Exhibit 13 - Final Arborist’s Report ARBORIST REPORT
Los Gatos Mixed Use
151 E. Main St.
Los Gatos, CA 95030
December 20, 2023; updated October 15, 2024
Calyx Tree + Landscape Consulting
221 Main St. #83 Los Altos CA 94023
650.935.5822
Prepared for:
The Guzzardo Partnership, Inc.
Pier 9, The Embarcadero, Suite 115
San Francisco, CA 94111
Prepared by: Deanne Ecklund (Goff), ASCA Registered Consulting Arborist #647
24, 2024
EXHIBIT 13
Calyx Tree + Landscape Consulting, LLC
decklund.arborist@gmail.com 650.935.5822 1
Summary
The inventory contains 10 trees comprised of 5 species. Five of these
were street trees.
The following plan was reviewed to evaluate impacts to trees:
•L1.0 Landscape Plan (The Guzzardo Partnership 1/14/24).
•Civil plans (Sandis 8/16/24)
Two street trees #170 and #176 would be preserved. The remaining
trees would be removed to accommodate development.
Introduction
Assignment
Provide an inventory and assessment of the trees located at 151 E.
Main St. in Los Gatos, CA. The assessment shall include the species,
size (trunk diameter), condition (health, structure, form), and
suitability for preservation ratings. Prepare a report with tree
preservation guidelines.
Limits of the Assignment
1.Information in this report is limited to the condition of trees
during my tree assessment on December 8, 2023.
2.Tree risk assessments were not performed.
3.Landscape plans were available for review.
Assessment Methods
Trees were numbered #170-179. The assessment included all trees
within and immediately adjacent to development area.
Tree condition was based on three components: health, structure,
and form. The assessment considered both the health and structure
for a combined condition rating (Guide for Plant Appraisal, 10th Ed.
ISA 2019).
5 (81-100%) - Excellent = High vigor, nearly ideal and free of
defects.
4 (61-80%) - Good = Normal vigor, well-developed structure. No
significant insect or disease damage. Defects are minor and can
be corrected. Function and aesthetics not compromised.
3 (41-60 %) - Fair = Reduced vigor, damage, dieback, or pest
problems, at least one significant structural problem or multiple
moderate defects requiring treatment. Major asymmetry or
deviation from the species normal habit, function and aesthetics
compromised.
2 (21-40%) - Poor = Unhealthy and declining appearance with
poor vigor, abnormal foliar color, size or density with potential
irreversible decline. One serious structural defect or multiple
(The Civil Engineer's plans were also reviewed to evaluate tree impacts.)
Los Gatos Mixed Use Arborist Report December 20, 2023; updated October 24, 2024
Calyx Tree + Landscape Consulting, LLC
decklund.arborist@gmail.com 650.935.5822
2
significant defects that cannot be corrected and failure may occur
at any time. Significant asymmetry and compromised aesthetics
and intended use.
1 (6-20%) - Very Poor = Poor vigor, dying with little live foliage.
Tree in irreversible decline. Severe defects with the likelihood of
failure being probable or imminent. Aesthetically poor with little
or no function in the landscape.
0 (0-5%) - Dead/Unstable = Dead or failure imminent.
A tree’s suitability for preservation considers its health, structure, age,
species characteristics (e.g. disease resistance, drought tolerance),
species tolerances to root disturbance and other construction
impacts, species invasiveness, and its potential to continue to benefit
the site. Trees were rated either “high” “moderate” or “low”
suitability for preservation.
High = Trees with good vigor, structural stability, and potential to
function well long after construction.
Moderate = Trees with fair vigor, and with health or structural
defects that can be mitigated with treatment. These trees will
require more management and monitoring before, during, and
after construction, and may have shorter life spans after
development.
Low = Trees are expected to decline during or after construction
regardless of management. The species or individual tree may
possess characteristics that are incompatible or undesirable in
landscape settings or unsuited for the intended use of the site.
Appraisal of value
The reproduction value of trees was determined by using the Trunk
Formula Technique methodology described in the Guide for Plant
Appraisal, Tenth Edition.
Los Gatos Mixed Use Arborist Report December 20, 2023; updated October 24, 2024
Calyx Tree + Landscape Consulting, LLC
decklund.arborist@gmail.com 650.935.5822
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Observations
Ten (10) trees were measured and evaluated. Most trees were in poor
and fair condition (Table 1), with varying degrees of crown dieback.
Table 1. Tree species condition + quantity
Species
name Scientific name Poor
(1-2)
Fair
(3)
Good
(4-5) Total
Crape myrtle Lagerstroemia indica - - 1 1
Glossy privet Ligustrum lucidum 1 1 - 2
Southern
magnolia
Magnollia
grandiflora 3 1 - 4
Callery pear Pyrus calleryana 1 1 - 2
Coast live oak Quercus agrifolia - - 1 1
Total 5 3 2 10 50% 30% 20%
A semi-mature coast live oak (#174) was in good condition. Soil level
in its planter was approximately 2’ above sidewalk grade.
Two evergreen pears were in fair and poor condition. Both had been
previously topped and had many small branches (epicormic shoots)
emerging from pruned ends. If left unmanaged, these shoots can
become susceptible to failure.
Southern magnolia street trees were in poor to fair condition. All
three trees had significant trunk wounds on their southwest sides
caused by sunburn.
Town of Los Gatos Tree Protection Ordinance
The Town of Los Gatos municipal code (Chapter 29, Sec. 29.10.0960)
Protected Tree definition includes the following description.
(4) All trees which have a four-inch or greater diameter
(twelve and one half-inch circumference) of any trunk,
when removal relates to any review for which zoning
approval or subdivision approval is required.
Based on trunk size, all 10 trees evaluated for this report were
considered Protected, and a permit is required for the removal of any
Protected tree.
Los Gatos Mixed Use Arborist Report December 20, 2023; updated October 24, 2024
Calyx Tree + Landscape Consulting, LLC
decklund.arborist@gmail.com 650.935.5822
4
Discussion and Recommendations
I reviewed the Landscape Plan sheet L1.0 (The Guzzardo Partnership
1/14/24) and Civil Plan Set (Sandis 8/16/24) to evaluate tree impacts.
The design requires that three on-site trees must be removed. Three
street trees in poor condition will be removed and replaced. Street
trees #170 and 176, which is outside development area, will be
preserved and protected.
Street tree #170 is expected to incur root impacts from sidewalk
replacement. The tree is relatively young and the species tolerant of
root impacts from construction. The following tree protection
measures shall be employed to protect the tree in place.
• Type III tree protection shall be used to protect the trunk of
tree #170.
• Type I tree protection shall be used to protect trees #177 and
178.
• Existing sidewalk shall be removed in a manner that avoids
damaging roots.
• Any roots requiring pruning for sidewalk forms shall be cut
cleanly at the edge of excavation.
Adhering to these and the tree preservation guidelines in the next
section will ensure root impacts are kept to a minimum.
A total of six trees will be removed for development, six of which
require mitigation.
Tree removal and mitigation
The Table 2 indicates the recommended replacement values. The
applicant will be required to replace 6 protected trees according to
the ordinance. Alternatively, it may be possible to create an
approved landscape plan or provide an in-lieu payment.
Table 2. Town of Los Gatos tree canopy replacement standard
Canopy Size of
Removed Tree
Replacement Requirement
(2)(4)
10 feet or less Two 24-inch box trees
More than 10 feet to 25
feet Three 24-inch box trees
More than 25 feet to 40
feet
Four 24-inch box trees; or
Two 36-inch box trees
More than 40 feet to 55
feet
Six 24-inch box trees; or
Three 36-inch box trees
Greater than 55 feet Ten 24-inch box trees; or
Five 36-inch box trees
The Landscape plan sheets and the Civil Engineer's plans were
reviewed to evaluate tree impacts.
Los Gatos Mixed Use Arborist Report December 20, 2023; updated October 24, 2024
Calyx Tree + Landscape Consulting, LLC
decklund.arborist@gmail.com 650.935.5822
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(2) Often, it is not possible to replace a single large, older tree with
an equivalent tree(s). In this case, the tree may be replaced with a
combination of both the Tree Canopy Replacement Standard and in-
lieu payment in an amount set forth by Town Council resolution paid
to the Town Tree Replacement Fund.
(4) Replacement Trees shall be approved by the Town Arborist and
shall be of a species suited to the available planting location,
proximity to structures, overhead clearances, soil type, compatibility
with surrounding canopy and other relevant factors. Replacement
with native species shall be strongly encouraged.
Tree Protection Guidelines
Design recommendations
1. Provide sufficient clearance between trees and proposed features
to avoid damage to roots.
2. Enlarge tree wells to increase water access and reduce sidewalk
damage potential.
3. Underground services including utilities, sub-drains, water or
sewer shall be routed around the tree protection zone (TPZ).
a. Where encroachment cannot be avoided, special
construction techniques such as hand digging or tunneling
under roots shall be employed where necessary to
minimize root injury.
4. Utilize novel design and construction techniques to preserve
roots where utilities or features must be within tree TPZs.
Pre-construction
1. The construction superintendent shall meet with the Project
Arborist before beginning work to discuss work procedures and
tree protection.
2. Fence street trees with Type III fencing prior to demolition,
grubbing, or grading.
a. Type III: Protection for a tree located in a small planter cutout
only: orange plastic fencing shall be wrapped around the
trunk from the ground to the first branch with two-inch
wooden boards bound securely on the outside. Caution shall
be used to avoid damaging any bark or branches.
Los Gatos Mixed Use Arborist Report December 20, 2023; updated October 24, 2024
Calyx Tree + Landscape Consulting, LLC
decklund.arborist@gmail.com 650.935.5822
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b. Duration: Fencing shall be erected before demolition, grading
or construction permits are issued and remain in place until the
work is completed. Contractor shall first obtain the approval of
the project arborist on record prior to removing a tree
protection fence.
c. Warning sign: Each tree fence shall have prominently displayed
an 8.5x11 sign stating: "Warning—Tree Protection Zone—This
fence shall not be removed and is subject to penalty according
to Town Code 29.10.1025."
i. Do not attach signs, wire, or rope to any protected tree.
3. Pruning trees to provide construction and access clearance may
be required.
a. All pruning shall be done by a State of California Licensed
Tree Contractor (C61/D49). All pruning shall be done by
Certified Arborist or Certified Tree Worker in accordance with
the Best Management Practices for Pruning (International
Society of Arboriculture, 2019) and adhere to the most recent
editions of the American National Standard for Tree Care
Operations (Z133.1) and Pruning (A300).
b. All tree work shall comply with the Migratory Bird Treaty Act
as well as California Fish and Wildlife code 3503-3513 to not
disturb nesting birds. To the extent possible, tree pruning and
removal should be scheduled outside of the breeding season.
Breeding bird surveys should be conducted prior to tree work.
Qualified biologists should be involved in establishing work
buffers for active nests.
Construction
1. Tree protection fence layout must be approved by the Project
Arborist. Fences must remain in this configuration throughout
construction.
a. No construction activities shall occur within tree protection
fencing. Construction activities include, but are not limited to:
i. Vehicle or pedestrian traffic
ii. Materials storage
iii. Vehicle exhaust
iv. Concrete cleanout water dumping
b. If tree protection fencing dimensions need to be reduced to
allow for site access, protect tree protection zones against
compaction by laying full sheets of plywood attached
together with tie plates over coarse bark mulch.
c. After construction is complete, tree protection fencing
may be moved as needed for hardscape and landscape
installation. Contact Project Arborist prior to removal.
2. Demolition of paving, utilities, and features within tree protection
zones shall be done carefully avoid damaging roots.
3. If live roots over one inch in diameter are encountered at any
time, in any location, prune with a sharp saw or bypass pruners,
as close as practical to the edge of the disturbed area.
4. Any major root pruning (roots 2” and greater in diameter) shall
receive the prior approval of and be supervised by the Project
Arborist.
5. If excavated areas are to be left open for longer than 3-4 days,
cover exposed or severed roots with burlap or jute fabric.
Los Gatos Mixed Use Arborist Report December 20, 2023; updated October 24, 2024
Calyx Tree + Landscape Consulting, LLC
decklund.arborist@gmail.com 650.935.5822
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a. Irrigate fabric daily to keep fabric moist until excavation work
is completed.
6. Any additional tree pruning needed for clearance during
construction must be performed by a Certified Arborist and not
by construction personnel.
Violations
1. If a violation occurs prior to proposed development, then
discretionary applications and/or building permit applications will
not be accepted or processed by the Town until the violation has
been remedied to the reasonable satisfaction of the Director.
2. Incomplete applications will not be processed further until the
violation has been remedied. If an application has been deemed
complete, it may be denied by the Director or forwarded to the
Planning Commission with a recommendation for denial at the
Director's discretion. Mitigation measures as determined by the
director may be imposed as a condition of approval.
3. For those trees on public property, replacement is to be
determined by the Director of Community Development or by the
Director of Parks and Public Works.
4. If a violation occurs during construction, the Town may issue a
stop work order suspending and prohibiting further activity on the
property pursuant to the grading, demolition, and/or building
permit(s) (including construction, inspection, and issuance of
certificates of occupancy) until a mitigation plan has been filed
with and approved by the Director, agreed to in writing by the
property owner(s) or the applicant(s) or both, and either
implemented or guaranteed by the posting of adequate security
in the discretion of the Director.
Maintenance of remaining trees
Because of changes in the growing environment after construction,
preserved trees may require additional maintenance. Tree health and
structural stability should be monitored. Occasional pruning,
fertilization, mulch, pest management, replanting and irrigation may
be required. As trees age, the likelihood of failure of branches or
entire trees increases; therefore, annual inspection for hazard
potential is recommended.
Please feel free to contact me if you have any questions about my
observations or recommendations.
Sincerely,
Deanne Ecklund (Goff)
Registered Consulting Arborist #647
ISA Qualified Tree Risk Assessor
Los Gatos Mixed Use Arborist Report December 20, 2023; updated October 24, 2024
Calyx Tree + Landscape Consulting, LLC
decklund.arborist@gmail.com 650.935.5822
Tag
# Common name
Trunk
Diam.
(in.)
Est.
Canopy
Diam.
(ft.)
Condition
(1=poor
5=excel.)
Tree
Disposition
Suitability
for
Preservation
Appraised
Value
Expected
Impact
Saved/
Removed
/Pruned
Height
range
(ft.)
Comments
170 Crape myrtle
Lagerstroemia indica
7 19 5 Street tree High
$ 1,800.00
Moderate Save 15 Street tree; good form and
structure.
171 Southern magnolia
Magnolia grandiflora
8 12 2 Street tree Low
$ 650.00
-Remove 12 Street tree; nice crown; large trunk
wound from base to 5'.
172 Southern magnolia
Magnolia grandiflora
7 7 2 Street tree Low
$ 550.00
-Remove 10 Street tree; small crown; large
trunk wound from base to 5'.
173 Evergreen pear
Pyrus kawakamii
19 20 3 Protected Moderate
$ 5,050.00
-Remove 20 Previously topped at ~12'; good
form, fair structure.
174 Coast live oak
Quercus agrifolia
26.5 34 4 Large
protected
High
$ 33,250.00
-Remove 23 Good form and structure; minor
thinning in upper crown.
175 Evergreen pear
Pyrus kawakamii
12 12 2 Protected Low
$ 1,300.00
-Remove 15 Previously topped at ~12'; poor
form and structure.
176 Southern magnolia
Magnolia grandiflora
6 18 3 Street tree Low
$ 650.00
n/a Save 13 Street tree; dense crown; large
trunk wound from base to 5'.
177 Glossy privet
Ligustrum lucidum
2.5,2.
5,2
10 2 Exempt
(species)
Low
$ 400.00
Moderate Save 11 Growing against building; leans
east; poor form and structure.
178 Glossy privet
Ligustrum lucidum
7,6.5 15 3 Exempt
(species)
Low
$ 550.00
Moderate Save 9 Growing against building; leans
east; fair form and structure.
179 Southern magnolia
Magnolia grandiflora
5 8 2 Street tree Low
$ 500.00
-Remove 13 Street tree; large trunk wound; thin
crown.
Tree Assessment
8
Physical Conditions,Reason for Removal
Low suitability for preservation.
Conflict with site plan.
Conflict with site plan.
Low suitability for preservation.
Low suitability for preservation.
Conflict with site plan.
Los Gatos Mixed Use Tree Inventory Map
151 E. Main St. (#170-179)
Deanne Ecklund
Certified Arborist WE9067-A
Calyx Tree + Landscape Consulting
December 20, 2023
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179
170
178
177
176
175
174
173
172