The URL can be used to link to this page

20450 Stevens Creek - Arborist Report A Plus Tree Inc 985 Walnut Ave,Vallejo, CA 94592 www.aplustree.com Community Developmen -FFt ent Planning Division — o As PLUS tUPERTINO APPROVE Case# TR-2023-050 CROW YOUR FOREST IN THE CLOUD Application Number(s) Approval Body: Director/Staff Arborist Report for: Approva I Date 12/15/23 Signature Catherine TaroneCupertino City Center / Prometheus Commercial ca,,M50 Stevens Creek Boulevard, Cupertino, CA 95014 Prepared by Evan Fuller ISA Certified Arborist#WE-12508A,TRAQ Tree Risk Assessment Qualified evan@aplustree.com Assumptions & Limiting Conditions Arborists are tree specialists who use their education, knowledge, and experience to examine trees, recommend measures to enhance their health and beauty, and attempt to reduce the risk of living near trees. Clients may choose to accept or disregard the arborist's recommendations or to seek additional advice. Arborists cannot detect every condition that could possibly compromise the structure of a tree.Trees are living organisms that may fail in unpredictable or poorly understood ways. Conditions are often hidden internally or underground.Arborists cannot guarantee that a tree will be healthy or safe under all circumstances, or for a specific period of time. Treatment, pruning, and removal of trees may involve considerations beyond the scope of arborist services, such as property boundaries, property ownership, sight lines, neighbor or landlord-tenant disputes, etc.The person contracting the arborist accepts full responsibility for authorizing recommended treatments. Unless stated otherwise: 1) Information provided in this report applies only to trees that were inspected and reflects the condition of those trees at the time. 2) Inspection is limited to visual assessment from ground level and accessible areas; no excavation, sampling, or testing was performed. 3)There is no guarantee that tree problems or deficiencies will not arise in the future. Conditions change over time;to live near a tree is to accept some degree of risk. I hereby declare that the below statements and information are true to the best of my professional knowledge and belief. Signature: Date: June 16, 2023 ComMi�?Kvelopm��T rf%%Hrrn �� five (5) trees in and around the Macadam Ln parking lot of the Cupertino City Center commercial complex, managed by Prometheus Planning Division Comnpe rtilp.(, Plus Tree was contracted to perform emergency safety work CUPERTINO APPROVEPowing a March 2023 storm, and to provide recommendations for other trees. Case# TR-2023-05&r were removed during that emergency and need a retro-active permit; one Application Numb ftg been identified for future removal due to poor health. Approval Bo • Director/Sta{� s {�ery �i. Black Acacia,Acacia melanoxylon—16" DBH Approva I Date "PlT123 r 11Q - r..,..., ..,_- dead. Signature Catherine Tarone • Bark is sloughing off of the central leader and branches. Case Manager • Tree has been declining slowly since 2017, possibly due to Armillaria, Gandoderma, or Phellinus wood decay fungi. • Requires (2) 24" box replacement trees. 2. Black Acacia,Acacia melanoxylon—was 15" DBH • Removed as an emergency in 3/2023; needs retroactive permit • Tree had toppled into the parking lot. • Requires (2) 24" box replacement trees. 3. Black Acacia,Acacia melanoxylon—was approximately 14" DBH • Removed as an emergency in 3/2023; needs retroactive permit • Tree was actively uprooting. • Requires (2) 24" box replacement trees. 4. Black Acacia,Acacia melanoxylon—was approximately 10" DBH • Removed as an emergency in 3/2023; needs retroactive permit • Tree was actively uprooting. • Requires (1) 24" box replacement trees. 5. Callery Pear,Pyrus calleryana—was 15" DBH • Removed as an emergency in 3/2023; needs retroactive permit • Tree was identified as high-risk: leaned toward the lot, had a large cavity at the base, canopy appeared 50%dead. • Requires (2) 24" box replacement trees. Discussion Tree# 1 has been declining slowly since 2017. Most of the canopy has died back and been whittled away by crown-cleaning. Other trees in the lot have very old and dried Ganoderma or Phellinus conks on the trunks, so it is possible that this tree was also infected and has failed to tolerate or compartmentalize the rot. Trees# 2-5 were casualties of the spring 2023 storms.A Plus Tree crews were dispatched on March 14, 2023 to clear a fallen tree and address hazards posed by others. Most of the standing trees only had broken limbs, but those listed here were identified as imminent hazards that needed to be removed for safety. See pictures below.These trees require a retro-active permit and replacement. Recommendation A Plus Tree recommends removal of Tree#1, and replacement of Trees#2-5 as outlined below. Page 2 of 8 ComtuDevelopment Department Planning Division — Cupertino CUPERTINO APPROVED Case # ' Application Number`pp s ilk Approva I B Ctor/ of Approva I D Signature ��, ''- ` ;'' 1r • '�� g alter ,k I i r I i. ■ r r i � 7w A A MEMO Future Removal V Past Removal AA Replacement Tree Brisbane Box(Lophostemon confertus) is recommended for replanting within the lot. It is the same size and foliage type as the acacias being removed, grows quickly, has low water requirements, relatively low root damage potential, and is resistant to the wood decay fungi affecting the existing trees. It is not a California native, but is a more appropriate species to plant in this setting than available evergreen natives of this size; oaks would outgrow the space and cause root damage. 'Aristocrat' Callery Pear(Pyrus calleryana 'Aristocrat') is recommended for replacement along the norther edge of the lot. This is not a CA native, but would match the rest of the row planted there. A total of(9) 24" box replacement trees are required. Page 3 of 8 4.. ..gyp ... - z - 2U17 AJ Fel ._. ,� yy� 'chi ti I..rY •,�.�w1P -t, U.. � Fy 4 a� . y �k i p - a '' µ COMMUwill. ��^ - €� •'1P1 U. Approva I .Signature •i(ghd/ 1 �, MWSMWineTarone Case Manager ti :t Y r .� Tree#3—was uprooting 3/14/2023. Root plate was lifting away from the curb. �- - {._ ;� -__ •� - -- ram- � -+, fir` r � � - :� •, `. ,. . Page of 8 Co CUPERTINO -APPROVED Case# TR-2023-050 Application Number(s) Approval Body: Director/Staff Approva I D 12/15/23 - Signature Tarone � Manager 54 - � Z Jr k Y � Y r R t.. ♦��r a• A- �- f�- 15*n4i" F. `4 j * r f ti • •Y 4, Tree#4—was uprooting 3/14/2023. Root plate was lifting away from the curb. Page 7 of 8 Pjl r,• YI 1 B Signature �• � mil- �� "�� 1 'l l � � _ � :y 'wi'a • Tree#4—base of the tree was extensively rotted on the side leaning toward the parking lot. .,e +r .y ip.�4t r � Page 8 of