommendations: Remove tree - high risk. Consider replacing with a similar species/cultivar Notes: This tree is growing within a long, narrow, planting pit surrounded by woody hedges. Surface roots are present, and the roots appear bound, confined, and outgrowing the planting location. The tree contains multiple large upright branches with included bark and decay at their unions, which and are highly likely to fail during strong wind events. There is also an old pruning injury near the base of the tree at around 6 feet that is occluding and beginning to decay. Page 47 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height20.8 inDBH/QMD:4855 ft 20 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Good Recommendations: Retain with protection.Notes: This tree is growing within a long, narrow, planting pit surrounded by woody hedges. Surface roots are present, and the roots appear bound, confined, and outgrowing the planting location. Page 48 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height18.5 inDBH/QMD:4955 ft 20 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is growing within a long, narrow, planting pit surrounded by woody hedges. Surface roots are present, and the roots appear bound, confined, and outgrowing the planting location. Page 49 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height20.6 inDBH/QMD:5055 ft 20 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is growing within a long, narrow, planting pit surrounded by woody hedges. Surface roots are present, and the roots appear bound, confined, and outgrowing the planting location. Page 50 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height22.5 inDBH/QMD:5155 ft 20 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with protection.Notes: This tree is growing within a long, narrow, planting pit surrounded by woody hedges. Surface roots are present, and the roots appear bound, confined, and outgrowing the planting location. Page 51 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height11.9 inDBH/QMD:5250 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (66%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Poor Good Good Recommendations: Retain with Protection. Clearance pruning may be required for construction. Nutrient deficiency correction is advised. Notes: This tree is growing within a 5 x 5’ planting pit. The planting pit grate is beginning to contact the lower trunk. There is pavement displacement surrounding the planting pit. The foliage of this tree exhibits interveinal yellowing, which is a symptom of nutrient deficiency (chlorosis). There’s a significant amount of trunk damage from carving/graffiti. Page 52 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height10.6 inDBH/QMD:5350 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Good (80%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Good Good Recommendations: Retain with Protection. Clearance pruning may be required for construction. Notes: This tree is growing within a 5 x 5’ planting pit. The planting pit grate is beginning to contact the lower trunk. There is pavement displacement surrounding the planting pit. Page 53 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Red maple (Acer rubrum)Height13.6 inDBH/QMD:5450 ft 15 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (73%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Good Fair Good Recommendations: Retain with Protection. Clearance pruning may be required for construction. Notes: This tree is growing within a 5 x 5’ planting pit. The planting pit grate is beginning to contact the lower trunk. There is pavement displacement surrounding the planting pit. Page 54 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Green ash (Fraxinus pennsylvanica)Height10.9 inDBH/QMD:5550 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (53%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Poor Fair Fair Recommendations: Retain with protection. Consider Emerald Ash Borer (EAB) preventative treatment. Notes: EMERALD ASH BORRER VULNERABILITY CONSIDERATIONS. This tree is growing within a narrow median planting strip and is surrounded by herbaceous ground covers. An electrical outlet box is present within the planter and near the tree. The tree exhibits diminished vigor throughout the canopy. Page 55 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Green ash (Fraxinus pennsylvanica)Height12.7 inDBH/QMD:5650 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (53%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Poor Fair Fair Recommendations: Retain with protection. Consider Emerald Ash Borer (EAB) preventative treatment. Notes: EMERALD ASH BORRER VULNERABILITY CONSIDERATIONS. This tree is growing within a narrow median planting strip and is surrounded by herbaceous ground covers. An electrical outlet box is present within the planter and near the tree. The tree exhibits diminished vigor throughout the canopy. Page 56 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Green ash (Fraxinus pennsylvanica)Height15.6 inDBH/QMD:5755 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (53%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Poor Fair Fair Recommendations: Retain with protection. Consider Emerald Ash Borer (EAB) preventative treatment. Notes: EMERALD ASH BORRER VULNERABILITY CONSIDERATIONS. This tree is growing within a narrow median planting strip and is surrounded by herbaceous ground covers. An electrical outlet box is present within the planter and near the tree. The tree exhibits diminished vigor throughout the canopy. Page 57 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Green ash (Fraxinus pennsylvanica)Height15.6 inDBH/QMD:5855 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Fair (53%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Poor Fair Fair Recommendations: Retain with protection. Consider Emerald Ash Borer (EAB) preventative treatment. Notes: EMERALD ASH BORRER VULNERABILITY CONSIDERATIONS. This tree is growing within a narrow median planting strip and is surrounded by herbaceous ground covers. An electrical outlet box is present within the planter and near the tree. The tree exhibits diminished vigor throughout the canopy. Page 58 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Green ash (Fraxinus pennsylvanica)Height10.4 inDBH/QMD:5955 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Poor (46%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Poor Poor Fair Recommendations: Retain with protection. Consider Emerald Ash Borer (EAB) preventative treatment. Notes: EMERALD ASH BORRER VULNERABILITY CONSIDERATIONS. This tree is growing within a narrow median planting strip and is surrounded by herbaceous ground covers. An electrical outlet box is present within the planter and near the tree. The tree exhibits diminished vigor throughout the canopy. Page 59 of 60 UFS|BC ● City of Renton Market/Piazza Project ● ISA Level 2 Basic Assessment Matrix October 08, 2024 Tree ID:Dripline Ave. (r)Species:Green ash (Fraxinus pennsylvanica)Height12.8 inDBH/QMD:6055 ft 18 ftStems:1Risk Assessment Summary Risk Assessment ComponentsRisk Rating: Low Target(s):Assessment Time Frame: 3 years This document has been prepared specifically for the above-named project and is likely part of a larger set of data. This sheet should be used in conjunction with the written report and should not be used without the approval and participation of the F.A. Bartlett Tree Expert Company. Residual Risk (see recommendations): Tree Parts(s) of Concern: None Condition Rating:Poor (46%) ConsequencesLikelihood of Failure Likelihood of ImpactHealthStructureForm Poor Poor Fair Recommendations: Retain with protection. Consider Emerald Ash Borer (EAB) preventative treatment. Notes: EMERALD ASH BORRER VULNERABILITY CONSIDERATIONS. This tree is growing within a narrow median planting strip and is surrounded by herbaceous ground covers. An electrical outlet box is present within the planter and near the tree. The tree exhibits diminished vigor throughout the canopy. Page 60 of 60 GENERAL TREE PROTECTION GUIDELINES With Tree Preservation Zone (TPZ) Explanation Attachment This document is general guidance only. The guidelines below are not intended to be used in isolation outside of the direct guidance from a qualified arboricultural consultant. Detailed advice from an appropriate expert in relation to specific circumstances should always be sought before any tree protection action is taken or refrained from. 1. Responsibilities: These guidelines apply to work provided by all contractors and subcontractors on the project. These Guidelines pertain to any disturbance, use, or activity within the Tree Preservation Zone (TPZ) of any retained tree on this project. See the attached Tree Preservation Zone (TPZ) Explanation for reference. The owner’s arborist, general contractor, and municipal representative shall meet on site before any site work begins to review the tree protection plan and confirm the planned methods to be used to protect the trees identified for preservation during construction. The project consulting arborist shall be contacted prior to any work that may need to enter the TPZ. Three (3) working days’ notice shall be provided to the project consulting arborist. A proposed method for work near any retained trees 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. The project consulting arborist 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 required soil treatments, mulch, and tree protection barriers are installed. All assessed trees to be retained within these areas shall be clearly illustrated in the final Site Plan(s). 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 must be completed with great care to avoid any damage to the trunks, branches, and Tree Protection Zones (TPZ) of the retained trees. 4. The Tree Assessment and Protection Site Plans and Clearing and Grading Plans show the recommended location of the Specified Tree Protection Zone (STPZ), Tree Protection Fencing, and any other tree protection treatments. Immediately after the clearing limits and grading stakes are set in the field, the owner’s arborist, during review and discussion with the contractor, may make a final determination on the tree protection requirements depending on construction limits and impact on major roots and soil condition. The arborist UFS|BC ● General Tree Protection Guidelines with TPZ Explanation Page 2 of 5 Urban Forestry Services, | Bartlett Consulting ● A Division of The F. A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA ● 1(360)399-1377 ● www.bartlett.com may adjust clearing limits in the field so that, in their opinion, tree roots and soils are protected while necessary work can proceed. 5. The Tree Protection Fencing (TPF) shall be installed in the locations shown on the Tree Assessment and Protection Site Plan(s), with special consideration of the Specified Tree Protection Zone (STPZ) of trees to be preserved. The TPF shall be constructed with steel posts driven into the ground with 6-ft. chain link cyclone fence attached. Other methods and materials may be used if specified in the approved tree protection plan (TPP). Upon consultation with the contractor, the project consulting arborist shall determine the final placement of the fence and the extent and method of clearing that may be done near preserved trees. Additional follow-up determinations may be required as work progresses on the project. No parking, storage, dumping, or burning of materials is allowed beyond the clearing limits or within the TPF. The TPF shall not be moved without authorization by the project’s consulting arborist or municipal representative/arborist. The TPF shall remain in place for the duration of the project, unless temporary adjustments are approved as part of the TPP. Tree protection signs shall be posted on all outer-facing sides of the fencing at 15-foot intervals. (See guideline 10 below for signage guidance) Work within the tree protection fencing area shall be reviewed with and approved by the project’s consulting arborist. Call Urban Forestry Services | Bartlett Consulting at 360-399- 1377 with questions. 6. Trunk Protection: In some restricted or tight areas of the site, standard TPF may not be feasible or effective. Construct plywood trunk protection around the retained trees where construction is near or within the Critical Root Zone (CRZ), as specified in the approved TPP and on the Tree Assessment and Protection Site Plan(s). Construct the trunk protection out of four (4), 4-foot x 8-foot sheets of plywood, on end, fastened at the corners, forming a box around the trunk. Tree protection signs shall be posted on all sides of the plywood box structure. (See guideline 10 below for signage guidance) 7. Branch Protection: Install branch protection where the likelihood of heavy equipment or temporary infrastructure (i.e., scaffolding) damaging lateral branches of protected trees is high. Branch protection may consist of a closed-cell foam padding material wrapped around the exposed lateral branches above or within the vicinity of construction activity. Pruning may be allowed if approved by an ISA Certified Arborist® in advance. Alternatively, branches may be tied back out of the way of construction work. 8. Silt Fence: If a silt fence is required to be installed within the TPZ of a protected 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. UFS|BC ● General Tree Protection Guidelines with TPZ Explanation Page 3 of 5 Urban Forestry Services, | Bartlett Consulting ● A Division of The F. A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA ● 1(360)399-1377 ● www.bartlett.com 9. TPZ over Surfacing: Where the STPZ includes an area covered by surfacing (concrete, asphalt, pavers, etc.), the TPF can be placed along the edge of the surfacing if or until it is removed or altered. After hardscape removal, the remaining TPZ should be backfilled with topsoil up to 6 inches deep and incorporated into the soil (if no roots will be damaged in the process), and protected with the TPF. The incorporation of topsoil into the existing subgrade shall be determined by the consulting arborist. Where applicable, a specification for topsoil can be provided or approved by UFS|BC. If alterations or improvements are being made to the existing surfacing, alternative no-dig, and low-impact development (LID) methods should be prioritized over traditional more impactful methods. All surfacing changes shall be reviewed and approved by the project’s consulting arborist, and incorporated into the final approved TPP. 10. Tree Protection Signs shall be attached to the outside of tree protection fencing and plywood trunk protection at 15-foot intervals and on all sides/aspects. Signage shall be shown as required on the site plan(s). The signage should read “TREE PROTECTION FENCE. DO NOT ENTER THIS AREA. DO NOT PARK OR STORE MATERIAL WITHIN THE PROTECTION AREA.” 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 on the signs. A bilingual UFS|BC branded sign is attached for ease of availability and production. This sign can be readily printed on weather-resistant sign material and fastened to the tree protection fencing or plywood trunk protection panels. Custom versions of this sign can be provided upon request to include alternative messaging, QR codes linking to specific project information/plans and interactive details, etc. 11. Soil Protection within the Tree Preservation Zone (TPZ): four (4) inches of wood chip mulch shall be placed over all exposed and protected soil within the STPZ of all retained and protected trees (not including hardscape surfaces). A biodegradable coir mat netting is recommended to be placed on the existing grade before woodchip placement to protect the condition and mark the location of the existing grade. The netting is a valuable benchmark that defines the original grade in the event that the woodchips within the STPZ are removed or altered. If left, coir netting will degrade over time. Where vehicular access, materials storage, or staging is required within the STPZ, temporary work pads or storage pads are required within the STPZ of all protected trees that are not already protected with hardscape; the soil shall be protected with 12 inches of woodchips and ¾-inch plywood or 1-inch metal sheets to protect from soil compaction and damage to roots of retained trees. 12. Landscape Plans, Irrigation Design, and Installation Details: Great care shall be exercised when landscaping within the TPZ of any tree. Roots of preserved trees and other vegetation shall not be damaged by planting or installation of irrigation lines. The owner’s consulting arborist shall review the Landscape Plan for any potential design and tree preservation conflicts and approve related irrigation and landscape installation activities within the TPZ of retained trees. A proposed method for work shall be provided to and approved by the consulting arborist. UFS|BC ● General Tree Protection Guidelines with TPZ Explanation Page 4 of 5 Urban Forestry Services, | Bartlett Consulting ● A Division of The F. A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA ● 1(360)399-1377 ● www.bartlett.com 13. Backfill and Grade Changes: The owner’s arborist will determine to what extent backfilling may be allowed within the STPZ of a preserved tree and if needed, the specific material which may be used. Grade cuts are usually more detrimental than grade filling within the TPZ and must be reviewed by the arborist well in advance of construction. 14. Tree Maintenance and Pruning: Trees recommended for maintenance and approved by the owner may be pruned to provide clearance, improve structure and form, mitigate risk, etc., as recommended for safety, site and construction access and building clearance, or aesthetics. Of specific concern are tree branches over construction access points; obstructing branches shall be properly pruned or tied back before damage can occur. An International Society of Arboriculture Certified Arborist® shall complete all pruning. ANSI A300 American Standards for Pruning shall be used. Branches 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. 15. Underground Utilities: Utility installation within the STPZ of any protected 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 CRZ of a retained tree is not typically allowed. See TPZ Explanation to differentiate between the CRZ and other Tree Protection Zones. An Air Spade or Air Knife and Vacuum Truck may be required when utility installation is mandatory near a retained tree or other methodology such as trenchless excavation. The method of utility installation shall be determined on a case-by-case basis after a review of the depth, width, and location of the proposed impact. 16. Root Pruning: Required work may result in the cutting of roots of protected trees. Cutting roots 2 inches or greater must be avoided. Potential root pruning needs must 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, pruning shears, or other appropriate cutting implements. 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 TPZ. Soil excavation within the STPZ shall be under the direct supervision of the project’s consulting arborist. 17. Supplemental Tree Irrigation: If clearing is performed during the summer, supplemental watering and/or mulch over the root systems within the STPZ of protected trees may be required by the project’s consulting arborist. The consulting 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 fine root growth. Long periods of slow drip irrigation are typically the most effective and efficient, though watering bags may be an effective method for some street trees. A large coil of soaker hose starting at least 18 inches from the trunk and covering the Interior Tree Protection Zone area UFS|BC ● General Tree Protection Guidelines with TPZ Explanation Page 5 of 5 Urban Forestry Services, | Bartlett Consulting ● A Division of The F. A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA ● 1(360)399-1377 ● www.bartlett.com is recommended. Water once per week and check soils for at least 12 inches of infiltration. This work shall be under the direct supervision of the owner’s consulting arborist. 18. Additional Measures: Additional tree protection recommendations may be required and may be specified in UFS|BC report(s), plans, and details. In addition, the pertinent regulatory city/municipal/county may require additional tree, plant, and soil protection measures not specified here that will need to be implemented. 19. Final Inspection: The owner’s consulting arborist shall make a final site visit to report on retained tree condition following completed work and shall report to the city. TREE PROTECTION ZONE (TPZ): The defined area around a tree within which certain activities are prohibited or restricted to prevent or minimize potential damage to tree parts, roots and/or soil, during construction or development activities. The TPZ may encompass the CRZ and be based on the judgment of the project arborist. a.CRITICAL ROOT ZONE (CRZ): The CRZ of a tree is a planar model for the area of soil around a tree’s trunk where the minimum volume of roots considered critical to the structural stability and/or health of the tree are generally located. Root systems will vary both in depth and spread depending on the size of the tree, soils, water table, species, and other factors. While there is no universally accepted method for calculating the CRZ, UFS|BC calculates the CRZ using trunk diameter measured at 4.5 feet above grade (DSH). The CRZ is a generalized circular area that has a radius of 6 inches to every inch trunk diameter. As a generalized model, the CRZ is often shown as a simple geometric shape (circle) and is used as a guide from which the specified TPZ is established. b.CALCULATED TREE PROTECTION ZONE (CTPZ) – The CTPZ of a tree is also a planar model for the area of soil around a tree’s trunk where critical roots are expected to reside. Root systems will vary both in depth and spread depending on the size of the tree, soils, water table, species, and other factors. The CTPZ is calculated using trunk diameter (DSH) and a multiplication factor derived from analysis of the tree’s species tolerance to construction impacts and the tree’s relative age. As a generalized model, the CTPZ is often shown as a simple geometric shape (circle) and is used as a guide from which the specified TPZ is established. c.SPECIFIED TREE PROTECTION ZONE (STPZ) – The STPZ accounts for real-world factors and is adjusted in size and shape by the project arborist to accommodate existing infrastructure, planned construction, and specific aspects of the site. Tree canopy conformation, visible or discovered root orientations, size, condition, maturity, and species response to construction impacts are also considered by the project arborist when determining an effective STPZ. The CRZ and CTPZ are typically used to inform the STPZ. Tree Trunk TPZ – The TPZ may encompass the CRZ and will vary according to site and tree condition and growth factors. a.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. b.CTPZ – The greater the disturbance allowed in this area; the greater post-care treatments are required. TREE PRESERVATION ZONE (TPZ) EXPLANATION TPZ - 01 Not to scale All information above is based on ANSI A300 Part 5 and the companion BMP (Third Edition); some terms have changed slightly in their meaning from older standards and approaches to tree protection (i.e., CRZ). © Urban Forestry Services | Bartlett Consulting – A Division of The F. A. Bartlett Tree Expert Company, July 2023. This document has been prepared specifically for UFS|BC related projects and may not be suitable for use on other projects, or in other applications, and/or without the approval and participation of The F.A. Bartlett Tree Expert Company. c.STPZ – A more practical and realistic reflection of critical protection. The need for post-care treatments will vary. 15119 McLean Road Mount Vernon, Washington 98273 1 (360) 399-1377 Urban Forestry Services | Bartlett Consulting ● A Division of the F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA ● 1(360)399-1377 ● www.urbanforestryservices.com UFS|BC TREE PROTECTION SIGNAGE SPECIFICATIONS AND INSTALLATION INSTRUCTIONS 1. Tree Protection Signs must be attached to tree protection fencing only (do not attach to trees or other vegetation) and must be shown as required on plans and construction documents. 2. Install and secure tree protection fencing per the placement and specifications outlined in the project’s tree protection plan. 3. Signs may be produced by a professional sign service or printed and laminated by the contractor or other project representative(s). • Print signs at full scale - minimum 11”x17” (Tabloid), landscape orientation. • Print signs in full color using the attached source document colors. • Sign material and printed content must resist normal and expected weather for the life of the project – i.e., rainwater, freeze-thaw events, solar radiation, wind, etc. • If the sign is printed and laminated with clear plastic, all edges must be adequately sealed with laminate to prevent water incursion, and the laminate must be thick enough to support the attachment points. 4. Affix signs to tree protection fencing using zip ties, wire, or other substantial and secure materials/methods at the dashed attachment circles shown in the corners. Whatever material or method is used for attachment, it must withstand normal and expected weather for the life of the project. 5. Place signs every 15 feet at the upper half of the fence line. Signs should be visible and obvious to construction personnel, especially equipment operators, and should be visible from nearby roadways (if applicable) and site access points. 6. Signs must remain in place and be maintained in clear, readable condition for the life of the project. Upon discovery, signs that become faded, damaged, or go missing must be replaced immediately. Signs may only be removed after fencing has been removed, per the project’s tree protection plan. 7. For questions and more information on these specifications and instructions, please contact Urban Forestry Services | Bartlett Consulting (UFS|BC) at 1(360)399-1377. Any concerns or questions call: Preguntas o Preocupaciones llamar a: TREE PROTECTION FENCE. DO NOT ENTER THIS AREA. DO NOT PARK OR STORE MATERIALS WITHIN THE PROTECTION AREA. CERCA DE PROTECCIÓN DE ÁRBOLES. NO ENTRAR A ESTA AREA. NO ESTACIONAR O GUARDAR MATERIALES ENTRE EL ÁREA PROTEGIDA. UFS|BC Company Info Urban Forestry Services | Bartlett Consulting @ 360-399-1377 Tree Risk Assessment Vocabulary Page 1 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Tree Risk Assessment Vocabulary Tree risk assessment has a unique set of terminology with specific meanings. A complete list of tree risk vocabulary and procedures may be found in the International Society of Arboriculture’s (ISA) Best Management Practice (BMP) for Tree Risk Assessment or the American National Standards Institute (ANSI) A300 Tree Risk Assessment Standard. The following information is provided to assist the owner/client with understanding some of the common industry phrases or language, and some of the procedures and methodologies associated with the industry language used in the proposal and/or report. Vocabulary Used Throughout Proposals and Reports Inspection interval is the recommended amount of time between inspections or assessments. Occupancy rates categorize the estimated time a target is physically within a target zone. Occupancy rate is classified as rare, occasional, frequent, or constant. Overall risk rating is the highest individual risk identified for the tree. Residual risk is the estimated level of risk that will remain after the recommended mitigation efforts to reduce the risk have been made. This estimate is provided to help the client understand that some level of risk may still exist and plan appropriately for future risk management. Risk is the likelihood of an event and its consequences. Risk rating for a tree or tree part is the combination of the likelihood of failure, the likelihood of impact, and the consequences. Time frame is the period the assessor uses in which to estimate the likelihood of failure in all categories except the “imminent” category. The use of a time frame is meant solely to help the assessor better determine the portions of the risk analysis which are time dependent. The owner/client should never consider the time frame a “guarantee period” for the risk assessment or that the tree will not fail or is safe within the stated time frame. Targets are people, property, or activities that could be injured, damaged or disrupted by a tree or tree part failure. Target occupancy rates are typically identified based on information obtained from the owner/client prior to conducting the assessment, as well as information gained during the limited time the assessor evaluates the tree and site. Targets, target zones, and occupancy rates may be adjusted based on observations during the assessment. Target zones are the areas where a tree or tree part is likely to land if it were to fail. The target zone(s) is determined in the field at the time of the assessment. Trees can generally be defined as a woody perennial plant with a single trunk, defined crown, and will reach a minimum height of 15 feet at maturity. Tree parts include branches, fruit, and trunks. Tree risk is the likelihood of a tree failure impacting a target and the severity of the consequences. Tree Risk Assessment Vocabulary Page 2 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Vocabulary Used Throughout Proposals and Reports Tree risk assessment is the systematic process used to identify, analyze, and evaluate tree risk. Tree risk assessments are conducted to assist the tree owner or client in better understanding the risk their trees pose so they can make management decisions to reduce or minimize those risks. Tree risk assessments focus on evaluating the structural integrity of the tree crown, branches, trunks, and roots and root collar. Tree risk assessors are trained arborists or qualified professionals with experience in performing tree risk assessments. Vocabulary Used to Communicate Occupancy Rates Constant indicates a target is present in the target zone at nearly all times, 24 hours a day, seven days a week. Frequent indicates a target is present in the target zone for a large portion of the day or week. Occasional indicates a target is present in the target zone infrequently or irregularly. Rare indicates a target zone that is not commonly used by people or other mobile/movable targets. Vocabulary Used to Communicate the Likelihood of Failure Imminent indicates that failure has started or is most likely to occur in the near future, even if there is no significant wind or increased load. Probable indicates that failure may be expected under normal weather conditions within the specified time frame. Possible indicates that failure could occur, but is unlikely under normal weather conditions within the specified time frame. Improbable indicates that failure is not likely during normal weather conditions, and it may not fail in extreme weather conditions within the specified time frame. Vocabulary Used to Communicate the Likelihood of Impacting a Target High indicates that a failed tree or tree part will most likely impact a target. Medium indicates the failed tree or tree part could impact the target but is not expected to do so. Low indicates that the failed tree or tree part is not likely to impact a target. Very low indicates that the likelihood of a failed tree or tree part impacting the specified target is remote. Vocabulary Used to Communicate the Likelihood of a Failure Impacting a Target Very likely to impact a target is reached by an imminent likelihood of failure and high likelihood of impact. Likely to impact a target can be reached by an imminent likelihood of failure and medium likelihood of impact; or probable likelihood of failure and high likelihood of impact. Somewhat likely to impact a target can be reached by one of the following combinations; an imminent likelihood of failure and low likelihood of impact; probable likelihood of failure and medium likelihood of impact; or possible likelihood of failure and high likelihood of impact. Tree Risk Assessment Vocabulary Page 3 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Vocabulary Used to Communicate the Likelihood of a Failure Impacting a Target Unlikely to impact a target can be reached by one of the following combinations; a possible or probable likelihood of failure and low likelihood of impact; possible likelihood of failure and medium likelihood of impact; improbable likelihood of failure with any likelihood of impact rating; or any likelihood of failure rating with very low likelihood of impact. Vocabulary Used to Communicate the Consequences of Failure and Impact Severe consequences could involve serious personal injury or death, high-value property damage, or major disruption to important activities. Significant consequences are those that could involve substantial personal injury, property damage of moderate to high value, or considerable disruption of activities. Minor consequences are those that are believed will only cause minor personal injury, low-to- moderate-value property damage, or small disruption of activities. Negligible consequences are those that are believed will not result in personal injury, will only involve low-value property damage, or disruptions that can be replaced or repaired. Vocabulary Used to Communicate Overall Risk Ratings Extreme risk applies in situations in which failure is imminent, there is a high likelihood of impacting the target, and the consequences of the failure are severe. 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. 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. Low risk situations are those for which consequences are negligible and likelihood is unlikely; or consequences are minor and likelihood is somewhat likely. Explanation of Tree Risk Levels The three levels of tree risk assessment defined in the ANSI A300 Tree Risk Assessment Standard are: I. Level 1: Limited Visual Assessment This level of assessment provides a visual assessment from a defined perspective (e.g., from the sidewalk, street, or aerial view) of an individual tree or population of trees to assess risk to specified targets from obvious defects or specified conditions. Level 1 assessments are typically performed to quickly assess large populations of trees or conduct a rapid assessment of an individual tree. The assessor views only one side of the tree while walking on a sidewalk, being unable to access a neighboring property, looking from a slow-moving car, or from above with a drone, helicopter, or airplane. A Level 1 assessment requires the client to identify the location and/or selection criteria of trees to be assessed. The assessor may: 1. Determine the most efficient route and document the route taken. Tree Risk Assessment Vocabulary Page 4 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com 2. Assess the tree(s) within the area from the defined perspective (e.g., walk-by or drive-by). 3. Record the location of trees that meet the defined criteria (e.g., significant defects or other conditions of concern). 4. Evaluate the risk (risk rating is optional). 5. Identify trees requiring a higher level of assessment (Level 2 or Level 3) and/or prompt action. 6. Submit risk mitigation recommendations and/or a report. Limitations: Level 1 assessments are the least thorough means of assessment. They are typically from one perspective, such as a walk-by, a drive-by, or aerial view. This level of assessment is most commonly used to prioritize higher-risk trees within larger groups of trees when there are budgetary, time, or other management constraints. Some defects or conditions will not be visible to the inspector, nor will all conditions visible at all times of the year; therefore, not all higher-risk trees will be accurately identified. In addition, the assessment may not provide enough information to assign a risk rating, make a risk mitigation recommendation, or determine residual risk. II. Level 2: Basic Assessment A Level 2 assessment is a detailed visual inspection of a tree and its surrounding site and a synthesis of the information collected. It requires a 360° ground-based inspection around a tree, including the site conditions, visible buttress roots, trunk, branches, and crown. The Level 2 assessment may include using tools such as binoculars, mallet, or probe at the discretion of the assessor or at the request of the owner/client. At this level, the assessor may: 1. Locate and identify the tree or trees to be assessed. 2. Determine the targets and target zone for the tree or tree part(s) of concern. 3. Review the site history and conditions, and species failure profile. 4. Assess potential load on the tree and its parts. 5. Assess general tree health. 6. Inspect the tree visually which may include the use of common tools such as binoculars, mallet, probes, and/or shovels, as specified in the Scope of Work. 7. Record observations of site conditions, defects, indicators of internal defects, and response growth. 8. If necessary, recommend a Level 3 advanced assessment. 9. Analyze data to determine the likelihood of failure, likelihood of impact, and consequences of failure to evaluate the degree of risk. 10. Develop mitigation options and estimate residual risk for each option. 11. Recommend a re-inspection interval. 12. Prepare and submit a report. Limitations: Level 2 assessments only include conditions and defects that can be detected from a ground-based visual inspection on the day of the assessment. Below-ground, internal, or upper-crown conditions, decay, and defects may not be detected. Tree Risk Assessment Vocabulary Page 5 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com III. Level 3: Advanced Assessment A Level 3 assessment is performed to provide detailed information about specific tree parts, defects, targets, or site conditions. These are usually conducted in conjunction with or after a Level 2 assessment with owner/client approval. Specialized equipment, data collection and analysis, and/or expertise are usually required for Level 3 assessments. At this level, the assessor may: 1. Locate and identify the tree or trees to be assessed. 2. Determine the targets and target zone for the tree or tree part(s) of concern. 3. Review the site history and conditions, and species failure profile. 4. Assess potential load on the tree and its parts. 5. Assess general tree health. 6. Inspect the tree and/or site using advanced techniques as specified in the Scope of Work. 7. Record results from advanced techniques. 8. Analyze data to determine the likelihood of failure, likelihood of impact, and consequences of failure to evaluate the degree of risk. 9. Develop mitigation options and estimate residual risk for each option. 10. Recommend a re-inspection interval. 11. Recommend other advanced assessments, if necessary. 12. Prepare and submit a report. *Items 1-5 may be included in the associated Level 2 assessment. Procedures and Methodologies Often Used for Level 3 Assessments Level 3 procedures and methodologies, which are referred to as technologies, may include: Procedure Methodology Aerial inspection and evaluation of structural defects in upper stems and branches • visual inspection from within the tree crown or from a lift • unmanned aerial vehicle (UAV) photographic inspection • decay testing of branches Detailed target analysis • property value of anything potentially impacted by tree failure • use and occupancy statistics • potential disruption of activities such as road blockage or an electrical outage Detailed site evaluation • history evaluation • soil profile inspection to determine root depth • soil mineral and structural testing Decay and wood analysis • increment boring • drilling with small-diameter bit • resistance-recording drilling • single path sonic (stress) wave • sonic tomography • electrical impedance tomography • radiation (radar, X-ray) • advanced analysis for pathogen identification Health evaluation • tree ring analysis (in temperate zone trees) • shoot length measurement • detailed health/vigor analysis Tree Risk Assessment Vocabulary Page 6 Urban Forestry Services | Bartlett Consulting ● Divisions of The F.A. Bartlett Tree Expert Company 15119 McLean Road, Mount Vernon, WA, 98273 ● 360.399.1377 ● www.urbanforestryservices.com Procedure Methodology • starch assessment Root inspection and evaluation • root and root collar excavation • root decay evaluation • ground-penetrating radar Storm/wind load analysis • detailed assessment of tree exposure and protection • computer-based estimations according to engineering models • wind reaction monitoring over a defined interval Measuring and assessing the change in trunk lean • visual documentation • digital level Load testing • hand pull • measured static pull • measured tree dynamics Limitations: Level 3 assessments that include specialized technologies may have uncertainty and require qualified estimations. Exact measures may not be feasible. Conclusion Regardless of the level of assessment conducted, every assessment is limited to the trees identified in the scope of work, conditions detectable at the time of the assessment, the level of communication with the owner/client, and other conditions that affect the assessor’s ability to collect information. Not all defects and conditions are detectable, and not all tree failures can be predictable. Trees are living organisms, and as such, every tree’s structural conditions change over time. The F.A. Bartlett Tree Expert Company 1290 East Main Street, Stamford, CT 06902 ● 203.323.1131 ● www.bartlett.com Terms for Commercial Consulting Services The F.A. Bartlett Tree Expert Company (“Bartlett Tree Experts”) provides tree-care and related consulting services to commercial and government clients. The agreed upon “Work” has been expressed in a separate Client Agreement between Bartlett Tree Experts and the Client, and is identified within the portion of the Client Agreement communicating the Scope of the Work, the Goals, the Specifications, the Schedule of the Work, and the Payment Terms. These terms combine with the approved Client Agreement and form the complete agreement between the parties. Article 1 TREE RISK 1.1 Tree Risk (a) The Client acknowledges that having trees on one’s property involves risk, including the risk that a tree or tree limb might fall. As part of the Work, Bartlett Tree Experts may recognize the risk posed by failure of trees within the scope of the Work and recommend to the Client ways to reduce that r isk, but the Client acknowledges that Bartlett Tree Experts cannot detect all defects and other conditions that present the risk of tree failure and cannot predict how all trees will respond to future events and circumstances. Trees can fail unpredictably, even if no defects or other conditions are apparent. Bartlett Tree Experts will not be responsible for damages caused by subsequent failure of a tree, or tree part, within or around the scope of the Work due to defects or other preexisting structural or health conditions. (b) Unless the Work includes having Bartlett Tree Experts perform a tree risk assessment for designated trees, the Client acknowledges that in performing the Work Bartlett Tree Experts is not required to conduct a tree risk assessment and report to the Client on risks to, and risks posed by, trees on or near the Client’s property. (c) The Client also acknowledges that because trees are living organisms that change over time, the best protection against the risk associated with having trees on the Client’s property is for the Client to arrange to have a qualified tree risk assessment arborist conduct a tree risk assessment in accordance with industry standards periodically and after each major weather event to identify any defects or other conditions that present the risk of tree or limb failure and the potential consequences o f such failure. Then, once a tree risk assessment is performed, the Client should review any possible defects or conditions that present the risk of failure and request recommendations for, and implement, remedial actions to mitigate the risks. Article 2 THE WORK 2.1 Ownership The Client states that all trees and other vegetation within the Scope of Work are owned by the Client or that the Owner has authorized the Client to include them within the Scope of Work. 2.2 Specified Trees or Work The specific trees, shrubs, plant materials or work described in the Scope of Work or in the Agreement will be the only trees, shrubs, plant materials, or work included in the scope of the consultative services or Work performed by Bartlett for the Client. 2.3 Insurance (a) Bartlett Tree Experts states that it is insured for liability resulting from injury to persons or damage to property while performing the Work and that its employees are covered under workers’ compensation laws. (b) The scope of ongoing operations of the Work shall be defined as beginning when the performance on the site begins and ending when the performance on the site concludes. 2.4 Compliance Bartlett Tree Experts shall perform the Work competently and in compliance with the law and industry standards, including the American National Standards Institute’s A-300 Standards for tree care. 2.5 Access Over Roads, Driveways, and Walkways The Client shall arrange for Bartlett Tree Experts’ representatives, vehicles, and equipment to have access during working hours to areas where the Work is to be performed. The Client shall keep roads, driveways, and walkways in those areas clear during working hours for the passage and parking of vehicles and equipment. Unless the Client Agreement states otherwise, Bartlett Tree Experts is not required to keep gates closed for animals or children. Terms for Commercial Consulting Services March 2022 ● Page 2 of 8 The F.A. Bartlett Tree Expert Company 1290 East Main Street, Stamford, CT 06902 ● 203.323.1131 ● www.bartlett.com 2.6 Personnel Bartlett Tree Experts will determine and provide the correct Bartlett personnel for completing the Work based scope of the project, the expertise needed, and the geographic location of the work, in order to meet the goals of the Client . 2.7 Accuracy of Information Provided By the Client or By Third Parties Acting on Behalf of the Client (a) The Client acknowledges that Bartlett Tree Experts cannot be held responsible for the accuracy of or content of information provided by the Client or third parties acting on behalf of the Client, including but not limited to; the legal description of the property, issues of title and/or ownership of the property, software programs, property and property line locations and/or boundaries, or other pieces of information provided which are integral to the final outcome of the consulting Work. (b) The Client agrees to correct any errors in any such inaccurate information that it or any third party acting on its behalf, provides Bartlett Tree Experts, once the inaccuracy is known, if such information will be necessary for Bartlett Tree Experts to base its final analysis, management plans, written reports, information or recommendations on for the finalization of the Work. 2.8 Information Provided By Reliable Sources In certain circumstances, Bartlett Tree Experts may need to engage outside reliable sources to provide specialized information, cost estimates, or opinions. Bartlett Tree Experts will make every effort to engage reputable and reliable sources, and will communicate the use of these sources to the Client if such sources are used to help determine an integral part of the Work. 2.9 Tree Locations, Maps, Sketches, and Diagrams The Client acknowledges that Bartlett Tree Experts may use several means and methods to provide tree locations on maps, sketches, or drawings, and that the use of tree locations on maps, sketches, diagrams, and/or in pictures are intended to aid the Client in understanding the deliverables provided, and may not be to scale and should not be considered precise locations, engineering surveys, or architectural drawings. 2.10 Global Positioning Systems The Client acknowledges that all global positioning system (GPS) devices used to locate trees, shrubs, and plant material, have some accuracy limitations, and regardless of the methodologies or software programs used to enhance the accuracy of the locations, there will always be some level of meter or sub meter locational discrepancies within any deliverable product. 2.11 Advice, Opinions, Conclusions, and Recommendations (a) The Client Acknowledges that all advice, opinions, conclusions, and recommendations provided represent the professional objective opinion(s) of Bartlett Tree Experts; which are in no way predetermined, or biased toward any particular outcome. (b) The Client acknowledges that all advice, opinions, conclusions, and recommendations provided verbally or in written format such as email, management plans, or reports will be based on the present status of the tree(s), property(s), environmental conditions, and industry standards. Any advice, opinions, conclusions, and recommendations provided do not take into account any future changes in environmental conditions or changes to current industry standards which are unknown and unforeseen at the time the Work is performed. 2.12 Tree Risk Assessments and Inventories (a) If the Client Agreement is specifically for Bartlett Tree Experts to provide a Level 1 Limited Visual, Level 2 Basic, or Level 3 Advanced assessment of tree risk for any tree or group of trees for the Client in accordance with industry standards, the Client understands that any risk ratings and recommendations for mitigating such risks will be based on the observed defects, conditions, and factors at the time of the tree risk assessment or inventory. (b) The Client acknowledges that any recommendations made to mitigate risk factors will be made in accordance with industry best practices and standards, but that the decision to implement the recommended mitigation or remove the risk factors rests solely with the Client. (c) The Client understands that all risk ratings used are intended to assist the Client with understanding the potential for tree or tree part failure, and are not meant to be used to declare any tree or tree part to be safe or free from any defect. As such, the Client should not infer that any tree not identified as having an imminent or probable likelihood of failure, or not identified with a moderate, high, or extreme risk rating, or not having a condition rating of poor or dead is “safe” or will not fail in any manner. (d) The Client understands that it is the Client’s responsibility to ensure that the assessed tree or trees are reassessed periodically, or after any major weather event, in order to ensure that risk rating information is kept current, and to enter any changes to risk ratings or mitigation measures to the inventory or tracking system used by the Client. Terms for Commercial Consulting Services March 2022 ● Page 3 of 8 The F.A. Bartlett Tree Expert Company 1290 East Main Street, Stamford, CT 06902 ● 203.323.1131 ● www.bartlett.com 2.13 Tree or Plant Value Appraisals (a) The Client acknowledges that tree appraisal is not an exact science. If the Client Agreement is for Bartlett Tree Experts to provide the Client with an appraisal estimate of cost or value, or estimated tree asset value, for specified trees or plant materials, the Client understands that those estimates will be based on a combination of visible conditions at the time of appraisal, information or pictures provided by the Client, local knowledge, information and/or cost estimates provided by local nurseries or plant wholesalers, information and/or costs provided by tree care or landscape installation and maintenance companies, industry best practices , and/or asset value software. (b) The Client understands that while any such appraisal will be based on one or several accepted industry methods of appraising plant material values, the appraised values provided may or may not be accepted as the final value by third parties, or decision makers in disputes over plant values, such as courts, arbitrators, insurers, or mediation efforts. 2.14 Local and Tree-Related Permits Unless the Client Agreement states differently, the Client is responsible for obtaining and paying for all required local or tree related permits required. If the Work stated in the Client Agreement involves Bartlett Tree Experts submitting for, or assisting the Client in submitting for, any kind of local or tree-related permit, the Client understands that Bartlett Tree Experts cannot guarantee the successful outcome. If Bartlett Tree Experts submits a local or tree permit application on behalf of the Client, the Client must provide all necessary information for Bartlett to make such a submittal, and the Client will be responsible for paying for, or reimbursing Bartlett Tree Experts for, all fees and expenses related to the application process, regardless of the outcome. 2.15 Expert Witness and Testimony The Client acknowledges that unless the Scope of Work in Client Agreement is specifically to perform Expert Witness services and testimony for the Client, then nothing in the Client Agreement will obligate Bartlett Tree Experts to perform Expert Witness services or provide expert testimony for or on behalf of the Client. 2.16 Environmental Benefits Analyses (a) The Client understands that Bartlett Tree Experts may use one or more software, or other programs, developed by other companies or government agencies, which are designed to help provide estimates on the environmental benefits of trees, shrubs, or other plant materials if the Work involves providing an environmental benefit a nalysis for the Client. (b) The Client acknowledges that while Bartlett Tree Experts will be responsible for the correct collection and input of data into any such software or other program used to help estimate environmental benefits of trees, shrubs, and other plant materials, the determinations of the data made by any such program may vary based on the method, software, type, year, or version used at any given time. The Client understands that any such method, software, type, year, or version used is meant to provide a sound, scientific method to help the Client understand the environmental benefits of the collected data. 2.17 Tree and Property Hazards and Safety Issues The Client understands that in no way does Bartlett Tree Experts imply, nor should the Client infer that Bartlett Tree Experts assumes the responsibility for assessing, identifying, reporting, and/or correcting tree or property hazards or safety issues on or near the Client’s property, or conducting tree risk assessments, for which the Client Agreement does not specify, during the course of any of its ongoing consultative or other activities related to this Agreement. 2.18 Remote Sensing and Tree Canopy Analyses (a) If the Work requires Bartlett Tree Experts to evaluate aerial imagery to classify land cover classes, classify random points, or create or manipulate shapefile boundaries, the Client understands that certain factors can prohibit the accuracy of the final Work product, such as; the availability of imagery, files, and shapefiles for the property or site from reliable sources, the accuracy and quality of imagery, files, or shapefiles obtained from reliable sources or provided by the Client, the date of when the imagery, files, or shapefiles were taken or created, and the ability for a person to visually discern the difference between the pixels of aerial imagery. (b) If such factors inhibit the accuracy of the Work, Bartlett Tree Experts may choose to conduct visual analyses, or use other means, to verify or classify points or imagery into the required specifications. If such alternate methods are used, Bartlett Tree Experts will communicate the use of such methods to the Client in the final work product. If it is not possible or feasible to use alternative methods, then the Client acknowledges that the final wo rk product may have some gaps in accuracy. 2.19 Use of Drones and Drone-Related Equipment (a) If the Work specifies the use of Drones or Drone-related equipment to help collect information, the Client acknowledges that in some cases the use of Drones and Drone-related equipment can provide detailed information, Terms for Commercial Consulting Services March 2022 ● Page 4 of 8 The F.A. Bartlett Tree Expert Company 1290 East Main Street, Stamford, CT 06902 ● 203.323.1131 ● www.bartlett.com imagery, views, and pictures of a tree(s) or property(s); however, in some cases, not all aspects of a tree(s) or property(s) can be seen or accessed by a Drone. The Client understands that this technology can be limited and should not be used by the Client as the sole decision-making criteria, but rather one of many factors used by the Client in the decision-making process. (b) The Client agrees that other methods of obtaining the required information must be included in the Client Agreement , and may be required to be utilized, in addition to or separate from the use of Drones or Drone related equipment in the event that the limitations are too severe to perform the required Work . 2.20 Decay and Wood Analysis Devices (a) The Client acknowledges that all decay and wood analysis devices have limitations, and the use of any such device should be used to supplement information regarding the decay or structural deficiencies within a tree(s), and not as the sole source of information. (b) If the Work requires the use of a decay or wood analysis device, unless the Client Agreement specifies the type of device, Bartlett Tree Experts will decide the most appropriate type of decay and/or wood analysis device to use based on the conditions present and the information needed to supplement and complete the Work. (c) The Client acknowledges and understands that the presence of decay or other structural weaknesses, such as air pockets, voids, cracks, burned wood, or other structural deficiencies, will more than likely lead the inspecting arborist to the same result with respect to the determination made on the overall structural integrity of the tree in question based on results from the decay and/or wood analysis device used, so the presence of any of these items in sufficient quantities will preclude the need to verify the presence of another, and in many cases it may not even be necessary for the type of device used to distinguish between the specific types of structural issues for the arborist to make a determination given all other objective evidence. 2.21 Diagnostic Services Bartlett Tree Experts may offer diagnostic services as a means of attempting to isolate certain plant pest or soil problems for the Client, and determining the most logical possibility as to the cause of the condition of the trees, shrubs, or plants in question. The Client understands that in some cases government quarantines may prohibit samples from being sent to a diagnostic clinic, and in some cases, determinations on samples may be inconclusive. 2.22 Tree Preservation, Tree Protection, and Construction and Site Monitoring (a) If the Work includes Bartlett Tree Experts conducting or providing tree preservation or tree protection evaluations, tree impact evaluations, recommendations, specifications, and/or documents required by the governing agency, the Client understands that Bartlett Tree Experts will review the project, materials or plans that are provided by the Client, combined with industry best practices and current tree conditions, to arrive at the recommendations and specifications. The Client also understands that trees are living organisms and that even following all industry best practices and specifications cannot guarantee that a tree will survive construction impacts , which may include but are not limited to soil compaction, root damage, inadequate soil moisture, and decrease in tree stability . (b) If the Work includes Bartlett Tree Experts conducting or providing tree monitoring during project construction, the Client understands that Bartlett Tree Experts will review the project, materials, or plans that are provided by the Client and/or described by the Client representative at the site, and provide recommendations to the Client to assist with tree preservation or protection, but that the Client will be responsible for ensuring the implementation of such recommendations by the Client or any third parties. 2.23 Irrigation and Recycled Water Analyses If the Work requires Bartlett Tree Experts to provide irrigation or recycled water analyses as a means of aiding the Client with their tree care needs, the analyses will be provided using the best known site conditions, the best available water quality information, or the best available water quality test results provided to Bartlett Tree Experts; however, the Client acknowledges that Bartlett Tree Experts cannot provide information on water source, delivery systems, water chemistry, water quality testing methodology, or distribution systems. 2.24 Bird, Water Fowl, and Wildlife Habitat Analyses If the Work requires Bartlett Tree Experts to provide bird, water fowl, and wildlife habitat analyses or identifications as a means of aiding the Client with their tree care needs and wildlife considerations, the analyses will be based on known site conditions and available industry bird, waterfowl, and wildlife management information. 2.25 Endangered or Protected Species and Habitats (a) If the Work is for Bartlett Tree Experts to identify trees or plant materials that may be endangered or protected species, or to identify trees or plant materials that may be primary or secondary habitat for endangered or protected species, or to provide any analysis for a project that may affect any endangered species or protected species or its habitat, then Bartlett Tree Experts will base all reports and information on the existence of any known endangered or Terms for Commercial Consulting Services March 2022 ● Page 5 of 8 The F.A. Bartlett Tree Expert Company 1290 East Main Street, Stamford, CT 06902 ● 203.323.1131 ● www.bartlett.com protected species and known habitats using government approved endangered or protected species or habitat information. (b) The Client acknowledges that Bartlett Tree Experts cannot be responsible for identifying unknown endangered species or habitats. 2.26 Wetland and Riparian Habitat Mapping The Client understands that if the Work involves wetland or riparian habitat mapping, such maps will require the Client to provide the tree or plant species considered to be the primary or secondary habitat for the specific species of animal in question, and such maps will be limited to the species information provided as it overlays within the known designated wetland areas. 2.27 Representation Services If the Work involves a member of Bartlett Tree Experts acting as a representative for, or decision-maker for, the Client, including but not limited to activities such as reviewing, approving or declining tree-related permits, plants, designs, or selections submitted by third parties, then the Client agrees to be the final decision -maker in the event of a third party appeal of an adverse decision or recommendation made by Bartlett Tree Experts with respect to granting or denying a tree related permit, plant, design, or selection submitted by a third party. The Client also agrees to defend Bartlett Tree Experts against any claims made by third parties regarding such decisions or recommendations, and represent the decisions and recommendations of Bartlett Tree Experts, as if such decisions or recommendations were made by the Client. 2.28 Integrated Pest Management (a) If the Work includes consultation for integrated pest management services, the Client understands that the final product may involve recommendations for plant health care treatments that will be tailored to meet the Client’s needs for specific trees, shrubs, turf areas, or plants. In creating these recommendations, Bartlett Tree Experts will consider the Client’s objectives, priorities, budgetary concerns, plant materials, site conditions, pest and disease infestation levels and the expectations of those levels, and timing issues. (b) The Client acknowledges that such recommendations may involve one or more inspections of specific plants to help determine insect and disease concerns, the sampling of specific plant materials or soil areas, an understanding of the cultural needs of certain plants, consideration of biological control concepts and limitations (natural and/or introduced predators), recommended improvements to physical site conditions, or the use of pesticide treatments. The integrated pest management service does not combine all possible controls and concepts for every tree, shrub, turf area, or plant, but rather it considers the most reasonable option or options for control of and mitigation of insect and disease damages to the specific trees, shrubs, turf areas or plants as designated by the Client to meet the Client’s goals. (c) The Client understands and acknowledges that during the course of an integrated pest management program, as inspections are taking place, and treatments or other services are being performed to certain trees or shrubs, not every tree or shrub inspected will require a specific treatment or other service, and in fact, some trees or shrubs may not require any specific treatment or other service throughout the course of a season to maintain health and vigor if the inspections show insignificant pest thresholds, and sound environmental and cultural conditions. (d) The Client also understands that tree, shrub, plant and turf inspections conducted during the integrated pest management program are for the purpose of determining plant health issues and, insect and disease thresholds; and are not conducted for the purposes of determining tree, shrub, plant, or turf safety. 2.29 Plant Species Selection If the Work involves Bartlett Tree Experts providing advice and guidance on plant species selection to aid the Client with their landscape site needs, Bartlett Tree Experts will provide the advice and guidance based on the known site conditions, the available plant species locally at the time, and the plant species characteristics. The Client will be responsible for the planting and maintenance, and ensuring the survival of such plant selections in the landscape. 2.30 Trees and Subsidence Analyses (a) If the Work involves Bartlett Tree Experts providing an analysis of the relationship between certain trees or tree parts and the subsidence or movement of a building or structure, the Client understands that certain inferences and assumptions will be made given the location, visibility, soil and drainage conditions, size, species, and condition of the tree or trees, and other factors, in order to perform the Work in the least intrusive manner possible. (b) Bartlett Tree Experts recommends that the Client reviews any tree related report recommendations, prior to having the work completed, with their structural engineer or other qualified building contractor to help the client determine any potential adverse impact to the buildings or structures. Terms for Commercial Consulting Services March 2022 ● Page 6 of 8 The F.A. Bartlett Tree Expert Company 1290 East Main Street, Stamford, CT 06902 ● 203.323.1131 ● www.bartlett.com 2.31 Investigation of Covenants, Easements, Constraints, or Restrictions The Client is responsible for investigating and identifying to Bartlett Tree Experts any covenants, easements, constraints, or other restrictions to the title or deed on the property that may adversely impact Bartlett Tree Experts’ ability to perform the Work. 2.32 Cancellation If the Client cancels or reduces the Work after the Work has started, the Client shall pay Bartlett Tree Experts for all the items of the Work that have been completed and all reasonable costs Bartlett Tree Experts has incurred in preparing to perform the remainder of the Work. 2.33 Payment The Client shall pay for the Work when the Client receives Bartlett Tree Experts’ invoice for the Work, unless specific payment terms have been agreed upon by the parties. If any amount remains unpaid 30 days after the date of the invoice or any period stated in the Client Agreement, whichever is longer, as a service charge the unpaid amount will accrue interest at the rate of 1.5% per month (or 18% per year) or the maximum rate permitted by law, whichever is lower. The Client shall reimburse Bartlett Tree Experts for any expenses (including attorneys’ fees and court costs) it incurs in collecting amounts that the Client owes under the Client Agreement . Article 3 TREE CONDITIONS 3.1 Cables, Braces and Tree-Support Systems (a) The Client acknowledges that cables, braces or tree-support systems are intended to reduce the risk associated with tree part breakage by providing supplemental support to certain areas within trees and in some cases by limiting the movement of leaders, limbs, or entire trees, and are intended to mitigate the potential damage associated with tree part breakage; but that such supplemental support systems cannot eliminate the risk of breakage or failure to trees or tree parts entirely, and future breakage and damage is still possible. (b) The Client acknowledges that for cables, braces or tree-support systems to function optimally, the Client must arrange for them to be inspected and maintained by a qualified arborist periodically and after each major weather event. 3.2 Lightning Protection Systems (a) The Client acknowledges that lightning protection systems are intended to direct a portion of the electricity from a lightning strike down through the system into the ground, and mitigate the potential damage to the tree from a lightning strike, but that such systems cannot prevent damage to structures, nor can such systems prevent damage to trees caused by lightning entirely. (b) The Client acknowledges that for lightning protection systems to function optimally, the Client must arrange for them to be inspected and maintained by a qualified arborist periodically and after each major weather event. 3.3 Recreational Features (a) The Client acknowledges that Bartlett Tree Experts recommends stopping the use of, and removing, any tree house, ropes course, swing, or other recreational feature attached to a tree. Regardless of the health or condition of the tree, such features might be unsuited for the intended use or might place unp redictable forces on the feature or the tree, resulting in failure of the feature or the tree and injury to persons or damage to property. Bartlett Tree Experts is not responsible for the consequences of use of any such feature. (b) The Client acknowledges that if a recommendation is made to mitigate an observed and immediate safety issue on a tree with any such device or feature attached, such as the removal of a dead, dying, or broken limb that could fall and injure a person or damage property, the Client should not infer that following the recommendation and mitigating the immediate safety issue makes the tree in question safe for the use of the attached device or feature. 3.4 Root Pruning In the right circumstances, root pruning is a valuable and necessary service, but it might pose a risk to the health and structural integrity of trees. To limit that risk, Bartlett Tree Experts performs root pruning to industry standards, but the Client acknowledges that the health and structural integrity of trees within the Scope of Work might nevertheless be adversely affected by any root pruning performed as part of the Work. Bartlett Tree Experts shall assist the Client in understanding the risks involved before opting for root pruning, but the Client will be responsible for deciding to proceed with root pruning. Terms for Commercial Consulting Services March 2022 ● Page 7 of 8 The F.A. Bartlett Tree Expert Company 1290 East Main Street, Stamford, CT 06902 ● 203.323.1131 ● www.bartlett.com 3.5 Stumps, Stump Grinding, Tree Grates The Client acknowledges that if any recommendations call for the removal of certain trees, that the remaining stumps may present tripping hazards, and that it is the Client’s responsibility to remove any such tripping hazard, whether such hazard is created by the stump, the grindings if the stump is ground down, or any tree grates that exist. 3.6 Client Trees in Hazardous Condition If the Client Agreement specifies that one or more trees within the Scope of Work are in hazardous condition, have an extreme, high or moderate risk rating, or should be removed for safety reasons, the Client acknowledges that removing those trees would prevent future damage from trees or tree limbs falling. If the Client requests that one or more of those trees be pruned instead of removed, the Client acknowledges that although pruning might reduc e the immediate risk of limbs falling, it does not preclude the possibility of future limb, stem, or root failure. Bartlett Tree Experts is not responsible for any such future failure. 3.7 Trees in Poor Health or a Severe State of Decline The Client acknowledges that if a tree is in poor health or in a severe state of decline, Bartlett Tree Experts cannot predict how that tree will respond to any recommended plant health care or soil care and fertilization treatment and might not be able to prevent that tree from getting worse or dying. 3.8 Trees Planted and Maintained by Other Contractors The Client acknowledges that if trees within the Scope of Work were recently planted or are being maintained by one or more other contractors or if one or more other contractors will be watering and providing services with respect to trees within the Scope of Work, how those trees respond to treatment in the course of the Work might be unpredictable, and Bartlett Tree Experts cannot be responsible for the health of such trees or plants. 3.9 Trees with Cones and Large Seed Pods The Client acknowledges that large tree cones or seedpods on some trees can become dislodged and fall without notice, creating a hazard to persons or property. If the Client has the type of tree on their property that produces large, heavy cones or seedpods, and the Client does not wish to remove the tree, Bartlett Tree Experts recommends that the Client marks off and restricts the area under and near the tree from pedestrian and vehicle traffic whenever possible, places a warning sign near the tree, remains aware of the hazardous conditions the falling cones can create, and inspects the tree annually and removes any observable cones if possible in order to mitigate the potential for damage from falling cones. 3.10 Fire Damage (a) Regardless of the species, trees exposed to fire can suffer structural damage that goes beyond whatever external damage might be visible. Fire can cause cracking and brittleness in tree structure and integrity; it can make pre - existing defects worse; it can make roots less stable; and it can weaken the overall health of the tree, making it susceptible to disease and pest infestations. The effects of fire damage are unpredictable and difficult to determine. Bartlett Tree Experts is not responsible for any injury to persons or damage to property resulting from services performed on fire-damaged trees as part of the Work. (b) The Client acknowledges that if trees and shrubs on the Client’s property have been exposed to fire, the Client should have qualified arborist periodically inspect trees and shrubs on the property for fire damage. Article 4 DISPUTE RESOLUTION 4.1 Arbitration (a) As the exclusive means of initiating adversarial proceedings to resolve any dispute arising out of or related to the Client Agreement or Bartlett Tree Experts’ performance of the Work, a party may demand that the dispute be resolved by arbitration administered by the American Arbitration Association in accordance with its commercial arbitration rules, and each party hereby consents to any such dispute being so resolved. Any arbitration commenced in accordance with this section must be conducted by one arbitrator. Judgment on any award rendered in any such arbitration may be entered in any court having jurisdiction. The parties also agree that the issue of whether any such dispute is arbitrable will be decided by an arbitrator, not a court. (b) The arbitrator must not award punitive damages in excess of compensatory damages. Each party hereby waives any right to recover any such damages in any arbitration. 4.2 Third Party Liability The Client acknowledges that the use of any management plans created, reports written, recommendations, maps, sketches, and conclusions made are for the Client’s use and are not intended to benefit or cause damage to any third party. Bartlett Tree Experts accepts no responsibility for any damages or losses suffered by any third party or by the Terms for Commercial Consulting Services March 2022 ● Page 8 of 8 The F.A. Bartlett Tree Expert Company 1290 East Main Street, Stamford, CT 06902 ● 203.323.1131 ● www.bartlett.com Client as a result of decisions made or actions based upon the use of reliance of the management plans created, reports written, recommendations, maps, sketches, and conclusions made by any third party. 4.3 Limitation of Liability The maximum liability of Bartlett Tree Experts for any losses incurred by the Client arising out of the Client Agreement or Bartlett Tree Experts’ performance of the Work will be the amount paid by the Client for the Work, except in the case of negligence or intentional misconduct by Bartlett Tree Experts. Article 5 MISCELLANEOUS 5.1 Client Responsibilities (a) The Client is responsible for the maintenance of the Client’s trees, shrubs, and turf and for all decisions as to whether or not to prune, remove, or conduct other types of tree work on each respective tree , or when to prune, remove, or conduct other tree work on any respective tree, and all decisions related to the safety of each respective tree, shrub, and turf area. (b) Nothing in this Agreement creates an ongoing duty of care for Bartlett Tree Experts to provide safety maintenance or safety inspections in and around the Client’s property. It is the responsibility of the Client to ensure the safety of its trees and landscape, and to take appropriate actions to prevent any future tree or tree part breakage or failures , or otherwise remove any hazardous conditions which may be present or may develop in the future. 5.2 Severability If any portion of this Client Agreement is found to be unenforceable, then only that portion will be stricken from the Client Agreement, and the remainder of the Client Agreement will remain enforceable. 5.3 Unrelated Court Proceedings The Client acknowledges that Bartlett Tree Experts has prepared the Client Agreement solely to help the Client understand the Scope of Work and the related costs. If a court subpoenas Bartlett Tree Experts’ records regarding, or requires that a Bartlett representative testify about, the Client Agreement or the Work in connection with any Proceeding to which Bartlett Tree Experts is not a party or in connection with which Bartlett Tree Experts has not agreed to provide expert testimony, the Client shall pay Bartlett Tree Experts Two Hundred Dollars ($200.00) per hour for time spent by Bartlett representatives in collecting and submitting documents for those Proceedings and attending depositions or testifying as part of those Proceedings. 5.4 Use of Information The Client acknowledges that the information provided within the Client Agreement and any deliverables provided is solely for the use of the Client for the intended purpose of helping the Client understand and manage their tree care needs. All deliverables must be used as a whole, and not separated or used separately for other purposes. 5.5 Notices For a notice or other communication under the Client Agreement to be valid, it must be in writing and delivered (1) by hand, (2) by a national transportation company (with all fees prepaid), or (3) by email. If a notice or other communication addressed to a party is received after 5:00 p.m. on a business day at the location specified for that party, or on a day that is not a business day, then the notice will be deemed received at 9:00 a.m. on the next business day. 5.6 Amendment; Waiver No amendment of the Client Agreement will be effective unless it is in writing and signed by the parties. No waiver under the Client Agreement will be effective unless it is in writing and signed by the party granting the waiver. A waiver granted on one occasion will not operate as a waiver on other occasions. 5.7 Conflicting Terms If these terms conflict with the rest of the Client Agreement, the rest of the Client Agreement will prevail. If these terms conflict with any other Client documentation, terms, or purchase order agreement, then the Client Agreement and these terms will prevail. 5.8 Entire Agreement The Client Agreement with these terms constitutes the entire understanding between the parties regarding Bartlett Tree Experts’ performance of the Work and supersedes all other agreements, whether written or oral, between the parties.