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Home My WebLink AboutEx07_Tree Retention Plan.pdf TREE RETENTION /LAND CLEARING PLAN HAZEN HIGH SCHOOL MODERNIZATION PROJECT PROJECT NO.: 22318.00 Renton, Washington PREPARED FOR: Mike Cato, PE Facilities PM – Capitol Planning & Construction Renton School District No. 403 7812 South 124th Street Seattle, WA 98178 Cell: (206) 643-2887 PREPARED BY: Atlas Technical Consultants LLC 17619 NE 67th Ct #100 Redmond, WA 98052 October 4, 2024 Tree Retention Plan Hazen High School Modernization Project Page | 1 TABLE OF CONTENTS 1. INTRODUCTION ............................................................................................................................................... 2 2. PROJECT LOCATION ......................................................................................................................................... 2 3. GENERAL SITE CONDITIONS ............................................................................................................................. 2 3.1 Environmentally Critical Areas ................................................................................................................ 2 4. METHODS ........................................................................................................................................................ 3 4.1 Tree Inventory Methods......................................................................................................................... 3 4.2 Significant Trees ..................................................................................................................................... 3 4.3 Landmark Trees ..................................................................................................................................... 3 5. TREE INVENTORY RESULTS .............................................................................................................................. 4 6. PROJECT DESCRIPTION .................................................................................................................................... 4 7. IMPACT ASSESSMENT ...................................................................................................................................... 5 8. CODE ANALYSIS ............................................................................................................................................... 6 9. MITIGATION SEQUENCING .............................................................................................................................. 7 9.1 Avoidance .............................................................................................................................................. 7 9.2 Minimization.......................................................................................................................................... 7 9.3 Compensation........................................................................................................................................ 7 10. TREE PROTECTION BMPS ............................................................................................................................... 9 10.1 Construction BMPs............................................................................................................................. 10 10.2 Tree Removal ..................................................................................................................................... 11 10.3 Post Construction BMPs ..................................................................................................................... 11 LIST OF TABLES Table 1 – Summary of Significant Trees within Project Area .................................................................................... 4 Table 2 – Cumulative CRZ impact analysis of significant trees .................................................................................. 5 Table 3 – Total diameter inches of removed significant trees. ................................................................................. 6 LIST OF APPENDICES Appendix A– Tree Inventory Log ............................................................................................................................. A Appendix B – Tree Location Map & Protection PLAN ............................................................................................... B Appendix C – CRZ Impact Analysis ........................................................................................................................... C Tree Retention Plan Hazen High School Modernization Project Page | 2 1. INTRODUCTION Atlas Technical Consultants (Atlas) is pleased to submit this Tree Retention/ Land Clearing Plan for the Hazen High School Modernization Project (Project). The Project will involve modernizing the five connected buildings which comprise the school along with construction of a new entry vestibule and installation of metal façade along the eastern portion of the building along Hoquiam Avenue NE. Additional exterior work includes re-roofing a subset of the existing buildings to meet the current energy code, one rain vault to be installed west of the baseball field and two rain vaults to be installed directly west of the school building within the existing sports field. Utility upgrades and decommissioning will also occur. Campus wide improvements to the building include seismic upgrade improvements, security and access controls, architectural finishes and cabinetry, and fire alarm and electrical system upgrades. The project will be constructed in four phases beginning in the 2025/2026 school year and ending in the fall of 2028. This Tree Retention Plan is divided into three general sections. The first summarizes the basic findings of the tree inventory. The second analyzes the proposal and discusses impacts to the subject trees, and the third contains recommended tree protection Best Management Practices (BMPs) that originate, in part, from City of Renton requirements. This document is intended to meet the requirements of the City of Renton Municipal Code Title 4-4- 130 to be used as a guide during construction to reduce impacts to retain trees within the subject parcels. 2. PROJECT LOCATION The project is located at 1101 Hoquiam Ave NE in the City of Renton. Work will be conducted on the following King County Parcel Numbers: 1023059201, 1023059094, 1023059277, 1023059057, 1023059278, 1023059072, 1023059292, and 1023059084. King County Parcel no. 1023059277 is zoned RMF while the remaining parcels are zoned R8. 3. GENERAL SITE CONDITIONS Residential neighborhoods border the subject parcels on all sides with a small commercial district to the north along Sunset Boulevard. A separate church parcel is located within the school grounds and is owned by another entity. The topography surrounding the school building is generally flat sloping downhill to the track and baseball fields. This transitions to a forested area primarily composed of mature Douglas-fir (Pseudotsuga menziesii) with Himalayan blackberry (Rubus armeniacus) in the understory. The landscape surrounding Hazen High School is well maintained with good specimens of Alaska cedar (Callitropsis nootkatensis) near the front entrance and Common beach (Fagus sylvatica) along Hoquiam Avenue NE. Other tree species include Quaking aspen (Populus tremuloides), Callery pear (Pyrus calleryana), and Austrian pine (Pinus nigra) interspersed with areas of lawn and hardscape. 3.1 Environmentally Critical Areas Regulated slopes are located west of the school between the building and the track and baseball field, to the northwest between the baseball field and Duvall Avenue NE , and a few other small areas. No wetlands or streams are present on the subject parcels. An existing stormwater pond is present southwest of the baseball field but is overgrown with red alder (Alnus rubra). Stormwater ponds are not critical areas but are mentioned in this section as a potential encumbrance. Tree Retention Plan Hazen High School Modernization Project Page | 3 4. METHODS 4.1 Tree Inventory Methods One ISA-Certified Arborist and Staff Arborist conducted a site visit on September 20, 2024, to inventory and assess tree’s rooted in the project area and immediate vicinity. Subject trees were measured for size using guidelines outlined in the Guide for Plant Appraisal, 9th Edition (CLTA, 2000) (Guide). Trunk diameters were measured 4.5 feet above the ground surface (diameter at breast height [DBH]) using a graduated metal logger’s diameter tape. Low branching, leaning, multi-stemmed trees, or trees on a slope were measured using the Modifications to Tree Size Measurements section of the Guide. Multi-stemmed trees were given a one-stem equivalent diameter in the attached inventory log using the total cross-sectional trunk area for all stems contributing to the canopy. Height was visually estimated to the nearest five feet. A condition rating was assigned to each tree using a scale from one to six, one being excellent and six being completely dead. The health factor combines an assessment of tree vigor and the soundness of the above-ground structure. Tree risk was not the primary target of this assessment, but a basic, ISA Level 1 screening of all trees in the inventory was performed. Potentially hazardous trees were noted during the inventory. The total developable area was determined by taking the total site area and subtracting this from the total area of regulated slopes as mapped by the City of Renton (COR) GIS map. These slopes are mapped as greater than 25 percent and less than or equal to 40 percent, in addition to, slopes greater than 15 percent and less than or equal to 25 percent. The sum of regulated slopes was subtracted from the total site area to determine the total developable area for the purpose of calculating minimum tree credits per acre. An impact assessment of the subject trees was performed to determine the effects of construction on adjacent retain trees. This is based on the critical root zone (CRZ) of the subject tree in conflict with the work and is also known as the limit of disturbance. The CRZ is defined as equaling one foot for every one inch of diameter. The total area of overlap between the CRZ of a tree and the clearing and grubbing limits is divided by the total area of the CRZ. The result is expressed as a percentage of cumulative CRZ impact. CRZ impact levels are divided into three tiers: low (less than 25 percent), moderate (25 to 29 percent), and high (30 percent or greater). When a CRZ impact is 25 percent or greater, retention is based on species and current health condition of the subject tree. Industry standards recommend tree removal when 30 percent or more of the CRZ is damaged or removed. 4.2 Significant Trees The regulatory status of trees was determined by reviewing the RMC. Relevant data was used to determine significance for evaluation of the proposal. According to Title 4-11-200 – T Definitions a significant tree is any tree with a caliper of at least six inches, except alder or cottonwood trees, which qualify as a significant tree with a caliper of 8 inches or greater. Trees that are dead, in very poor condition, or were judged to pose a high risk of failure are not considered significant. 4.3 Landmark Trees A landmark tree is defined as tree with a caliper of at least twenty-four inches or greater. This excludes red alder and black cottonwood (Populus balsamifera) which are considered landmark trees with a caliper of thirty inches or greater per RMC 4-11-200(Y)(2.). Tree Retention Plan Hazen High School Modernization Project Page | 4 5. TREE INVENTORY RESULTS A total of 156 trees were identified, tagged, and assessed within and adjacent to the project limits (Appendix A, Appendix B). Of these, 124 trees are large enough to be considered “significant” while 16 trees meet the definition of a “landmark” tree (Table 1). The most common species, at 36 individuals, is Douglas-fir followed closely by Bigleaf maple (Acer macrophyllum). A total of 19 unique tree species are rooted within and adjacent to the project area (Table 1). Table 1 – Summary of Significant Trees within Project Area # WITHIN PROJECT AREA SCIENTIFIC NAME COMMON NAME # SGNFCNT # LNDMRK SUM SIG CMBND DBH (IN) AVERAGE SIG CMBND DBH (IN) 13 Acer circinatum Vine maple - - - - 29 Acer macrophyllum Bigleaf maple 28 2 456.8 16.3 6 Acer rubrum Red maple 6 - 59.7 10.0 7 Alnus rubra Red alder 7 - 75.5 10.8 1 Arbutus menziesii Pacific madrone 1 - 19.3 19.3 6 Callitropsis nootkatensis Alaska cedar 6 - 61.4 12.3 1 Cornus kousa Kousa dogwood 1 - - - 3 Crataegus monogyna Common hawthorne 3 - 20.5 6.8 4 Fagus sylvatica European beech 4 - 44.7 11.2 6 Liquidamber styraciflua Sweetgum 6 56.8 9.5 4 Pinus nigra Austrian pine 4 2 99.9 25.0 2 Populus balsamifera Black cottonwood 1 - 9.3 9.3 17 Populus tremuloides Quaking aspen 7 - 50.1 7.2 1 Prunus emarginata Bitter cherry 1 - 9.1 9.1 33 Pseudotsuga menziesii Douglas-fir 33 12 755.4 22.9 16 Pyrus calleryana Callery pear 9 - 61.9 6.9 3 Salix scouleriana Scouler’s willow 3 - 39.1 13.0 3 Thuja plicata Western red cedar 3 24.4 8.1 2 Tsuga heterophylla Western hemlock 2 19.1 9.6 156 124 16 1863.1 15.1 The average diameter across all assessed trees is 15.1 inches. The largest diameter trees within the project area are Douglas-fir, Bigleaf maple, and Austrian pine. Douglas-fir and Bigleaf maple are more common within the project area however Austrian pine have larger stem diameters on average. The majority of the inventoried trees were judged to be in good condition with the exception of Callery pear which are susceptible to pest and disease but are often found within the urban landscape. 6. PROJECT DESCRIPTION The proposal is to modernize the existing Hazen High School building by performing updates to both the exterior and interior of the building. Exterior work that may impact trees rooted on the parcel include reroofing a subset of the attached buildings, utility installation, pavement removal and replacement, and installation of a rain vault near Tree Retention Plan Hazen High School Modernization Project Page | 5 west of the baseball field on the northwest quadrant of the site. The front entrance facade and eastern wall will also have metal panels attached to the existing walls. 7. IMPACT ASSESSMENT As detailed in Appendix C and Table 2, the Hazen High School Modernization Project will result in tree removal. Of the 124 significant trees inventoried, 15 trees meet the “low” cumulative CRZ impact threshold (between 1 and 25 percent) while two trees meet the “moderate” cumulative CRZ impact threshold (between 25 and 29 percent). In total, five trees meet the “high” CRZ impact category (30 percent or more) and are recommended for removal (Table 2). Tree number 165 was requested to be removed by the school district as a safety issue to increase visibility and signage for the front entrance to the school. Tree numbers 155 and 159 are in direct conflict with the work and will also be removed but do not meet the size criteria for a significant tree and are therefore not represented in the table below and do not count toward tree replacement. Table 2 – Cumulative CRZ impact analysis of significant trees TREE TAG # SCIENTIFIC NAME COMMON NAME DBH (IN) HLTH CONDN CMLTV CRZ IMPCT (%) (DC=DRCT CONFLICT) IMPACT CTGRY (L=low) ACTION (r=REMOVE) 118 Pinus nigra Austrian pine 18.5 Excellent 2 L PROTECT 157 Populus tremuloides Quaking aspen 6.3 Good 40 HIGH r 165 Callitropsis nootkatensis Alaska cedar 14.6 Good DF HIGH r 180 Callitropsis nootkatensis Alaska cedar 14.6 Good 4 L PROTECT 244 Pseudotsuga menziesii Douglas-fir 17.8 Good 4 L PROTECT 245 Pseudotsuga menziesii Douglas-fir 22.3 Good 31 HIGH r 246 Pseudotsuga menziesii Douglas-fir 22.7 Good 15 L PROTECT 247 Pseudotsuga menziesii Douglas-fir 27.2 Good 23 L PROTECT 249 Pseudotsuga menziesii Douglas-fir 37.4 Good 6 L PROTECT 250 Pseudotsuga menziesii Douglas-fir 19.8 Good DC HIGH r 251 Pseudotsuga menziesii Douglas-fir 15.7 Good DC HIGH r 252 Pseudotsuga menziesii Douglas-fir 19.5 Good 2 L PROTECT 253 Pseudotsuga menziesii Douglas-fir 23.4 Good 27 MOD PROTECT 254 Pseudotsuga menziesii Douglas-fir 22.2 Good 27 MOD PROTECT 255 Pseudotsuga menziesii Douglas-fir 25.9 Good 12 L PROTECT 256 Pseudotsuga menziesii Douglas-fir 24.5 Good 17 L PROTECT 257 Pseudotsuga menziesii Douglas-fir 16.9 Fair <1 L PROTECT 259 Pseudotsuga menziesii Douglas-fir 17.3 Good <1 L PROTECT 260 Pseudotsuga menziesii Douglas-fir 20 Good 17 L PROTECT 261 Pseudotsuga menziesii Douglas-fir 24.6 Good 5 L PROTECT 262 Pseudotsuga menziesii Douglas-fir 25.3 Good 15 L PROTECT 263 Pseudotsuga menziesii Douglas-fir 28.9 Good 20 L PROTECT Of the 15 trees in the low CRZ impact category, 11 trees will receive minimal root disturbance (i.e., 15 percent CRZ impact or less). The remaining four trees in the low impact category are estimated to receive a CRZ impact between Tree Retention Plan Hazen High School Modernization Project Page | 6 17 and 23 percent. Two trees are within the moderate category and are recommended to be retained. Overall, five trees will receive consequential root impacts, with three trees directly in conflict with the work. The remaining two trees will receive cumulative root impacts of 30 percent or greater. This level of impact is not within the threshold of what trees in reasonably good condition can withstand and are recommended to be removed. The total diameter inches of the removed trees is: 78.7 diameter inches (Table 3). Table 3 – Total diameter inches of removed significant trees. TREE TAG # SCIENTIFIC NAME COMMON NAME DBH (IN) 157 Populus tremuloides Quaking aspen 6.3 165 Callitropsis nootkatensis Alaska cedar 14.6 245 Pseudotsuga menziesii Douglas-fir 22.3 250 Pseudotsuga menziesii Douglas-fir 19.8 251 Pseudotsuga menziesii Douglas-fir 15.7 Total: 78.7 Removed trees are not expected to adversely impact adjacent retain trees. Tree number 165 is not rooted adjacent to other trees therefore no adverse impacts to adjacent retain trees exist. Tree number 157 is rooted within a grouping of eight additional Quaking aspen trees. The grove has wind protection to the south, a clear path for removal is present, and the canopies are not interlocking. Therefore, no adverse impacts from tree removal are anticipated to the grove. Tree number 245 is rooted west of the baseball field and is set forward from the rest of the grove which will facilitate ease of removal to minimize impacts to adjacent retained trees. The stand will also retain wind protection from the south. Removal of tree number 245 is not expected to adversely affect adjacent retain trees. Tree numbers 250 and 251 are set back from other trees rooted on the parcel. Therefore, their removal will not impact adjacent retain trees. 8. CODE ANALYSIS This project is subject to the provisions of RMC 4-4-130 – Tree retention and land clearing regulations. This project falls under section 4-4-130(H). According to the RMC, the applicant is required to develop a tree retention plan to preserve and enhance the City’s physical and aesthetic character by minimizing indiscriminate removal or destruction of trees, shrubs, and ground cover; 2) Implement and further the goals and policies of the City’s Comprehensive Plan for the environment, open space, wildlife habitat, vegetation, resources, surface drainage, watersheds, and economics; 3) Promote land development practices that result in minimal adverse disturbance to existing vegetation and soils within the City while also recognizing that certain factors may require the removal of certain trees and ground cover; 4) Minimize surface water and groundwater runoff and diversion, and aid in the stabilization of soil while minimizing erosion and sedimentation, and the need for additional storm drainage facilities caused by the destabilization of soils; 5) Retain clusters of trees for the abatement of noise and for wind protection, and reduce air pollution by producing pure oxygen from carbon dioxide; 6) Protect trees during construction activities from damage to tree roots, trunks, and branches; and 7) Recognize that trees increase real estate values. The applicant is required to retain and protect trees based on priority level. Per RMC 4-4-130.(H.)(c.)., landmark trees are the first priority for retention followed by significant trees that form a continuous canopy. Priority one retention value trees in the project area near the school building include the landmark Austrian pine and one Douglas-fir. Trees that form an interlocking canopy are the grouping of Alaska cedar along the eastern edge of the school building and Tree Retention Plan Hazen High School Modernization Project Page | 7 a mixed stand composed of western red cedar (Thuja plicata), red maple (Acer rubrum), and Austrian pine on the western side of the parcel. Trees that meet the Priority One retention value criteria are also found in the forested area west of the baseball field. There are multiple landmark trees in this area as well as trees that form an interlocking canopy. Tree retention standards are determined by developable area. The developable area as defined by RMC 4-11- 040(D.)(T.) includes all areas not encumbered by critical areas, critical area and shoreline buffers, and public rights- of-way that are otherwise developable. Retained trees within the developable area apply towards required landscaping requirements. The total site area is: 1,435,329 SF. The total estimated area of regulated slopes is: 113,605 SF. Therefore, the total developable area is: 1,321,724 SF. For development projects such as this, replacement trees are necessary if a certain number of tree credits cannot be achieved during the initial retention process. See the “compensation” section below for an analysis of replacement trees per the code section cited here. 9. MITIGATION SEQUENCING Mitigation sequencing is a guidance concept typically required for projects near protected critical areas such as wetlands, streams, and associated buffers. An applicant is compelled, through an iterative design process, to first avoid impacts where possible, then reduce the magnitude of proposed damage, and finally to compensate for any unavoidable permanent or temporary loss of the natural resource. This principal can also be applied to protect and preserve tree canopy. The following section discusses how the applicant and design team followed principles of mitigation sequencing. 9.1 Avoidance The Project will predominately impact the interior of the existing school and select areas on the school grounds for improvements such as stormwater vaults, utility upgrades, and resurfacing from these activities. Therefore, major site clearing is not needed for this project which largely avoids impacts to adjacent trees and vegetation. 9.2 Minimization The Project will occur in both paved and unpaved areas. Equipment will be staged on pavement during excavation, when possible, to avoid impacting adjacent significant trees. In accordance with RMC 4-4-130(H).10., tree protection fencing, root discovery and pruning methods will be employed during construction and any pruning needed for clearance will follow industry standard practices. Only five trees will have substantial CRZ impacts, that necessitate removal, while 15 trees will have a “low” CRZ impact, and two trees will have a “moderate” CRZ impact. Proper BMP installation, as discussed below, will help to ensure the 17 trees adjacent to the work have limited health effects over the course of construction. 9.3 Compensation The Project will require the removal of five significant trees. RMC 4-4-130(H.)(1.)a., requires at least 30 percent of all significant trees be retained on site. The total diameter inches of significant trees within the site developable area to be retained are also included as a reference. The following information shows the calculations to determine these thresholds. Tree Retention Plan Hazen High School Modernization Project Page | 8 Minimum Tree Retention Requirements by Diameter Total diameter inches of significant trees inventoried: 1863.1 (Table 1). Rounded to1863 total diameter inches. Sum of removed tree DBH recommended for removal: 78.7 (Table 2). Rounded up to 79 diameter inches removed. 1863 x (0.30) = 558.9 Rounded to 559 diameter inches. A minimum of 559 diameter inches of significant trees must be retained. 1863 – 79 = 1784. 1784 inches of significant trees will be retained. (79 / 1863) * 100 = 4.2% of total inventoried tree diameter inches will be removed. 95.8% of inventoried tree diameter inches will be retained. Minimum Tree Retention Requirements by Sum of Significant Total number of significant trees on site: 124 Total significant trees to be removed: 5 124*.30=37.2 trees to be retained (at a minimum) The project is retaining 119 trees and meets the minimum tree retention requirement. Tree Credit Requirements Total site developable area: 1,321,724 SF (30.3 acres) 30 * 30 = 900 tree credits required Total tree credits for retained trees: 749 There is a delta of 151 tree credits. The project does not meet the tree credits requirements. The above information indicates that the tree removal action for the Hazen high School Modernization Project meets the minimum tree retention requirements. The tree credit requirements were not met. However, the tree inventory only sought to collect data on trees within the mapped project area and did not include every tree rooted on the entire campus. Since only 4.2 percent of the total diameter inches surveyed, will be removed, the applicant wishes Tree Retention Plan Hazen High School Modernization Project Page | 9 to waive the 151 tree credits required, since minimal tree removal will be occurring on site as part of this modernization project. 10. TREE PROTECTION BMPS This section outlines a list of best management practices and procedures that should be set up and followed ahead of and during construction. These include physical items mentioned in RMC 4-4-130(2.) such as fencing and signage, but also includes preconstruction meetings with the contractor to ensure the intent of this plan is met, that impacted roots and branches are treated according to industry standards, and that procedures are in place for unanticipated changes. A. Pre-Construction Meeting a. Schedule and conduct a pre-construction meeting with the owner and the contractor prior to beginning work to review any questions the contractor may have regarding trees and vegetation requiring protection. Following the meeting, a walkthrough with the contractor to discuss the contractor’s plan for setting up and maintaining tree protection BMPs prior to work should be completed. b. Prior to this meeting, mark all trees to remain and or to be removed as described in this specification for review and approval by the applicant. B. Establish Tree Protection Zone (TPZ) a. Establish high-visibility construction fencing (HVCF) or chain link fencing if appropriate prior to land disturbing activity along the clearing limits and/or tree protection zone as detailed in Appendix B or as determined by the arborist. Fencing must be a minimum of four feet tall per RMC 4-4- 130(2.)(e.). b. Fencing shall be established at the edge of the critical root zone of protected and retained trees, or at the location indicated on the construction drawings if work is within the CRZ. The zone to be protected is called the TPZ. c. Install highly visible signs on the fence of each discrete TPZ. Signs will state, “Protection of these Trees is in your care. Alteration or disturbance is prohibited by law” and provide the City phone number for code enforcement to report violations. d. No construction access or equipment storage shall be allowed in the tree protection area or placed near trees. e. No excavation or compaction of soil will be allowed within the TPZ once established. Any proposed change or temporary relocation to perform the work must be approved and supervised by the Arborist. f. The tree protection fencing shall stay in place for the duration of the project. C. Identify Roots of Protected Trees that may be impacted: Tree Retention Plan Hazen High School Modernization Project Page | 10 a. Prior to construction, identify and mark with spray paint all visible, large roots from trees to be protected in the construction area (roots from trees to be removed are excluded and may be destroyed). b. Large diameter roots (roots larger than 2 inches in diameter) from retain trees should be cut by hand at the furthest point from the tree as possible while still allowing for excavation to occur for the project element. c. Air spading may be used for root discovery and may be employed under the supervision of the arborist to understand root architecture when installing utilities or other activities that may require root pruning. This allows for clean root pruning adjacent to, for example underground structure installation, or may allow utilities to be installed underneath the root structure, limiting impact to the subject tree. d. Do not cut large tree roots with hydraulic equipment such as an excavator bucket as this may damage roots inside of the TPZ. 10.1 Construction BMPs A. Order of Operations for Construction 1. Install tree protection fencing. 2. Remove trees per the Tree protection Plan sheet in Appendix C. Do not grub. Stumps will be ground unless flagged to be removed by the arborist by an excavator due to the subject tree being rooted away from other trees. 3. Prune retain trees for construction access if needed using industry standard practices. 4. Tie back flexible branches prior to work if needed or as shown in Appendix B. 5. Install trunk protection BMPs for retained trees if work will be very close to any trunks, as needed. 6. Perform the work. 7. Install mitigation plantings, if required. B. Root Pruning for Retained Trees Adjacent to Work (does not apply to the removed trees) 8. Roots 2 inch and larger in diameter (from retained trees) and that conflict with the project shall only be cut back to the minimum necessary. Work shall be performed and scheduled to close excavations as quickly as possible over exposed roots. 9. Roots (from retained trees) larger than 2 inches in diameter shall be hand cut using a sharp saw. Large roots shall not be cut with hydraulically driven equipment (excavator buckets, etc.) as they typically “rip” or “tear” roots beyond protection limits and damage the root zone beyond the necessary amount. Tree Retention Plan Hazen High School Modernization Project Page | 11 10. Retained trees that receive excessive root impacts from excavation shall be evaluated by a Certified Arborist. 10.2 Tree Removal A. Remove all trees indicated by the project plans and specifications, as requiring removal, in a manner that will not damage adjacent trees, structures, or compact the soil in protection zones. This includes grinding stumps unless removal by equipment is approved by the Arborist. B. Remove trees that are adjacent to protected trees and structures, in sections, to limit the opportunity of damage to adjacent crowns, trunks, ground plane elements or structures. C. Protect adjacent paving, soil, trees, ground cover plantings and understory plants to remain from damage during all tree removal operations. Protection includes the root system, trunk, limbs, and crown from breaking or scarring, and the soil from compaction. 10.3 Post Construction BMPs A. Removal of Fencing and other Plant Protection 1. At the end of the construction period and when consistent with the requirement of other permits (e.g., site stability is achieved per the requirements of the NPDES permits for construction stormwater), remove all construction fencing, temporary wood chips, temporary mulch, geotextile, trunk protection or any other tree and plant protection material. A APPENDIX A– TREE INVENTORY LOG Hazen High School Modernization Project Tree Inventory Attribute Data Inventory issued: 09/30/2024 Field Investigation: 09/20/2024 TAG NO. SPECIES NAME # STEMS DBH 1 (IN) DBH 2 (IN) DBH 3 (IN) DBH 4 (IN) DBH 5 (IN) DBH 6 (IN)HEIGHT (FEET)CANOPY RADIUS (FEET)CNDTN CMBND DBH* (IN) CRITICAL ROOT ZONE RADIUS (FEET) SIG PER RMC LANDMARK PER RMC PROPOSED ACTION r=REMOVE TREE CREDITS PER RMC NOTES 1 117 Pyrus calleryana, (Callery Pear) 1 5.0 20 4 POOR 5.0 PROTECT Upper canopy predominatly dead, moss present 2 118 Pinus nigra, (Austrian Pine) 1 18.5 55 15 EXCELLENT 18.5 18.0 X PROTECT 7 Good form and structure 3 119 Pyrus calleryana, (Callery Pear) 1 6.0 25 5 FAIR 6.0 6.0 X PROTECT 4 Some branch dieback 4 120 Pinus nigra, (Austrian Pine) 1 22.5 60 20 GOOD 22.5 22.0 X PROTECT 9 Some thinning foliage 5 121 Pinus nigra, (Austrian Pine) 1 26.7 65 20 GOOD 26.7 26.0 X X PROTECT 10 Tridominant at five foot above ground surface 6 122 Pyrus calleryana, (Callery Pear) 1 5.3 18 5 GOOD 5.3 PROTECT Suckering 7 123 Pyrus calleryana, (Callery Pear) 1 5.5 20 5 GOOD 5.5 PROTECT Suckering 8 124 Pyrus calleryana, (Callery Pear) 1 5.0 20 5 FAIR 5.0 PROTECT Some branch dieback 9 125 Acer rubrum, (Red Maple) 1 20.0 75 10 GOOD 20.0 20.0 X PROTECT 8 Codominant branching 10 126 Thuja plicata, (Western Red Cedar) 1 7.5 25 10 GOOD 7.5 7.0 X PROTECT 4 Good form and structure 11 127 Pinus nigra, (Austrian Pine) 1 32.2 70 30 GOOD 32.2 32.0 X X PROTECT 11 Some thining foliage 12 128 Thuja plicata, (Western Red Cedar) 1 7.7 40 8 GOOD 7.7 7.0 X PROTECT 4 Good form and structure 13 129 Thuja plicata, (Western Red Cedar) 1 9.2 45 7 GOOD 9.2 9.0 X PROTECT 4 Some dead foliage, heat stress 14 130 Pseudotsuga menziesii, (Douglas-fir) 1 25.2 80 20 GOOD 25.2 25.0 X X PROTECT 10 15 131 Pyrus calleryana, (Callery Pear) 1 4.2 20 3 GOOD 4.2 PROTECT 16 132 Populus tremuloides, (Aspen) 1 7.4 60 4 GOOD 7.4 7.0 X PROTECT 4 17 133 Populus tremuloides, (Aspen) 1 5.9 60 4 GOOD 5.9 PROTECT 18 134 Pseudotsuga menziesii, (Douglas-fir) 1 16.3 60 20 GOOD 16.3 16.0 X PROTECT 7 19 135 Pseudotsuga menziesii, (Douglas-fir) 1 19.1 65 20 GOOD 19.1 19.0 X PROTECT 8 20 136 Populus tremuloides, (Aspen) 1 8.0 60 3 GOOD 8.0 8.0 X PROTECT 4 21 137 Acer circinatum, (Vine Maple) 3 4.0 2.0 3.5 15 4 FAIR 5.7 PROTECT Suckering, stressed, pruned 22 138 Acer circinatum, (Vine Maple) 2 4.0 3.5 15 4 FAIR 5.3 PROTECT Suckering, stressed, pruned 23 139 Acer circinatum, (Vine Maple) 3 2.5 1.3 2.2 20 5 POOR 3.6 PROTECT Suckering, drought stressed, pruned 24 140 Acer circinatum, (Vine Maple) 2 2.5 3.0 20 4 FAIR 3.9 PROTECT Suckering, drought stressed, lean to south 25 141 Acer circinatum, (Vine Maple) 2 2.0 3.5 20 3 POOR 4.0 PROTECT Slight lean to south, suckering, improperly pruned 26 142 Acer circinatum, (Vine Maple) 2 1.8 2.2 8 2 FAIR 2.8 PROTECT 27 143 Acer circinatum, (Vine Maple) 2 2.9 1.7 8 2 FAIR 3.4 PROTECT 28 144 Acer circinatum, (Vine Maple) 2 3.0 2.5 8 2 POOR 3.9 PROTECT One stem pruned, one stem dead and suckering 29 145 Acer circinatum, (Vine Maple) 2 1.5 2.0 7 2 POOR 2.5 PROTECT Improperly pruned stems 30 146 Acer circinatum, (Vine Maple) 3 2.5 1.4 3.2 10 2 POOR 4.3 PROTECT 31 147 Acer circinatum, (Vine Maple) 2 2.0 2.5 10 3 POOR 3.2 PROTECT 32 148 Populus tremuloides, (Aspen) 1 4.0 45 2 FAIR 4.0 PROTECT 45 degree lean, exposed roots 33 149 Populus tremuloides, (Aspen) 1 5.5 45 3 GOOD 5.5 PROTECT Exposed roots 34 150 Acer circinatum, (Vine Maple) 2 2.0 1.5 8 3 FAIR 2.5 PROTECT Suckering 35 151 Acer circinatum, (Vine Maple) 2 2.5 3.0 8 3 FAIR 3.9 PROTECT Suckering, exposed roots 36 152 Populus tremuloides, (Aspen) 1 7.4 60 4 GOOD 7.4 7.0 X PROTECT 4 37 153 Populus tremuloides, (Aspen) 1 5.9 55 4 GOOD 5.9 PROTECT 38 154 Populus tremuloides, (Aspen) 1 6.7 60 4 GOOD 6.7 6.0 X PROTECT 4 39 155 Populus tremuloides, (Aspen) 1 5.1 60 4 GOOD 5.1 r 40 156 Populus tremuloides, (Aspen) 1 5.2 50 4 GOOD 5.2 r DBH=Trunk diameter at 4.5 feet above grade CRZ=Critical Root Zone 17619 NE 67th Ct. Suite 100 Redmond, WA 98052 | Phone: 425.429.7800 | Fax: 425.633.2284 | www.oneatlas.com Page 1 OF 4 Hazen High School Modernization Project Tree Inventory Attribute Data Inventory issued: 09/30/2024 Field Investigation: 09/20/2024 TAG NO. SPECIES NAME # STEMS DBH 1 (IN) DBH 2 (IN) DBH 3 (IN) DBH 4 (IN) DBH 5 (IN) DBH 6 (IN)HEIGHT (FEET)CANOPY RADIUS (FEET)CNDTN CMBND DBH* (IN) CRITICAL ROOT ZONE RADIUS (FEET) SIG PER RMC LANDMARK PER RMC PROPOSED ACTION r=REMOVE TREE CREDITS PER RMC NOTES 41 157 Populus tremuloides, (Aspen) 1 6.3 60 4 GOOD 6.3 X r 42 158 Populus tremuloides, (Aspen) 1 5.0 60 4 GOOD 5.0 PROTECT 43 159 Populus tremuloides, (Aspen) 1 4.5 50 4 GOOD 4.5 PROTECT 44 160 Populus tremuloides, (Aspen) 1 5.1 60 4 GOOD 5.1 PROTECT 45 161 Populus tremuloides, (Aspen) 1 5.6 60 3 GOOD 5.6 PROTECT 46 162 Populus tremuloides, (Aspen) 1 7.0 60 4 GOOD 7.0 7.0 X PROTECT 4 47 163 Populus tremuloides, (Aspen) 1 7.3 55 4 GOOD 7.3 7.0 X PROTECT 4 48 164 Cornus kousa, (Kousa dogwood) 1 2.0 6 2 GOOD 2.0 PROTECT 49 165 Callitropsis nootkatensis, (Alaska Yellow Cedar) 1 9.7 60 10 GOOD 9.7 X r Some dead foliage, drought stress 50 166 Pyrus calleryana, (Callery Pear) 1 6.8 45 5 FAIR 6.8 6.0 X PROTECT 4 Some dead branches 51 167 Pyrus calleryana, (Callery Pear) 1 8.2 55 8 GOOD 8.2 8.0 X PROTECT 4 Slight lean to east 52 168 Pyrus calleryana, (Callery Pear) 1 6.7 45 5 GOOD 6.7 6.0 X PROTECT 4 53 169 Pyrus calleryana, (Callery Pear) 1 7.5 45 5 GOOD 7.5 7.0 X PROTECT 4 54 170 Tsuga heterophylla, (Western Hemlock) 1 10.1 55 10 GOOD 10.1 10.0 X PROTECT 5 Good form and structure 55 171 Callitropsis nootkatensis, (Alaska Yellow Cedar) 1 8.4 60 8 GOOD 8.4 8.0 X PROTECT 4 56 172 Tsuga heterophylla, (Western Hemlock) 1 9.0 50 6 FAIR 9.0 9.0 X PROTECT 4 Dead foliage on branch tips, drought stressed 57 173 Fagus sylvatica, (European Beech) 4 6.6 4.5 4.2 6.2 60 8 GOOD 10.9 10.0 X PROTECT 5 58 174 Fagus sylvatica, (European Beech) 5 5.9 6.0 8.4 4.2 3.8 60 8 GOOD 13.2 13.0 X PROTECT 6 59 175 Fagus sylvatica, (European Beech) 4 6.0 5.2 4.5 2.5 50 8 GOOD 9.5 9.0 X PROTECT 4 60 176 Fagus sylvatica, (European Beech) 4 7.5 5.0 5.8 3.0 50 8 GOOD 11.1 11.0 X PROTECT 5 61 177 Callitropsis nootkatensis, (Alaska Yellow Cedar) 4 11.5 7.6 7.0 5.0 70 10 EXCELLENT 16.2 16.0 X PROTECT 7 Good form and structure 62 178 Pyrus calleryana, (Callery Pear) 1 7.5 45 6 FAIR 7.5 7.0 X PROTECT 4 Branch dieback, suckering 63 179 Pyrus calleryana, (Callery Pear) 1 5.8 45 6 FAIR 5.8 0.0 PROTECT Branch dieback, suckering 64 180 Callitropsis nootkatensis, (Alaska Yellow Cedar) 1 14.6 75 18 GOOD 14.6 14.0 X PROTECT 6 One stem pruned, codominant at 40 feet 65 181 Callitropsis nootkatensis, (Alaska Yellow Cedar) 1 11.2 70 15 GOOD 11.2 11.0 X PROTECT 5 Slight lean to east 66 182 Callitropsis nootkatensis, (Alaska Yellow Cedar) 1 11.0 70 15 GOOD 11.0 11.0 X PROTECT 5 Som twig dieback; one stem pruned 67 183 Pyrus calleryana, (Callery Pear) 1 6.0 20 6 FAIR 6.0 6.0 X PROTECT 4 Minor branch dieback 68 184 Pyrus calleryana, (Callery Pear) 1 6.2 20 5 GOOD 6.2 6.0 X PROTECT 4 69 185 Pyrus calleryana, (Callery Pear) 1 5.0 13 3 GOOD 5.0 0.0 PROTECT 70 186 Pyrus calleryana, (Callery Pear) 1 7.0 25 5 GOOD 7.0 7.0 X PROTECT 4 Some branch dieback 71 191 Pseudotsuga menziesii, (Douglas-fir) 1 35.8 100 30 GOOD 35.8 35.0 X X PROTECT 12 72 192 Pseudotsuga menziesii, (Douglas-fir) 1 21.3 75 20 GOOD 21.3 21.0 X PROTECT 8 73 194 Pseudotsuga menziesii, (Douglas-fir) 1 23.4 85 25 GOOD 23.4 23.0 X PROTECT 9 74 195 Prunus emarginata, (Bitter Cherry) 3 6.0 4.5 5.2 45 7 FAIR 9.1 9.0 X PROTECT 4 Lean to street, 45 degree angle 75 196 Acer macrophyllum, (Bigleaf Maple) 1 16.8 75 20 GOOD 16.8 16.0 X PROTECT 7 76 197 Acer macrophyllum, (Bigleaf Maple) 1 18.0 70 25 V. POOR 18.0 18.0 X PROTECT 7 Severe branch dieback 77 198 Acer macrophyllum, (Bigleaf Maple) 1 7.1 55 15 GOOD 7.1 7.0 X PROTECT 4 78 193 Pseudotsuga menziesii, (Douglas-fir) 1 9.3 55 12 GOOD 9.3 9.0 X PROTECT 4 79 199 Acer macrophyllum, (Bigleaf Maple) 1 17.9 85 25 GOOD 17.9 17.0 X PROTECT 7 80 200 Crataegus monogyna, (Common Hawthorn) 3 4.6 4.5 3.0 20 8 GOOD 7.1 7.0 X PROTECT 4 Leaning to street DBH=Trunk diameter at 4.5 feet above grade CRZ=Critical Root Zone 17619 NE 67th Ct. Suite 100 Redmond, WA 98052 | Phone: 425.429.7800 | Fax: 425.633.2284 | www.oneatlas.com Page 2 OF 4 Hazen High School Modernization Project Tree Inventory Attribute Data Inventory issued: 09/30/2024 Field Investigation: 09/20/2024 TAG NO. SPECIES NAME # STEMS DBH 1 (IN) DBH 2 (IN) DBH 3 (IN) DBH 4 (IN) DBH 5 (IN) DBH 6 (IN)HEIGHT (FEET)CANOPY RADIUS (FEET)CNDTN CMBND DBH* (IN) CRITICAL ROOT ZONE RADIUS (FEET) SIG PER RMC LANDMARK PER RMC PROPOSED ACTION r=REMOVE TREE CREDITS PER RMC NOTES 81 201 Acer macrophyllum, (Bigleaf Maple) 1 22.1 80 25 GOOD 22.1 22.0 X PROTECT 9 82 202 Alnus rubra, (Red Alder) 1 12.2 50 15 V. POOR 12.2 12.0 X PROTECT 6 83 203 Acer macrophyllum, (Bigleaf Maple) 1 23.4 85 30 GOOD 23.4 23.0 X PROTECT 9 Codominant 84 204 Acer macrophyllum, (Bigleaf Maple) 1 15.0 65 25 GOOD 15.0 15.0 X PROTECT 6 85 205 Acer macrophyllum, (Bigleaf Maple) 1 15.8 90 25 GOOD 15.8 15.0 X PROTECT 6 86 206 Acer macrophyllum, (Bigleaf Maple) 1 14.6 75 20 GOOD 14.6 14.0 X PROTECT 6 87 207 Acer macrophyllum, (Bigleaf Maple) 1 6.9 55 12 FAIR 6.9 6.0 X PROTECT 4 88 208 Acer macrophyllum, (Bigleaf Maple) 1 6.8 65 10 V. POOR 6.8 6.0 X PROTECT 4 89 209 Acer macrophyllum, (Bigleaf Maple) 4 13.0 90 30 GOOD 28.2 28.0 X PROTECT 10 Codominant 90 210 Acer macrophyllum, (Bigleaf Maple) 1 6.9 45 7 GOOD 6.9 6.0 X PROTECT 4 91 211 Acer macrophyllum, (Bigleaf Maple) 2 12.8 25.0 70 15 GOOD 28.1 28.0 X PROTECT 10 92 212 Acer macrophyllum, (Bigleaf Maple) 1 9.2 60 12 V. POOR 9.2 9.0 X PROTECT 4 93 213 Salix scouleriana, (Scouler's Willow) 1 13.0 45 6 POOR 13.0 13.0 X PROTECT 6 94 214 Acer macrophyllum, (Bigleaf Maple) 1 15.8 85 25 GOOD 15.8 15.0 X PROTECT 7 95 30 Acer macrophyllum, (Bigleaf Maple) 2 24.2 18.5 95 25 GOOD 30.5 30.0 X X PROTECT 11 Codominant 96 216 Acer macrophyllum, (Bigleaf Maple) 1 15.4 85 25 GOOD 15.4 15.0 X PROTECT 6 97 217 Acer macrophyllum, (Bigleaf Maple) 2 19.7 1.0 90 18 GOOD 19.7 19.0 X PROTECT 8 98 218 Salix scouleriana, (Scouler's Willow) 1 18.1 55 15 V. POOR 18.1 18.0 X PROTECT 7 Sig. Decay in Trunk 99 219 Acer macrophyllum, (Bigleaf Maple) 1 8.7 45 10 GOOD 8.7 8.0 X PROTECT 4 100 220 Acer macrophyllum, (Bigleaf Maple) 1 16.4 80 25 GOOD 16.4 16.0 X PROTECT 7 101 221 Crataegus monogyna, (Common Hawthorn) 1 6.1 45 10 GOOD 6.1 6.0 X PROTECT 4 102 222 Crataegus monogyna, (Common Hawthorn) 2 6.7 2.9 25 8 GOOD 7.3 7.0 X PROTECT 4 103 223 Acer macrophyllum, (Bigleaf Maple) 1 14.8 80 20 GOOD 14.8 14.0 X PROTECT 6 104 224 Acer macrophyllum, (Bigleaf Maple) 2 19.2 13.2 95 30 GOOD 23.3 23.0 X PROTECT 9 105 225 Pseudotsuga menziesii, (Douglas-fir) 1 18.0 95 25 GOOD 18.0 18.0 X PROTECT 7 106 226 Alnus rubra, (Red Alder) 1 13.0 70 15 FAIR 13.0 13.0 X PROTECT 6 107 227 Pseudotsuga menziesii, (Douglas-fir) 1 33.4 100 25 GOOD 33.4 33.0 X X PROTECT 12 108 228 Alnus rubra, (Red Alder) 1 8.8 55 15 FAIR 8.8 8.0 X PROTECT 4 109 229 Acer macrophyllum, (Bigleaf Maple) 1 15.2 60 15 V. POOR 15.2 15.0 X PROTECT 6 45 degree lean 110 230 Salix scouleriana, (Scouler's Willow) 2 6.8 4.2 35 8 POOR 8.0 7.0 X PROTECT 4 111 231 Acer macrophyllum, (Bigleaf Maple) 1 6.5 55 12 FAIR 6.5 6.0 X PROTECT 4 112 232 Alnus rubra, (Red Alder) 1 13.7 75 20 FAIR 13.7 13.0 X PROTECT 6 113 233 Alnus rubra, (Red Alder) 1 8.2 15 3 V. POOR 8.2 8.0 X PROTECT 4 114 234 Pseudotsuga menziesii, (Douglas-fir) 1 26.7 90 30 GOOD 26.7 26.0 X X PROTECT 10 115 235 Populus balsamifera, (Black Cottonwood) 1 9.3 75 7 FAIR 9.3 9.0 X PROTECT 4 116 236 Alnus rubra, (Red Alder) 1 10.8 60 8 FAIR 10.8 10.0 X PROTECT 5 117 237 Alnus rubra, (Red Alder) 1 8.8 50 8 FAIR 8.8 8.0 X PROTECT 4 118 238 Pseudotsuga menziesii, (Douglas-fir) 2 25.2 30.0 95 30 GOOD 39.2 39.0 X X PROTECT 13 119 239 Acer macrophyllum, (Bigleaf Maple) 1 14.1 70 25 GOOD 14.1 14.0 X PROTECT 6 120 240 Acer macrophyllum, (Bigleaf Maple) 1 11.9 75 20 GOOD 11.9 11.0 X PROTECT 5 DBH=Trunk diameter at 4.5 feet above grade CRZ=Critical Root Zone 17619 NE 67th Ct. Suite 100 Redmond, WA 98052 | Phone: 425.429.7800 | Fax: 425.633.2284 | www.oneatlas.com Page 3 OF 4 Hazen High School Modernization Project Tree Inventory Attribute Data Inventory issued: 09/30/2024 Field Investigation: 09/20/2024 TAG NO. SPECIES NAME # STEMS DBH 1 (IN) DBH 2 (IN) DBH 3 (IN) DBH 4 (IN) DBH 5 (IN) DBH 6 (IN)HEIGHT (FEET)CANOPY RADIUS (FEET)CNDTN CMBND DBH* (IN) CRITICAL ROOT ZONE RADIUS (FEET) SIG PER RMC LANDMARK PER RMC PROPOSED ACTION r=REMOVE TREE CREDITS PER RMC NOTES 121 241 Pseudotsuga menziesii, (Douglas-fir) 1 21.2 65 12 POOR 21.2 21.0 X PROTECT 8 Broke top and sprouting 122 242 Pseudotsuga menziesii, (Douglas-fir) 1 18.1 95 25 FAIR 18.1 18.0 X PROTECT 7 Lost top and sprouted 123 243 Pseudotsuga menziesii, (Douglas-fir) 1 21.2 95 25 GOOD 21.2 21.0 X PROTECT 8 124 244 Pseudotsuga menziesii, (Douglas-fir) 1 17.8 95 30 GOOD 17.8 17.0 X PROTECT 7 125 245 Pseudotsuga menziesii, (Douglas-fir) 1 22.3 90 25 GOOD 22.3 X r 126 246 Pseudotsuga menziesii, (Douglas-fir) 1 22.7 90 30 GOOD 22.7 22.0 X PROTECT 9 127 247 Pseudotsuga menziesii, (Douglas-fir) 1 27.2 95 35 GOOD 27.2 27.0 X X PROTECT 10 128 248 Acer macrophyllum, (Bigleaf Maple) 1 27.8 80 30 GOOD 27.8 27.0 X X PROTECT 10 129 249 Pseudotsuga menziesii, (Douglas-fir) 2 22.3 95 3 GOOD 37.4 37.0 X X PROTECT 13 130 250 Pseudotsuga menziesii, (Douglas-fir) 1 19.8 90 30 GOOD 19.8 X r 131 251 Pseudotsuga menziesii, (Douglas-fir) 1 15.7 75 25 GOOD 15.7 X r 132 252 Pseudotsuga menziesii, (Douglas-fir) 1 19.5 85 20 GOOD 19.5 19.0 X PROTECT 8 133 253 Pseudotsuga menziesii, (Douglas-fir) 1 23.4 90 20 GOOD 23.4 23.0 X PROTECT 9 134 254 Pseudotsuga menziesii, (Douglas-fir) 1 22.2 90 20 GOOD 22.2 22.0 X PROTECT 9 135 255 Pseudotsuga menziesii, (Douglas-fir) 2 16.6 80 20 GOOD 26.0 25.0 X X PROTECT 10 136 256 Pseudotsuga menziesii, (Douglas-fir) 1 24.5 95 30 GOOD 24.5 24.0 X X PROTECT 9 137 257 Pseudotsuga menziesii, (Douglas-fir) 1 16.9 50 15 FAIR 16.9 16.0 X PROTECT 7 138 258 Arbutus menziesii, (Pacific Madrone) 2 15.2 55 10 GOOD 19.3 19.0 X PROTECT 8 139 259 Pseudotsuga menziesii, (Douglas-fir) 1 17.3 90 25 GOOD 17.3 17.0 X PROTECT 7 140 260 Pseudotsuga menziesii, (Douglas-fir) 1 20.0 80 25 GOOD 20.0 20.0 X PROTECT 8 141 261 Pseudotsuga menziesii, (Douglas-fir) 1 24.6 80 15 GOOD 24.6 24.0 X X PROTECT 9 142 262 Pseudotsuga menziesii, (Douglas-fir) 1 25.3 90 30 GOOD 25.3 25.0 X X PROTECT 10 143 263 Pseudotsuga menziesii, (Douglas-fir) 1 28.9 100 30 GOOD 28.9 28.0 X X PROTECT 10 144 264 Pseudotsuga menziesii, (Douglas-fir) 1 15.7 90 20 GOOD 15.7 15.0 X PROTECT 6 145 265 Acer rubrum, (Red Maple) 1 10.1 55 6 GOOD 10.1 10.0 X PROTECT 5 146 266 Acer rubrum, (Red Maple) 1 8.3 45 5 GOOD 8.3 8.0 X PROTECT 4 147 267 Acer rubrum, (Red Maple) 1 8.1 45 5 GOOD 8.1 8.0 X PROTECT 4 148 268 Acer rubrum, (Red Maple) 1 6.7 45 5 GOOD 6.7 6.0 X PROTECT 4 149 269 Acer rubrum, (Red Maple) 1 6.5 30 7 GOOD 6.5 6.0 X PROTECT 4 150 270 Liquidambar styraciflua, (Sweetgum) 1 9.2 25 6 POOR 9.2 9.0 X PROTECT 4 151 271 Liquidambar styraciflua, (Sweetgum) 1 9.5 30 7 FAIR 9.5 9.0 X PROTECT 4 152 272 Liquidambar styraciflua, (Sweetgum) 1 9.2 35 7 FAIR 9.2 9.0 X PROTECT 4 153 273 Liquidambar styraciflua, (Sweetgum) 1 9.4 30 7 V. POOR 9.4 9.0 X PROTECT 4 154 274 Liquidambar styraciflua, (Sweetgum) 1 8.2 35 8 GOOD 8.2 8.0 X PROTECT 4 155 275 Liquidambar styraciflua, (Sweetgum) 1 11.3 55 10 GOOD 11.3 11.0 X PROTECT 5 156 276 Populus balsamifera, (Black Cottonwood) 1 6.1 40 6 FAIR 6.1 6.0 PROTECT DBH=Trunk diameter at 4.5 feet above grade CRZ=Critical Root Zone 17619 NE 67th Ct. Suite 100 Redmond, WA 98052 | Phone: 425.429.7800 | Fax: 425.633.2284 | www.oneatlas.com Page 4 OF 4 B APPENDIX B – TREE LOCATION MAP & PROTECTION PLAN SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B N.E. 12TH ST. (A DEDICATED PUBLIC RIGHT OF WAY) N.E. 10TH ST. ( A DEDICATED PUBLIC RIGHT OF WAY) DU V A L L A V E . N . E . ( A D E D I C A T E D P U B L I C R I G H T O F W A Y ) HO Q U I U M A V E . N . E . (A D E D I C A T E D P U B L I C R I G H T O F W A Y ) X E E E E E E E E E E E GT GT GT SS G T G T G T G T GT GT GT SD SD CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 HAZEN HIGH SCHOOL MODERNIZATION OVERALL SITE PLAN CX04 CX01 SCALE 1"=70' 35 70 1400 CX03 CX05 CX06 PROJECT WORK AREAS PROJECT WORK AREAS PROJECT WORK AREAS IMPROVED BASEBALL FIELD AND GEOTHERMAL WELL ZONE IMPROVED SOFTBALL FIELD CX02 EXISTING POWER POLE NEW ELECTRICAL PRIMARY SERVICE GEOTHERMAL WELL ZONE GEOTHERMAL PIPING IN/OUT OF BUILDING GEOTHERMAL VAULT. LOCATION TBD. OVERALL SITE PLAN 100% DD SET DJD/AJJ JAJ 08.22.24 B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description C010 DECOMMISSION EX 10,000 GAL. FUEL OIL TANK (2) TEMPORARY PORTABLES TO BE REMOVED AT END OF PROJECT MAINTAIN 20' WIDE FIRE LANE CX07 GEOTHERMAL VAULT. LOCATION TBD. SW SW SW SW SW SW SW SW 4' 4.5' 9. 9 ' 24 . 8 ' PROTECT EX CONCRETE CURB TO REMAIN (TYP) SAWCUT AND REMOVE EX CONCRETE SIDEWALK PROTECT EX CONCRETE CROSSING AND CROSSWALK STRIPING TO REMAIN INSTALL STRAW WATTLES SEE DETAIL (TYP) C110 8 REMOVE ALL (14) EX. 24" CONCRETE BOLLARDS AND SURROUNDING PAVING (TYP.) THE EXTENTS IS APPROXIMATE AND WILL BE ADJUSTED WHEN SURVEYED JOINT LINES ARE RECEIVED. SEE SHEET C201 IP IP INSTALL CB PROTECTION SEE DETAIL (TYP) C110 7 PROTECT EX 10" STORM DRAIN PIPE TO REMAIN. TOP OF PIPE IS APPROXIMATELY 2-FT BELOW EX GRADE PROTECT EX PEDESTRIAL LIGHT POLE TO REMAIN INSTALL TREE PROTECTION FENCING SEE DETAIL C110 11 VEG REMOVE EX BENCH PROTECT EX STORM CLEANOUT CASTING TO REMAIN REMOVE EX BENCH REMOVE EX FDC (OR HOSE BIB?)TO BE RELOCATED. COORDINATE WITH MECH'L ENGINEER REMOVE EX METAL RAILING EXTENTS OF PROPOSED BUILDING VESTIBULE PROTECT EX STORM CLEANOUT CASTING TO REMAIN REMOVE EX BENCH PROTECT EX BUILDING COLUMNS TO REMAIN PROTECT EX CONCRETE STAIR PAD TO REMAIN SAWCUT AND REMOVE EX CONCRETE PAVEMENT AS REQUIRED TO CONSTRUCT NEW BLDG VESTIBULE AND REGRADED PORTION OF CONCRETE PLAZA. SEE SHEET C201 SW SW SW SW SW INSTALL STRAW WATTLES SEE DETAIL (TYP) C110 8 PROTECT EX CONCRETE CURB TO REMAIN (TYP) SW SW SW SW SW SW SW SW SW S W S W S W SW SW SW SW S W S W S W S W S W SW SW S W SW SW SW PROTECT EX CONCRETE ACCESSIBLE RAMP TO REMAIN PROTECT EX PEDESTRIAL LIGHT POLE TO REMAIN INSTALL TREE PROTECTION FENCING SEE DETAIL C110 11 VEG PROTECT EX "STOP" SIGN AND POST TO REMAIN PROTECT EX FLAG POLE TO REMAIN CONTRACTOR SHALL MAKE A RECORD OF EXISTING SCORE/JOINT LINES TO BE MATCHED FOR FINISHED CONCRETE CONDITION. SEE SHEET C201 SW EX BUILDING OVERHANG/CANOPY ABOVE (TYP) 4' SAWCUT AND REMOVE EX CONCRETE SIDEWALK 7.7 ' 4' 4' SAWCUT AND REMOVE EX CONCRETE SIDEWALK PROTECT EX CONCRETE CURB TO REMAIN (TYP) CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 LEGEND SCALE 1"=10' 5 10 200 HAZEN HIGH SCHOOL MODERNIZATION DEMOLITION AND TESC PLAN TREE PROTECTION INLET PROTECTION PROPERTY LINE TEMP CONSTRUCTION FENCINGCF IP VEG SAWCUT LINE REMOVE CURBING REMOVE ASPHALT PAVEMENT REMOVE CONCRETE PAVEMENT C101 100% DD SET DJD/AJJ JAJ 08.22.24 DEMOLITION AND TESC PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description 1.SCHEDULE MAJOR LAND DISTURBING ACTIVITIES DURING THE DRY MONTHS AND ALLOW TIME BEFORE THE WET SEASON BEGINS TO ADEQUATELY STABILIZE THE DISTURBED GROUND. 2.PHASE AND/OR SCHEDULE CONSTRUCTION TO LIMIT THE AMOUNT OF DISTURBED, UNSTABILIZED SOIL EXPOSED AT ANY ONE TIME. 3.FENCE OR FLAG AREAS TO BE PROTECTED OR LEFT UNDISTURBED DURING CONSTRUCTION, INCLUDING INSTALLATION OF TEMPORARY CONSTRUCTION FENCING. 4.STRIP AND CLEAR AND GRUB FIELD SUFFICIENTLY FOR INSTALLATION OF TEMPORARY EROSION SEDIMENTATION CONTROL (ESC) BMPS. 5.INSTALL TEMPORARY ESC MEASURES INDICATED ON PLANS, INCLUDING SILT FENCE, CATCH BASIN INSERTS, AND STRAW WATTLES. COORDINATE WITH CITY OF RENTON INSPECTOR. 6.BEGIN GRADING AND EXCAVATION FOR FIELD UNDERDRAIN AND IRRIGATION PIPING, AND FOR PAVEMENT SUBGRADES. 7.TEMPORARILY STABILIZE SITE, THROUGH RE-VEGETATION, HYDROSEED, MULCHING OR OTHER APPROPRIATE BMPS AS A RESULT OF SITE GRADING IN AREAS THAT WILL NOT RECEIVE HARDSCAPE. 8.CONSTRUCT STORM AND IRRIGATION UTILITIES, CONCRETE, ASPHALT, AND PERMEABLE PAVEMENTS, AS WELL AS STAIRS, CHEEK WALLS, AND MOW STRIPS FOR FENCING. 9.PLACE FILL SECTION AND LAWN/SEED FOR PLAYFIELD. 10.REMOVE TEMPORARY ESC FACILITIES UPON COMPLETION OF CONSTRUCTION AND ONLY ONCE SITE IS STABILIZED, INSPECTED, AND APPROVED BY CITY OF RENTON INSPECTOR, TESC CONSTRUCTION SEQUENCE NOTE: INSTALL CONSTRUCTION FENCING AROUND LIMITS OF WORK TO PROTECT STAFF AND STUDENTS AND SECURE JOBSITE. CONTRACTOR SHALL ERECT FENCE AROUND JOBSITE AND ADJUST AS CONSTRUCTION CONDITIONS CHANGE OR AS PHASING ALLOWS. CONTRACTOR CAN UTILIZE EXISTING PERIMETER FENCING AS SECURITY FENCING AND THEN SUPPLEMENT ON THE WEST SIDE OF THE SITE AS NEEDED. ANY SECTIONS OF EXISTING FENCING THAT IS NOT 6-FT HIGH SHALL HAVE TEMPORARY 6-FT HIGH CHAINLINK FENCING INSTALLED NEXT TO IT. SEE DETAIL 9/C110. SEE SHEET C001 FOR CITY OF RENTON ESC STANDARD PLAN NOTES CONTINUATION - SEE TOP RIGHT CONTINUATION - SEE BOTTOM LEFT 18 2 18 1 18 0 17 9 17 8 17 7 17 6 17 5 17 4 17 3 17 2 17 1 17 0 16 9 of f s h e e t 16 7 16 8 16 6 16 5 REMOVED BY OTHERS MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 TP F TP F TP F TP F TP F TP F T P F T P F TPF TPF TPF T P F TPF TPF T P F T P F T P F TPF TPF TP F TP F TP F TP F TP F TPFTPFTPF TPF TPF TP F TP F TP F TP F TPFTPFTPF TIE BACK FLEXIBLE BRANCHES WITH WHEN INSTALLING METAL PANELS TIE BACK FLEXIBLE BRANCHES WITH WHEN INSTALLING METAL PANELS LEGEND TREE PROTECTION FENCINGT P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE □ IP IP INSTALL CB PROTECTION SEE DETAIL (TYP) C110 7 FF IS FF IS FF INTERCEPTOR SWALE WITH ROCK CHECK DAMS AT 50' O.C. SPACING SEE DETAILS C110 6 C111 8 INSTALL SILT FENCE AROUND PERIMETER OF FIELD (TYP) SEE DETAIL C111 7 CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 SCALE 1"=20' 0 10 20 40 HAZEN HIGH SCHOOL MODERNIZATION DEMOLITION AND TESC PLAN C102 100% DD SET DJD/AJJ JAJ 08.22.24 DEMOLITION AND TESC PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description LEGEND SAWCUT LINE REMOVE CURBING REMOVE ASPHALT PAVEMENT REMOVE CONCRETE PAVEMENT TREE PROTECTION INLET PROTECTION PROPERTY LINE TEMP CONSTRUCTION FENCINGCF IP VEG 1.SCHEDULE MAJOR LAND DISTURBING ACTIVITIES DURING THE DRY MONTHS AND ALLOW TIME BEFORE THE WET SEASON BEGINS TO ADEQUATELY STABILIZE THE DISTURBED GROUND. 2.PHASE AND/OR SCHEDULE CONSTRUCTION TO LIMIT THE AMOUNT OF DISTURBED, UNSTABILIZED SOIL EXPOSED AT ANY ONE TIME. 3.FENCE OR FLAG AREAS TO BE PROTECTED OR LEFT UNDISTURBED DURING CONSTRUCTION, INCLUDING INSTALLATION OF TEMPORARY CONSTRUCTION FENCING. 4.STRIP AND CLEAR AND GRUB FIELD SUFFICIENTLY FOR INSTALLATION OF TEMPORARY EROSION SEDIMENTATION CONTROL (ESC) BMPS. 5.INSTALL TEMPORARY ESC MEASURES INDICATED ON PLANS, INCLUDING SILT FENCE, CATCH BASIN INSERTS, AND STRAW WATTLES. COORDINATE WITH CITY OF RENTON INSPECTOR. 6.BEGIN GRADING AND EXCAVATION FOR FIELD UNDERDRAIN AND IRRIGATION PIPING, AND FOR PAVEMENT SUBGRADES. 7.TEMPORARILY STABILIZE SITE, THROUGH RE-VEGETATION, HYDROSEED, MULCHING OR OTHER APPROPRIATE BMPS AS A RESULT OF SITE GRADING IN AREAS THAT WILL NOT RECEIVE HARDSCAPE. 8.CONSTRUCT STORM AND IRRIGATION UTILITIES, CONCRETE, ASPHALT, AND PERMEABLE PAVEMENTS, AS WELL AS STAIRS, CHEEK WALLS, AND MOW STRIPS FOR FENCING. 9.PLACE FILL SECTION AND LAWN/SEED FOR PLAYFIELD. 10.REMOVE TEMPORARY ESC FACILITIES UPON COMPLETION OF CONSTRUCTION AND ONLY ONCE SITE IS STABILIZED, INSPECTED, AND APPROVED BY CITY OF RENTON INSPECTOR, TESC CONSTRUCTION SEQUENCENOTE: INSTALL CONSTRUCTION FENCING AROUND LIMITS OF WORK TO PROTECT STAFF AND STUDENTS AND SECURE JOBSITE. CONTRACTOR SHALL ERECT FENCE AROUND JOBSITE AND ADJUST AS CONSTRUCTION CONDITIONS CHANGE OR AS PHASING ALLOWS. CONTRACTOR CAN UTILIZE EXISTING PERIMETER FENCING AS SECURITY FENCING AND THEN SUPPLEMENT ON THE WEST SIDE OF THE SITE AS NEEDED. ANY SECTIONS OF EXISTING FENCING THAT IS NOT 6-FT HIGH SHALL HAVE TEMPORARY 6-FT HIGH CHAINLINK FENCING INSTALLED NEXT TO IT. SEE DETAIL 9/C110. SEE SHEET C001 FOR CITY OF RENTON ESC STANDARD PLAN NOTES NO TREES PRESENT MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 LEGEND TREE PROTECTION FENCINGT P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE □ IMPROVED BASEBALL FIELD. SEE LANDSCAPE PLANS AND CX03 CIVIL PLANS EXISTING CITY OF RENTON WATER EASEMENT 15' IP INSTALL CB PROTECTION SEE DETAIL (TYP) C110 7 IP PUMP "CLEAN" STORMWATER FROM TEMP SEDIMENT SETTLEMENT TANKS TO EXISTING CATCH BASIN. CONTRACTOR TO ENSURE ALL DISCHARGE MEETS TURBIDITY REQUIREMENTS. FF IS FF FF IS PUMP CONSTRUCTION STORMWATER TO SEDIMENT SETTLEMENT TANKS FF SEDIMENT TRAP WITH 55 GALLON DRUM AND SUMP INSTALLED AT LOW POINT ON-SITE. SEE DETAILS C111 2 C110 5 FF INTERCEPTOR SWALE WITH ROCK CHECK DAMS AT 50' O.C. SPACING SEE DETAILS C110 6 C111 8 SEDIMENT TRAP WITH 55 GALLON DRUM AND SUMP INSTALLED AT LOW POINT ON-SITE. SEE DETAILS C111 2 C110 5 PUMP CONSTRUCTION STORMWATER TO SEDIMENT SETTLEMENT TANKS INSTALL SILT FENCE AROUND PERIMETER OF FIELD (TYP) SEE DETAIL C111 7 INTERCEPTOR SWALE WITH ROCK CHECK DAMS AT 50' O.C. SPACING SEE DETAILS C110 6 C111 8 FF BOE = 447.09 FF CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 SCALE 1"=20' 0 10 20 40 HAZEN HIGH SCHOOL MODERNIZATION DEMOLITION AND TESC PLAN C103 100% DD SET DJD/AJJ JAJ 08.22.24 DEMOLITION AND TESC PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description LEGEND SAWCUT LINE REMOVE CURBING REMOVE ASPHALT PAVEMENT REMOVE CONCRETE PAVEMENT TREE PROTECTION INLET PROTECTION PROPERTY LINE TEMP CONSTRUCTION FENCINGCF IP VEG NOTE: INSTALL CONSTRUCTION FENCING AROUND LIMITS OF WORK TO PROTECT STAFF AND STUDENTS AND SECURE JOBSITE. CONTRACTOR SHALL ERECT FENCE AROUND JOBSITE AND ADJUST AS CONSTRUCTION CONDITIONS CHANGE OR AS PHASING ALLOWS. CONTRACTOR CAN UTILIZE EXISTING PERIMETER FENCING AS SECURITY FENCING AND THEN SUPPLEMENT ON THE WEST SIDE OF THE SITE AS NEEDED. ANY SECTIONS OF EXISTING FENCING THAT IS NOT 6-FT HIGH SHALL HAVE TEMPORARY 6-FT HIGH CHAINLINK FENCING INSTALLED NEXT TO IT. SEE DETAIL 9/C110. SEE SHEET C001 FOR CITY OF RENTON ESC STANDARD PLAN NOTES SEE SHEET C102 FOR TESC CONSTRUCTION SEQUENCE NOTES (4) 18,900 GALLON CAPACITY TEMPORARY SEDIMENT SETTLEMENT TANKS ("BAKER TANK" OR EQUAL). CONTRACTOR SHALL PROVIDE ALL PUMPS REQUIRED TO MANAGE CONSTRUCTION STORMWATER AND DISCHARGE AT THE SITE. PLEASE SEE SHEET C204 FOR A BETTER REPRESENTATION OF THE SUBJECT TREES IN RELATION TO THE WORK MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 LEGEND TREE PROTECTION FENCINGT P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE FOR TREES IMPACTED BY THE RAIN VAULT AND STORMDRAIN. PLEASE REFER TO THE ADDITIONAL SHEETS AT THE END OF THIS APPENDIX. IMPROVED BASEBALL FIELD. SEE LANDSCAPE PLANS AND CX03 CIVIL PLANS 15 ' EXISTING CITY OF RENTON WATER EASEMENT 15' EXISTING CITY OF RENTON WATER EASEMENT PRIVATE STORM MAIN CITY OF RENTON WATER MAIN REMOVE PORTION OF EX GRASS FIELD AS REQ'D TO INSTALL NEW GEOTHERMAL SERVICE AND RETURN PIPING AND VAULT AND ELECTRICAL CONDUITS. SEE SHEET C204 (TYP) IP IP INSTALL CB PROTECTION SEE DETAIL (TYP) C110 7 IP RELOCATE EX BASEBALL STORAGE SHIPPING CONTAINER COORDINATE LOCATION WITH OWNER. CONTRACTOR SHALL ASSUME A 600 SQ FT 6" THICK CONCRETE PAD FOR STORAGE CONTAINER AND 250 SF 6" CONCRETE PAD FOR PORTABLE TOILETS FOR PRICING SAWCUT AND REMOVE EX ASPHALT PAVEMENT FOR UTILITY INSTALLATION SEE SHEET C204 FF REMOVE GRAVEL SAWCUT AND REMOVE PORTION OF EX CONCRETE PAVEMENT FOR NEW MECH'L PAD INSTALLATION. SEE SHEET C204 CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 SCALE 1"=10' 5 10 200 HAZEN HIGH SCHOOL MODERNIZATION DEMOLITION AND TESC PLAN C104 100% DD SET DJD/AJJ JAJ 08.22.24 DEMOLITION AND TESC PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description NOTE: INSTALL CONSTRUCTION FENCING AROUND LIMITS OF WORK TO PROTECT STAFF AND STUDENTS AND SECURE JOBSITE. CONTRACTOR SHALL ERECT FENCE AROUND JOBSITE AND ADJUST AS CONSTRUCTION CONDITIONS CHANGE OR AS PHASING ALLOWS. CONTRACTOR CAN UTILIZE EXISTING PERIMETER FENCING AS SECURITY FENCING AND THEN SUPPLEMENT ON THE WEST SIDE OF THE SITE AS NEEDED. ANY SECTIONS OF EXISTING FENCING THAT IS NOT 6-FT HIGH SHALL HAVE TEMPORARY 6-FT HIGH CHAINLINK FENCING INSTALLED NEXT TO IT. SEE DETAIL 9/C110. SEE SHEET C001 FOR CITY OF RENTON ESC STANDARD PLAN NOTES SEE SHEET C102 FOR TESC CONSTRUCTION SEQUENCE NOTES LEGEND SAWCUT LINE REMOVE CURBING REMOVE ASPHALT PAVEMENT REMOVE CONCRETE PAVEMENT TREE PROTECTION INLET PROTECTION PROPERTY LINE TEMP CONSTRUCTION FENCINGCF IP VEG 13 6 13 2 13 3 REMOVED BY OTHERS 13 4 13 5 TREE PROTECTION FENCING IS NOT NEEDED AS NO WORK IS OCCURING IN THE VICNITY. TREE PROTECTION FENCING IS NOT NEEDED AS NO WORK IS OCCURING IN THE VICNITY. TREE PROTECTION FENCING IS NOT NEEDED AS NO WORK IS OCCURING IN THE VICNITY.MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 LEGEND TREE PROTECTION FENCINGT P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B N.E. 10TH ST. ( A DEDICATED PUBLIC RIGHT OF WAY) IMPROVED SOFTBALL FIELD. SEE LANDSCAPE PLANS AND CX05 CIVIL PLANS IP IP IP IS FF IS FF (2) 18,900 GALLON CAPACITY TEMPORARY SEDIMENT SETTLEMENT TANKS ("BAKER TANK" OR EQUAL). CONTRACTOR SHALL PROVIDE ALL PUMPS REQUIRED TO MANAGE CONSTRUCTION STORMWATER AND DISCHARGE AT THE SITE. PUMP "CLEAN" STORMWATER FROM TEMP SEDIMENT SETTLEMENT TANKS TO EXISTING CATCH BASIN. CONTRACTOR TO ENSURE ALL DISCHARGE MEETS TURBIDITY REQUIREMENTS. INSTALL CB PROTECTION SEE DETAIL (TYP) C110 7 PUMP CONSTRUCTION STORMWATER TO SEDIMENT SETTLEMENT TANKS SEDIMENT TRAP WITH 55 GALLON DRUM AND SUMP INSTALLED AT LOW POINT ON-SITE. SEE DETAILS C110 5 C111 2 FF FF IS INTERCEPTOR SWALE WITH ROCK CHECK DAMS AT 50' O.C. SPACING SEE DETAILS C110 6 C111 8 INSTALL SILT FENCE AROUND PERIMETER OF FIELD (TYP) SEE DETAIL C111 7 BOE = 472.53 BOE = 472.53 CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 SCALE 1"=20' 0 10 20 40 HAZEN HIGH SCHOOL MODERNIZATION DEMOLITION AND TESC PLAN C105 100% DD SET DJD/AJJ JAJ 08.22.24 DEMOLITION AND TESC PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description NOTE: INSTALL CONSTRUCTION FENCING AROUND LIMITS OF WORK TO PROTECT STAFF AND STUDENTS AND SECURE JOBSITE. CONTRACTOR SHALL ERECT FENCE AROUND JOBSITE AND ADJUST AS CONSTRUCTION CONDITIONS CHANGE OR AS PHASING ALLOWS. CONTRACTOR CAN UTILIZE EXISTING PERIMETER FENCING AS SECURITY FENCING AND THEN SUPPLEMENT ON THE WEST SIDE OF THE SITE AS NEEDED. ANY SECTIONS OF EXISTING FENCING THAT IS NOT 6-FT HIGH SHALL HAVE TEMPORARY 6-FT HIGH CHAINLINK FENCING INSTALLED NEXT TO IT. SEE DETAIL 9/C110. SEE SHEET C001 FOR CITY OF RENTON ESC STANDARD PLAN NOTES SEE SHEET C102 FOR TESC CONSTRUCTION SEQUENCE NOTES LEGEND SAWCUT LINE REMOVE CURBING REMOVE ASPHALT PAVEMENT REMOVE CONCRETE PAVEMENT TREE PROTECTION INLET PROTECTION PROPERTY LINE TEMP CONSTRUCTION FENCINGCF IP VEG 18 5 TREE PROTECTION FENCING IS NOT NEEDED AS NO WORK IS OCCURING IN THE VICNITY. MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 LEGEND TREE PROTECTION FENCINGT P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE SW SW SW SW SW SW SW SW PROTECT EX VAULT ACCESS HATCH; IF OPEN GRATING, CONTRACTOR SHALL COVER WITH FABRIC AND OR PVC LINER AND TIE DOWN TO PROTECT VAULT OPENING SAWCUT AND REMOVE EX CONCRETE PAVEMENT AS REQUIRED TO CONSTRUCT NEW 6" CONCRETE GREENHOUSE PAD. SEE SHEET C206 INSTALL STRAW WATTLES SEE DETAIL (TYP) C110 8 EXISTING IRRIGATION LINE. CONTRACTOR TO CONFIRM AND SHALL POTHOLE AND CONFIRM LOCATION, DEPTH, AND MATERIAL EXISTING WATER SPIGOT ON BUILDING EXISTING DILUTION TRAP TO BE DEMOLISHED EXISTING 10" SEWER LINE TO REMAIN EXISTING 10" STORM PIPE TO REMAIN EXISTING 6" ACID WASTE LINE TO BE ABANDONED CUT AND CAP AND FILL WITH CDF PER PROJECT SPECIFICATIONS EXISTING ACID WASTE LINE TO BE BUILDING TO BE ABANDONED. CUT & CAP (TYP) EXISTING ACID WASTE LINE TO BE BUILDING TO BE ABANDONED. REMOVE EX 8" DECIDUOUS TREE IP VEG REMOVE EX 5" DECIDUOUS TREE INSTALL TREE PROTECTION FENCING SEE DETAIL C110 11 IP IP INSTALL CB PROTECTION SEE DETAIL (TYP) C110 7 PROTECT EXISTING 2" IRRIGATION LINE TO REMAIN REMOVE EX SEWER CLEANOUT SAWCUT AND DEMO EX CONCRETE PAVEMENT TO CUT, CAP, AND ABANDON-IN-PLACE EX ACID WASTE PIPING (TYP)EXISTING ACID WASTE LINE TO BE BUILDING TO BE ABANDONED. DEMOLITION AND TESC PLAN C106 100% DD SET DJD/AJJ JAJ 08.22.24 DEMOLITION AND TESC PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 SCALE 1"=10' 5 10 200 HAZEN HIGH SCHOOL MODERNIZATION DEMOLITION AND TESC PLAN NOTE: INSTALL CONSTRUCTION FENCING AROUND LIMITS OF WORK TO PROTECT STAFF AND STUDENTS AND SECURE JOBSITE. CONTRACTOR SHALL ERECT FENCE AROUND JOBSITE AND ADJUST AS CONSTRUCTION CONDITIONS CHANGE OR AS PHASING ALLOWS. CONTRACTOR CAN UTILIZE EXISTING PERIMETER FENCING AS SECURITY FENCING AND THEN SUPPLEMENT ON THE WEST SIDE OF THE SITE AS NEEDED. ANY SECTIONS OF EXISTING FENCING THAT IS NOT 6-FT HIGH SHALL HAVE TEMPORARY 6-FT HIGH CHAINLINK FENCING INSTALLED NEXT TO IT. SEE DETAIL 9/C110. SEE SHEET C001 FOR CITY OF RENTON ESC STANDARD PLAN NOTES SEE SHEET C102 FOR TESC CONSTRUCTION SEQUENCE NOTES LEGEND SAWCUT LINE REMOVE CURBING REMOVE ASPHALT PAVEMENT REMOVE CONCRETE PAVEMENT TREE PROTECTION INLET PROTECTION PROPERTY LINE TEMP CONSTRUCTION FENCINGCF IP VEG C106 100% DD SET DJD/AJJ JAJ 08.22.24 DEMOLITION AND TESC PLAN 15 1 15 0 14 9 14 8 14 7 14 6 14 5 14 4 14 3 14 2 14 1 14 0 13 9 13 8 13 7 15 2 15 3 15 4 15 5 15 6 15 7 15 8 15 9 16 0 16 1 16 2 16 3 16 4 T P F T P F TPF TPF TPF TPF TPF TPF TPF TPF TPF TPF TPF TPF TPF TP F TP F TPF TPF TPF TPF TPF TPF TPF TPF TPF TPF TP F TP F TP F TPF TPF TP F TP F TPF TPF MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 LEGEND TREE PROTECTION FENCINGT P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE □ □ HO Q U I U M A V E . N . E . (A D E D I C A T E D P U B L I C R I G H T O F W A Y ) PUMP "CLEAN" STORMWATER FROM TEMP SEDIMENT SETTLEMENT TANKS TO EXISTING CATCH BASIN. CONTRACTOR TO ENSURE ALL DISCHARGE MEETS TURBIDITY REQUIREMENTS. INSTALL CB PROTECTION SEE DETAIL (TYP) C110 7 IP IP INSTALL CB PROTECTION SEE DETAIL (TYP) C110 7 S W SW SW S W REMOVE ALL (5) EX. 24" CONCRETE BOLLARDS AND SURROUNDING PAVING (TYP.) THE EXTENTS IS APPROXIMATE AND WILL BE ADJUSTED WHEN SURVEYED JOINT LINES ARE RECEIVED. SEE SHEET C207 INSTALL STRAW WATTLES SEE DETAIL (TYP) C110 8 PROTECT EX CONCRETE CURB TO REMAIN (TYP) 4' IP REMOVE/RELOCATE EX "POOL PARKING ONLY" SIGN AND POST REMOVE/RELOCATE EX PARKING LOT LIGHT CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 SCALE 1"=20' 0 10 20 40 HAZEN HIGH SCHOOL MODERNIZATION DEMOLITION AND TESC PLAN C107 100% DD SET DJD/AJJ JAJ 08.22.24 DEMOLITION AND TESC PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description NOTE: INSTALL CONSTRUCTION FENCING AROUND LIMITS OF WORK TO PROTECT STAFF AND STUDENTS AND SECURE JOBSITE. CONTRACTOR SHALL ERECT FENCE AROUND JOBSITE AND ADJUST AS CONSTRUCTION CONDITIONS CHANGE OR AS PHASING ALLOWS. CONTRACTOR CAN UTILIZE EXISTING PERIMETER FENCING AS SECURITY FENCING AND THEN SUPPLEMENT ON THE WEST SIDE OF THE SITE AS NEEDED. ANY SECTIONS OF EXISTING FENCING THAT IS NOT 6-FT HIGH SHALL HAVE TEMPORARY 6-FT HIGH CHAINLINK FENCING INSTALLED NEXT TO IT. SEE DETAIL 9/C110. SEE SHEET C001 FOR CITY OF RENTON ESC STANDARD PLAN NOTES SEE SHEET C102 FOR TESC CONSTRUCTION SEQUENCE NOTES LEGEND SAWCUT LINE REMOVE CURBING REMOVE ASPHALT PAVEMENT REMOVE CONCRETE PAVEMENT TREE PROTECTION INLET PROTECTION PROPERTY LINE TEMP CONSTRUCTION FENCINGCF IP VEG 13 1 13 0 12 9 12 8 12 7 12 5 12 6 12 4 12 3 12 2 12 0 12 1 18 5 18 6 11 7 11 8 11 9 o f f sh e e t 18 3 18 4 26 5 26 6 26 7 26 8 26 9 27 0 27 1 27 2 27 3 27 4 27 5 27 6 TPF TPF TP F TP F TP F TPF TREE PROTECTION FENCING IS NOT NEEDED AS NO WORK IS OCCURING IN THE VICNITY. TREE PROTECTION FENCING IS NOT NEEDED AS NO WORK IS OCCURING IN THE VICNITY. TREE PROTECTION FENCING IS NOT NEEDED AS NO WORK IS OCCURING IN THE VICNITY. TREE PROTECTION FENCING IS NOT NEEDED AS NO WORK IS OCCURING IN THE VICNITY. MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 LEGEND TREE PROTECTION FENCINGT P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE TPF TPF TPF TPF TPF TPF TPF TPF TPF TPF TPF TPF TP F TP F TP F TP F C APPENDIX C – CRZ IMPACT ANALYSIS NEW SECURITY ENTRY VESTIBULE PER ARCH'L AND STRUCT'L PLANS NEW TRAFFIC RATED BOLLARDS 6' 4' FF=468.13 NEW BENCH COORD WITH OWNER PROTECT EX STORM CLEANOUT CASTING TO REMAIN. ADJUST CASTING TO FINISH GRADE PROTECT EX STORM CLEANOUT CASTING TO REMAIN. ADJUST CASTING TO FINISH GRADE PROTECT EX BUILDING COLUMN TO REMAIN PROTECT EX CONCRETE STAIR PAD TO REMAIN NEW BENCH COORD WITH OWNER MATCH EX CONCRETE (TYP) 4 6 8 467.58(EX) 467.56(EX) 467.60(EX) 467.63(EX) 467.66(EX) 467.72(EX) 467.82(EX) 467.92(EX) 467.99(EX)467.96(EX)468.04(EX) 468.05(EX) 468.15(EX) 468.13 468.13 468.13 468.13 468.13 468.13 467.60(EX) 467.62(EX) 467.66(EX) 467.73(EX) 468.01 (EX) CONTRACTOR SHALL MAKE A RECORD OF EXISTING SCORE/JOINT LINES TO BE MATCHED FOR FINISHED CONCRETE CONDITION. (TYP) 468.02(EX) EX BUILDING OVERHANG/CANOPY ABOVE (TYP) CONCRETE PLAZA SIDEWALK SEE DETAIL C210 3 4' 10 ' NEW NON-REMOVEABLE HEAVY DUTY VEHICULAR RATED SECURITY BOLLARD (TYP UNLESS OTHERWISE NOTED) SEE DETAIL C211 8 5. 3 ' 6 ' 1.4'INSTALL NEW REMOVEABLE HEAVY DUTY VEHICULAR RATED SECURITY BOLLARD (3 TOTAL) (FINAL BOLLARD LAYOUT TBD) SEE DETAIL C211 6 7.9 ' RESTORE CONCRETE SIDEWALK SEE DETAIL (TYP) C210 3 1.3' 4' NEW NON-REMOVEABLE HEAVY DUTY VEHICULAR RATED SECURITY BOLLARD (TYP UNLESS OTHERWISE NOTED) SEE DETAIL C211 8 4' 9. 8 ' 4.6'11 . 8 ' 10 ' 24 . 8 ' 3' CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 LEGEND PROPERTY LINE CONTOUR (INDEX) CONTOUR GRADE BREAK SPOT ELEVATION 110 109.36 109 TC 109.86 BC 109.36 ASPHALT PAVEMENT CONCRETE CURB CONCRETE PAVEMENT SCALE 1"=10' 5 10 200 HAZEN HIGH SCHOOL MODERNIZATION CIVIL SITE PLAN C201 100% DD SET DJD/AJJ JAJ 08.22.24 CIVIL SITE PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description CONTINUATION - SEE TOP RIGHT CONTINUATION - SEE BOTTOM LEFT PROTECT EX CONCRETE CROSSING AND CROSSWALK STRIPING TO REMAIN RESTORE CONCRETE SIDEWALK SEE DETAIL (TYP) C210 3 18 2 18 1 18 0 NO IMPACT NO IMPACT CUMULATIVE CRZ IMPACT: 4 PERCENT REMOVED BY OTHERS LEGEND TREE PROTECTION FENCING CRITICAL ROOT ZONE T P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 16 5 16 9 OF F SH E E T 16 7 16 8 16 6 17 9 17 8 17 7 17 6 17 5 17 4 17 3 17 2 17 1 17 0 □ CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 LEGEND PROPERTY LINE CONTOUR (INDEX) CONTOUR GRADE BREAK SPOT ELEVATION 110 109.36 109 TC 109.86 BC 109.36 ASPHALT PAVEMENT CONCRETE CURB CONCRETE PAVEMENT SCALE 1"=20' 0 10 20 40 HAZEN HIGH SCHOOL MODERNIZATION CIVIL SITE PLAN C202 100% DD SET DJD/AJJ JAJ 08.22.24 CIVIL SITE PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description NO IMPACTED TREES ON THIS SHEET LEGEND TREE PROTECTION FENCING CRITICAL ROOT ZONE T P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 □ XX X X X X X X IMPROVED BASEBALL FIELD WITH SYNTHETIC SURFACE, UNDERDRAIN, AND DETENTION. SEE LANDSCAPE PLANS AND CX03 CIVIL PLANS T E E E E E E GT GT GT GT GT GT GT GT GT GT GT GT G T G T G T G T G T G T G T G T G T G T G T G T G T G T G T G T GT GT GT GT GT GT GT GT GT GT GT GT SD SD SD SD EXISTING CITY OF RENTON WATER EASEMENT 15' GEOTHERMAL VAULT. LOCATION TBD. GEOTHERMAL VAULT. LOCATION TBD. 120 LF 12" SD 10 LF 12" SD TYPE 2 SDMH - 54" CONTROL STRUCTURE RAINVAULT 5.0 STACK 10,050 SF FOOTPRINT 3,151 PENT MODULE STACKS WITH 24" GRAVEL PERIMETER, 6" GRAVEL BASE, 12" GRAVEL TOP PROVIDING 64,600 CF OF LIVE STORAGE VOLUME CONNECT TO EXISTING STORM IN DUVALL AVE NE RIGHT-OF-WAY (2) 8" GEOTHERMAL SERVICE AND RETURN LINES PER MECH'L PLANS CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 LEGEND PROPERTY LINE CONTOUR (INDEX) CONTOUR GRADE BREAK SPOT ELEVATION 110 109.36 109 TC 109.86 BC 109.36 ASPHALT PAVEMENT CONCRETE CURB CONCRETE PAVEMENT SCALE 1"=20' 0 10 20 40 HAZEN HIGH SCHOOL MODERNIZATION CIVIL SITE PLAN C203 100% DD SET DJD/AJJ JAJ 08.22.24 CIVIL SITE PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description FOR TREES IMPACTED BY THE STORMWATER VAULT AND STORMDRAIN. PLEASE REFER TO THE ADDITIONAL SHEETS AT THE END OF THIS APPENDIX. PLEASE SEE SHEET C204 FOR A BETTER REPRESENTATION OF THE SUBJECT TREES IN RELATION TO THE WORK LEGEND TREE PROTECTION FENCING CRITICAL ROOT ZONE T P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 XXXX X X X X X XX X X X X X X X X X XXX IMPROVED BASEBALL FIELD WITH SYNTHETIC SURFACE, UNDERDRAIN, AND DETENTION. SEE LANDSCAPE PLANS AND CX03 CIVIL PLANS 15 ' EXISTING CITY OF RENTON WATER EASEMENT 15' EXISTING CITY OF RENTON WATER EASEMENT PRIVATE SEWER MAIN PRIVATE STORM MAIN CITY OF RENTON WATER MAIN T E E E E E E E E E E E E E E E E E E E E E E E GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT GT DOUBLE GATE FENCED ENCLOSURE ELECTRICAL EQUIPMENT (EXTENTS TBD) ELECTRICAL TRANSFORMER, SEE ELEC. PLANS PAD ELEVATION AT 464.0 FFE=464.0 NEW ELECTRICAL PRIMARY SERVICE EXISTING DOUBLE DOORS TO MECHANICAL ROOM 1 C220 C220 2 HEAVY DUTY ASPHALT PAVING SEE DETAIL C210 7 HEAVY DUTY ASPHALT PAVING SEE DETAIL C210 7 PROTECT EX STORM STRUCTURE TO REMAIN 6" CONCRETE PAD SEE DETAIL C210 4 6" CONCRETE PAD FOR MECH'L YARD SEE DETAIL C210 4 (2) 8" GEOTHERMAL SERVICE AND RETURN LINES PER MECH'L PLANS (2) 8" GEOTHERMAL SERVICE AND RETURN LINES PER MECH'L PLANS CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 LEGEND PROPERTY LINE CONTOUR (INDEX) CONTOUR GRADE BREAK SPOT ELEVATION 110 109.36 109 TC 109.86 BC 109.36 ASPHALT PAVEMENT CONCRETE CURB CONCRETE PAVEMENT SCALE 1"=10' 5 10 200 HAZEN HIGH SCHOOL MODERNIZATION CIVIL SITE PLAN C204 100% DD SET DJD/AJJ JAJ 08.22.24 CIVIL SITE PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description NO IMPACTED TREES ON THIS SHEET LEGEND TREE PROTECTION FENCING CRITICAL ROOT ZONE T P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 13 6 13 2 13 3 13 4 13 5 REMOVED BY OTHERS SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B SU B N.E. 10TH ST. ( A DEDICATED PUBLIC RIGHT OF WAY) E E E E E E E E E E E E E E E E E E E E E E SD SD SD SD SD SD SD IMPROVED SOFTBALL FIELD WITH SYNTHETIC SURFACE, UNDERDRAIN, AND DETENTION. SEE LANDSCAPE PLANS AND CX05 CIVIL PLANS EX UTILITY POLE NEW ELECTRICAL PRIMARY SERVICE CONNECT TO EXISTING STORM 47 LF 12" SD 47 LF 12" SD TYPE 2 SDMH - 54" CONTROL STRUCTURE RAINVAULT 2.0 STACK 11,136 SF FOOTPRINT 3,200 DOUBLE MODULE STACKS WITH 24" GRAVEL PERIMETER, 6" GRAVEL BASE, 12" GRAVEL TOP PROVIDING 27,375 CF OF LIVE STORAGE VOLUME RAINVAULT 2.0 STACK 11,136 SF FOOTPRINT 3,200 DOUBLE MODULE STACKS WITH 24" GRAVEL PERIMETER, 6" GRAVEL BASE, 12" GRAVEL TOP PROVIDING 27,375 CF OF LIVE STORAGE VOLUME TYPE 2 SDMH - 54" CONTROL STRUCTURE 20 LF 10" SD 77 LF 10" SD TYPE 1 CB CONNECT TO EX STORM CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 LEGEND PROPERTY LINE CONTOUR (INDEX) CONTOUR GRADE BREAK SPOT ELEVATION 110 109.36 109 TC 109.86 BC 109.36 ASPHALT PAVEMENT CONCRETE CURB CONCRETE PAVEMENT SCALE 1"=20' 0 10 20 40 HAZEN HIGH SCHOOL MODERNIZATION CIVIL SITE PLAN C205 100% DD SET DJD/AJJ JAJ 08.22.24 CIVIL SITE PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description NO IMPACTED TREES ON THIS SHEET LEGEND TREE PROTECTION FENCING CRITICAL ROOT ZONE T P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 18 5 SSSSSSSSSSSSSSSSSSSS ANTICIPATED NEW UTILITIES IN COURTYARD AREA. ROUTING AND EXTENTS TO BE DETERMINED 6" CONCRETE PAD FOR GREENHOUSE SEE DETAIL C210 4 PLUMBING POC FOR NEW ACID WASTE LINE. SEE MECH'L PLANS FOR NEW ACID WASTE PIPING IE UNKNOWN CONTRACTOR SHALL POTHOLE AND VERIFY LOCATION, DEPTH, AND MATERIAL PRIOR TO STARTING CONSTRUCTION NEW 6" PP ACID WASTE STUB TO BUILDING. LINE WILL EXIT BUILDING HERE AND WILL RUN A NEW LINE SOUTH TO NEW POC. SEE MECH'L PLANS FOR NEW ACID WASTE PIPING NEW 6" PP ACID WASTE STUB TO BUILDING 98 LF 6" PP ACID WASTE LINE @ X.X% SSCO RIM TO GRADE IE REPLACE CONCRETE SIDEWALK SEE DETAIL C210 3 CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 LEGEND PROPERTY LINE CONTOUR (INDEX) CONTOUR GRADE BREAK SPOT ELEVATION 110 109.36 109 TC 109.86 BC 109.36 ASPHALT PAVEMENT CONCRETE CURB CONCRETE PAVEMENT SCALE 1"=10' 5 10 200 HAZEN HIGH SCHOOL MODERNIZATION CIVIL SITE PLAN C206 100% DD SET DJD/AJJ JAJ 08.22.24 CIVIL SITE PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description 15 2 15 3 15 4 15 6 15 7 15 8 16 0 16 2 16 3 REMOVE TREE NO. 159. A NON- SIGNFICANT TREE IN DIRECT CONFLICT WITH THE WORK 4' - 0 " 4' - 0 " 4' - 0 " NO IMPACT 16 1 CUMULATIVE CRZ IMPACT: 16 PERCENT CUMULATIVE CRZ IMPACT: 40 PERCENT CUMULATICE CRZ IMPACT: 25 PERCENT CUMULATIVE CRZ IMPACT: 14 PERCENT CUMULATIVE CRZ IMPACT: 1 PERCENT NO IMPACT REMOVE TREE NO. 155. A NON-SIGNFICANT TREE IN DIRECT CONFLICT WITH THE WORK LEGEND TREE PROTECTION FENCING CRITICAL ROOT ZONE T P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 15 1 15 0 14 9 14 8 14 7 14 6 14 5 14 4 14 3 14 2 14 1 14 0 13 9 13 8 13 7 16 4 NO IMPACT TO ENTIRE GROUPING. ALL TREES NON-SIGNIFICANT NO IMPACT SUBJECT TREE □ □ HO Q U I U M A V E . N . E . (A D E D I C A T E D P U B L I C R I G H T O F W A Y ) 4' RESTORE CONCRETE SIDEWALK SEE DETAIL (TYP) C210 3 NEW NON-REMOVEABLE HEAVY DUTY VEHICULAR RATED SECURITY BOLLARD (TYP UNLESS OTHERWISE NOTED) SEE DETAIL C211 8 PROPOSED PORTABLE FFE 471.87 PROPOSED PORTABLE FFE 471.90 470.51 (EX) 470.70 (EX) 470.36 (EX) 470.57 (EX) 470.41 (EX)470.27 (EX) 470.32 (EX) 470.27 (EX) 470.30 (EX) 470.40 (EX) 470.72 (EX) 470.67 (EX) 470.55 (EX) 470.57 (EX) 470.67 (EX) 470.63 (EX) 470.55 (EX)470.44 (EX) GRATED METAL STAIRS, RAMPS, AND LANDINGS PER PORTABLE MANUFACTURER(TYP) PROPOSED MODULAR BUILDINGS PER ARCH'L PLANS 471.90 471.90 471.36 471.90 471.87 471.87 471.36 471.87 TYPE 2 SDMH - 54" CONTROL STRUCTURE TYPE 1 CB CITY OF RENTON IN COMPLIANCE WITH CITY OF RENTON STANDARDS 43667 NSTATE O F WASH I N G T O N R EGI S T E R E D P R O F E S SIONAL E N G I N EER O S B O CAJA.DLARE J C2 4 0 0 0 4 5 0 LEGEND PROPERTY LINE CONTOUR (INDEX) CONTOUR GRADE BREAK SPOT ELEVATION 110 109.36 109 TC 109.86 BC 109.36 ASPHALT PAVEMENT CONCRETE CURB CONCRETE PAVEMENT SCALE 1"=20' 0 10 20 40 HAZEN HIGH SCHOOL MODERNIZATION CIVIL SITE PLAN C207 100% DD SET DJD/AJJ JAJ 08.22.24 CIVIL SITE PLAN B C E H G D F AR C H I T E C T U R E IN T E G R U S & YG H OF C O L L A B O R A T I O N A Job No.: Drawn By: Checked by: Date: 1 1 7 S O U T H M A I N S T R E E T , S U I T E 1 0 0 , S E A T T L E , W A . 9 8 1 0 4 T E L E P H O N E : ( 2 0 6 ) 6 2 8 - 3 1 3 7 F A X : ( 2 0 6 ) 6 2 8 - 3 1 3 8 22318.00 RE N T O N S C H O O L D I S T R I C T 11 0 1 H O Q U I A M A V E N E R E N T O N , W A 9 8 0 5 9 HA Z E N H I G H S C H O O L M O D E R N I Z A T I O N Revisions #Date Description NOTE:SEE ELECTRICAL PLANS FOR POWER AND COMM FEEDS TO PORTABLE NOTE:SET PORTABLE FFE 14" ABOVE HIGHEST EXISTING GRADE ELEVATION CONTRACTOR SHALL VERIFY EX GRADES PRIOR TO CONSTRUCTION AND NOTIFY CIVIL ENGINEER AND ARCHITECT IF CONFLICTS NOTE:CONTRACTOR SHALL UTILIZE PUBLIC AND PRIVATE UTILITY LOCATES TO VERIFY EX UTILITIES NOTE:PROPOSED PORTABLES ARE "DRY" AND WILL NOT HAVE NEW WATER OR SEWER SERVICES PROVIDED NOTE:NEAT CUT IN PROPOSED PORTABLE FOOTINGS APPROXIMATELY 2-FT BELOW GRADE. RESTORE ASPHALT PAVEMENT PER DETAIL 7/C210 (HEAVY DUTY) COORDINATE WITH SCHOOL DISTRICT FOR ACCESS TO AND FROM PROJECT SITE REMOVE NON-SIGNIFICANT TREE 11 8 18 3 CUMULATIVE CRZ IMPACT: 2 PERCENT NO IMPACT 11 9 MARKUPS BY SHANNON INGEBRIGHT; CERTIFIED ARBORIST. ATLAS TECHNICAL CONSULTANTS. SEPTEMBER 27, 2024. 570-351-1333 LEGEND TREE PROTECTION FENCING CRITICAL ROOT ZONE T P F SURVEYED TREES AREA OF PROPOSED IMPACTS WITHIN THE CRZ REMOVE TREE 12 0 12 1 26 5 26 6 26 7 26 8 26 9 27 0 27 1 27 2 27 3 27 4 27 5 13 0 12 9 12 8 12 7 12 512 6 12 4 12 3 12 2 27 6 18 5 11 7 NO IMPACT TO THIS GROUPING NO IMPACT TO THIS GROUPING NO IMPACT NO IMPACT NO IMPACT