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Revised - De Anza Oaks - Oak Arborist Report Community Development Department Planning Division — C p A * PLUS CUPERTINO APPROVED Case# TR-2020-014 GROW YOUR FOREST IN THE CLOUD Application Number(s) Approval Body: Director/Staff Approval DateArb&lff/hoort for De Anza Oaks HOA/ Grayson Community Management Signature Lauren Ninkovich Prepared by Evan Fuller Case Manager ISA Certified Arborist#WE-12508A 3490 Buskirk Ave Pleasant Hill,CA 94523 (408)313-8447 Evan@aplustree.com Signature: Date: February 9 2021 Background This report is concerning one(1)tree located at 22938 Cricket Hill Road,Cupertino,CA Information 95014.The property is known as De Anza Oaks HOA, managed by Grayson Community Management. For the remainder of the report, De Anza Oaks will be referred to as the "client" property. Assignment(any One(1)tree on this property was evaluated and inspected for overall health and safety. limiting factors) 1. Quercus agrifolia(Coast Live Oak),24"DBH multistem Observations The oak is mature and confined to a slope between a dwelling and a parking area. Powerline run overhead and the tree has been trimmed for utility clearance in the past. Less than 20%of the canopy remains alive,and the foliage is chlorotic and sparse. Multiple stems originate very low on the trunk at the root collar,which is buried.There is deep included bark between the major stems,and some stems lean toward the dwelling with minor strike potential.Armillaria mushroom at the base of the tree. Please see photos in Attachment 1 for further observations Testing&Analysis No soil,tree tissue,or other physical testing was performed Discussion This tree has likely been under severe drought stress for years. It has been topped before for utility clearance,which can be harmful even to healthy trees.Armillaria mushrooms indicate active oak root rot,which is incurable and eventually fatal. It is not clear if Armillaria is the original cause of decline,or a secondary infection following drought stress.The deep included bark between stems,their union underground,and the slope at the site increase the likelihood of major trunk failure toward the dwelling. Recommendation As the tree is declining and cannot be recovered,A Plus Tree recommends removing the (1)oak in this report. Community Development Department 44 �h1D1Ivision — Cupertino CUPERTINO APPROVED Case# QuercusTiRFA r� 0-014 (Coast ftjl iMlon Number(s) 24" DBH multistem r Approval Body: Director/Staff Approva I Date 03/05/21 {J Signature Lauren Ninkovich Case Manager Less than 20% All , living canopy • remaining { . # *, Remaining foliage - L is chlorotic and } sporadic •1 In between dwelling and '• L parking area Below power lines 1' L - l •� F+5•3 �1 y + 4 ■ L Community Development Department Planning Division CUPERTINO APPROVE � r- Case# TR-2020-01 Application Number Approval Body: Director/ 77 Approva I Date 03/05/21 5. 1.f- Signature Lauren Ninkovich Case Manage Multi-stem trunk 5 with root collar buried , f r .a � r 4L r F Community Development Department Planning Division T , CUPERTINO APPROV Case# TR-2020-01 ti ` Application Number _ yti �■ Approval Body: Director/Staff Approva I Date 03/05/21 ` '� Signature Lauren Ninkovich .01 Case Manager Included bark - + between major L ■ limbs forms a seam of poorly-attached wood Community Development Department Planning Division CUPERTINO APPROV Case# TR-2020-01 Application Number Approval Body: Director/Staff , Approva I Date 03/05/21 Signature Lauren Ninkovich ' Case Manage ` 1 4; 4 ' i ti Mushroom at base indicates root j--- decay r I � �.L P i r�� Community Development Department •'•fl TiAcib n ■ A RA I )l �� Application - - Longdo • • • Body: I Ma Pa_Business Funding'' �� ,ram' } 4 Signature Lauren Ninkovich Case Manage y. 4 V o oak tree being removed • box Blue •.k (Quercus •• • i