No preview available
HomeMy WebLinkAboutTR _Arborist Report_Nielsen short plat_201021_v1.pdf A.B.C Consulting Arborists LLC Accurate Balanced Certified Nielsen Short-Plat Tree Protection Plan February 28, 2019 PREPARED FOR: Kris Nielsen 3835 Lincoln Ave NE Renton, WA 98056 PREPARED BY: A.B.C. Consulting Arborists LLC Daniel Maple, Registered Consulting Arborist #627 ISA Municipal Specialist # PN-7970AM ISA Tree Risk Assessment Qualified (TRAQ) ISA Board Certified Master Arborist #PN-7970BM Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 2 of 26 TABLE OF CONTENTS CONSULTING ARBORIST .................................................................................................................... 2 ASSIGNMENT .......................................................................................................................................... 3 LIMITATIONS OF ASSIGNMENT ...................................................................................................... 3 METHODOLOGY ................................................................................................................................... 3 SITE ........................................................................................................................................................... 3 TREE LOCATION AND ID .................................................................................................................... 3 TREES ....................................................................................................................................................... 4 TREE PROTECTION ZONES (TPZ) .................................................................................................... 4 CRITICAL ROOT ZONES (CRZ) ......................................................................................................... 5 FENCING .................................................................................................................................................. 5 ROOT PROTECTION ............................................................................................................................. 6 CERTIFICATION .................................................................................................................................... 6 ATTACHMENTS ..................................................................................................................................... 7 CONSULTING ARBORIST Daniel J. Maple / A.B.C. Consulting Arborists, LLC Email: Daniel@AbcArborist.Com Cell Phone: (509) 953-0293 Certifications ASCA Registered Consulting Arborist (RCA) # 627 ISA Board Certified Master Arborist (BCMA) PN-7970BM ISA Certified Arborist Municipal Specialist PN-7970AM ISA Tree Risk Assessment Qualified (TRAQ) June 30, 2020 SAF Qualified Tree Farm Inspector # 169449 Commercial Applicator # 92432 Commercial UAV Airman Pilot (Drone) # 4135495 Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 3 of 26 ASSIGNMENT Provide a tree inventory and protection plan for a proposed short-plat. • Assess the trees for pre-& post construction viability. • General health and condition of the trees. • Provide Tree Protection Zones (TPZ) • Provide Critical Root Zones (CRZ) • Provide TPZ, CRZ fencing requirements and instructions. • Provide observations, facts, findings and recommendations in a professionally written report. LIMITATIONS OF ASSIGNMENT This report is a limited to a Visual Assessment (VA) of the site and the trees. It is not a risk assessment, structural assessment or comprehensive Health assessment. The report is limited to the scope of the assignment. METHODOLOGY To evaluate the trees, as well as to prepare this report, I drew upon my 30+ years of experience in the field of arboriculture and my formal education. I followed the protocol of the International Society of Arboriculture (ISA) and I performed my assessment using and/or considering the following Best Management Practices: ANSI A300 Part 2 – Soil Management a.) Modification b.) Fertilization & c.) Drainage. ANSI A300 Part 5 – Managing Trees During Site Planning, Site Development, and Construction. ANSI A300 Part 9 – Tree Risk Assessment (Second Edition). ISA BMP’s – Tree Inventories (Second Edition 2013) Best Management Practices were developed to aid in the interpretation of professional standards and guide work practices based upon current science and technology. Using this process, I performed my assessment, which included looking at the overall health of the trees as well as the site conditions. This is a scientifically based process to look at the entire site, surrounding land and soil, as well as a general look at the trees themselves. SITE A 39,960 sq. ft. (.92-acre) site, Zoned R-8, proposed for a 2-lot short-plat. Potential erosion conditions were found on the western ½ of the site using King County iMap. Soils are generally native, moderate in depth and well drained. No other relevant site conditions were noted. TREE LOCATION AND ID The trees were geo-tagged and are referenced as 1-36. There were no offsite trees with driplines over proposed improvements or construction activity. Please refer to Attachment 1, Tree Plotter Image for an orientation to the site and the approximate location of the trees. Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 4 of 26 TREES There were 36 trees on the site. 14 are in a critical area, and 18 of the remaining 22 are proposed for retention. See Attachment 3, Tree Retention Calculations. Critical Area Trees There were 14 trees located within a critical area on the western portion of the site. Non-viable or Hazard Trees There were no non-viable or hazard trees on the site. Trees to be Removed for Improvements 4 trees conflict with the proposed site improvements and will be removed Trees to be Retained 18 healthy viable trees in fair to excellent condition will be retained Offsite Trees There are no offsite trees with driplines that extend over construction areas Impacts With the installation of the tree protection fencing prior to development activity and by following the outlined tree protection instructions impacts to the on and offsite trees will be minimal. Supplemental Trees/Replanting We are retaining 18 trees which is 11 more than the minimum of 7 trees required by city code. No supplemental trees or replanting is required. See Attachment 3, Tree Retention Calculations. TREE PROTECTION ZONES (TPZ) In order for trees to survive the stresses placed upon them in the construction process, tree protection must be planned in advance of equipment arrival on site. If tree protection is not planned integral with the design and layout of the project, the trees will suffer needlessly and possibly die. With proper preparation, often costing little or nothing extra to the project budget, trees can survive and thrive after construction. This is critical for tree survival because damage prevention is the single most effective treatment for trees on construction sites. Once trees are damaged, the treatment options available are limited. Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 5 of 26 General The TPZ is the optimal protection zone set to preserve trees during construction. The TPZ radius generally is 8-Inches to 18-Inches of protection for every 1-Inch of DBH, based on the trees size, vigor and construction tolerances (ANSI A300 Part 5 BMP, Matheny, Clark, 1998). The TPZ can usually safely be reduced by 20% as long as it does not impact the CRZ. Greater than 20% reductions may be possible, pending review, written permission, and direct over site of the work, by the Consulting Arborist. The trees to be saved, must be protected during construction by temporary 6’ tall chain-link, or like fencing, located 10’ beyond the edge of the trees farthest extending limbs on all sides (dripline). The individual tree protection zones (TPZ) are 10’ past the driplines of the tree(s), unless otherwise delineated by A.B.C. Consulting Arborist LLC. See Attachment 2 for tree specific TPZ and CRZ. No irrigation lines, trenches, or other utilities shall be installed within the TPZ, without detailed written instructions and the oversite of the Consulting Arborist, to reduce the impacts to the tree roots, and construction related stressors. Cuts or fills should impact no more than 20% of a tree’s root system. If topsoil is added to the root zone of a protected tree, the depth should not exceed 2 inches of a sandy loam or loamy fine sand topsoil and should not cover more than 20% of the root system . If roots are encountered outside the TPZ during construction, they shall be cut cleanly with a saw (not ripped or torn) and covered immediately with moist soil. Noxious vegetation within the critical root zone should be removed by hand. If a proposed save tree must be impacting by grading or fills, then the tree should be re-evaluated by A.B.C. Consulting Arborist LLC to determine if the tree can be saved with mitigating measures, or if the tree should be removed. See Attachment 4 for complete tree protection instructions. CRITICAL ROOT ZONES (CRZ) The CRZ is the area where the roots vital for the trees survival are located, the CRZ is generally ½ of the TPZ. At no time or for any reason shall the roots within the CRZ be impacted. See Attachment 2 for tree specific TPZ and CRZ. FENCING 6’ tall chain link (or like fencing) shall be installed the TPZs prior to commencement of site clearing and shall remain in place for the duration of the project. When possible, it is preferred that trees be fenced as a group, rather than individuals. At no time shall any vehicle or equipment be allowed inside TPZ/Fencing. No placing or stock-piling of any material of any kind shall be allowed inside the TPZ/Fencing. Removal of any vegetation within the TPZ shall be done by hand. Should any disturbance be required inside the TPZ to install utilities or any other needs during the construction period, they will require project specific instructions by the Consulting Arborist and approval by the city prior to undertaking any said activity in the TPZ. Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 6 of 26 ROOT PROTECTION Any roots encountered of 1” in diameter or greater, shall be cut with loppers, pruners, reciprocal saw or like device to provide a clean smooth cut. At no time, shall 1” or greater diameter roots be ripped or torn. Exposed roots shall be covered with wet burlap, or like item, to keep roots from drying out and shall be covered with soil as soon as reasonably possible. Protect tree root systems from damage due to noxious materials caused by runoff or spillage while mixing, placing, or storing construction materials. Protect root systems from flooding, eroding, or excessive wetting caused by dewatering operations. Protect root systems from damage due to removal of adjacent trees. SEE ATTACHMENT 4 For Complete Tree Protection Instructions. CERTIFICATION I, Daniel Maple, Certify to the best of my knowledge and belief: 1. That the statements of fact contained in this report are true and correct. 2. That the analysis, opinions, and conclusions are limited only by the reported assumptions and limiting conditions, and that they are my personal, unbiased professional analysis, opinions, and conclusions. 3. That I have no present or perspective interest in the property or plants that is the subject of this report, and that I had no personal interest or bias with respect to the parties involved. 4. That my compensation is not contingent upon a predetermined value or direction and that favors the cause of the client, the amount of the value estimate, the attainment of a stipulated results, or the occurrence of any subsequent event. 5. That my analysis, opinions, and conclusions were developed, and this report has been prepared, and conforms to current ANSI A300 Best Management Practices and Industry Standards. 6. The report is based on the information known to me at the time of my assessment. If more information is disclosed, I may have further opinions. 7. The report is based on my analysis time of the assessment, and covers that time frame only, any additional limitations are addressed in the body of the report and/or in the attachments. 8. That all the statements of fact in the report are true, complete, and correct to the best of my knowledge and belief, and that they are made in good faith. Thank you for contacting A.B.C. Consulting Arborists LLC for your arboricultural needs. Sincerely, Daniel Maple, Consulting Arborist Registered Consulting Arborist #627 ISA Municipal Specialist #PN-7970AM ISA Tree Risk Assessment Qualified (TRAQ) ISA Board Certified Master Arborist #PN-7970BM Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 7 of 26 ATTACHMENTS ATTACHMENT 1 - TREE PLOTTER IMAGE ................................................................................... 8 ATTACHMENT 2 - TREE SUMMARY, TPZ, CRZ .......................................................................... 15 ATTACHMENT 3 - TREE RETENTION WORK SHEET ............................................................... 17 ATTACHMENT 4 - TREE PROTECTION ........................................................................................ 18 ATTACHMENT 5 - ROOT ZONE ENHANCEMENT ...................................................................... 21 ATTACHMENT 6 - MULCHING ........................................................................................................ 22 ATTACHMENT 7 - LIMITATIONS.................................................................................................... 24 ATTACHMENT 8 - GLOSSARY ......................................................................................................... 25 ATTACHMENT 9 - REFERENCES .................................................................................................... 26 Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 8 of 26 ATTACHMENT 1 - TREE PLOTTER IMAGE North Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 9 of 26 King County iMap North Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 10 of 26 Critical Area North Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 11 of 26 Trees Outside of Critical Area Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 12 of 26 Trees to be Removed for Improvements Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 13 of 26 Trees to be Retained and TPZ Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 14 of 26 Trees to be Retained and CRZ Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 15 of 26 ATTACHMENT 2 - TREE SUMMARY, TPZ, CRZ ID Common Name Latin Name DBH Height Spread Condition Management TPZ-Radius [ft] CRZ-Radius [ft] 1 Apple species Malus species 9 15 15 Fair (70+) Remove for Construction 9 4.5 2 Apple species Malus species 10 15 19 Fair (70+) Remove for Construction 10 5 3 Western red cedar Thuja plicata 19.56 40 28 Good (80+) Retain-Viable 19.56 9.78 4 Douglas fir Pseudotsuga menziesii 35 98 38 Good (80+) Retain-Viable 35 17.5 5 Willow Salix species 15.39 25 28 Fair (70+) Remove for Construction 15.39 7.695 6 Western red cedar Thuja plicata 49.52 80 50 Fair (70+) Remove for Construction 49.52 24.76 7 Big leaf maple Acer macrophyllum 14.5 40 19 Good (80+) Retain-Viable 14.5 7.25 8 Big leaf maple Acer macrophyllum 13 40 19 Good (80+) Retain-Viable 13 6.5 9 Plum Prunus species 15.91 17 24 Good (80+) Retain-Viable 19.8875 9.94375 10 Douglas fir Pseudotsuga menziesii 20 80 20 Fair (70+) Retain-Viable 20 10 11 Western red cedar Thuja plicata 20 60 35 Fair (70+) Retain-Viable 20 10 12 Black locust Robinia pseudoacacia 13 80 15 Fair (70+) Retain-Viable 16.25 8.125 13 Black locust Robinia pseudoacacia 12 65 20 Fair (70+) Retain-Viable 15 7.5 14 Black locust Robinia pseudoacacia 18 80 25 Fair (70+) Retain-Viable 22.5 11.25 15 Black locust Robinia pseudoacacia 13 68 22 Fair (70+) Retain-Viable 16.25 8.125 16 Black locust Robinia pseudoacacia 13 68 19 Fair (70+) Retain-Viable 16.25 6.5 17 Black locust Robinia pseudoacacia 17 70 20 Fair (70+) Retain-Viable 21.25 10.625 18 Black locust Robinia pseudoacacia 13 68 19 Fair (70+) Retain-Viable 16.25 6.5 19 Black locust Robinia pseudoacacia 13 60 20 Fair (70+) Retain-Viable 16.25 8.125 20 Black locust Robinia pseudoacacia 23 69 25 Very Poor (25+) Retain-Poor Condition No Target 28.75 14.375 21 Big leaf maple Acer macrophyllum 15 50 35 Good (80+) Retain-Viable 15 7.5 22 Big leaf maple Acer macrophyllum 24 68 39 Excellent (90+) Retain-Viable 24 12 23 Black locust Robinia pseudoacacia 18 80 25 Fair (70+) Retain-Viable 22.5 11.25 24 Black locust Robinia pseudoacacia 16 45 12 Very Poor (25+) Retain-Poor Condition No Target 20 10 25 Black locust Robinia pseudoacacia 21 75 35 Fair (70+) Retain-Viable 26.25 13.125 26 Black locust Robinia pseudoacacia 22 80 35 Fair (70+) Retain-Viable 27.5 13.75 27 Big leaf maple Acer macrophyllum 12 58 14 Good (80+) Retain-Viable 12 6 28 Black locust Robinia pseudoacacia 24 90 35 Fair (70+) Retain-Viable 30 15 29 Black locust Robinia pseudoacacia 12 70 20 Poor (50+) Retain-Poor Condition No Target 15 7.5 30 Red alder Alnus rubra 16 35 14 Very Poor (25+) Retain-Poor Condition No Target 20 10 31 Big leaf maple Acer macrophyllum 12 70 20 Poor (50+) Retain-Poor Condition No Target 12 6 32 Big leaf maple Acer macrophyllum 22 68 31 Good (80+) Retain-Viable 22 11 33 Black locust Robinia pseudoacacia 16 85 22 Fair (70+) Retain-Viable 20 10 Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 16 of 26 34 Black locust Robinia pseudoacacia 21.5 85 29 Fair (70+) Retain-Viable 26.875 13.4375 35 Black locust Robinia pseudoacacia 25 85 35 Fair (70+) Retain-Viable 31.25 15.625 36 Black locust Robinia pseudoacacia 15 48 19 Fair (70+) Retain-Viable 18.75 9.375 Red = Trees in Critical Area Green = Trees to Retain Yellow = Trees to be Removed The Dripline TPZ is shown as default TPZ. The Actual TPZ listed shall be the TPZ that is used. The TPZ can be reduced to the CRZ, unless noted otherwise, as long as the TPZ is not reduced by more than 20%. This may be further reduced on a case by case basis, upon review, approval, and under the direct over site of A.B.C. Consulting Arborists LLC. Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 17 of 26 ATTACHMENT 3 - TREE RETENTION WORK SHEET TREE RETENTION WORKSHEET Planning Division 1055 South Grady Way-Renton, WA 98057 Phone: 425-430-7200 | www.rentonwa.gov 1. Total number of trees over 6” diameter1, or alder or cottonwood trees at least 8” in diameter on project site 36 trees 2. Deductions: Certain trees are excluded from the retention calculation: Trees that are dangerous2 0 trees Trees in proposed public streets 0 trees Trees in proposed private access easements/tracts 0 trees Trees in critical areas3 and buffers 14 trees Total number of excluded trees: 14 trees 3. Subtract line 2 from line 1: 22 trees 4. Next, to determine the number of trees that must be retained4, multiply line 3 by: 0.3 in zones RC, R-1, R-4, R-6 or R-8 22 X 0.3 = 6.6 or 7 trees 0.2 in all other residential zones 0.1 in all commercial and industrial zones 7 trees 5. List the number of 6” in diameter, or alder or cottonwood trees over 8” in diameter that you are proposing5 to retain4: 18 trees 6. Subtract line 5 from line 4 for trees to be replaced: (if line 6 is zero or less, stop here. No replacement trees are required) -11 trees 7. Multiply line 6 by 12” for number of required replacement inches: 0 inches 8. Proposed size of trees to meet additional planting requirement: (Minimum 2” caliper trees required) 0 inches per tree 9. Divide line 7 by line 8 for number of replacement trees 6: (If remainder is .5 or greater, round up to the next whole number) 0 trees 1 Measured at 4.5’ above grade. 2 A tree certified, in a written report, as dead, terminally diseased, damaged, or otherwise dangerous to persons or property by a licensed landscape architect, or certified arborist, and approved by the City. 3 Critical areas, such as wetlands, streams, floodplains and protected slopes, are defined in RMC 4-3-050. 4 Count only those trees to be retained outside of critical areas and buffers. 5 The City may require modification of the tree retention plan to ensure retention of the maximum number of trees per RMC 4- 4-130H7a. 6 When the required number of protected trees cannot be retained, replacement trees, with at least a two-inch (2") caliper or an evergreen at least six feet (6') tall, shall be planted. See RMC 4-4-130.H.1.e.(ii) for prohibited types of replacement trees. Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 18 of 26 ATTACHMENT 4 - TREE PROTECTION The following minimum Tree Protection Measures can be copied and introduced into all relevant documents such as site plans, permit applications and conditions of approval, and bid documents so that everyone involved is aware of the requirements. 1. Tree Protection Fencing: a. Tree Protection Fences will need to be placed around each tree or group of trees to be retained. i. Tree Protection Fences are to be placed according to the attached drawing (bottom of attachment) at a distance of not less than 10’ feet outside the dripline of the tree or group of trees to be saved, or at the designated TPZ See Attachment 2 for TPZ/CRZ ii. Tree Protection Fences must be inspected prior to the beginning of any demolition or construction work activities. iii. Nothing must be parked or stored within the Tree Protection Fences—no equipment, vehicles, soil, debris, or construction supplies of any sorts. b. Signs: i. The Tree Protection Fences need to be clearly marked with the following or similar text in four inch or larger letters every 20’ TREE PROTECTION FENCE, DO NOT ENTER! DO NOT PARK OR STORE MATERIALS WITHIN THE PROTECTION AREA Questions contact Daniel Maple of A.B.C. Consulting Arborists LLC. Cell: (509) 953-0293 Email: Daniel@AbcArborist.Com Signs along the TPZ may be waived at the discretion of the City and/or its officials. 2. Cement Trucks/Washout: a. Cement trucks must not be allowed to deposit waste or wash out materials from their trucks within the Tree Protection Fences. b. No waste, wash out, or contaminated water shall be allowed to flow into the Tree Protection Area. 3. Canopy Pruning: a. The canopies of some of the trees may need to be properly pruned to allow Sight lines (vehicular), access of equipment, materials, or building and construction clearance. b. If so, the pruning must be done by an International Society of Arboriculture, (ISA) Certified Arborist using current industry standard pruning techniques. (ANSI A300 Pruning Standards and ANSI Z131.1 Safety Standards as well as all OSHA, WISHA, and local standards must be followed.) c. Plant debris can be chipped and utilized on site for the mulch under the trees. Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 19 of 26 5. When excavation occurs near trees that are scheduled for retention, the following procedure must be followed to protect the long-term survivability of the tree: a. An International Society of Arboriculture, (ISA) Certified Arborist must be working with all equipment operators. i. The Certified Arborist should be outfitted with an Airspade™, shovel, hand pruners, a pair of loppers, a handsaw, and a power saw (a “saws all” type reciprocating saw is recommended). b. The hoe must be placed to “comb” the material directly away from the trunk as opposed to cutting across the roots. i. Combing is the gradual excavation of the ground cover plants and soil in depths that only extend as deep as the tines of the hoe. c. When any roots of one-inch diameter or greater, of the tree to be retained, is struck by the equipment, the Certified Arborist should stop the equipment operator. d. The Certified Arborist should then excavate around the tree root by Airspade™ (recommended) or by hand/shovel and cleanly cut the tree root. i. The Certified Arborist should then instruct the equipment operator to continue. 6. Putting Utilities Under the Root Zone: a. Boring under the root systems of trees (and other vegetation) shall be done under the supervision of an ISA Certified Arborist. This is to be accomplished by excavating a limited trench or pit on each side of the critical root zone of the tree and then hand digging or pushing the pipe through the soil under the tree. The closest pit walls shall be a minimum of 7 feet from the center of the tree and shall be sufficient depth to lay the pipe at the grade as shown on the plan and profile. b. Tunneling under the roots of trees shall be done under the supervision of an ISA Certified Arborist in an open trench by carefully excavating and hand digging around areas where large roots are exposed. No roots 1 inch in diameter or larger shall be cut. c. The contractor shall verify the vertical and horizontal location of existing utilities to avoid conflicts and maintain minimum clearances; adjustment shall be made to the grade of the new utility as required. 7. Watering: The trees will require significant watering throughout the summer and early fall in order to survive long- term. An easy and economical watering can be done using soaker hoses placed three feet from the trunk of the tree and spiraled around the tree. One 75-foot soaker hose per tree is adequate. It is best to place the soakers using landscape staples, (available from HD Fowler in Bellevue for pennies apiece) then cover the area with three to six inches of mulch. The mulch will minimize evaporation and will also stimulate the microbial activity of the soil which is another benefit to the health of the tree. a. Water the tree to a depth of 18 to 20 inches. I recommended leaving the water on the soaker hoses for six to eight hours and then digging down to determine how deep your water is penetrating. Then adjust accordingly. It may take a good two days of watering to reach the proper depth. b. Once the water reaches the proper depth, turn off the hoses for four weeks and then water again. Water more often when temperatures increase— every three weeks when temperatures exceed 80 degrees and every two weeks when temperatures exceed 90 degrees. This drying out of the soil in between watering is important to prevent soil pathogens from attacking the trees. Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 20 of 26 Existing Significant Tree Continuous 6’ min. chain link or like fencing. Fence post @ 10’ Max O.C. Install as shown on plans 5’ min past Dripline, or per specific TPZ/CRZ instructions. Signs installed every 20’ TREE PROTECTION FENCE, DO NOT ENTER! DO NOT PARK OR STORE MATERIALS WITHIN THE PROTECTION AREA Include Arborist Contact Info. Six-foot high temporary chain link (or like material) fencing shall be installed as shown on plans. Fencing shall be installed prior to construction activity and remain in place until construction is completed. Fencing panels are recommended. Fencing shall completely encircle the tree(s). Install fence posts using pier blocks. Avoid driving posts or stakes into major roots. Make a clean straight cut, using loppers, reciprocal saw, or like tool, to remove damaged portion of root(s) over 1” inch diameter that are damaged during construction. ALL exposed roots shall be temporarily covered with damp burlap and covered with soil the same day, if possible, to prevent drying out. If not possible, the burlap must be kept moist at all times. Work within the protection fencing shall be done manually. No stockpiling of materials, soil, debris, vehicular traffic, or storage of machinery or equipment shall be allowed within the limits of the fencing. Cement trucks must not be allowed to deposit waste or wash out materials from their trucks within the tree protection fences, or in a manner that would allow the waste or wash out material to enter the TPZ. The area within the tree protection fencing she’d be covered with wood chips, hog fuel, or similar materials, to a depth of 3 to 6 inches. The materials should be placed prior to beginning construction and remain until the tree protection fencing was taken down. Should the tree protection fencing need to be installed inside the TPZ to allow for construction activity, then the following shall be done. For construction equipment, cover the area from the tree protection fencing to the outer edge of the TPZ with 8 to 10 inches of wood chips, hog fuel, or similar materials, to reduce compaction cover area with steel plates. For foot traffic’ cover the area from the tree protection fencing to the outer edge of the TPZ with 6 inches of wood chips, hog fuel, or similar materials, to reduce compaction, cover with ¾ inch to 1-inch plywood. The steel plates, plywood and wood chips are to remain in place until all construction activity is completed. The steel plates, plywood and woodchips shall then be removed and the tree protection fencing installed along the outer edge of the tree protection zone. Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 21 of 26 ATTACHMENT 5 - ROOT ZONE ENHANCEMENT Construction and site development create large stresses on trees. Changes in soil temperature, soil moisture regimes, wind exposure, and/or exhaust fumes all create a harsh environment for tree survival. Some of the ways to combat these stresses, along with the Tree Protection Measures outlined above is to: 1) Reduce competition for needed nutrients and water by removing the vegetation under the dripline of a tree. The use of an Airspade® will make this job easier, protect the roots, reduce soil compaction and aerate the soil. 2) The use of Cambistat™ (a growth regulator) has been shown to: reduce construction related stress, improve overall tree health and vigor. If applied 6-12 months prior to construction, it increases fine root growth, reduces construction related stressors, and may allow the TPZ to be reduced. 3) The use of Verdur® has shown to reduce chlorotic conditions in trees that are iron deficient. Chlorosis can be caused by several factors which include but are not limited to: A) PH levels not appropriate for the species. B) Severe soil compaction. C) Over- irrigating. D) Herbicides. Root severing. E) De-icing salts. F) Root disease. G) Repeated drought. 4) When trees are showing signs of chlorosis, the use of Verdur® and Cambistat™ together has proven to give the best results in tree health. This will usually give 3 years of improvement. The trees should have recovered from their stressors by this time. 5) Applying a layer of Eco compost, or like compost, over the exposed roots under the dripline of the tree will increase nutrients, beneficial micro-organisms, and overall soil structure in this zone. 6) The use of a woody mulch under the dripline of a tree has been proven to increase water availability, increase microbial activity, and improve soil structure. At the same time, it reduces mechanical injury to the tree will occur from maintance workers and their equipment. (mowers, edger’s, weed cutters, etc.) 7) Mulch should be of a medium to course, woody, material, and should be 3”-4” deep (not to exceed 6”). The mulch should not contact the trunk of the tree but shall remain 6” from the trunk. Mulch that is to thick, or to close to the trunk can be harmful to the tree. 8) Apply a combination of tree-based fertilizer and Mycorrhizal Fungi into the root systems of the trees to be retained. Mycorrhizal Fungi are a group of beneficial fungi that form symbiotic relationships with the roots of trees and shrubs. Trees with this fungal association grow more roots and take up more water and nutrients than those without. 9) Trees have different chemical needs than turf or shrubs. A fertilizer formulated specifically to promote healthy growth without causing irregular growth is important to stimulate healthy regrowth after construction (DIEHARD™ Products are Recommended) Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 22 of 26 ATTACHMENT 6 - MULCHING Mulching is one of the easiest and most effective ways to improve urban soil quality entry health. Mulching is the application materials to the soil surface to improve or protect the tree and/or soil. Most materials can be organic or inorganic. When selecting mulch, organic materials are usually preferred over inorganic materials. Organic mulches moderate soil temperatures, reduce soil compaction and erosion, and increase soil organic matter; thereby stimulating microbial activity, soil aggregation, and nutrient availability. Inorganic mulches may be fire resistant, do not decompose, reflect, or transfer heat more readily into the soil, and tend to be more stable when exposed to high wind or flooding. Table 2) Potential uses and limitations of typical mulches for urban trees. *Arborist woodchips are less costly and hold up better, they are the preferred mulch, in moderate to high traffic areas. Mulch Uses Limitations Prevent compaction Prevent erosion Limit evaporation Deter past Control weeds Promote aggregation Increase organic matter Increase nutrients Expensive or limited availability Crusting or matting Unstable Anaerobic soils Salts or contaminants Potential N immobilization Temporary or unknown effects Grass clippings X X X X X X X Fresh leaves X X X X X X Needles X X X X X Hay/straw X X X X X X *Arborist woodchips X X X X X X X X Bark X X X X X X X X X Eucalyptus X X X X X X X Cypress X X X X X X X Pecan shells X X X X X X Leaf mold X X X X X X Compost X X X X X X Fabrics X X X X Recycled rubber X X X X X X Stone/gravel X X X X Black plastic X X X X X Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 23 of 26 Mulching guidelines for urban landscapes 1. Depth of mulch application is dependent upon mulch texture, density, material decomposition rate, and climate. Wooden chip mulch should be applied and maintained at depths of 3-6 inches for trees. Materials that are finer, denser, and slower to decompose should be applied at lesser depths. thicker mulch layers should be applied in arid regions to retain more water in the soil. 2. Apply a sufficiently thick layer of mulch, usually 2-4 inches, to kill existing weeds and prevent new weed seeds from germinating or reaching the soil surface. If thinner layers are applied, kill or remove weeds prior to installing mulch. 3. Do not place impervious plastic sheeting or fabric barriers under mulch. Impervious barriers stop water movement and limit incorporation of organic matter into the soil. 4. The mulch area should cover as much of the tree root zone as possible, from near the trunk to the dripline, is considered ideal. 5. For recent transplants, mulch beyond the root ball. The minimum recommended radius is 3 feet. Maintain mulch for at least three years to facilitate root growth and protect trees from mechanical damage. 6. For larger existing trees, the minimum radius for mulch is at least three times the trunk diameter. 7. Mulch applied as a continuous bed around multiple trees is more effective than single rings around individual trees. 8. Average chip size of most organic mulches should be 1-2 inch. 9. Avoid woodchips from trees that are known to have allelopathic affects (e.g., Juglans nigra) and from individual trees that may have soil transmittable diseases (e.g., Verticillium wilt). On wet sites, soil drying can be promoted by removing organic mulches. Be aware of some other potential negative impacts of mulches, including toxicity (allelopathy and “sour” anaerobic mulches with pH of <2.5), slime molds (unsightly, but mostly harmless), matting (hydrophobic layers from fungal mats and mulches), flammability, and some fungus problems (e.g., Sphaerobolus, Mutinuscaninu, and M. elegans). Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 24 of 26 ATTACHMENT 7 - LIMITATIONS Assumptions & Limiting Conditions 1. A field examination of the site was made for this report (date referenced in report.) Care has been taken to obtain all information from reliable sources in a timely fashion. Therefor all data has been verified to the best of my knowledge, the certified/consulting arborist can neither guarantee or be held responsible for the accuracy of information provided by any outside sources. 2. All information provided in this report covers only the tree’s that were examined and reflects the condition of those tree(s) at the time of inspection. This inspection is limited to a visual method of the trees in question, excluding any core sampling, probing, dissection, aerial inspection, or excavation unless noted in writing and contingent upon the appropriate fee being authorized in writing. There is no guarantee nor warranty, expressed or implied that any deficiencies or problems of the mentioned trees may not arise in the future. 3. All drawings, sketches, and photographs submitted with this report, are intended as visual aids only, and are not exact to scale. They should not be construed as engineering or architectural report of surveys unless noted and specified. 4. The certified arborist/consulting arborist is not required to give any testimony or to attend court for any reason considering this report unless subsequent contractual agreements are made. 5. Any alterations made to this report or loss automatically invalidates this report. 6.This document is protected by copy right laws©. Unless required by law otherwise, possession of this report or a copy of this report does not imply right of publication or use for any purpose by anyone other than the person for whom it was created for, without prior expressed written permission and verbal consent of the consulting arborist. 7. The report and values/opinions expressed, represent the opinion of the certified/consulting arborist, and the arborist fees are in no way contingent upon reporting any specified values, stipulated results, the occurrence of a subsequent event, nor upon finding to be reported. Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 25 of 26 ATTACHMENT 8 - GLOSSARY Air excavation device, Air-Spade: Device that directs a jet of highly compressed air to excavate soil. Used within the root zone of trees to avoid or minimize damage to tree roots or near underground structures such as pipes and wires. May also reduce hazards associated with excavation near pipes or wires. Alternate: Pertaining to bud or leaf arrangement, one leaf or bud at each node, situated at alternating positions along the stem. In this arrangement, the leaves are not directly across from each other Drip line: Imaginary line defined by the branch spread (farthest extending limb in all directions) of a single plant or group of plants. Defoliation: Loss of leaves from a tree or other plant by biological or mechanical means. Foliage: The live leaves or needles of the tree; the plant part primarily responsible for photosynthesis. Hypsometer: A device that measures vertical angles, and provides direct height measurements of objects by triangulation. Included-bark: Bark that becomes embedded in a crotch (union) between branch and trunk or between codominant stems. Causes a weak structure. Mulch: Any material such as wood chips, straw, sawdust, leaves, and stone that is spread on the surface of the soil to protect the soil and plant roots from the effects of raindrops, soil crusting, freezing, and evaporation. Opposite: Pertaining to leaf or branch arrangement, leaves or branches situated two at each node, across from each other on the stem. PH: Unit of measure that describes the alkalinity or acidity of a solution. Negative log of the hydrogen ion concentration. Measured on a scale from 0 to 14. Greater than 7 is alkaline, less than 7 is acid, and 7 is neutral (pure water). Resistograph®: Brand name of a device consisting of a specialized micro drill bit that drills into trees and graphs density differences that are used to detect decay. Soil compaction: Compression of the soil, often because of vehicle or heavy-equipment traffic, that breaks down soil aggregates and reduces soil volume and total pore space, especially macro-pore space. Soil probe: Any one of many instruments used to take soil cores or samples. Usually some variation of a metal tube with a sharpened or serrated point and a T-shaped handle Target: Any person or object within reach of a falling tree or part of a tree, that may be injured or damaged. Tree protection zone (TPZ): Defined area within which certain activities are prohibited or restricted to prevent or minimize potential injury to designated trees, especially during construction or development. Tree growth regulator (TGR): Chemical that can be applied to trees that slows terminal growth by reducing cell elongation. Vigor: Overall health; the capacity to grow and resist physiological stress Visual tree assessment (VTA): Method of assessing the structural integrity of trees using external symptoms of mechanical stress (such as bulges, reactive growth, etc) and defects (cracks, cavities, etc). Nielsen Short-Plat Tree Protection Plan. By, A.B.C. Consulting Arborists LLC February 28, 2019 Page 26 of 26 ATTACHMENT 9 - REFERENCES 1. Dirr, Michael A. Manual of Woody Landscape Plants, Their Identification, Ornamental Characteristics, Culture, Propagation, and Uses. Champaign: Stipes Publishing Company, 1990. 2. Dunster, Dr. Julian A., R.P.F., M.C.I.P. Documenting Evidence, Practical Guidance for Arborists, First Choice Books, Victoria, BC, Canada. 2014. 3. Harris, Richard W, James Clark, and Nelda Matheny. Arboriculture, Integrated Management of Landscape Trees, Shrubs, and Vines. 4th ed. Upper Saddle River: Prentice Hall, 2004. 4. Johnson, Warren T. and Lyon, Howard H. Insects That Feed on Trees and Shrubs. Ithaca: Comstock Publishing Associates, 1991. 5. Matheny, Nelda P. and Clark, James R. Evaluation of Hazard Trees. 2nd ed. Savoy: The International Society of Arboriculture Press, 1994. 6. Matheny, Nelda P. and Clark, James R. Trees & Development, A Technical Guide to Preservation of Trees During Land Development. Savoy: The International Society of Arboriculture Press, 1998. 7. Mattheck, Claus and Breloer, Helge. The Body Language of Trees, A Handbook for Failure Analysis. London: HMSO, 1994. 8. Pacific Northwest Chapter-ISA. Tree Risk Assessment in Urban Areas and the Urban/Rural Interface. Course Manual. Release 1.5. PNW-ISA: Silverton, Oregon, 2011. 9. Scharpf, Robert F. Diseases of Pacific Coast Conifers. Albany, California: USDA Forest Service, Agriculture Handbook 521, rev. June 1993. 10. Smiley, E. Thomas, Watson, Gary, and Larry Costello, Root Management, ANSI A300 Part 8: Tree, Shrub, and Other Woody Plant Management—Standard Practices (Root Management). The International Society of Arboriculture Press. Champaign. IL. 2012. 11. Smiley, E. Thomas, Nelda Matheny, and Sharon Lilly, Managing Trees During Construction, ANSI A300 Part 5: Tree, Shrub, and Other Woody Plant Management— Standard Practices (Management of Trees and Shrubs During Site Planning, Site Development, And Construction). The International Society of Arboriculture Press. Champaign. IL. 2012. 12. Watson, Gary W., and Neely, Dan, eds. Trees & Building Sites. Savoy: The International Society of Arboriculture Press, 1995.