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Report Fr7 p5Wz JUN 0 9 2020 SW 72"d Ave. and SW Baylor St., Tigard r 6/8/2020 • Arborist Report for Tree 1 and Tree 2 I visited the development site at SW 72"d and SW Baylor St. in the afternoon of June 5, 2020 to evaluate Tree 1 and Tree 2 and make recommendations base on the development plan. Tree 1 and Tree 2 are offsite.Tree 1 grows at the property line and Tree 2 is less than 2 ft. from the property line. Based on my evaluation of the trees and after reviewing the site plan, I recommend that Tree 1 be removed, and Tree 2 be preserved. Tree 1 Tree 1 is a 10-inch DBH Incense Cedar(Calocedrus decurrens) and it is a young, healthy tree.There will be significant excavation for the installation of an electrical transformer 4 ft. or less from Tree 1. This is well within the critical root zone of Tree 1. My main concern is that Tree 1 will become destabilized during excavation because installation of the transformer will require digging more than 3 ft. deep and the over-dig will likely approach the property line. I recommend that Tree 1 be removed and replaced with a native evergreen species. A Douglas fir or western redcedar would be a good species choice for the area. Tree 2 Tree 2 is an 8-inch DBH ponderosa pine (Pinus ponderosa) and it is a young, healthy tree.There will be a parking lot constructed 8 ft. south of Tree 2 and an over-dig of 2 ft. is expected. Tree 2 has a root protection zone (RPZ) of 6 ft. After evaluating Tree 2 and the extent of its root cover I find this to be an adequate amount of protection for the tree.There is an existing gravel drive south of the tree where the soil is compacted, and the root zone of Tree 2 is limited where the parking lot will be constructed. I recommend that the tree protection fence (TPF) be installed at a 6-foot radius from Tree 2 in a semi- circle that terminates at the property line. Arborist supervision will not be needed during excavation when excavation remains outside of the 6-foot RPZ. To mitigate for the stress of construction, I recommend that the onsite root zone between Tree 2 and the finished parking lot be mulched with woodchips, bark dust, or similar organic material.Tree 2 is a young, healthy, native conifer with good vigor and has the potential to become a significant tree in the future. Conclusion Due to the proximity of the new utility installation to Tree 1, Tree 1 should be removed.Tree 2 can be preserved during parking lot construction without arborist oversight and is a promising young, native tree. Construction stress near Tree 2 will be mitigated by mulching. I recommend that Tree 1 be replaced with a native evergreen species like a Douglas fir or western redcedar. Portland Tree Consulting SW 72nd Ave. and SW Baylor St.,Tigard 6/8/2020 • 8 3 d t� a P \ x ," aL a Y ..4 ; y .y . S • yy� ,,, ' 1 � x: � i� ,..71 '�` 4 a'tt •� tip'!, i fit.` \ \ A A i. r '-',,,4".--. � Tree 1 is o 10-inch DBH Incense cedar.It will have deep excavation within 4 ft.of its base for the installation of an underground transformer. free 2 is an 8-inch Ponderosa pine.It is adapted to soil compaction and a limited root zone to the south where the new parking lot will be constructed. Portland Tree Consulting SW 72"d Ave. and SW Baylor St.,Tigard 6/8/2020 Portland Tree Consulting PO Box 19042 Portland, OR 97280 503.421.3883 info@pdxtreeconsulting.com CCB 230301 1. Client warrants any legal description provided to the Consultant is correct and titles and ownerships to property are good and marketable. Consultant shall not be responsible for incorrect information provided by Client. 2. Consultant can neither guarantee nor be responsible for the accuracy of information provided by others. 3. The Consultant shall not be required to give testimony or attend court or hearings unless subsequent contractual arrangements are made,including additional fees. 4. The report and any values expressed therein represent the opinion of the Consultant,and the Consultant's fee is in no way contingent upon the reporting of a specified value,a stipulated result,the occurrence of a subsequent event,nor upon any finding to be reported. 5. Sketches,drawings and photographs in the report are intended as visual aids and may not be to scale.The reproduction of information generated by others will be for coordination and ease of reference. Inclusion of such information does not warrant the sufficiency or accuracy of the information by the Consultant. 6. Unless expressed otherwise,information in the report covers only items that were examined and reflects the condition at the time of inspection.The inspection is limited to visual examination of accessible items without laboratory analysis,dissection,excavation,probing,or coring,unless otherwise stated. 7. There is no warranty or guarantee,expressed or implied,that problems or deficiencies of the plants or property in question may not arise in the future. 8. The report is the completed work product.Any additional work,including production of a site plan, addenda and revisions,construction of tree protection measures,tree work,or inspection of tree protection measures,for example,must be contracted separately.Loss or alteration of any part of the report invalidates the entire report. 9. Any action or proceeding seeking to enforce any provision of this Agreement shall be brought against any of the parties in Multnomah County Circuit Court of the State of Oregon,or,when applicable, in the United States District Court for the District of Oregon.Each party consents to the jurisdiction of such courts(and of the appropriate appellate courts)and waives any objection to such venue. Ryan Neumann ISA Certified Arborist PN-5539A TRAQ Qualified Portland Tree Consulting �1 JUiN 9 9 20?0 MACDONALD /j1 �� c S� y3 } 1 ENVIRONMENTAL PLANNING. PC June 9th,2020 72nd and Baylor Tree Protection Standards According to Tigard's Urban Forestry Manual page 10-2 Tree protection fencing must be minimum 5-foot tall metal unless otherwise approved by the City Manager or designee.As illustrated in detail 3 /L0.1 Tree protection fence we are exceeding this standard by providing a 6'chain link fence around all of the trees we are preserving.Ti and T2 we hired an arborist to look at because of there close proximity to the new parking lot and new utilities.After closer evaluation of these two trees they determined that Tl would have to be removed and T2 could be saved with a 6-foot radius tree protection fence around the tree. • T3 is set for removal due to being an invasive tree in accordance with Section 7— Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 6 which states"The tree is listed in the nuisance tree list in UFM Appendix 6". • T4 is set for removal due to close proximity of proposed parking in accordance with Section 7—Development tree removal and replacement standards Part 1 Development Tree Removal Standards subsection 9 which states"Tree removal is required for the purposes of an approved building or land use permit" • T5 is set for removal due to being in the parking lot in accordance with Section 7— Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 9 which states "Tree removal is required for the purposes of an approved building or land use permit" • T6 is to be protected. It is a twin trunk Douglas fir. We are providing tree protection fence at the dripline of the tree and limited grading is happening inside the drip line but not within the critical root zone. After evaluation of the tree we feel that this work will not be detrimental to the health of the tree. If during excavation any roots greater than 3" are uncovered we will have the arborist preform root trimming and all work will be done by hand within the root protection zone. • T7 and T8 are set for removal due to being an invasive tree in accordance with Section 7— Development tree removal and replacement standards Part! Development Tree Removal Standards subsection 6 which states"The tree is listed in the nuisance tree list in UFM Appendix 6". • T9 is to be protected. It is a 9-inch caliper Douglas Fir. We are providing tree protection fence at the dripline of the tree and no grading or construction is taking place within the tree protection fencing. • T10 and Tl 1 are set for removal due to being an invasive tree in accordance with Section 7 —Development tree removal and replacement standards Partl Development Tree Removal 9020 SW Washington Square Road•Suite 410 Portland,OR 97223•Ph:503.224.1225 www.mep-pc.com Standards subsection 6 which states "The tree is listed in the nuisance tree list in UFM Appendix 6". • T12 is to be protected. It is a 12-inch caliper Douglas Fir. We are providing tree protection fence at the dripline of the tree and only a small dry stack retaining wall is being constructed on the outer edge of the dripline. All of this work will be done by hand and due to the young age of the tree and distance away from the trunk the tree should not be affected negatively by the construction. • T13 and T14 are set for removal due to being an invasive tree in accordance with Section 7 —Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 6 which states"The tree is listed in the nuisance tree list in UFM Appendix 6". • TI5 is to be protected. It is a 10-inch caliper Douglas Fir. We are providing tree protection fence at the dripline of the tree and only a small dry stack retaining wall is being constructed on the outer edge of the dripline. All of this work will be done by hand and due to the young age of the tree and distance away from the trunk the tree should not be affected negatively by the construction. • T16 and T17 are set for removal due to being an invasive tree in accordance with Section 7 —Development tree removal and replacement standards Part1 Development Tree Removal Standards subsection 6 which states"The tree is listed in the nuisance tree list in UFM Appendix 6". • T18 is to be protected. It is an 8-inch caliper Douglas Fir. We are providing tree protection fence at the dripline and no grading or construction is taking place within the dripline. • T19 is set for removal due to being an invasive tree in accordance with Section 7— Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 6 which states "The tree is listed in the nuisance tree list in UFM Appendix 6". • T20 is to be protected. It is a 12-inch caliper Douglas Fir. We are providing tree protection fence at the dripline and no grading or construction is taking place within the dripline. • T21, T22, T23, T24 and T25 are set for removal due to being an invasive tree in accordance with Section 7—Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 6 which states"The tree is listed in the nuisance tree list in UFM Appendix 6". • T26 is to be protected. It is a 12-inch caliper Douglas Fir. We are providing tree protection fence at the dripline and no grading or construction is taking place within the dripline. • T27 is to be protected. It is an 8-inch caliper Douglas Fir. We are providing tree protection fence at the dripline and no grading or construction is taking place within the dripline. 2 • T28 is to be protected. It is a 10-inch caliper Douglas Fir. We are providing tree protection fence at the dripline and no grading or construction is taking place within the dripline. • T29 is to be protected. It is an 18-inch Red Cedar. We are providing tree protection fence at the dripline of the tree and limited grading is happening inside the drip line but not within the critical root zone. After evaluation of the tree we feel that this work will not be detrimental to the health of the tree. If during excavation any roots greater than 3"are uncovered we will have the arborist preform root trimming and all work will be done by hand within the root protection zone. • T30 is two conifer trees with poor form that have grown together. Due to the grading taking place within the root zone it is set for removal in accordance with Section 7— Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 9 which states "Tree removal is required for the purposes of an approved building or land use permit" • T31, T32, T33, T34, T35 and T36 are all invasive trees located within the playground. They are all set for removal for being invasive trees in accordance with Section 7— Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 6 which states "The tree is listed in the nuisance tree list in UFM Appendix 6". • T37 is an 8-inch apple tree that is located inside the proposed building and is set for removal in accordance with Section 7—Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 9 which states"Tree removal is required for the purposes of an approved building or land use permit" • T38 is a 12-inch apple tree that is located inside the proposed building and is set for removal in accordance with Section 7—Development tree removal and replacement standards Part! Development Tree Removal Standards subsection 9 which states "Tree removal is required for the purposes of an approved building or land use permit" • T39 is a 31-inch Red Cedar tree that is located inside the proposed building and is set for removal in accordance with Section 7—Development tree removal and replacement standards Part] Development Tree Removal Standards subsection 9 which states "Tree removal is required for the purposes of an approved building or land use permit". We are mitigating this large evergreen tree by providing a Douglas fir in the parking lot in close proximity to where the tree is. • T40 is a 12-inch Holly tree that is located inside the proposed building and is set for removal in accordance with Section 7—Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 9 which states"Tree removal is required for the purposes of an approved building or land use permit" • T41 is an 18-inch plum tree that is located inside the proposed building and is set for removal in accordance with Section 7—Development tree removal and replacement 3 standards Partl Development Tree Removal Standards subsection 9 which states"Tree removal is required for the purposes of an approved building or land use permit" • T42 is a 12-inch apple tree that is located in the right of way and is set for removal due to the installation of a sidewalk in accordance with Section 7—Development tree removal and replacement standards Part! Development Tree Removal Standards subsection 8 which states "The tree location conflicts with areas of public street widening, construction, or extension as shown in the Transportation System Plan". • T43 is an 8-inch apple tree that is located in the right of way and is set for removal due to the installation of a sidewalk in accordance with Section 7—Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 8 which states"The tree location conflicts with areas of public street widening, construction, or extension as shown in the Transportation System Plan". • T44 is a 24-inch Rhododendron tree that is located in the right of way and is set for removal due to the installation of a sidewalk in accordance with Section 7—Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 8 which states "The tree location conflicts with areas of public street widening, construction, or extension as shown in the Transportation System Plan". • T45 is a 16-inch Douglas Fir tree that is located in the right of way and is set for removal due to the installation of a sidewalk in accordance with Section 7—Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 8 which states"The tree location conflicts with areas of public street widening, construction, or extension as shown in the Transportation System Plan". • T45 is a 16-inch Douglas Fir tree that is located in the right of way and is set for removal due to the installation of a sidewalk in accordance with Section 7—Development tree removal and replacement standards Partl Development Tree Removal Standards subsection 8 which states "The tree location conflicts with areas of public street widening, construction, or extension as shown in the Transportation System Plan". • T46 is an 18-inch Douglas Fir tree that is located in the right of way and is set for removal due to the installation of a sidewalk in accordance with Section 7—Development tree removal and replacement standards Part! Development Tree Removal Standards subsection 8 which states "The tree location conflicts with areas of public street widening, construction, or extension as shown in the Transportation System Plan". 4 Conclusion All non-invasive trees that could be feasibly saved have been saved using the tree protection standards laid out in the Urban Forestry Manual. Regards, 3gdY4 Skyler Flood Oregon Registered Landscape Architect#0988 s