HomeMy WebLinkAboutArborist Report
220 W. Naomi Ave Arcadia, CA 91007
Prepared for:
Kenny Yu
5917 Oak Ave #317
Temple City, CA 91780
November 10, 2018
Prepared by:
Javier Cabral Consulting Arborist
International Society of Arborists # WE- 8116A
1390 El Sereno Ave
Pasadena, California 91103
(626)818-8704
jctcabral@sbcglobal.net
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 1
Table of contents
Summary ----------------------------------------------------------------- pg. 3
Background and assignment Summary ------------------------------ pg. 3
Google Earth Image ----------------------------------------------------- pg. 4
List Inventory & Condition -------------------------------------------- pg. 5
Site Plan With Trees ---------------------------------------------------- pg. 6 & 7
Tree Pictures ------------------------------------------------------------- pg. 8 thru 14
Protection Guidelines --------------------------------------------------- pg. 15 thru 23
Certificate of Performance & Arborists Disclosure Statement ---- pg. 24
Arborist Signature Page ------------------------------------------------- Pg. 25
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 2
Summary
Mr. Yu,
You have retained my consulting arborist services to provide a tree inventory and tree protection plan
for the property described as 220 W. Naomi Ave Arcadia, CA 91007. You are in the process of demolishing
the existing single family home and redeveloping the property with a new single family home.
The proposed demolition and construction is expected to have minimal to moderate impact to some of the
protected trees, a complete tree protection plan will be included to protect above and below ground tree parts from
physical damage, soil compaction, and chemical damage during demolition and throughout the entire construction
process including demolition..
Background and assignment
Kenny Yu “Franklin Home Developments Inc.” is a luxury home designing corporation that has been
hired to design the proposed home and separate structures.
Mr. Yu has requested that I provide the following arboricultural services.
1) Identify the trees on the property and label them on the site plan.
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
during demolition and throughout construction of the proposed new home, separate structures,
and accessory features.
The following report is based on my site visit on September 26, 2018, analysis of the trees, site plan,
landscape plan, and verbal information provided by Mr. Yu. For the purpose of this report I will address
this tree as Trees # 1 thru # 10
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 3
Google Earth Image
Tree # 1: Coast redwood “Sequoia sempervirens”
DBH = (multi 33” & 7”) -------- Height = 55 ft. ------- Spread = 27 ft. -------- condition = Good
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 4
North
List Inventory
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 5
Site Plan With Trees
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 6
Site Plan With Trees
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 7
Trees # 1 (facing south)
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 8
Tree # 1 Holly oak (24” public tree)
Trees # 1 & 2 (facing west)
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 9
Tree # 2 Holly oak (16” public tree)
Tree # 1 Holly oak (24” public tree)
Tree # 3 (facing east)
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 10
Tree # 3 Blue atlas cedar (37”)
Tree # 4 (facing west)
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 11
Tree # 4 Canary island pine (37”)
Trees # 5 thru 7 (facing south)
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 12
Trees # 8 & 9 (facing southeast)
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 13
Tree # 8 Canary
island pine (23”)
Tree # 9 Canary
island pine (25”)
Tree # 10 (facing east)
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 14
Tree # 10 Canary
island pine (22”)
General Tree Protection Guidelines
1) Avoid damaging the roots, stem, and branches with mechanical and manual equipment.
2) Avoid soil compaction by prohibiting the use of heavy equipment such as backhoes and bobcats under the
tree drip line.
3) Do not store or park tools, equipment, vehicles, or chemicals under the tree drip line.
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.
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.
7) Place a protective barrier or temporary fencing around as much of the drip line of the tree trunk as
possible while allowing for the proposed work to be done. Protection fencing shall be 4 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 immediately and shall only be removed when all
heavy equipment such as back-hoes, bobcats, and loaders 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.
8) 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.
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 15
Site Plan With Demolition And Protection Fencing
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 16
Tree # 1“Holly oak”
a) Structural excavation and over-excavation: The distance from the trunk of this Oak tree to the
nearest proposed foundation of the proposed home, driveway, and garage that at these distances the
impact of the excavations will not affect the tree.
b) New Landscaping: Tilling and soil preparation within 12 ft. of this tree shall be done manually with
care to preserve the roots.
c) New Sprinklers: No broadcast trenching shall be allowed within 12 ft. of all sides of the tree trunk.
Alternatives can sometimes be accomplished by radial trenching, Tunneling under roots, and above
ground drip systems.
d) Canopy pruning: No pruning will be required to complete the proposed construction project.
e) Root pruning: No important roots from this tree are expected to be impacted by this project
f) Maintenance: During the hot summer months the tree shall be watered as needed until the sprinkler
system is installed and working. The watering’s shall consist of weekly deep soakings during the
months of July through September and then as needed depending on weather and rainfall. A
combination of soaker hoses within the 15 ft. radius of the tree trunk is recommended or as close as
possible to this to ensure adequate coverage. The soaker lines shall be placed 12 inches apart from
each other within the 12 ft., radius.
g) Encroachment impacts: This project is expected to have a minor 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.
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 17
Tree # 2“Holly oak”
a) Structural excavation and over-excavation: The distance from the trunk of this Oak tree to the nearest
proposed foundation of the proposed home, driveway, and garage that at these distances the impact of
the excavations will not affect the tree.
b) Concrete driveway: The distance from the Edge of the tree trunk to the edge of the concrete driveway
shall be no closer than 6 ft. with an over-excavation for the driveway of no more than 1 ft. At this
distance which is equal to 4.5 times the diameter of the tree trunk and with a minimal over-excavation
for the driveway the impact to this Oak tree is expected to be minimal to moderate.
c) New Landscaping: Tilling and soil preparation within 12 ft. of this tree shall be done manually with care
to preserve the roots.
d) New Sprinklers: No broadcast trenching shall be allowed within 12 ft. of all sides of the tree trunk.
Alternatives can sometimes be accomplished by radial trenching, Tunneling under roots, and above
ground drip systems.
e) Canopy pruning: No pruning will be required to complete the proposed construction project.
f) Root pruning: The east edge of the excavation for the driveway within 15 ft. of the tree trunk shall be
done manually. Roots shall be cleanly cut vertically with a sharp tool that will not tear or pull roots out
of the ground. Avoid Bob Cats, and Backhoes for this task as they can cause serious damage to roots
g) Maintenance: During the hot summer months the tree shall be watered as needed until the sprinkler
system is installed and working. The watering’s shall consist of weekly deep soakings during the months
of July through September and then as needed depending on weather and rainfall. A combination of
soaker hoses within the 15 ft. radius of the tree trunk is recommended or as close as possible to this to
ensure adequate coverage. The soaker lines shall be placed 12 inches apart from each other within the
12 ft., radius.
h) Encroachment impacts: This project is expected to have a minor 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
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 18
Tree # 3“Deodar cedar”
a) Structural excavation and over-excavation: The distance from the trunk of this Oak tree to the
nearest proposed foundation of the proposed home, driveway, and garage that at these distances the
impact of the excavations will not affect the tree.
b) Driveway: The proposed new driveway will come within 6 ft. of the tree trunk of this tree. The
excavation for the driveway shall be performed with care to prevent removing more soil than is
absolutely necessary and to avoid tearing roots during the digging. All digging within 15 ft of the trunk
shall be done manually with hand tools.
c) New Landscaping: Tilling and soil preparation within 12 ft. of these trees shall be done manually with
care to preserve the roots.
d) New Sprinklers: No broadcast trenching shall be allowed within 12 ft. of all sides of the tree trunk.
Alternatives can sometimes be accomplished by radial trenching, Tunneling under roots, and above
ground drip systems.
e) Canopy pruning: No pruning will be required to complete the proposed construction project.
f) Root pruning: Pruning of roots for the driveway shall be performed with sharp tools that will make a
clean vertical cut.
g) Maintenance: During the hot summer months the tree shall be watered as needed until the sprinkler
system is installed and working. The watering’s shall consist of weekly deep soakings during the
months of July through September and then as needed depending on weather and rainfall. A
combination of soaker hoses within the 15 ft. radius of the tree trunk is recommended or as close as
possible to this to ensure adequate coverage. The soaker lines shall be placed 12 inches apart from
each other within the 12 ft., radius.
h) Encroachment impacts: This project is expected to have a minor 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.
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 19
Tree # 4 “Canary island pine”
a) Structural excavation and over-excavation: The distance from the trunk of these tree to the nearest
proposed foundation of the proposed house is approximately 7.5 ft. and 2.5 ft. from the proposed
concrete walkway. The proposed structural excavation for the house does not cross the entire plane of
the tree drip line. It is proposed to 7.5 ft. northeast of the tree trunk then diverts east away from the
tree. The excavation for the walkway shall be minimal to no more than 4 inches deep. There is a large
area adjacent to this tree that will be mulched garden planter and lawn.
b) New Landscaping: Tilling and soil preparation within 12 ft. of these trees shall be done manually with
care to preserve the roots.
c) New Sprinklers: No broadcast trenching shall be allowed within 12 ft. of all sides of the tree trunk.
Alternatives can sometimes be accomplished by radial trenching, Tunneling under roots, and above
ground drip systems.
d) Canopy pruning: No pruning will be required to complete the proposed construction project.
e) Root pruning: Excavations for the house foundation and walkway and spa beyond 7 ft. Can be severed
with a vertical cut that is made with a sharp tool such as hand pruners, hand saws, loppers, or
reciprocating power saw.
f) Maintenance: During the hot summer months the trees shall be watered as needed until the sprinkler
system is installed and working. The watering’s shall consist of weekly deep soakings. A combination of
soaker hoses within the 12 ft. radius of the tree trunk is recommended or as close as possible to this to
ensure adequate coverage. The soaker lines shall be placed 12 inches apart from each other within the
12 ft., radius.
g) 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. The new landscaping and irrigation system is expected
to help maintain or improve the current health of this Pine tree. The severed roots by the pool are not
expected to damage the pool as they are not very aggressive rooting trees and are not known to
push and damage foundations.
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 20
Tree # 5 “Canary island pine”
a) Structural excavation and over-excavation: The distance from the trunk of these tree to the nearest
proposed foundation of the proposed pool is approximately 13 ft. and 6.5 ft. from the proposed
concrete walkway. The proposed excavation for the pool does not cross the entire plane of the tree
drip line. It is proposed to 13.5 ft. northeast of the tree trunk then diverts east away from the tree. The
excavation for the walkway shall be minimal to no more than 4 inches deep. There is a large area
adjacent to this tree that will be mulched garden planter and lawn.
b) New Landscaping: Tilling and soil preparation within 12 ft. of these trees shall be done manually with
care to preserve the roots.
c) New Sprinklers: No broadcast trenching shall be allowed within 12 ft. of all sides of the tree trunk.
Alternatives can sometimes be accomplished by radial trenching, Tunneling under roots, and above
ground drip systems.
d) Canopy pruning: No pruning will be required to complete the proposed construction project.
e) Root pruning: Excavations for the pool foundation, walkway, and spa beyond 13 ft. Can be severed
with a vertical cut that is made with a sharp tool such as hand pruners, hand saws, loppers, or
reciprocating power saw.
f) Maintenance: During the hot summer months the trees shall be watered as needed until the sprinkler
system is installed and working. The watering’s shall consist of weekly deep soakings. A combination of
soaker hoses within the 12 ft. radius of the tree trunk is recommended or as close as possible to this to
ensure adequate coverage. The soaker lines shall be placed 12 inches apart from each other within the
12 ft., radius.
g) 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. The new landscaping and irrigation system is expected
to help maintain or improve the current health of this Pine tree. The severed roots by the pool are not
expected to damage the pool as they are not very aggressive rooting trees and are not known to
push and damage foundations.
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 21
Trees # 6 thru 8 “Canary island pines”
a) Structural excavation and over-excavation: The distance from the trunk of these tree to the nearest
proposed foundation of the proposed pool is approximately 10.5 ft. and 5.5 ft. from the proposed
concrete walkway and spa. The proposed excavation for the pool crosses the entire plane of the trees
but it is expected to have minimal to moderate impact because the spa and concrete walkway will not
require a standard foundation because they are at a higher elevation than the swimming pool depth.
b) New Landscaping: Tilling and soil preparation within 12 ft. of these trees shall be done manually with
care to preserve the roots.
c) New Sprinklers: No broadcast trenching shall be allowed within 12 ft. of all sides of the tree trunk.
Alternatives can sometimes be accomplished by radial trenching, Tunneling under roots, and above
ground drip systems.
d) Canopy pruning: No pruning will be required to complete the proposed construction project.
e) Root pruning: Excavations for the pool foundation, walkway, and spa beyond 10.5 ft. Can be severed
with a vertical cut that is made with a sharp tool such as hand pruners, hand saws, loppers, or
reciprocating power saw.
f) Maintenance: During the hot summer months the trees shall be watered as needed until the sprinkler
system is installed and working. The watering’s shall consist of weekly deep soakings. A combination of
soaker hoses within the 12 ft. radius of the tree trunk is recommended or as close as possible to this to
ensure adequate coverage. The soaker lines shall be placed 12 inches apart from each other within the
12 ft., radius.
g) Encroachment impacts: This project is expected to have a minimal to moderate impact on the short or
long term health of these trees and they are expected to survive in good health if the protection
recommendations are followed and adhered to. The new landscaping and irrigation system is expected
to help maintain or improve the current health of these Pine trees. The severed roots by the pool are
not expected to damage the pool as they are not very aggressive rooting trees and are not known to
push and damage foundations.
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 22
Trees # 9 & 10 “Canary island pines”
a) Structural excavation and over-excavation: The distance from the trunk of these tree to the nearest
proposed foundation of the proposed pool is more than 17 ft. and more than 12 ft. from the proposed
concrete walkway and. The proposed excavation for the pool and concrete walkway is expected to
have zero impact on these two Pine trees.
b) New Landscaping: Tilling and soil preparation within 12 ft. of these trees shall be done manually with
care to preserve the roots.
c) New Sprinklers: No broadcast trenching shall be allowed within 12 ft. of all sides of the tree trunk.
Alternatives can sometimes be accomplished by radial trenching, Tunneling under roots, and above
ground drip systems.
d) Canopy pruning: No pruning will be required to complete the proposed construction project.
e) Root pruning: Excavations for the pool foundation, walkway, and spa beyond 12 ft. Can be severed
with a vertical cut that is made with a sharp tool such as hand pruners, hand saws, loppers, or
reciprocating power saw.
f) Maintenance: During the hot summer months the trees shall be watered as needed until the sprinkler
system is installed and working. The watering’s shall consist of weekly deep soakings. A combination of
soaker hoses within the 12 ft. radius of the tree trunk is recommended or as close as possible to this to
ensure adequate coverage. The soaker lines shall be placed 12 inches apart from each other within the
12 ft., radius.
g) Encroachment impacts: This project is expected to have zero impact on the short or long term health
of these trees and they are expected to survive in good health if the protection recommendations are
followed and adhered to. The new landscaping and irrigation system is expected to help maintain or
improve the current health of these Pine trees. The severed roots by the pool are not expected to
damage the pool as they are not very aggressive rooting trees and are not known to push and
damage foundations.
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 23
Certificate of Performance & Arborists Disclosure Statement
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 an y
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 c ircumstances, 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.
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 24
Kenny Yu 220 W Naomi Ave Arcadia, CA 91007 November 10, 2018
Javier Cabral / Consulting Arborist Pg. # 25