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TR-2013-15b OFFICE OF COMMUNITY DEVELOPMENT � • . CITY HALL 10300 TORRE AVENUE •CUPERTINO, CA 95014-3255 C U P E RT I N O (408) 777-3308• FAX (408)777-3333•planning(a�cupertino.org April 25, 2013 Sarah Hon A Plus Tree Service 1195 Azuar Dr Vallejo, California 94592 SUBJECT: DEAD AND HAZARDOUS TREE REMOVAL PERMIT ACTION LETTER - TR- 2013-15: T'his letter confirms the decision of the Director of Community Development, given on April 25, 2013, approving a tree removal permit to remove one dead 26" diameter White Alder (Alnus rhombifolia) tree located along the easterly property line and one hazardous Red Ironbark Eucalyptus (Eucalyptus sideroxylon) tree located near the center of the property at 10159 S Blaney Ave. This removal is approved with the following conditions: 1. APPROVED PROTECT This approval is based on the arborist report prepared by Sarah Hon (Certified Arborist WE-9519A) of A Plus Tree Service, received April 5, 2013, consisting of four (4) pages, except as may be amended by conditions in this approval. 2. TREE REPLACEMENTS The applicant shall be required to plant two (2) 36-inch box Red Maple (Acer Rubrum 'October Glory') trees around the immediate location as the removed trees per the applicant's replanting plan and in accordance with the City's Protected Trees Ordinance. Modifications to tree species and location may be made to the approved replacement plan pending staff approval. The required replacement trees shall be planted within 30 days of the effective approval date of this tree removal permit Staff has made the findings necessary to grant the dead tree removal permit in accordance with Section 14.18.180 of the Protected Trees Ordinance. Sincerely, Simon Vuong Assistant Planner (408) 777-1356 simonv@cu�ertino.or� cc: Anthony DeShaw,Biltmore Apartments, 10159 S Blaney Ave,Cupertino, CA 95014 � ' Arborist Re ort p `TREE SERVICETM by Sarah Hon NOT YOUR AVERAGE TREE SERYICE ISA CertifiedArborist WE-9519A � r,f,r-�«..���A =' i � ` � ��� � _ � -,L �-�Z�.1�3.�_....�._._. �� 1195 Azuar Drive °�--��--- �„�I .._ _ _ , ._ Vallejo, CA 94592 (866) 815-2525 ...,..: .... �'"�s y�� , . . . APR 0 5 20�� sarah(�aplustree.com �-�. . ` ��-�j � / ___. _ ___...� �h/ www.aplustree.com �r Background This report is concerning two(2)tree located at 10159 South Blaney Ave,Cupertino.The property complex is known as The Biltmore,owned and managed by Prometheus Real Estate Group. I've been Information the on-call Arborist at this property for the past 2 years. Prometheus is seeking to obtain a tree removal permit for two(2)tree located on the property. Assignment (and While walking the site for a visua�evaluation of the trees for this year, I found 2 trees that are in conditions that are a hazard and should be removed.The trees are as follows: any limiting A. White Alder-Alnus rhombifolia-26"DBH factors) B. Red Ironbark Eucalyptus-Eucalyptus sideroxylon-28" DBH Observations My observations are posted with the photos in the attachment area of this arborist report. Testing and There were no soil,tree or other physical testings. Analysis �ISCUSS1011 Tree A(White Alder)is dead. I've been monitoring it for the past 2 years,and there are no signs of new growth.. During my last visit on the property, I noticed mushrooms and fungus growing at the trunk base.Surface roots also broke apart easily when tested with the heel of my shoe.This is a strong indication that there is probably root rot.. Root rot causes the tree to become unstable as the anchoring roots begin to decompose.This tree should come out immediately to prevent a possible blowdown accident. In the case of a tree failure,the target will be the building in which the tree is leaning toward. Tree B(Red Ironbark)has had a major limb failure in the past(see photos)on the trunk of one of the main leaders.The limb failure created about a 4 foot cavity down the length of the trunk,allowing decay and a weakened structure.The V-shaped angle of crotch and included bark of the co-dominant leaders is also significantly weaker than if the co-dominants had a U-shaped crotch.The included bark at the crotch is a significant point of structural weakness and acts as a wedge and force the branch union to split apart.The target of this tree is high;between an apartment building and walkway.Also,with recent fluctuations in temperature,and with the nature of this tree species known to have frequent summer limb drop,the risk of failure is at an increased level.Immediate removal is strong/y advised. Recommendations The recommendation is that these two(2)trees be removed immediately and be replaced with two(2) „ 1 Attachments Tree A-White Alder �� � � " ���' "�,��`�" °�� ���'� ��v��,� "°���'a �� ' ti � �,� , wn, -�, �� �'� a"�,�� �;e a���, m , i,� �"� .� :� Photostaken February °�� ��. ���` '� � ��w,� � r � �� •��` � � .� x � , �.niqq � �"�D�`F.^� �y k Y, ,�•+ . W �ar'"�P M'�� ,�� x ' '4 2013. Photos show tree, � � r��� ���: �� ,° � �� ;°�� , a, " ._. � � � �.o- � � �� ���_ �~�_ �,, ,. � N trunk decay and signs of �" '��' �a .{� ��°F '��' � � � �� � root rot at the base. � ����� � �` �>,�,�, �.�� -� � :�� � � � w_ .�.__ � "�" �, ��>�,' � `� �:� ��„� ,�� "� " �� �.Kw � ,, . �. �, "� .��� ��� �. ��� a:�.�°��� � �, �,�,.;, r � A���,�`: ; . , ' � �m �v��a.A. ".`d, „„,.�,w«...�...+. � � .�.a RW.� � �' ���� . ,�� �. . .. «. ,,� "�»� . • . �' ,:/°'�s�.,°ffi a^.p�'#"� ,. ��x � �. ����. � �""'. „�cy„ .. � o`,���: .. � n�`.-r�4a� Fw'�' . . .,. � ''�� k�� . �� �-�����. *a . . ° , : g � .-. 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Replacement of two 36" ' :.� Box of the tree species � �'`�' � Red Maple(Acer Rubrum �_� 'October Glor ' to be � � Y) . � � .._, � � planted within 5 feet of ��� " � , . - � ,. �.x�; ..� 4 W .,., � .. C�t ' � A�.. removal sites. �r�� � , ; . ; ,� � _.__.� _. __. �__� u�.��.�,�, .__._ _.� � , :.. � ..� _� � a���,.. � � _._._- - . � n���„� � ���sa , ____ .o -', �_ � � � � �_::,,'�t� ���. � ': _.._.._1 - , __ �— � _. CAR�f�l1^u ��; � �� :. Cil._..._� t CL..� '.M, r�r�a k i r��, � _-------. - � _, � ___. { ;,.. r� �. ���.,., -. OF�kCE �- ; . • ; g �=�'-°.G � d . w.,� �.._.......9 . + � 5 fiR'"eC _...... .... :�c„� Rc.4.:;„�,�;. � ....�. � ... REE. � .:��� _ �_ . � ' 1 $ j � . ��4� . r:..a�as �_��a . ... r � ..i r ''�'1 P W k!'M..rg . .,.■,+are ...._. _..... _...... --�._ � .. � , ,. �t'��.' ,�1 �,�(::-I�+i."�"�T.' _._.. 4