HomeMy WebLinkAboutArborist Report179 W Palm Dr Arcadia, CA 91007
Prepared for:
Siu Hing Kwok c/o PDS Studio
711 First Ave Arcadia, CA 91006
Arcadia, CA 91006
March 18, 2019
Prepared by:
Javier Cabral Consulting Arborist
International Society of Arborists # WE- 8116A
1390 El Sereno Ave
Pasadena, California 91103
(626)818-8704
ictcabral sbc8lobal.net
I International
i Society
of Arboriculture'"
ISA Certified Arborist'
Javier Cabral
Certlrcate Number. WE -8116A
E)iration Date: Dec 31. 2019
Siu Hing Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18 2019
Javier Cabral / Consulting Arborist Pg. # 1
Table of contents
Summary----------------------------------------------------------------- pg. 3
Background and assignment Summary ------------------------------ pg. 3
Google Earth Image & Site conditions ------------------------------- pg. 4
List Inventory ------------------------------------------------------------ pg. 5
Site Survey With Trees-------------------------------------------------- pg. 6
Site Plan With Proposed Tree Removals----------------------------- pg. 7
Tree Pictures------------------------------------------------------------- pg. 8 thru 12
Protection Guidelines --------------------------------------------------- pg. 13 thru 17
Certificate of performance --------------------------------------------- pg. 18
Arborist Signature Page ------------------------------------------------ Pg. 19
Stu Hing Kwok c/o PDS Studio 179 W Palm Dr Arcadia CA 91007 March 18, 2019
Javier Cabral / Consulting Arborist Pg. 4 2
Summary
Mr. Kwok,
You have retained my consulting arborist services to provide a tree inventory and protection plan for the
property described as 179 W Palm Dr Arcadia, CA 91007. You are in the planning process of demolishing the
existing single family home and redeveloping the property with a new two story single family home.
The proposed demolition and construction is expected to have minimal impact to the protected trees that will
remain due to the distance of excavations, trenches, and footings to the tree trunks. A complete tree protection
plan will be included to protect above and below ground tree parts from physical damage, soil compaction, and
chemical damage.
Background and assignment
Mr. Kwok has requested that I provide the following arboricultural services.
1) Identify all significant trees and protected trees on the property and label them on the
architectural drawings as provided to the arborist by Mr. Philip Chan.
2) Evaluate the current health of the trees and possible impacts of the proposed construction based
on the provided site plan and make recommendations.
3) Provide a tree protection plan that will help ensure the short and long term health of the trees that
will remain during and after construction activities are completed.
The following report is based on my site visit on March 15, 2019 and my analysis of the trees, site plan,
and surrounding landscape. For the purpose of this report I will address these trees as Trees # 1 thru 10.
Sin Hing Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18 2019
Javier Cabral / Consulting Arborist Pg. 4 3
Site conditions
A one story single family home currently exists on this property located 179 W Palm Dr Arcadia, CA 91007
1) There are 10 total trees on the subject property of which 2 trees are protected due to their species,
diameter, and location.
2) There are no protected trees proposed to be removed for the proposed new development and all remaining
protected trees will have a protection plan to help ensure that they survive in good health.
Sin Hing Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18, 2019
Javier Cabral / Consulting Arborist Pg. # 4
List Inventory pg. 1
Tree #
I
Common Name
Stone pine
Botanical Name
Pinus pinea
Diameter at 4.5
feet (dbh)
In inches
28
Height
(in feet)
60
Spread
(in feet)
42
Physiological
condition
good
City Tree
Yes or No
no
Protection
status
yes
REMOVE OR
PRESERVE
PRESERVE
2
Stone pine
Pinus pinea
8
12
10
dead
no
no
REMOVE
3
Lemon
Citrus
multi 1-1-1-1-(-1
8
8
good
no
no
PRESERVE
4
Mock orange
Pittosporum tobira
10
12
12
good
no
no
PRESERVE
5
Victorian box
Pittosporum undulatum
multi 13.15
34
24
good
no
no
REMOVE
6
Persimmon
Diospyros Virginiana
9
35
24
good
no
no
REMOVE
7
Lemon
Citrus
multi 1.2.2.3.3
12
14
good
no
no
REMOVE
8
Yew pine
docarpus macrophyllus
9
22
8
good
no
no
REMOVE
9
Evergreen pear Pyrus kawakamii
20
45
21
good
no
yes
PRESERVE
10
Avocado
Persea americana
18
38
21
Poor 30 % ded
wood
no
no
PRESERVE
Sin Hine Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18, 2019
Javier Cabral / Consulting Arborist Pg. # 5
w an i rees
6 Persimmon
BH = 9 in. J
# 7 Lemon
DBH = multi
t 1-2-2-3-3 in.
WOOD
FENCE
k 1 Stone pine
= 28 in.
# 9 Evergreen pear
DBH = 20 in.
BWOOD # 10 Avocado
FENCE
DBH = 18 in.
# 8 Podocarpus
macroph Ilus DBH = 9 in.
r
# 5 Victotian box
DBH = multi 13-15 in.
1
# 3 Stone pine
DBH = 8 in.
75.00
S88°55'30'W
.y�
ALM _
CMS 'x'
DBH = multi
1-1-1-1-1-2 in.
;F s MOCK orange
DBH = 10 in.
Siu Hine Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18, 2019
Javier Cabral / Consulting Arborist Pg. # 6
me rtan wan rroposea i ree memovais
NORTH
I f ..ev I R: wvw
P6110 4 I tl
;TGG-W'W I
wata�EPsl
READ ATfEP I 1 5
WPM
PFM sa •xrr � ! \ i Tc. PF/R as Isr
g NIEiW 1r
# 6 Persimmon 7 Citrus Y S# 8 Yew pine I rs
to be removed _ be removed to be removed 18 i
pr
r�
c I
F1~ I ------ r---------� li
I # S Victorian box -' �� 1'
to be removed Fl
\ RMPIPY_:6B .$S4 1�-".-._.�-_.___..
- DRIVFRFt ;
• 8=�s 1
ss I # 2 dead Pine
x 1 ' to removed RP YFR 1
it
B a
5 3 S 5
4
VOTES: .�
JRf.c.RG�'KR:i(, X nlclT Stay[
N,D#RSXEp'NcryEr PE1GE f9CM -' __ -
IVC9iCFP] w
SITE PLAN Fr a} ula a}i�o l
esus SCALE Ww1'-0'
MG .PEEN SJRiM:E
IFF $1V:U:fD IhY-O nMi'.t 3.Ri
Siu Hine Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18.2019
Javier Cabral / Consulting Arborist Pg. # 7
Siu Hine Kwok c/o PDS Studio 179 W Palm Dr Arcadia CA 91007 March 18, 2019
Javier Cabral / Consulting Arborist Pg. # 8
{' '':
y : .�.�l�a
•
� t
;" ^M�
5
�!` � .�
'�' 1` _..
.... �.. i
-..y
.,�: _ r
)- � �
. qv �} .\�- � q.
y. �� �
.. y e .. ',.. y .,: � Y .
.. � �•��
� ;��
,.�» � . . --s � t� .
aq1, � � � ♦ � Ny�� � JJ
Jya 'j
,,� � r �, �,-t •",�P"- ; A� 1, � � �, . ,
� X
ONWN
�K:
q V
a
?y r JR ♦ - e' i
,Yok
4 ! .1 TA Ftti 4 w A J
� r
r i �, rj .. j. s`7F1.•IF
# 10 Avocado
r (D
General Tree Protection Plan
1) Avoid damaging the roots, stem, and branches with mechanical and manual equipment. No roots shall
be severed within the Tree Protection Zone "TPZ" which is the same as the area within the Tree
Protection Fencing "TPF." Roots greater than two inches in diameter outside of the TPZ shall be cleanly
severed with a sharp tool such as a hand saw or manual pruners..
2) Avoid soil compaction by prohibiting the use of heavy equipment such as backhoes and bobcats under
the tree drip line. If access within the TPZ is required during the construction process, the route shall be
covered in a 6 inch layer of mulch in the TPZ and the area shall be aerated and fertilized at the conclusion
of construction.
3) Do not store or park tools, equipment, vehicles, or chemicals under the tree drip line. No equipment or
debris of any kind shall be placed within the TPZ. No fuel, paint, solvent oil, thinner, asphalt, cement,
grout, or any other construction chemical shall be stored or allowed in any manner to enter within the
TPZ.
4) Avoid washing of equipment and tools such as wheel barrels, shovels, and mechanical motors under the
tree drip line.
5) Prevent flooding and pooling of service water under the drip line. Grade changes that will flood the TPZ
are prohibited unless a drainage plan is implemented. No grade changes within the TPZ shall be allowed.
6) Avoid cutting tree roots whenever possible. This can sometimes be accomplished by bridging roots,
tunneling, or radial trenching. If roots must be cut use a sharp tool that will make a clean flush cut and not
tear the roots. If possible all digging under the tree drip line should be done manually to avoid tearing out
of roots. Roots outside of the TPZ may be cleanly severed vertically with a sharp garden tool.
7) Do not raise or lower the grade within the tree protection zone of any protected trees unless approved
by the project arborist. Roots greater than 1 inch in diameter that are exposed or damaged shall be cut
with a sharp tool such as a hand saw, pruners, or loppers and covered with soil in conformance to industry
standards as soon as possible. If any work is required within the TPZ the Arborist shall be consulted
previous to beginning. The Arborist shall be contacted as soon as possible to arrange for a timely
inspection and prevent delays.
Siu Hing Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18, 2019
Javier Cabral / Consulting Arborist Pg. # 13
S) Protection fencing shall be 5 to 6 ft. high chain link freestanding panels or secured to posts driven into the
ground. There shall be no entry gates into the protected zones. The protection fencing shall be in place
before demolition begins and shall only be removed or reduced when all heavy equipment such as
back -hoes, bobcats, loaders, and other heavy equipment with tires and tracks will not be required.
Fencing can be adjusted or sections reduced or removed as the project advances into the landscaping
phases of the project. The consulting arborist shall be contacted if there are doubts about the placement or
removal of fencing.
9) Landscape preparation & excavation within the TPZ shall be limited to the use of hand tools and
small hand-held power tools and shall not be of a depth that could cause root damage. No attachments or
wires other than those of a protective or non -damaging method shall be attached to a protected tree.
10) Construction personnel should be briefed on the importance of the guidelines before construction
begins and reminded of it during tailgate meetings and as necessary. A printed copy should be posted
where employees can be reminded of it.
Siu Hing Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18.2019
Javier Cabral / Consulting Arborist Pg. # 14
vvan rrotecnon
112 ft. I
� 6 Persimmon
temove
# 7 Lemon
Remove
4
191
1d
12 ft.
# 8 Podocarpus
1
0
olo
Z
0--=
5 Victotian box
Remove
...........F 15 ft. -=500-
S88°55'30°W
6' WOOO
FENCE
4
CT'
'=T
Tree Protection Fencing "TPF" and Tree Protection Zone "TPZ"
unless otherwise noted by the consulting Arborist. Fencing shall be in completely
installed before any construction begins including demolition. Any roots
encountered along the perimeter of the TPF and greater than 2 in. shall be cleanly
cut with a sharp tool such as a hand saw and not torn or pulled out with mechanical
equipment such as backhoes and bucket loaders.
Sin Hing Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18 2019
Javier Cabral / Consulting Arborist Pg. # 15
Tree # 1 Stone Pine Protection Details
a) Structural excavation and over -excavation: Structural Excavation: The proposed footing for the new
garage is almost directly on the footprint of the existing garage. It will be extremely important that the
demolition of the existing garage adjacent this Pine tree be done with extreme care to preserve the
roots from damage by large equipment. It is recommended that the demolition in that area be done
from the north side of the tree trunk and the existing foundation be carefully peeled away from the tree
trunk.
b) Driveway: The demolition of the driveway shall also be done in the same manner mentioned above by
gently pulling the existing concrete driveway away from the trunk of the Pine tree
c) New Landscaping: This Pine tree has a large amount of surface roots and plantings shall be no closer
than 5 ft. from the edge of the trunk on all sides. Planting holes shall be relocated if roots greater than 2
inches are encountered.
a) New Sprinklers: No trenching for sprinklers shall be performed within 10 ft. of the edge of the tree
trunk on all sides of this tree.
d) Canopy pruning: No pruning will be required to complete the proposed construction project.
e) Root pruning: Any roots encountered for the irrigation system for the lawn can be cleanly severed with
a sharp tool.
f) Protection Fencing: shall consist of 6 ft. high chain link free standing panels and shall be in place before
any works begins including demolition. All protection fencing may be removed or reduced when all
heavy equipment and major construction is completed and landscaping is ready to be installed.
g) Maintenance: During the hot summer months the tree shall be watered as needed until the sprinkler
system is installed and working.
h) Encroachment impacts: This project is expected to have a minimal to moderate impact on the short or
long term health of this tree and it is expected to survive in good health if the protection
recommendations are followed and adhered to.
Sin Hine Kwok c/o PDS Studio 179 W Palm Dr Arcadia CA 91007 March 18, 2019
Javier Cabral / Consulting Arborist Pg. # 16
Trees # 9 Evergreen pear Protection Details
A. Structural excavation and over -excavation: This tree will not be impacted by any structural
excavations due to the long distance between the proposed home and the tree.
B. Driveway and walkways: This tree will not be impacted by the any driveway or walkways
C. New Landscaping: Soil tilling for landscaping and the proposed lawn within 10 ft. of the tree trunk shall
be done manually and to a maximum depth of 2 inches. No plants shall come closer than 6 ft. of the
tree trunk of this tree.
b) New Sprinklers: No trenching for sprinklers shall be performed within 10 ft. of the edge of the tree
trunk on all sides of this tree.
D. Canopy pruning: No Trimming will be required for this proposed project.
E. Root pruning: Any roots encountered for landscaping beyond 8 ft. of the tree trunk can be manually
pruned with a sharp tool.
F. Protection Fencing: shall consist of 6 ft. high chain link free standing panels or hammered posts as far
as possible from the tree trunk and shall be in place before any works begins including demolition.
Protection fencing may be removed or reduced when all heavy equipment and major construction is
completed and landscaping is ready to be installed.
G. Maintenance: During the hot summer months the tree shall be watered as needed until the sprinkler
system is installed and working.
H. Encroachment impacts: This project is expected to have a minimal to moderate impact on the short or
long term health of this this tree and it is expected to survive in good health if the protection
recommendations are followed and adhered to.
Sin Hing Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18 2019
Javier Cabral / Consulting Arborist Pg. # 17
Certificate of Performance & Limiting Conditions
I Javier Cabral certify the following:
• No warranty is made, expressed or implied, that problems or deficiencies of the trees or the property will not
occur in the future, from any cause. The Arborist shall not be responsible for damages or injuries caused by any
tree defects, and assume no responsibility for the correction of defects or tree related problems.
• The owner and client of the trees may choose to accept or disregard the recommendations of the Arborist or
seek additional advice if the owner decides not to accept the Arborists findings or recommendations.
• The Arborist has no past, present or future interest in the removal or preservation of any tree. The opinions
contained in the Arborist report are independent and objective judgements of the Arborist.
• The findings, opinions, and recommendations of the Arborist are based on based on the physical inspection of
said property. The opinions are based on knowledge, experience, and education.
• The Arborist shall not be required to provide testimony, provide site monitoring, provide further documentation
for changes beyond the control of the Arborist, be deposed, or to attend any meeting without contractual
arrangements for additional fees to the Arborist.
• The Arborist assumes no responsibility for verification of ownership or location of property lines, or for any
recommendations based on inaccurate information.
• This Arborist report may not be reproduced without the expressed written permission or the Arborist and the
client to whom the report was provided to. Any changes or alteration of this report invalidates the entire report.
• Arborists are tree specialists who use their education, knowledge, training and experience to examine trees,
recommend measures to enhance the beauty and health of trees, make recommendations to prevent or minimize
damage to trees during and after construction projects, and attempt to reduce the risk of living near trees.
Clients may choose to accept or disregard the recommendations of the arborist, or to seek additional advice.
• Arborists cannot detect every condition that could possibly lead to the structural failure of a tree. Trees are
living organisms that 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, and other issues.
Arborists cannot take such considerations into account unless complete and accurate information is disclosed to
the arborist. An arborist should then be expected to reasonably rely upon the completeness and accuracy of the
information provided.
• Trees can be managed, but they cannot be controlled. To live near trees is to accept some degree of risk. The
only way to eliminate all risk associated with trees is to eliminate all trees.
Siu Hing Kwok c/o PDS Studio 179 W Palm Dr Arcadia, CA 91007 March 18, 2019
Javier Cabral / Consulting Arborist Pg. # 18
Thank you and feel free to contact me if you have any questions or concerns.
Yours truly,
Javier Cabral / Consulting arborist
1390 El Sereno Ave Pasadena, Ca 91103
International Society of Arboriculture 9 WE 8116A
Siu Hing Kwok c/o PDS Studio 179 W Pahn Dr Arcadia, CA 91007 March 18, 2019
Javier Cabral / Consulting Arborist Pg. # 19