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Arborist Report of Trees
615 E Wistaria, Arcadia CA 91006
Prepared For:
Zonel Pascasio & Garo Artinian
April 26th, 2026
818 822 4010 (Artinian)
626 354 9876 (Pascasio)
g.artinian@aol.com
tony_pascasio@yahoo.com
Prepared By:
Killian Vendler, Consulting Arborist & Pest Control Advisor
International Society of Arboriculture # WE–14059A
Department of Pesticide Regulation PCA License #147436
Registered Consulting Arborist #889
(213) 219-3033
office@calecoarborists.com
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
1
Table of Contents
Assessment Summary....................................................................................................................................2
Project Overview............................................................................................................................................3
Site Conditions...............................................................................................................................................4
Figures, Tables & Attachments......................................................................................................................5
Figure 1: Satellite Map...................................................................................................................................6
Figure 2: Road Map........................................................................................................................................7
Figure 3: Site Plan..........................................................................................................................................8
Figure 4: Replacement Plan...........................................................................................................................9
Proposed Action...........................................................................................................................................10
Tree Assessment...........................................................................................................................................11
Table 1: Tree Assessment.............................................................................................................................12
Tree Images..................................................................................................................................................14
Potential Project Impacts..............................................................................................................................18
Best Management Practices (BMPs)............................................................................................................19
Conclusion....................................................................................................................................................20
Arborist Signature Page...............................................................................................................................21
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
2
Assessment Summary
Dear Zonel Pascasio & Garo Artinian,
You have retained my consulting arborist services to provide a tree inventory and assessment report for
the property located at 615 E Wistaria, in support of your proposed single-family home renovation.
A site visit was conducted on April 25th, 2026, under clear weather with light cloud cover. The subject
parcel contains 2 Trees. All trees were measured using a standard diameter tape, and the entire site and
surrounding areas were visually inspected and analyzed.
Of the 2 trees on site, 1 tree is classified under the Arcadia Municipal Code, City of Arcadia,
California, and 1 Tree is a non protected fruit bearing tree. Based on the proposed development footprint
and required clearances, 1 protected tree must be removed. This triggers the City’s 2:1 replacement
ratio, resulting in two required 24’ box replacement trees of any of any of following trees
● Coast Live Oak
● Western Sycamore
● California Bay Laurel
● Southern Magnolia
● Chinese Elm
● Crape Myrtle
This report documents the condition, species, measurements, and construction-related impacts for all
relevant trees and provides the required compliance materials for Ordinance No. 2338. Protected species
under the ordinance include:
⦁ California native oaks (Quercus spp.)
⦁ Western sycamore (Platanus racemosa)
⦁ Mature conifers (case dependent)
⦁ Magnolia grandiflora
Detailed findings for each tree are provided in the Tree Assessment section of this report.
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
3
Project Overview
Zonel Pascasio & Garo Artinian, requested the following arboricultural services:
1. Identify all trees on the property and label them on the provided architectural drawings.
2. Evaluate current tree health and assess potential construction impacts according to the site plan.
3. Determine whether a tree protection plan is feasible for long-term retention of specific trees.
4. Evaluate the impacts and justification for proposed removals.
5. Provide justifications for the removal of protected trees where applicable.
6. Produce all compliance documentation required under the City’s Protected Tree Ordinance.
7. Deliver a formal written report with maps, photos, and required professional certifications.
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
4
Site Conditions
⦁ The project site consists of a 7,637 sq. ft. parcel with a mix of protected and non-protected
volunteer trees.
⦁ Two (2) trees were located on the subject property.
‒ One (1) is protected.
‒ One (1) is a non-protected fruit bearing tree.
⦁ The lot is flat, with street access at the front property boundary.
⦁ All trees were visually assessed for health, structure, and potential construction impacts.
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
5
Figures, Tables & Attachments
Figures
⦁ Figure 1: Google Earth Image
⦁ Figure 2: Map
⦁ Figure 3: Site Plan
⦁ Figure 4: Replacement Plan
Tables
⦁ Table 1: Tree Assessment
Additional Documentation
⦁ Tree Photos (3 total)
Attachments
⦁ Site Plan
⦁ Topographical Survey
⦁ Letter of Determination
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
6
Figure 1: Satellite Map
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
7
Figure 2: Road Map
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
8
Figure 3: Site Plan
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
9
Figure 4: Replacement Plan
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
10
Proposed Action
The proposed development involves constructing a new single-family residence on the front portion of the
property. Please refer to the Architectural Site Plan (Attachment 1) for the complete layout and
structural details. There are no known easements affecting the site.
Based on the required building footprint, driveway access, and code-required egress pathways, One
protected tree must be removed. Removal of protected trees triggers the City’s 2:1 replacement
requirement, resulting in Two (2) replacement trees to be installed on-site.
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
11
Tree Assessment
This assessment is based on my site visit on April 25th, 2026, during which all trees were visually evaluated and
measured using a diameter tape. Weather conditions were clear with light cloud cover. For clarity, all on-site trees
are referenced as Trees #1–2.
Overall, most trees appear to be in fair to good condition with no significant structural defects, except for Trees #1,
which ongoing root pressure from the tree was directly contributing to damage of the retaining wall; due to the
progressive nature of the impact and lack of a feasible long-term alternative, removal was necessary. A summary of
required removals is provided below:
● Trees #1: The tree’s root system was causing structural damage to the retaining wall, and removal was
determined to be necessary to prevent continued deterioration and potential failure.
● Tree #2: This tree is protected under City of Arcadia, Ordinance No. 2338, due to it being above the 12”
DBH threshold for single stem trees. The tree directly conflicted with the proposed site plan. Removal was
deemed necessary, triggering the City’s 2:1 replacement requirement.
Required replacement ratios and mitigation measures are addressed elsewhere in the report.
Below are the revised, polished descriptions for each tree:
⦁ Tree #1
Persea americana–Avocado
Height: 45 ft | Spread: 40 ft
Remarks: Multi-stem, total DBH 25". Health was good. This tree was not protected. This tree was
removed due to the tree’s root system causing ongoing structural damage to the supporting retaining wall.
Removal was necessary as no feasible alternative existed to prevent continued damage.
⦁ Tree #2
Magnolia grandiflora–Southern Magnolia
Height: 55 ft | Spread: 35 ft
Remarks: Multi-stem, total DBH 23". Health was good. This Tree was a protected tree. It was removed as
it conflicted directly with proposed construction. The owner will voluntarily replant at a 2:1 ratio
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
12
Table 1: Tree Assessment
Tree No. Common
Name
Botanical
Name DBH height spread
Health
Condition
rating
Protection
Status
Remove/
Preserve
1 Avocado Persea
americana 25″ 45′ 40′ B No Remove
2 Southern
Magnolia
Magnolia
grandiflora 23″ 55′ 35′ B Yes Remove
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
13
Tree Condition Rating Descriptions:
A) Healthy, vigorous tree, reasonably free of disease, with good structure and form typical of the
species.
B) A tree with a slight decline in vigor, a small amount of twig dieback, and minor structural defects
that could be corrected.
C) A tree with moderate vigor, moderate twig and small branch dieback, thinning crown, poor leaf
color, and moderate structural defects that could be mitigated.
D) A tree in decline, with epicormic growth, extensive dieback of medium to large branches, and
significant structural defects that cannot be abated.
E) A tree in severe decline, dieback of scaffold branches and or trunk, mostly epicormic growth,
extensive structural defects that cannot be abated.
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
14
Tree Images
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
15
Tree #1 – Persea americana–Avocado
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
16
Tree #1 – Persea americana–Avocado
Damage to Wall
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
17
Tree #2 – Magnolia grandiflora–Southern Magnolia
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
18
Potential Project Impacts
The proposed development will require the removal of one protected tree, which will be replaced in
accordance with the City’s 2:1 replacement ratio. Construction activity will involve trucks and
equipment accessing the site, which may create temporary traffic flow limitations along E Wistaria Avenue.
To prevent avoidable damage to trees that will remain on site, no construction materials, soil, debris,
equipment, or waste should be stored, placed, or staged within the dripline of any retained tree. All
construction activities conducted near trees should be supervised by, or performed under the guidance of,
an ISA Certified Arborist or ISA Certified Tree Worker.
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
19
Best Management Practices (BMPs)
All trees designated to remain are at least five or more feet away from proposed construction. Therefore, a
complete Tree Protection Plan is not required because the trees will not be affected; however, the
following BMPs must be followed to ensure no inadvertent damage occurs:
● Construction crews must be instructed not to place materials, tools, soil, trash, or equipment at
the base of any tree.
● The surrounding drip line of the tree should be avoided. This is to prevent the placement of
heavy machinery or tools that may damage the trunk or roots of the tree.
● No grading, trenching, excavation, or soil compaction should occur within the tree protection area.
● All pruning, if needed, must be performed by ISA Certified Tree Workers following ANSI A300
pruning standards.
● An ISA Certified Arborist should monitor any work occurring within proximity to a tree’s
dripline.
These measures will help maintain tree health and structural integrity throughout the construction process.
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
20
Conclusion
You have retained my consulting arborist services to provide a tree inventory and assessment report for
the property located at 615 E Wistaria, Arcadia CA 91006, in support of the proposed construction of a
new single-family renovation.
During my site visit on April 25th, 2026, I evaluated the existing trees and documented all relevant
health, structural, and species information. The subject property contained one protected ornamental
tree and one non-protected fruit bearing tree. Based on the project footprint and required access routes,
One protected tree is proposed for removal and replacement.
To ensure the trees' long-term health and structural stability, I recommend implementing protective
measures to prevent soil compaction, mechanical damage, and root disturbance, particularly during
excavation, material staging, and equipment movement. The protected trees designated for removal
should be replaced at the City’s required 2:1 ratio, which is feasible given the available area in the front
yard.
With appropriate adherence to protection guidelines and industry best practices, the remaining trees can
be successfully preserved throughout the construction process and beyond.
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
21
Arborist Signature Page
I, Killian Vendler, 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 assumes 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 arborist's
recommendations or seek additional advice if they disagree with the Arborist's findings or
recommendations.
⦁ The Arborist has no past, present, or future interest in removing or preserving any tree. The
opinions in the Arborist report are the Arborist's independent and objective judgments.
⦁ The arborist's findings, opinions, and recommendations are 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, site monitoring, further documentation for
changes beyond the Arborist's control, or attend any deposition or meeting without contractual
arrangements that include additional fees for the Arborist.
⦁ The Arborist assumes no responsibility for verifying ownership or the location of property lines
or for any recommendations based on inaccurate information.
⦁ This Arborist report may not be reproduced without the expressed written permission of the
Arborist and the client to whom the report was provided. Any changes or alterations to this report
invalidate the entire report.
⦁ Arborists are tree specialists who use their education, knowledge, training, and experience to
examine trees, recommend measures to enhance their beauty and health, 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 arborist's recommendations or seek additional
advice.
⦁ Arborists cannot detect every condition that could lead to a tree's structural failure. 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
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist
22
circumstances or for a specified period. 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 service, 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 them. 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 risks associated with trees is to eliminate all trees.
Thank you for choosing my company! Feel free to contact me with any questions or concerns.
Best Regards,
Killian Vendler / Consulting Arborist
4219 E. 1st St., Los Angeles, CA 90063
International Society of
Arboriculture #WE–14059A
Department of Pesticide Regulation
PCA License #147436
Registered Consulting Arborist #889
Zonel Pascasio & Garo Artinian
615 E Wistaria,
Arcadia CA 91006
April 25th, 2026
Killian Vendler | Consulting Arborist