TR-2022-046_22286 S De Anza Cir - Arborist Report 3rd Revision 0,z
California Tree and Landscape Consulting, Inc.
Comm L)tDevelopment Department
"Nann`ing Division — Cupertino
CUPERTINO October 18.AAff2F.OVED
Case # TR-2022-046
Mr. R 6�NdnAewgerw
22228 De A C. cle
Approval B ,dy:r irectUA
uPPe m°
Approval Dpt naRV9 ahnn rnm
Signature Catherine Tarone
RE: ANWNDE&ARBORIST REPORT FOR VALLEY OAK TREE AT 22286 S. DE
ANZA CIRCLE, CUPERTINO, CA
Dear Mr. Zeng,
This report is an amended arborist report for the Valley Oak tree growing in the side yard within
the deck of the home at 22286 S. De Anza Circle. The tree is growing within the deck space and
the house was either designed around the tree or the deck was built around the landscape tree.
The home was built approximately 60 years ago around the tree and the roof eaves have already
been modified with a reduced size to provide space for the tree to grow. The tree has grown to
fill the space the modified eaves have provided. Any further growth of the tree has the likelihood
to provide damage to the structure. In order to retain the tree for long term growth, the structure
will need to be modified further to change the roofline, potentially the location of the sliding
door, and modification of the deck to allow space for the trunk expansion. The tree has a one-
sided crown, with end weights on the branches growing towards the neighbor's property to the
west.
The City requested the following items to be included in the arborists report and additional
information:
1. You are not listed in our system as the owner of this property. Please clarify whether you are
a new owner and then please provide evidence of ownership of the property such as the grant
deed for the residence. If you are not the owner, the owner of the proper
will need to sign the
tree removal application as the applicant.
2. This tree seems to be located immediately between two residences that appear to be joined,
but owned separately. Per the Senior Planner's direction,please obtain a letter from the adjoining
property's owner authorizing the tree removal as the tree appears to straddle the property line
between the two properties. The aerial image in Appendix 1 clearly shows the tree is located on
the subject property. Please review the images and photos showing it growing within the deck
and house footprint on the subject property, not a jointly owned tree. We would have had the
rship discussion if that was the situation.
3. Please sign and return the attached Hold Harmless Statement required for all City of
Cupertino applications.
4. The City of Cupertino's Municipal Code section CMC 14.18.160, requires that replacement
trees be planted to replace the removed tree based on the size of the removed tree,per the
following:
359 Nevada Street, Suite 201,Auburn,CA 95603 Direct: (650);740-3461 Office: (530)746-4086;www.Caltic.com
22286 S. De Anza Circle Oak Amended Arborist Report October
Community reasonably be planted on the subject property as
P I a n n i ng& ilfi .jpt�fjed arborist, an in-lieu fee shall be paid by the person requesting
CUPERTINQ tip ftV_EWval permit. Fees shall be paid to the City's Tree Fund to:
Case # TR-?12a Q4,� 160,, ment Tree Guidelines
Application Numbers)
Approval Body: Dire tope of Trunk Size of Removed Tree Replacement Trees
Approval Date
01/ 4/23 (Measured 4'/2 feet above grade)
Signature Catherin U to 12 inches'_ One 24" box tree
es Two 24" box trees or One 36'box tree
Over 18 inches and up to 36 inches
Over 36 inches One 36" box tree
Heritage tree One 48" box tree
. Does not apply to R1,Al, A, RHS, and R2 zones except required privacy plantings trees in R1
zones
4. If the subject property is within the R1, Al, A, RHS, and R2 zones, the person
requesting the tree removal permit has the option to pay the fee in-lieu of planting a
replacement tree. Where the applicant would like to plant a replacement tree,but
demonstrates it is physically infeasible to plant on the subject property, the in-lieu fee
shall be based on the purchase and installation cost of the replacement tree as
determined by the Director of Community Development. In cases where it is
physically feasible to plant, but the applicant chooses to pay the in-lieu fee instead of
planting a replacement tree on the subject property,payment shall be equivalent to
one and one-half the calculated in-lieu tree replacement fee.
Based on the table 14.18.160A, a 36-inch boxed tree should be planted as mitigation. The
existing site improvements and property design has challenging space for a large-scale canopy
tree in a 36-inch boxed container to be planted. There is a spot in the front yard between the
cable connection and the small tree for a 36-inch boxed tree. Mr. Zeng intends to plant a 36"
boxed Coast Live Oak(Quercus agrifolia) trees his repl4@1Eftt mitigdlh&Seale image in
A replacement tree should not be planted within the deck area. The branch spread and crown
would not allow use of the deck space. The opening in the deck will likely accept the trunk, but
the lower branching habits on 36-inch boxed size container trees would fill up and block use of
the deck until the tree could be pruned over the use area of the deck, and then would have a
difficult time obtaining adequate roof clearance for 10 feet of firesafe roof clearance. Pruning the
young tree for use of the deck and roof clearance would be over-pruning the young tree. The
deck would need to be partially or fully removed to plant the 36-inch boxed container tree. The
36-inch boxed tree would likely have to be moved by a crane to plant the tree in the deck after
the deck was removed. The deck would need to be replaced with a smaller opening around the
young tree trunk smaller diameter. Based on these site conditions, planting the tree in the deck is
not a reasonable idea.
There is limited space in the rear landscaping for 36-inch boxed large scale tree to be planted
within existing landscaping and the grade and slope of the property. Access to the rear yard is
restricted by stairs and will likely require a crane to carry the boxed tree over the house. Due to
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22286 S. De Anza Circle Oak Amended Arborist Report October
COM-Me 11r �f� 3,� p i ta���� CIA he property and there is not really space to plant a 36-inch
r�,*I �b Iwisltm P—vWefftrl&p limited location in the front yard area.
CUPERTiNQ APP OVED
Case # The rem d � %1 dport is the from the body of the previous report with minor editing.
Applicati n Nu er(s
Mr. Zeng con?acte ou office on July 14, 2022 requesting an arborists assessment of the oak
Approva I B�ery:)b�-4�WpA needs of the inspection and set a time for July 27, 2022 to perform the
Approva I DaVgecti®l/04/23
Signature �C».G tf lTrieT 2+��,x,as iuspe Carl on 34 ednesday, July 27, 2022 at approximately 6:00 pm. The
tree is a VaWP ftV'`Quercus lobata), with a trunk diameter of 43.20 inches at approximately
4.5 feet above grade, above the deck. The tree is growing within an area surrounded by 3 sides of
the house. The area around the flare under the deck is at grade, and the flare has been excavated
to grade. The trunk grows through the deck and there are 2 large leaders at approximately six feet
of 36 and 42 inches diameter, both growing near the house, and near the eaves on the east side
and south side of the tree. The eaves have been modified to create more space for the tree to
grow, and the tree is 1 inch and 4 inches from the eaves, and the tree blocks clear access into the
sliding door on the south side of the tree. The 1-sided tree crown leans significantly south and
west, with end weights. There is limited space for the tree to continue to grow, and the eaves
have no room to be further modified without substantial roof design changes, and likely wall
design changes.
The area under the deck and under the house were inspected and no cracks in the foundation
were observed. There were no signs of oak root fungus. The reason for the requested removal is
the lack of space between the tree leaders and the house, and the potential costs of investing in
pruning the tree to reduce end weights, while waiting for the tree to impact the house.
The tree could be pruned, and it would be a relatively expensive pruning only to delay the
removal until the tree actually grows into the house, which could be within 2 to 5 years.
The tree has outgrown the available space over the 60 years the home has been around the tree,
and removal is a reasonable treatment due to the lack of space around the leaders.
Observations: The site was inspected on Wednesday, July 20, 2022 at approximately 6:00 pm.
The tree is a Valley Oak(Quercus lobata). The tree was measured with a diameter tape and
found to be 43.20 inches at approximately 4.5 feet above grade above the deck. The crown radius
was paced and found to be 38 feet. The condition was found to be 50, in the middle of the Fair
range. The tree has normal foliage. There is some thinning of branch tips. The tree is growing
within an area surrounded by 3 sides of the house. The area under the flare is at grade and the
flare has been excavated to grade. The trunk grows through the deck and there are 2 large leaders
at about six feet of 36 and 42 inches diameter, both growing near the house. The eaves on the
east side and south side of the roof line have been modified to create more space for the tree to
grow. There is no room for the eaves to be modified without re-designing the roof, and possibly
the walls adjacent to the tree. The smaller leader has a cavity at an old branch wound to remove a
branch approximately 6 feet that would have been growing into the house. There are end weights
on the long branches. The tree has a lean and much of the crown is to the west and south.
The tree condition rating scale used is:
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22286 S. De Anza Circle Oak Amended Arborist Report October
CommV15CgM1QW0,q).p1rUMnt@ RrWVYgt none to few defects or decay, and high vigor
PIS-h- iAg DivW6 — Cd3mi�� have few defects or decay, and above average vigor
cuPeRTino Fair APPCWED Found to have mitigatable defects, limited decay, and average vigor
Poo Found to have significant defects, decay, and lower vigor
Case # II �29-'N6 Found tee significant defects, decay, and low declining vigor
Dea pplicationdumberm Found to be dead
Approval Body: Director/Staff
Approval Date too��giiring the investigation were a diameter tape, tape measure, probe, and camera.
Signature ntfiac++3�s�raraYnination There were no testing or additional examinations or assessments
considered Wiffig1f6e at the time of the assignment or inspection.
Discussion: The tree is growing within an area surrounded by the house on 3 sides. A limited
inspection under the deck and under the house did not find any cracking of the foundation on 2
sides of the tree, south and east. The south leader is approximately 1 inch from the roof eave.
The east leader is approximately 4 inches from the roof eave. The tree does move a small amount
in the wind. There is no space for the tree to grow on the south side without impacting the roof.
There is limited space for the tree to grow on the east side without impacting the roof.
There are significant end weights on the long branches that should be reduced to avoid branch
failures. This could be accomplished through pruning. The flare was at grade under the deck.
There were no signs of Oak Root Fungus on the lower trunk. There is decay in the leader to the
south, but not significant enough to justify removal for the decay. The tree is taking up a
substantial amount of the deck space and access from the south sliding door is partially blocked
by the tree.
In discussions with the Mr. Zeng, he is not in favor of retaining the tree and waiting for the
damage to the structure to occur before removing the tree. Any further investments in pruning
will be part of a phased removal plan before the tree impacts the house with enlarged branch
growth.
In this situation, the choices are to remove the tree, or re-design and re-build the roof of the
house on two sides of the tree. The home rebuild is very expensive and the long-term growth of
the tree is not assured. Removal is the preferred solution in this situation.
Conclusion: The tree is a large Oak tree in fair condition. The tree has outgrown the space the
home was designed to provide. Tree removal is the desired treatment solution to avoid damage to
the home and investing in a tree that may not have a long life in the current situation.
Please contact me at 650-740-3461, or gordon@mannandtrees.com, if you have any questions
about this report or any other services we provide.
Sincerely,
Gordon Mann
Consulting Arborist and Urban Forester
Registered Consulting Arborist#480
ISA Certified Arborist and Municipal Specialist#WE-0151 AM
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22286 S. De Anza Circle Oak Amended Arborist Report October
CO are#'CP91Y9J&P WMDtFQftWUrtt Mpn
CUPERTINQ California TAj KbVEB dscape Consultants, Inc.
Case # 359 Nev4 - itAge 201
Office:' UJ'°j'4 "`AVM; Direct: (650) 740-3461
Approval Bg ¢o i8l1 --�s.com
Approval 6Lr-ww'c t
Signature AttiN}ffWf7arone
Appendix lc,,J g&—additional images added*
Appendix 2 - Tree Tree Pruning
Resume for Gordon Mann
Appendix 1 —Images
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Aerial image showing the tree in the approximate location
on the subject property growing in the deck area
Page 5 of 14
22286 S. De Anza Circle Oak Amended Arborist Report October
Community Development Department
,
Planning Division — Cupertino
'CVPERTINO
b'
Case # _:>
Approva l B. fF
Approva I
Signature
F/
E leader near modified eave roof line E leader growing above home at modified eave
Page 6 of 14
22286 S. De Anza Circle Oak Amended Arborist Report October
Corr murAty Development-Departm
Planning Division — Cupertino
CUPERT+NQ APPROVED
Case # L
��A1: .,n Numbei(s)- } 4.
Approva I B irector/ Staff.t
Approva I
Signature
, Y
F,
, r
S leader growing near modified eave S leader growing near modified eave,old branch
wound
2
i
Tree growing thorough deck Base of tree under deck, excavated to flare
Page 7 of 14
22286 S. De Anza Circle Oak Amended Arborist Report October
Co pm
CUPERTINO V,ED,
Case#
tV,I PI':rll it f1l MI. d - y..
Approva I B Director/ St.a ;,
Approva I
Signature `s
p
Tree viewed from west side Tree viewed from street, leaning 1-sided crown west
*Google maps street view showing space for a 36-inch container Coast Live Oak tree
Page 8 of 14
22286 S. De Anza Circle Oak Amended Arborist Report October
Co '
CUPERTINO APPROVED
Case # TR2022- 46. _
Application Numbers)
Untitled layer
Approval B dy: I jreQlvcLStaff
Approva I to QPI alpyoutine
Signature Caterine farroone
Base rna�ase Manager
i
t� .� y
�} * �
+ _ i 4K
4
Aerial image of property showing location for a 36-inch boxed container tree
to fit in the site grades and existing landscape
Appendix 3—Pruning
The tree could be pruned to reduce the likelihood of branch failure. The pruning will do nothing to reduce
the future impact of the leaders impacting the house.
Objective: Reduce long end weights to reduce the risk of branch failure on the subject and neighbor's
properties,while retaining as large a crown as possible.
System: Natural
Location of pruning: Upper crown in the outer branches to shorten branches and reduce leverage.
Pruning cuts will be branch removal cuts and reduction cuts. Cuts will be made in the outer 25%of the
crown to shorten branches. Cut sizes will range from 2"diameter to 6"diameter where needed to reduce
long branches.
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22286 S. De Anza Circle Oak Amended Arborist Report October
Community Development Department:
Planning Division—Cupertino
Assumption$DDand Limitations: This report provides information about the subject trees at the time of the
c u Pe RTC n o inspection. 'P�epss WV iUMitions may change over time. This report is only valid for the trees with the
Case # conditionTIp?rQQ22t0146ime of the inspection. All observations were made while standing on the
ground.Application Number(s)
Approval BQd�6rQirWQtis$WIfilists who use their education,knowledge,training and experience to examine
Approval l DML16,reOta M21measures to enhance the beauty and health of trees, and attempt to reduce the risk of
living near trees. Clients may choose to accept or disregard the recommendations of the arborist or seek
Signature dd ri J&one
Case Manager
Arborists cannot detect every condition that could possibly lead to the structural failure of a tree. Trees
are living organisms that can 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 under all
circumstances, or for a specified period of time. Likewise,remedial treatments, like any medicine, cannot
be guaranteed.
Treatment,pruning, and removal of trees may involve considerations beyond the scope of the arborist's
services such as property boundaries,property ownership, site lines, disputes between neighbors,
landlord-tenant matters, etc. Arborists cannot take such issues into account unless complete and accurate
information is given.
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.
Page 10 of 14
22286 S. De Anza Circle Oak Amended Arborist Report October
Community Development Department
Planning Division — Cupertino
CUPERTINO APPROVED California Tree and Landscape Consulting, Inc.
Case # TR-2022-046
Application Number(s)
GORDON MSSA{J�{--N
Approva I BOE&Rl R�rD�TJ ICATIONS
Approva I Date
Signature Signature G urine Taroge :
17��ag irCiar of sc'ienz'�orestry, University of Illinois,
Champaign.
1982 - 1985 Horticulture Courses, College of San Mateo, San Mateo.
M� a
1984 Certified as an Arborist, WE-0151A, by the International
Society of Arboriculture (ISA).
2004 Certified as a Municipal Specialist, WE-0151AM, by the
ISA.
2011 Registered Consulting Arborist, #480, by the American Society of
Consulting Arborists (ASCA).
2003 Graduate of the ASCA Consulting Academy.
2006 Certified as an Urban Forester, #127, by the California Urban Forests
Council (CaUFC).
2011 TRACE Tree Risk Assessment Certified, continued as an ISA Qualified Tree
Risk Assessor(T.R.A.Q.).
PROFESSIONAL EXPERIENCE
2016—Present CALIFORNIA TREE AND LANDSCAPE CONSULTING, INC (CaITLC).
President and Consulting Arborist.
Auburn. Mr. Mann provides consultation to private and public clients in health
and structure analysis, inventories, management planning for the care of trees,
tree appraisal, risk assessment and management, and urban forest management
plans.
1986 - Present MANN MADE RESOURCES. Owner and Consulting Arborist. Auburn.
Mr. Mann provides consultation in municipal tree and risk management, public
administration, and developing and marketing tree conservation products.
2015 —2017 CITY OF RANCHO CORDOVA, CA. Contract City Arborist.
Mr. Mann serves as the City's first arborist, developing the tree planting
and tree maintenance programs,performing tree inspections, updating
ordinances,providing public education, and creating a management
plan,
1984—2007 CITY OF REDWOOD CITY, CA. City Arborist, Arborist, and Public Works
Superintendent.
Mr. Mann developed the Tree Preservation and Sidewalk Repair Program,
supervised and managed the tree maintenance program, performed
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22286 S. De Anza Circle Oak Amended Arborist Report October
Community D eve Ic%,Wq&(PgR?lgtM tlistered the Tree Preservation Ordinance. Additionally,
Planning Divisibq�i('C'ripvrthfi)(Sollowing Public Works programs: Streets, Sidewalk, Traffic
CUPERTINO Signals and '-At- Parking Meters, Signs and Markings, and Trees.
1982— 4 OF SAN MATEO, CA. Tree Maintenance Supervisor.
Case # -r1�-202 -�4
ateo, Mr. Mann provided supervision and management
Application Num e s
o tie tree maintenance program, and inspection and administration of the
Approval Body: Director/ "tage Tree Ordinance.
Approval D4t9J7 d9)b'4/23 VILLAGE OF BROOKFIELD, IL. Village Forester.
r. Mann provIZINT inspection of tree contractors, tree inspections, managed
Signature Catherine TarorAo respE)flse+E) Dut i, Elm Disease. He developed an in-house urban forestry
Case Mana r
preogram with leadworker, supervision, and management duties to
complement the contract program.
1979 - PresentINTERNATIONAL SOCIETY OF ARBORICULTURE. Member.
•Board of Directors (2015 - Present)
*True Professional of Arboriculture Award (2011); In recognition of
material and substantial contribution to the progress of
arboriculture and having given unselfishly to support
arboriculture.
1982 - Present WESTERN CHAPTER ISA(WCISA). Member.
• Chairman of the Student Committee (2014 - 2017)
• Member of the Certification Committee (2007 - Present)
• Chairman of the Municipal Committee (2009 - 2014) .
Award of Merit (2016) In recognition of outstanding
meritorious service in advancing the principles, ideals and
practices of arboriculture.
• Annual Conference Chair(2012)
• Certification Proctor(2010—Present)
• President(1992 - 1993)
• Award of Achievement and President's Award (1990)
1985 - Present CALIFORNIA URBAN FORESTS COUNCIL (CaUFC). Member; Board
Member(2010 - Present)
1985 - Present SOCIETY OF MUNICIPAL ARBORISTS (SMA). Member. e Legacy
Project of the Year(2015) o In recognition of outstanding meritorious
service in advancing the principles, ideals and practices of arboriculture.
.Board Member(2005 - 2007)
2001 - Present AMERICAN SOCIETY OF
CONSULTING ARBORISTS.
Member. e Board of Directors (2006 -
2013)
• President(2012)
2001 - Present CAL FIRE. Advisory Position.
• Chairman of the California Urban Forestry Advisory Committee (2014 -
2017)
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22286 S. De Anza Circle Oak Amended Arborist Report October
Comr RU{ ty Kg4ppmeAt*WPW eMXTIONAL STANDARDS INSTITUTE (ANSI): A300
�I9,K il�bTDARDS
CUPERTINO APPROVE DCOMMITTEE. SMA Representative and Alternate.
Case # TR-2022-04t Alternative Representative for SMA (2004 - 2007; 2012 - Present)
Application Number) Representative for SMA (2007 - 2012)
2007 - Present SACRAMENTO TREE FOUNDATION. Member and Employee.
Approval Body: Director/Staff, Co-chair/member of the Technical Advisory
Approva l Date 01/04/23 committee (2012 - Present)
Signature Catherine Tarone • Urban Forest Services Director (2007 - 2009)
Case Manager e Facilitator of the Regional Ordinance
Committee (2007 - 2009)
• 1988 - 1994 TREE CLIMBING
COMPETITION.
■ Chairman for Northern California(1988 - 1992)
■ Chairperson for International (1991 - 1994)
PUBLICATIONS AND LECTURES
Mr. Mann has authored numerous articles in newsletters and magazines such as Western
Arborist, Arborist News, City Trees, Tree Care Industry Association, Utility Arborists
Association, CityTrees, and Arborists Online, covering a range of topics on Urban Forestry,
Tree Care, and Tree Management. He has developed and led the training for several programs
with the California Arborist Association. Additionally, Mr. Mann regularly presents at
numerous professional association meetings on urban tree management topics.
Page 13 of 14
22286 S. De Anza Circle Oak Amended Arborist Report October
Co r �aiv� ,� . { rt me nt
Planning Division — Cupertino
CUPERT,HQ I, Gordon MA`PR b that:
Case # TR-202 nd I have personally inspected the tree and site data
pp icaUon um er s
referred to in this report and have stated my findings accurately. The extent of the
Approval Body: Dlmmfiosti�jfftated in the attached report under Assignment;
Approval Date 01/04/23
have no current or prospective interest in the vegetation, or the property that is the
Signature Catheiipg gg R5 ,,,, ��a and h _. _o personal interest or bias with respect to the parties
se anager
invo ve ;
The analysis, opinions and conclusions stated herein are my own and are based on current
scientific procedures and facts;
My analysis, opinions, and conclusions were developed, and this report has been
prepared according to commonly accepted arboricultural practices;
No one provided significant professional assistance to me, except as indicated within the
report;
My compensation is not contingent upon the reporting of a predetermined conclusion that
favors the cause of the client, or any other party, nor upon the results of the assignment,
the attainment of stipulated results, or the occurrence of any subsequent events.
I further certify that I am a member in good standing of the International Society of
Arboriculture (ISA) and an ISA Certified Arborist and Municipal Specialist. I am also a
Registered Consulting Arborist member in good standing of the American Society of Consulting
Arborists. I have been involved in the practice of arboriculture and the care and study of trees for
over 43 years.
Signed:
44
Gordon Mann
Date: October 18, 2022
Page 14 of 14