HomeMy WebLinkAboutArborist Report
643 Hampton Rd. Arcadia, CA 91006
Prepared for:
Eric Tsang Architects
440 E Huntington Dr. Suite 356
Arcadia, CA 91006
February 25, 2022
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
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
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 & 6
Site Plan With Trees------------------------------------------------------ pg. 7 thru 9
Tree Pictures -------------------------------------------------------------- pg. 10 thru 20
Tree Protection Plan ----------------------------------------------------- pg. 21 thru 25
Arborist Signature Page ------------------------------------------------- pg. 26
Certificate Of Performance --------------------------------------------- pg. 27
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 2
Summary
Mr. Tsang,
You have retained my consulting arborist services to provide a tree inventory and tree protection plan
for the property described as 643 Hampton Rd. Arcadia CA 91006. You are in the planning and permitting
stages of demolishing the existing house and building a new 1 story single family house.
Background and assignment
Mr. Tsang has requested that I provide the following arboricultural services.
1) Identify all trees on the property and label them on the architectural drawings as provided to the
arborist by Mr. Eric Tsang.
2) Evaluate the current health of the trees and make recommendations based on their health
3) Provide a protection plan for all protected trees.
The following report is based on my site visit on February 21, 2022 and my analysis of the trees, site
plan, and the surrounding landscape. For the purpose of this report I will address these trees as Trees # 1
thru 20.
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 3
Site conditions
A one-story single-family home currently exists on this property located 643 Hampton Rd. Arcadia CA 91006.
There is a total of (20) trees on site, of which (3) are protected by the City of Arcadia Tree Protection Ordinance.
No off-site trees are proposed to be removed for this project and all trees are expected to survive in good health.
Google Earth Image
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 4
A) - Healthy, vigorous tree, reasonably free of disease, with good structure and form typical of the species.
B) - A tree with slight decline in vigor, small amount of twig dieback, minor structural defects that could be corrected.
C) - A tree with moderate vigor, moderate twig and small branch dieback, thinning crown, poor leaf color, moderate
structural defects that might be mitigated.
D) – A tree in decline, epicormics growth, extensive dieback of medium to large branches, significant structural defects th at
cannot be abated.
F) – A tree in severe decline, dieback of scaffold branches and or trunk, mostly epicormics growth, extensive structural
defects that cannot be abated.
List Inventory Pg. 1
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 5
List Inventory Pg. 2
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 6
Site Plan With All Trees (full scale)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 7
Site Plan With All Trees (cropped)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 8
Site Plan With Protected Trees Only (cropped)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 9
Trees # 1 (facing south)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 10
# 1 Betula pendula
Tree # 2 (facing north)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 11
# 2 Deodar cedar
Trees # 3 & 4 (facing north)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 12
# 3 Avocado # 4 Avocado
Tree # 5 (facing northeast)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 13
# 5 Avocado
Trees # 6 & 7 (facing southeast)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 14
# 7 Southern
magnolia
# 6 Crape myrtle
Tree # 8 (facing east)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 15
# 8 Pineapple guava
Trees # 9 thru 12 (facing south)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 16
Trees # 13 & 14 (facing east)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 17
# 13 Mexican fan
palm
# 14 Mexican
fan palm
Trees # 15 thru 17 (facing east)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 18
# 15 Umbrella
tree
# 16 Umbrella
tree
# 17 Banana
Trees # 18 & 19 (facing north)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 19
# 18 Victorian
box
# 19 Avocado
Tree # 20 (facing north)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 20
# 20 Carolina
cherry
General Tree Protection Guidelines
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. 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.
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 21
8) 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.
9) 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.
10) All protected trees shall be watered before, during, and after construction as needed to prevent drought
stress and tree death until sprinklers have been installed and are functional.
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 22
Site Plan With Protection Instructions (cropped)
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 23
Tree # 2 (Protection Details)
a) Structural excavation and over-excavation: No structural foundations for the home are proposed near the
drip line off this tree. This protected tree is located in a raised planter between the existing driveway and
north property line. The existing retaining wall is proposed to remain, and no grading is proposed for the
area in the raised planter drip line of this tree. The impact is expected to be zero.
b) New driveway: The proposed new driveway is on the opposite side of the property and impact is expected
to be zero.
c) New Landscaping: No plants shall be planted within 5 ft. of the trunk of this tree and any plants shall be
relocated if a root greater than 4 inches must be severed for the planting hole. Mulch shall be kept a
minimum of 6 inches from the tree trunks on all sides of this tree.
d) New Sprinklers: No broadcast trenching for underground irrigation shall be done within 10 ft. of the trunk
of this tree.
e) Canopy pruning: No pruning will be required to complete the proposed construction project.
f) Root pruning: Plants shall be relocated if a root greater than 4 inches must be severed for the planting hole
within 10 ft. of the tree trunk. Beyond 10 ft. from the tree trunk roots can be severed with a clean vertical
cut with a sharp tool only if necessary
g) Protection Fencing: No protection fencing shall be required because there is no grading proposed in the
raised planter and landscaping is minimal and will be performed manually.
h) Maintenance: During the hot summer months these trees shall be watered as needed until the sprinkler
system is installed and working.
i) Encroachment impacts: This project is expected to have zero to minimal impact on the short or long-term
health of this tree, and it is expected to survive in its existing health if the protection recommendations are
followed and adhered to. Minimal impact means that no roots greater than two inches are expected to be
impacted and minimal to no interruption to water uptake or nutrient production, transportation, and
storage is expected. Tree stability, tree anchorage, trunk health, branches, and leaves are not expected to
be impacted. This tree is expected to survive in its current health.
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 24
Tree # 20 (Protection Details)
a) Structural excavation and over-excavation: No structural foundations for the home are proposed near the
drip line off this tree. This protected tree is located in a raised planter between the existing driveway and
north property line. The existing retaining wall is proposed to remain, and no grading is proposed for the
area in the raised planter drip line of this tree. The impact is expected to be zero.
b) New driveway: The proposed new driveway is on the opposite side of the property and impact is expected
to be zero.
c) New Landscaping: No plants shall be planted within 3 ft. of the trunk of this tree and any plants shall be
relocated if a root greater than 4 inches must be severed for the planting hole. Mulch shall be kept a
minimum of 6 inches from the tree trunks on all sides of this tree. The uncompacted pea gravel is not
expected to have any impact to this tree.
d) New Sprinklers: No broadcast trenching for underground irrigation shall be done within 5 ft. of the trunk of
this tree.
e) Canopy pruning: No pruning will be required to complete the proposed construction project.
f) Root pruning: Plants shall be relocated if a root greater than 2 inches must be severed for the planting hole
within 3 ft. of the tree trunk. Beyond 10 ft. from the tree trunk roots can be severed with a clean vertical
cut with a sharp tool only if necessary
g) Protection Fencing: No protection fencing shall be required because there is no grading proposed in the
raised planter and landscaping is minimal and will be performed manually.
h) Maintenance: During the hot summer months these trees shall be watered as needed until the sprinkler
system is installed and working.
i) Encroachment impacts: This project is expected to have zero to minimal impact on the short or long-term
health of this tree, and it is expected to survive in its existing health if the protection recommendations are
followed and adhered to. Minimal impact means that no roots greater than two inches are expected to be
impacted and minimal to no interruption to water uptake or nutrient production, transportation, and
storage is expected. Tree stability, tree anchorage, trunk health, branches, and leaves are not expected to
be impacted. This tree is expected to survive in its current health.
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 25
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 26
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 st ructural 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 th e
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.
Eric Tsang 643 Hampton Rd. Arcadia, CA 91006 February 25, 2022
Javier Cabral / Consulting Arborist Pg. # 27