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HomeMy WebLinkAboutArborist Report for Benson Downs Arborist Report for Benson Downs Proposal ID #273807 11100 SE Petrovitsky Rd Renton, WA 98055 Prepared on March 29th, 2023 Prepared by: Jessy Linzy ISA CerNfied Arborist #WE-13500A jlinzy@aplustree.com Background Informa/on: This report was prepared on behalf of Tammy Murray, the property manager at Benson Downs Apartments, concerning one (1) Western Red Cedar, one (1) Himalayan Birch, and one (1) Paper Birch located at 11100 Petrovitsky Rd., Renton, WA. The King County parcel number for this property is 2923059015. The report was requested because the trees are either dead or in decline and the client needs to obtain a permit prior to removal. We have been asked to perform an assessment and provide recommendaNons. There is no proposed development associated with this project. The assessment was performed on February 1st, 2023 by Daniel Po^s, ISA CerNfied Arborist # WE-11534AT. Assignment (and any limi/ng factors): The assignment is to idenNfy the trees to be removed, to provide reason for removal, and to provide a removal and replacement plan in conjuncNon with city tree ordinance with the purpose to obtain permit for removal. Observa/ons: Tree # Species DBH (in) Notes 1 Western Red Cedar 13 Tree in decline, dying from top down. 2 Himalayan Birch 8.7 Crown dieback observed since 2021. Found to be dead in February 2023. 3 Paper Birch 6.8 Dead. Tes/ng & Analysis: There were no soil, tree, or other physical tesNng. Discussion: The Western Red Cedar is in decline, dying from the top down and will likely conNnue to decline. Limb failure is probable within two years. Target occupancy is low. The two birch trees are dead with no visible life le‘ in the canopy and no indicaNon of new growth. There is no clear indicaNon of why the trees have died. Recommenda/ons: RecommendaNon is removal and replanNng of replacement trees, if necessary, to be in accordance with Renton tree ordinance. LocaNons of the trees proposed for removal are in A^achment B below. Tree Inventory for Benson Downs Species DSH Range (In) QTY Tree Credits per Tree Total Tree Credits Propose to Health Himalayan Birch 6-12 1 4 4 Remove Dead Paper Birch 6-12 1 4 4 Remove Dead Western Red Cedar 12-18 1 6 6 Remove Poor Sweetgum 12-18 9 6 54 Retain Fair Sweetgum 6-12 3 4 12 Retain Fair Western Red Cedar 6-12 1 4 4 Retain Fair Alder 12-18 1 6 6 Retain Fair Alder 3-6 1 0 Retain Fair Alder 6-12 2 4 8 Retain Fair Big Leaf Maple 24-30 2 10 20 Retain Fair Big Leaf Maple 6-12 6 4 24 Retain Fair Cypress 12-18 1 6 6 Retain Fair Cypress 3-6 2 0 Retain Fair Cypress 6-12 1 4 4 Retain Fair Dead 6-12 1 4 4 Retain Fair Deodar Cedar 12-18 3 6 18 Retain Fair Deodar Cedar 6-12 12 4 48 Retain Fair Dogwood 0-3 1 0 Retain Fair Dogwood 3-6 9 0 Retain Fair Douglas Fir 24-30 1 10 10 Retain Fair Hemlock 6-12 2 4 8 Retain Fair Himalayan Birch 12-18 1 6 6 Retain Fair Himalayan Birch 6-12 12 4 48 Retain Fair Japanese Maple 0-3 1 0 Retain Fair Japanese Maple 3-6 3 0 Retain Fair Japanese Maple 6-12 1 4 4 Retain Fair Kousa Dogwood 3-6 1 0 Retain Fair Liquidambar Styraciflua 6-12 1 4 4 Retain Fair Lombardy Poplar 42+ 1 13 13 Retain Fair Maple 3-6 1 0 Retain Fair Maple 36-42 1 12 12 Retain Fair Maple 6-12 1 4 4 Retain Fair Noble Fir 3-6 1 0 Retain Fair Norway Maple 12-18 2 6 12 Retain Fair Norway Maple 3-6 2 0 Retain Fair Norway Maple 6-12 3 4 12 Retain Fair Paper Birch 12-18 1 6 6 Retain Fair Paper Birch 18-24 1 7 7 Retain Fair Paper Birch 6-12 3 4 12 Retain Fair Purple Leaf Plum 12-18 1 6 6 Retain Fair Purple Leaf Plum 6-12 4 4 16 Retain Fair Red Alder 12-18 3 6 18 Retain Fair Red Alder 3-6 1 0 Retain Fair Red Alder 6-12 3 4 12 Retain Fair Red Maple 30-36 1 11 11 Retain Fair Red Maple 6-12 4 4 16 Retain Fair Saucer Magnolia 3-6 1 0 Retain Fair Saucer Magnolia 6-12 1 4 4 Retain Fair Scotch Pine 3-6 1 0 Retain Fair Scotch Pine 6-12 2 4 8 Retain Fair Southern Magnolia 6-12 3 4 12 Retain Fair Spire Flowering Cherry 12-18 1 6 6 Retain Fair Spire Flowering Cherry 6-12 3 4 12 Retain Fair Stump 6-12 1 4 4 Retain Fair Sweetgum 12-18 28 6 168 Retain Fair Sweetgum 3-6 9 0 Retain Fair Sweetgum 6-12 55 4 220 Retain Fair Tulip Tree 12-18 7 6 42 Retain Fair Tulip Tree 6-12 7 4 28 Retain Fair Vine Maple 0-3 6 0 Retain Fair Vine Maple 3-6 20 0 Retain Fair Vine Maple 6-12 1 4 4 Retain Fair Western Cottonwood 12-18 1 6 6 Retain Fair Western Cottonwood 18-24 1 7 7 Retain Fair Western Cottonwood 30-36 1 11 11 Retain Fair Western Hemlock 12-18 1 6 6 Retain Fair Western Hemlock 3-6 2 0 Retain Fair Western Hemlock 6-12 4 4 16 Retain Fair Western Red Cedar 12-18 33 6 198 Retain Fair Western Red Cedar 18-24 4 7 28 Retain Fair Western Red Cedar 24-30 2 9 18 Retain Fair Western Red Cedar 3-6 2 0 Retain Fair Western Red Cedar 6-12 52 4 208 Retain Fair White Fir 6-12 1 4 4 Retain Fair Willow 24-30 1 9 9 Retain Fair Willow 3-6 2 0 Retain Fair Discussion on Tree Inventory and Recommenda/ons: Based on the current inventory in our records for Benson Downs Apartment, the total property tree credit value is 1,478 credits. The lot size of this parcel is 1,090,306 square feet or approximately 25.02 acres. Based on the Renton requirements of 30 tree credits per acre, the minimum number of credits required for this parcel is 750.6 credits. The three trees proposed for removal are worth a combined 14 credits. Removal of these three trees would sNll leave the property well above the minimum requirement. Arborist Disclaimer Arborists cannot detect every condition that could possibly lead to the structural failure of a tree. Trees are living organisms that may fail in ways we do not fully understand. Conditions are often hidden within trees and below ground. Arborists cannot guarantee that a tree will be healthy or safe, or fail for that matter, under all circumstances, or for a given period of time. Likewise, remedial treatments, like any medicine, cannot be guaranteed. Treatments, pruning and removal of trees may involve considerations beyond the scope of the arborist’s services such as property boundaries, property ownership, sight lines, disputes between neighbors, landlord-tenant matters, etc. Arborists cannot take such issues into account unless complete and accurate information is given to the arborist. The person hiring the arborist accepts full responsibility for authorizing the recommended treatment or remedial measures. Trees can be managed, but they cannot be controlled. To live near a tree is to accept some degree of risk. The only way to eliminate all risks is to eliminate all trees. This consultant does not verify the safety or health of any tree for any period of time. Construction activities are hazardous to trees and cause many short and long-term injuries, which can cause trees to die or topple. Even when every tree is inspected, inspection involves sampling; therefore, some areas of decay or weakness may be missed. Weather, winds and the magnitude and direction of storms are not predictable, and some failures may still occur despite the best application of high professional standards. I hereby declare that the above observations, discussion, and recommendation are true to the best of my knowledge, belief, and professional opinion. In addition, A Plus Tree is held harmless of any of these opinions from future tree failures. Sincerely, Jessy Linzy | A Plus Tree, LLC ISA CerNfied Arborist #WE-13500A A#achment A: Photo – A Taken 2/1/23. Showing full view of tree #1 . Photo – B Taken 2/1/23. Showing full view of tree #2. Photo – C Taken 2/1/23. Showing full view of tree #3. A#achment B Property site map with locaNons of proposed removals.