Arborist Report Community Development Department
FE-21Planning Division—Cupertino
CUPERTINO APPROVED
Case# ASA-2021-001,
( )
Approval Body: Admin Hearing
Approval Date 07/01/21
Signature Erick Serrano
Case Manager
Updated Arborist Report
10200 South De Anza Blvd.
Cupertino, CA 95014
PREPARED FOR
Rubicon Point Partners
55 2nd Street, Suite 1900
San Francisco, CA 94105
PREPARED BY:
HortScience I Bartlett Consulting
325 Ray Street
Pleasanton, CA 94566
March 4, 2021
HORT SCIENCE
BARTLETT CONSULTING
A)vis o i rI I'ie-.A.Illrr..lel...he.x xperl Lo,.. ,
Community Development Department
FE-21Planning Division—Cupertino
CUPERTINO APPROVED
Case# ASA-2021-001, Updated Arborist Report
A O
Approval Body: Admin Hearing 10200 South De Anza Blvd.
Approval Date 07/01/21 Cupertino, CA 95014
Signature Erick Serrano
Case Manager
Table of Contents
Page
Executive Summary 1
Introduction and Overview 2
Tree Assessment Methods 2
Description of Trees 3
Suitability for Preservation 5
Tree Preservation Guidelines 6
List of Tables
Table 1. Condition ratings and frequency of occurrence of trees 3
Table 2. Tree suitability for preservation 6
Exhibits
Tree Assessment Map
Tree Assessment Data Table
Community Development Department
FE-21Planning Division—Cupertino
CUPERTINO APPROVED Updated Arborist Report
Case# ASA-2 41 10211,
a ( � 10200 South De Anza Blvd.
Approval Body: Admin Hearing Cupertino, CA 95014
Approval Date 07/ 1/21
QFFMrn
Signature aty
�, �,rr�+�� �+, ;� ;„,,
,� ,v Ived in the redevelopment of the subject property in Cupertino, CA.
Theasiteacurrently consists of a commercial building with associated parking, landscaping, and a
storage yard. Development plans depict landscaping changes and retention of the existing
underground parking lot and building. Tree locations were included on the plans.
HortScience I Bartlett Consulting, a division of The F.A. Bartlett Tree Expert Company, was asked
to survey the trees within and immediately adjacent to the proposed work area in Cupertino.
Sixty-five (65)trees (at least 5" in trunk diameter)were evaluated. Seventeen (17)trees were
growing offsite with crowns extending over the property, including 14 street trees along South De
Anza Blvd and Cali Ave. Seven species comprised the 65 trees assessed. Species composition
was typical of commercial properties in Cupertino. None of the species assessed were native to
the Cupertino area.
In total, tree conditions ranged from poor(17 trees)to poor(12 trees)with 36 trees in fair
condition (Table 1). Furthermore, six trees were highly suitable for preservation, 26 were
moderately suitable, and 33 were poorly suited (Table 2).
Cupertino's Tree Ordinance Section 14.18.035 classifies the following trees as Protected:
• Street trees
• Heritage trees
• Certain California native species 10" in trunk diameter and larger
• Approved privacy protection planting in R-1 zoning districts
• Any tree required to be planted or retained as part of an approved development
application, building permit, tree removal permit or code enforcement action in all
zoning districts.
Based on the designations above, all 65 of the assessed trees met the City of Cupertino's criteria
for Protected status.
Protected trees may not be removed without a permit. Protected trees are identified in the Tree
Assessment Data Tables (see Exhibits).
Based on my evaluation of the plans:
• Eighteen (18)on-site trees will be removed due to a combination of their proximity to
proposed impactful work and low suitability for preservation.
o All are considered Protected.
• Forty-seven (47)trees are located outside the work area and can be preserved with no to
moderate impacts.
o All trees are Protected.
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CUPERTINO APPROVED
Case# ASA-2221-Q01,
arro-overview
Rubicon Point Partners is involved in the redevelopment of the subject property in Cupertino, CA.
Approval Body: Ac LD r ently consists of a commercial building with associated parking, landscaping, and a
Approval Date / .1 fans depict landscaping changes and retention of the existing
a
Signature AHgBgr ina lot nd building.
Case Manager
HortScience I Bartlett Consulting, a division of The F.A. Bartlett Tree Expert Company, was asked
to survey the trees within and immediately adjacent to the proposed work area in Cupertino.
Sixty-five (65)trees (at least 5" in trunk diameter)were evaluated. Seventeen (17)trees were
growing offsite with crowns extending over the property, including 14 street trees along South De
Anza Blvd and Cali Ave. Seven species comprised the 65 trees assessed. Species composition
was typical of commercial properties in Cupertino. None of the species assessed were native to
the Cupertino area.
This report provides the following information:
1. Assessment of the health, structural condition, and suitability for preservation of the trees
located within and with crown overhanging the proposed project area based on a visual
inspection from the ground.
2. An evaluation of anticipated impacts to trees from construction and recommendations for
removal and preservation.
3. Tree preservation guidelines during the design, construction, and maintenance phases of
construction.
4. A tree assessment map with approximate tree locations.
Tree Assessment Methods
Trees were assessed on November 23, 2020. The assessment included trees within and with
canopy overhanging the proposed work area. The assessment procedure consisted of the
following steps:
1. Identifying the tree species;
2. Tagging each tree with a numerically coded metal tag and recording its location on a
map. Off-site and inaccessible trees with canopy overhanging the work area were not
tagged and were assessed from the subject property;
3. Measuring the trunk diameter of each tree 5" in trunk diameter and larger at a point
54" above grade;
4. Evaluating health and structure based on a visual inspection from the ground:
Good(4-5) A healthy tree that may have a slight decline in vigor, small amount
of twig dieback, and minor structural defects that could be corrected.
Fair(3) Tree with moderate vigor, moderate twig and small branch dieback,
thinning of crown, poor leaf color, and moderate structural defects
that might be mitigated with regular care.
Poor(1-2) Tree in decline, epicormic growth, extensive dieback of medium to
large branches, and significant structural defects that cannot be
abated.
5. Rating the suitability for preservation as "high", "moderate", or"low". Suitability for
preservation considers the health, age and structural condition of the tree, and its
potential to remain an asset to the site for years to come.
High Trees with good health and structural stability that have the potential
for longevity at the site.
Moderate Trees with somewhat declining health and/or structural defects that
can be abated with treatment. The tree will require more intense
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Case# ASA-2021-001,
A management and monitoring, and may have shorter life span than
those in 'high' category.
Approval Body: Admin Hearing
Approval Date 07/01/2, Low Tree in poor health or with significant structural defects that cannot
Signature Erick Serrano a mitigated. Tree is expected to continue to decline, regardless of
Case Manager `reatment. The species or individual may have characteristics that
are undesirable for landscapes and generally are unsuited for use
areas.
Description of Trees
Sixty-five (65)trees were assessed. (Table 1). Descriptions of each tree are found in the Tree
Assessment Data Tables and approximate locations are plotted on the Tree Assessment Map
(see Exhibits).
In total, tree conditions ranged from poor(17 trees)to good (12 trees)with 36 trees in fair
condition (Table 1). Seventeen (17)trees were growing offsite with crowns extending over the
property, including 14 street trees along South De Anza Blvd and Cali Ave. Seven species
comprised the 65 trees assessed. Species composition was typical of developed properties in
Cupertino. None of the species assessed were native to the Cupertino area.
Table 1. Condition ratings and frequency of occurrence of trees
10200 South De Anza Blvd.
Cupertino, CA 95014
Common Name Scientific Name Condition Total
Poor Fair Good
(1-2) (3) (4-5)
Red maple Acer rubrum 1 - 4 5
Mediterranean fan palm Chamaerops humilis _ 1 - 1
Crape myrtle Lagerstroemia indica _ _ 1 1
Japanese black pine Pinus thunbergiana _ _ 1 1
Purpleleaf plum Prunus cerasifera 6 10 - 16
Evergreen pear Pyrus kawakamii 9 23 5 37
Chinese elm Ulmus parvifolia 1 2 1 4
Total 17 36 12 65
26% 55% 18%
Evergreen pear was the most frequently occurring species. A total of 37 pears (57% of the
inventory)were assessed. Twelve (12) evergreen pears grew in a landscaped area east of the
existing building (Photo 1). Twenty-two (22)grew along South De Anza Blvd; nine of these were
protected street trees. Tree conditions ranged from poor(nine trees)to good (five trees)with 23
trees in fair condition. Trunk diameters ranged from 7"to 20". All of the pears exhibited signs of
fire blight bacterial disease, to varying degrees of severity. Fire blight causes dieback and gradual
decline in overall condition. It is difficult to effectively manage.
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Case# ASA-20�1 00.1, t plums
were
also assessed. Tree conditions
Approval Body: AgMgbIJ4rt5M poor(six trees)to fair
Approval Date (10 trE !(Rdlividual trunk diameters
Signature rid ftmaVbto 9". Six of the plums
were5ltagtemmed. Many of the
plums also exhibited signs of internal
decay, which can compromise health
and structural integrity(Photo 2).
Five red maple street trees were
assessed. Tree conditions ranged V
from poor(one tree)to good (four
, rwrw�
trees). Individual trunk diameters
varied little from 7"to 9". The trees
were growing in a narrow planter
between the existing building and -
Cali Avenue. They also had a Photo 1 —Twelve (12) evergreen pears grew in a
fastigiate (compact and upright)form. landscaped area east of the existing building
Red maple#257 was in poor
condition with signs of wounding and decay in its trunk.
Four offsite Chinese elms were assessed.
Tree conditions ranged from poor(one tree)
r�r..
to good (one tree)with two trees in fair
r 1 condition. Individual trunk diameters ranged
from 5"to 12". The elms had spreading
crowns with varying degrees of dieback.
Chinese elm #221 was in poor condition with
a canker on its trunk, likely caused by
anthracnose fungal disease.
,. The remaining three species comprised 4.6%
of the trees assessed. The most noteworthy
of these included:
_ Japanese black pine#265 was in good
w condition with typical pyramidal form and
structure. Despite its bowed trunk, it had a
dense, vigorous crown. The semi-mature 10"
tree was growing along the eastern property
line.
• Mediterranean fan palm #213 was in fair
condition with browning live frond tips, an
indicator of stress. The 21" palm was growing
adjacent to the existing building.
Photo 2— Many of the purpleleaf plums
exhibited signs of internal decay, which can
compromise health and structural integrity.
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Case# 8SA-20217 W1,
A -- Section 14.18.035 classifies the following trees as Protected:
• Street trees
Approval Body: Admin� ea t e trees
Approval Date 07/A�/ g '" :a native species 10" in trunk diameter and larger
Signature Erick Serrano , r
•�p} oaey--p,=otection planting in R-1 zoning districts
Case Mani ge7rTo
• Any tree required to be planted or retained as part of an approved development
application, building permit, tree removal permit or code enforcement action in all
zoning districts.
Based on the designations above, all of the assessed trees met the City of Cupertino's criteria for
Protected status. Protected trees may not be removed without a permit. Protected trees are
identified in the Tree Assessment Data Tables(see Exhibits).
Suitability for Preservation
Before evaluating the impacts that will occur during development, it is important to consider the
quality of the tree resource itself, and the potential for individual trees to function well over an
extended length of time. Trees that are preserved on development sites must be carefully
selected to make sure that they may survive development impacts, adapt to a new environment
and perform well in the landscape.
Our goal is to identify trees that have the potential for long-term health, structural stability and
longevity. For trees growing in open fields, away from areas where people and property are
present, structural defects and/or poor health presents a low risk of damage or injury if they fail.
However, we must be concerned about safety in use areas. Therefore, where development
encroaches into existing plantings, we must consider their structural stability as well as their
potential to grow and thrive in a new environment. Where development will not occur, the normal
life cycles of decline, structural failure and death should be allowed to continue.
Evaluation of suitability for preservation considers several factors:
• Tree health
Healthy, vigorous trees are better able to tolerate impacts such as root injury, demolition
of existing structures, changes in soil grade and moisture, and soil compaction than are
non-vigorous trees. For example, the evergreen pear trees infected with the harmful and
difficult to treat fire blight bacterial disease had lower suitability.
• Structural integrity
Trees with significant amounts of wood decay and other structural defects that cannot be
corrected are likely to fail. Such trees should not be preserved in areas where damage to
people or property is likely.
• Species response
There is a wide variation in the response of individual species to construction impacts
and changes in the environment.
• Tree age and longevity
Old trees, while having significant emotional and aesthetic appeal, have limited
physiological capacity to adjust to an altered environment.
• Species invasiveness
Species that spread across a site and displace desired vegetation are not always
appropriate for retention. This is particularly true when indigenous species are displaced.
The California Invasive Plant Inventory Database http://www.cal-ipc.org/plants/inventory/
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CUPERTINO APPROVED
Case# �
ASA-20 1-001, .- ---- -
A t:f: d as being invasive. Cupertino is part of the Central West Floristic
Province. None of the trees assessed were classified as invasive.
Approval Body: Admin Hearing
Approval Date Each ROVAI rated for suitability for preservation based upon its age, health, structural condition
Signature a15diabititgui3efely coexist within a development environment (see Tree Assessment exhibit).
Weceensmder trees with high suitability for preservation to be the best candidates for preservation.
We do not recommend retention of trees with low suitability for preservation in areas where
people or property will be present. Retention of trees with moderate suitability for preservation
depends upon the intensity of proposed site changes.
Table 2. Tree suitability for preservation
10200 South De Anza Blvd.
Cupertino, CA 95014
High These are trees with good health and structural stability that have the potential
for longevity at the site. Six trees were considered highly suitable for
preservation.
Moderate Trees in this category have fair health and/or structural defects that may be
abated with treatment. These trees require more intense management and
monitoring, and may have shorter life-spans than those in the "high" category.
Twenty-six (26)trees were considered moderately suitable for preservation.
Low Trees in this category are in poor health or have significant defects in structure
that cannot be abated with treatment. These trees can be expected to decline
regardless of management. The species or individual tree may possess either
characteristics that are undesirable in landscape settings or be unsuited for use
areas. Thirty-three (33)trees were considered poor candidates for preservation.
Evaluation of Impacts and Recommendations
To assess impacts to trees, I reviewed the 10200 De Anza—Planning Submittal_0112 Plans
dated January 12 2020 and created by SWA. Surveyed trunk locations were plotted on the plans.
I identified trees that would likely be removed and preserved based on the locations of the trees
relative to proposed work on the plans and my field notes.
Landscape plans entail replacing existing landscaping with new trees and understory plants,
removing existing walls and curbs, and adding new hardscape. Based on plans, I recommend the
removal of 16 trees due to their proximity to proposed impactful work and poor condition. Offsite
trees, property-line trees, and trees located onsite outside the work area would be less impacted
by proposed work and have greater potential for successful transplant.
Based on my evaluation of the plans:
• Eighteen (18) on-site trees will be removed due to a combination of their proximity to
proposed impactful work and low suitability for preservation. An example of such a tree is
Japanese black pine#265 (Photo 3).
o All are considered Protected.
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Case# ASA-2021-001,
s are located
A outside the work area and can be
Approval Body: Admin Heap'
F6%erved with no to moderate "
Approval Date 07 PQ�
Signature Erick Serr ano A;,'zreesi„�Protected. f �r
Case Manager t
0 Eight trees were growing
offsite on adjacent ,
properties. t
o Crown pruning may be
necessary for work I
clearance. S
o Roots may be impacted $:
during excavation for new
landscaping installation. `
0 1 anticipate these impacts will
be within the trees'
thresholds of tolerance, but I
recommend adequately '
protecting these trees and
coordinating any necessary —
pruning work with adjacent
property owners and the
Project Arborist. .
Impacts to trees to be preserved can be Photo 3—Japanese black pine#265 had
minimized by following the Tree limited growing space, browning needles, and
Preservation Guidelines. was located where new landscaping is
planned.
Tree Preservation Guidelines
The following recommendations will help reduce impacts to trees from development as well as
maintain and improve their health and vitality through the clearing, grading and construction
phases. The key elements of a tree preservation would include:
1. Retaining select trees with high or moderate suitability for preservation.
2. Establishing TREE PROTECTION ZONE for each tree to be preserved. TREE PROTECTION
ZONE should be identified by the Consulting Arborist based on species tolerances, tree
condition, trunk diameters, and the nature and proximity of the proposed disturbance.
• Street trees should have tree protection zone fencing installed around the edges
of their planter strips or wood plank trunk protection (Photo 4) installed around
their trunks.
• The remaining offsite trees should have tree protection zone fencing installed
between their trunks and the edge of the proposed work area or access path.
Such work should be coordinated with the respective adjacent property owners.
• Trees onsite to be preserved should have tree protection zone fencing installed
to encompass the extents of their driplines.
3. Providing supplemental irrigation prior to and during the demolition and construction
phases.
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Case# ASA_2021_001, t:___
Approval Body: Admin kea 4 changes to the plans affecting the
Approval Date 07A21should be reviewed by the
_ with regard to tree
Signature Erick
_ T[___ include, but are not
Case Mana er
limited to, site plans, improvement plans,
utility and drainage plans, grading plans,
landscape and irrigation plans, and
demolition plans.
2. Plan for tree preservation by designing ;K
adequate space around trees to be
preserved. This Is the TREE PROTECTION
ZONE: No grading, excavation,
construction or storage of materials
should occur within that zone. Route
underground services including utilities,
sub-drains, water or sewer around the
TREE PROTECTION ZONE.
3. Irrigation systems must be designed so _ :; .,
that no trenching severs roots larger
than 1" in diameter will occur within the / [-
TREE PROTECTION ZONE.
4. Tree Preservation Guidelines
prepared by the Consulting Arborist, Photo 4—An example of wood plank trunk
which include specifications for tree protection is pictured above.
protection during demolition and
construction, should be included on all plans.
5. Any herbicides placed under paving materials must be safe for use around trees and
labeled for that use.
6. Do not lime the subsoil within 50' of any tree identified for preservation. Lime is toxic to
tree roots.
7. As trees withdraw water from the soil, expansive soils may shrink within the root area.
Therefore, foundations, footings and pavements on expansive soils near trees should be
designed to withstand differential displacement.
8. Ensure adequate but not excessive water is supplied to trees; in most cases occasional
irrigation will be required. Avoid directing runoff toward trees.
Pre-demolition and pre-construction treatments and recommendations
1. The demolition and construction superintendents shall meet with the Consulting Arborist
before beginning work to review all work procedures, access routes, storage areas, and
tree protection measures.
2. Fence all trees to be retained to completely enclose the TREE PROTECTION ZONE prior to
demolition, grubbing or grading. Fences shall be 6' tall chain link. Fences are to remain
until all grading and construction is completed.
3. Apply and maintain 4-6"wood chip mulch within the TREE PROTECTION ZONE. Keep the
mulch 2'from the base of tree trunks.
4. Fences are to remain until all grading and construction is completed. Where demolition
must occur close to trees, such as removing curb and pavement, install trunk protection
devices such as winding silt sock wattling around trunks or stacking hay bales around
tree trunks.
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Case# ASl-20g1-001
A _ L ___ ._ ._--served to clean the crown of dead branches 1" and larger in
diameter, raise canopies as needed for construction activities.
Approval Body: Admin Hearing
Approval Date 071011A. All pruning shall be done by a State of California Licensed Tree Contractor
Signature Erick SerranoCo
• II pruning shall be done by Certified Arborist or Certified Tree
Case Manager
In accordance with the Best Management Practices for Pruning
(International Society of Arboriculture, 2002) and adhere to the most recent
editions of the American National Standard for Tree Care Operations (Z133.1)
and Pruning (A300).
b. The Consulting Arborist will provide pruning specifications prior to site demolition.
c. Branches extending into the work area that can remain following demolition shall
be tied back and protected from damage.
d. While in the tree the arborist shall perform an aerial inspection to identify any
defects, weak branch and trunk attachments and decay not visible from the
ground. Any additional work needed to mitigate defects shall be reported to the
property owner.
6. Tree(s)to be removed that have branches extending into the canopy of tree(s)or located
within the TREE PROTECTION ZONE of tree(s)to remain shall be removed by a Certified
Arborist or Certified Tree Worker and not by the demolition contractor. The Certified
Arborist or Certified Tree Worker shall remove the trees in a manner that causes no
damage to the tree(s)and understory to remain. Stumps shall be ground below grade.
7. Trees to be removed shall be felled so as to fall away from TREE PROTECTION ZONE and
avoid pulling and breaking of roots of trees to remain. If roots are entwined, the
Consulting Arborist may require first severing the major woody root mass before
extracting the trees, or grinding the stump below ground.
8. All down brush and trees shall be removed from the TREE PROTECTION ZONE either by
hand, or with equipment sitting outside the TREE PROTECTION ZONE. Extraction shall occur
by lifting the material out, not by skidding across the ground. Brush shall be chipped and
spread beneath the trees within the TREE PROTECTION ZONE
9. Structures and underground features to be removed within the TREE PROTECTION ZONE
shall use equipment that will minimize damage to trees above and below ground, and
operate from outside the TREE PROTECTION ZONE. Tie back branches and wrap trunks
with protective materials to protect from injury as directed by the Project Arborist. The
Project Arborist shall be on-site during all operations within the TREE PROTECTION ZONE to
monitor demolition activity.
10. 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 feasible 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.
Recommendations for tree protection during construction
1. Any approved grading, construction, demolition or other work within the TREE PROTECTION
ZONE should be monitored by the Consulting Arborist.
2. All contractors shall conduct operations in a manner that will prevent damage to trees to
be preserved.
3. Tree protection devices are to remain until all site work has been completed within the
work area. Fences or other protection devices may not be relocated or removed without
permission of the Consulting Arborist.
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ASA-20 1-0 1
case# --q -•:-- -, traffic and storage areas must remain outside TREE PROTECTION
A
ZONE at all times.
Approval Body: Admin Hearing
Approval Date 507/bMrpot pruning required for construction purposes shall receive the prior approval of
Signature Erick 9ervised y the Project Arborist. Roots should be cut with a saw to provide a
Case Manage�- s„r-vm cut. Removal of roots larger than 2" in diameter should be avoided.
6. If roots 2" and greater in diameter are encountered during site work and must be cut to
complete the construction, the Project Arborist must be consulted to evaluate effects on
the health and stability of the tree and recommend treatment.
7. Prior to grading or trenching, trees may require root pruning outside the TREE
PROTECTION ZONE. Any root pruning required for construction purposes shall receive the
prior approval of, and be supervised by, the Project Arborist.
8. Spoil from trench, footing, utility or other excavation shall not be placed within the TREE
PROTECTION ZONE, neither temporarily nor permanently.
9. All grading within the dripline of trees shall be done using the smallest equipment
possible. The equipment shall operate perpendicular to the tree and operate from outside
the TREE PROTECTION ZONE. Any modifications must be approved and monitored by the
Consulting Arborist.
10. All trees shall be irrigated on a schedule to be determined by the Consulting Arborist
(every 3 to 6 weeks is typical). Each irrigation shall wet the soil within the TREE
PROTECTION ZONE to a depth of 30".
11. If injury should occur to any tree during construction, it should be evaluated as soon as
possible by the Consulting Arborist so that appropriate treatments can be applied.
12. No excess soil, chemicals, debris, equipment or other materials shall be dumped or
stored within the TREE PROTECTION ZONE.
13. Any additional tree pruning needed for clearance during construction must be performed
by a Certified Arborist and not by construction personnel.
14. Trees that accumulate a sufficient quantity of dust on their leaves, limbs and trunk as
judged by the Consulting Arborist shall be spray-washed at the direction of the Project
Arborist.
Maintenance of impacted trees
Our procedures included assessing trees for observable defects in structure. This is not to say
that trees without significant defects will not fail. Failure of apparently defect-free trees does
occur, especially during storm events. Wind forces, for example, can exceed the strength of
defect-free wood causing branches and trunks to break. Wind forces coupled with rain can
saturate soils, reducing their ability to hold roots, and blow over defect-free trees. Although we
cannot predict all failures, identifying those trees with observable defects is a critical component
of enhancing public safety.
Furthermore, trees change over time. Our inspections represent the condition of the tree at the
time of inspection. As trees age, the likelihood of failure of branches or entire trees increases.
Annual tree inspections are recommended to identify changes to tree health and structure. In
addition, trees should be inspected after storms of unusual severity to evaluate damage and
structural changes. Initiating these inspections is the responsibility of the client and/or tree owner.
Preserved trees will experience a physical environment different from that pre-development. As a
result, tree health and structural stability should be monitored. Occasional pruning, fertilization,
mulch, pest management, replanting and irrigation may be required. In addition, provisions for
monitoring both tree health and structural stability following construction must be made a priority.
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Plann+ngr6v+4si 2 0 pe-rt-Fno Page 11
CUPERTINO APPROVED
Case# SA- 0 ,W11y ,
A _ s about my observations or recommendations, please contact me.
Approval Body: Aftrtlt nce I Bartlett Consulting
Approval Date 7/01/21
Signature Ei :o
Ca a Manager
Jillian Keller, Consulting Arborist and Urban Forester
Certified Arborist and Utility Specialist#WE-12057A
Tree Risk Assessment Qualified (TRAQ)
Wildlife Trained Arborist
HortScience I Bartlett Consulting • Divisions of The F.A. Bartlett Tree Expert Company
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Community Development Department
FE-21Planning Division—Cupertino
CUPERTINO APPROVED
Case# ASA-2021-001,
( )
Approval Body: Admin Hearing
Approval Date 07/01/21
Signature Erick Serrano i
Case Manager
Exhibits
Tree Assessment Map
Tree Assessment Data Table
Tree Disposition Table
a
Community Development De101
~ •
Tree Assessment Map
Planning Division—Cuper ,
CUPERTINO APPROVED - _ :� •'�. "
Case# ASA-2021 001,
- _ 10200 S. De Anza Blvd.
Approval Body: Admin Hearing
Approval Date 07/01/21 Cupertino, CA
Signature Erick Serrano
Case Manager 1 •
Prepared for:
Rubicon Point Partners
San Francisco, CA
z November 2020
No Scale
- Notes
• • Base map provided by:
Google Earth
I
1 • Numbered tree locations are approximate.
i �•� AVQM
s 1 ��•
1 � �
HORT SCIENCE
y = `r + TBARTLETT CONSULTING
1 • D'ivisi ons of The FA-Bartlett Tree Expert Company
325 b• �� 1� - r �� Ray Street
Pleasanton,
1 Pleasanton,California 94566
•I •� — Phone 925.484.0211
.�� ,• —� 1 *• �� Fax 925.484.0596
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Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard
CUPERTINO Cupertino, CA �ffftXORT SCIENCE
Case# ree _ _ fnent March 2020 a11R11ET, oN111 TM�
a
Approval Body: Admin Hearing
Approval ffp@ No. SpE001/21 Trunk Protected Condition Suitability for Comments
Signature Erick Serrano Diameter Tree? 1=poor Preservation
Case Manager in.) 5=excellent
201 Evergreen pear 12 Yes 4 Moderate Fire blight; codominant at 10'; vigorous spreading crown; surface
roots present; crown raised.
202 Evergreen pear 11 Yes 3 Moderate Fire blight; codominant at 12'; thin crown with minor dieback;
surface roots present; crown raised.
203 Evergreen pear 8 Yes 3 Moderate Fire blight; codominant at 12'; thin crown with minor dieback;
surface roots present; crown raised.
204 Evergreen pear 11 Yes 3 Moderate Fire blight; codominant at 12'; thin crown with minor dieback;
surface roots present; central leader bows north; crown raised.
205 Evergreen pear 11 Yes 3 Low Fire blight; codominant at 18'; thin crown with minor dieback;
lower trunk wet from irrigation; poor structure; crown raised.
206 Evergreen pear 9 Yes 3 Low Fire blight; codominant at 12'; thin crown with minor dieback;
lower trunk wet from irrigation; poor structure; crown raised.
207 Evergreen pear 8 Yes 3 Low Fire blight; codominant at 10'; thin crown with minor dieback;
lower trunk wet from irrigation; poor structure; crown raised.
208 Evergreen pear 8 Yes 2 Low Fire blight; codominant at 10'; thin crown with minor dieback;
lower trunk wet from irrigation; poor structure; crown raised.
209 Evergreen pear 9 Yes 2 Low Fire blight; codominant at 10'; thin crown with minor dieback;
lower trunk wet from irrigation; poor structure; crown raised; one
sided to the east.
210 Evergreen pear 8 Yes 3 Moderate Fire blight; codominant at 10'; spreading crown with minor
dieback; lower trunk wet from irrigation; crown raised.
211 Evergreen pear 7 Yes 3 Low Fire blight; codominant at 10'; thin crown with minor dieback;
crown raised; poor structure.
212 Evergreen pear 8 Yes 3 Moderate Fire blight; codominant at 10'; thin crown with minor dieback;
crown raised; trunk bows west.
213 Mediterranean fan 21 Yes 3 Moderate 30' of bare trunk; live frond tips are browning; dried fronds still
palm attached.
214 Crape myrtle 4, 3, 3, 3, Yes 5 High Good vigorous tree; multiple stems arise at 1'; shrubby form.
3, 3, 2, 2,
2
Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard
CUPERTINO Cupertino, CA �ffftXORT SCIENCE
Case# ree _ _ fnent March 2020 a11R11ET, oN111 TM�
a
Approval Body: Admin Hearing
Approval ffp@ No. SpE001/21 Trunk Protected Condition Suitability for Comments
Signature Erick Serrano Diameter Tree? 1=poor Preservation
Case Manager in.) 5=excellent
215 Purpleleaf plum 3, 3, 2, 2, Yes 3 Low Multiple attachments arise at 2.5'; thin crown with moderate
2 dieback; crown raised; signs of shot hole borer.
216 Purpleleaf plum 3, 3, 3, 3, Yes 3 Low Multiple attachments arise at 2.5'; thin crown with moderate
3, 3 dieback; crown raised; signs of shot hole borer and internal decay.
217 Purpleleaf plum 3, 3, 3, 2, Yes 2 Low Multiple attachments arise at 25; thin crown with moderate
2, 2 dieback; crown raised; signs of shot hole borer; internal decay
visible in trunk.
218 Purpleleaf plum 2, 2, 2, 2, Yes 3 Low Multiple attachments arise at 2.5'; thin crown with moderate
2, 2, 1, 1 dieback; spreading crown raised.
219 Purpleleaf plum 3, 2, 2, 1 Yes 3 Low Multiple attachments arise at 2.5'; thin crown with moderate
dieback; crown raised.
220 Purpleleaf plum 4, 3, 2, 2 Yes 2 Low Multiple attachments arise at 2.5'; thin crown with moderate
dieback; spreading crown raised; signs of internal decay.
221 Chinese elm 12 Yes 2 Low Offsite; canker present on southern side of trunk; thin spreading
crown with moderate dieback.
222 Chinese elm 11 Yes 3 Moderate Offsite; codominant at 7'; thin spreading crown with moderate
dieback.
223 Chinese elm 10 Yes 3 Moderate Offsite; codominant at 8'; thin spreading crown with moderate
dieback.
224 Chinese elm 6 Yes 4 Moderate Offsite; good form and structure with minor dieback.
225 Purpleleaf plum 5 Yes 3 Low Crown raised; signs of internal decay; adjacent to light pole; minor
dieback.
226 Purpleleaf plum 7 Yes 2 Low Crown raised; signs of severe internal decay in trunk; surface
roots present; minor dieback.
227 Purpleleaf plum 7 Yes 2 Low Crown raised; signs of severe internal decay in trunk; surface;
minor dieback; root flare covered.
228 Purpleleaf plum 8 Yes 3 Low Crown raised; signs of internal decay in trunk; surface; dense
crown; surface roots present; codominant at 6'.
Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard
CUPERTINO Cupertino, CA �ffftXORT SCIENCE
Case# ree _ _ fnent March 2020 a11R11ET, oN111 TM�
a
Approval Body: Admin Hearing
Approval ffp@ No. SpE001/21 Trunk Protected Condition Suitability for Comments
Signature Erick Serrano Diameter Tree? 1=poor Preservation
Case Manager in.) 5=excellent
229 Purpleleaf plum 8 Yes 3 Low Crown raised; signs of internal decay in trunk; surface; dense
crown with minor dieback; surface roots present; codominant at 6';
trunk in hedge row.
230 Purpleleaf plum 7 Yes 2 Low Crown raised; signs of severe internal decay in trunk; surface; thin
crown with dieback; surface roots present; codominant at 6'.
231 Purpleleaf plum 7 Yes 3 Low Crown raised; surface; dense crown with minor dieback; surface
roots present; codominant at 5.5'.
232 Purpleleaf plum 5 Yes 2 Low Crown raised; surface;thin crown with minor dieback; surface
roots present; codominant at 7'; signs of internal decay.
233 Purpleleaf plum 9 Yes 3 Low Crown raised; dense crown with minor dieback; codominant at 6';
signs of internal decay; trunk in hedge row; surface roots present.
234 Evergreen pear 14 Yes 4 Moderate Large spreading crown with minor fire blight; codominant at 8'with
included park; at edge of property.
235 Evergreen pear 16 Yes 3 Moderate Large spreading crown with minor fire blight; multiple attachments
arise at 8'with included park; at edge of property; surface roots
present; minor dieback.
236 Evergreen pear 16 Yes 3 Moderate Offsite street tree; large spreading crown with minor fire blight;
multiple attachments arise at 8'with included bark; surface roots
present; minor dieback.
237 Evergreen pear 16 Yes 3 Moderate At edge of property; large spreading crown with minor fire blight;
multiple attachments arise at 6'; surface roots present; minor
dieback.
238 Evergreen pear 15 Yes 3 Moderate Large spreading crown with minor fire blight; multiple attachments
arise at 6'with included bark; at edge of property; surface roots
present; minor dieback.
239 Evergreen pear 14 Yes 3 Moderate Offsite street tree; large spreading crown with minor fire blight;
codominant attachments arise at 8'with included bark; surface
roots present; minor dieback.
Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard
CUPERTINO Cupertino, CA �ffftXORT SCIENCE
Case# ree _ _ fnent March 2020 a11R11ET, oN111 TM�
a
Approval Body: Admin Hearing
Approval ffp@ No. SpE001/21 Trunk Protected Condition Suitability for Comments
Signature Erick Serrano Diameter Tree? 1=poor Preservation
Case Manager in.) 5=excellent
240 Evergreen pear 14 Yes 3 Moderate At edge of property, large spreading crown with minor fire blight;
codominant attachments arise at 8'with included bark; surface
roots present; minor dieback.
241 Evergreen pear 15 Yes 3 Moderate At edge of property, large spreading crown with minor fire blight;
codominant attachments arise at 8'with included bark; surface
roots present; minor dieback.
242 Evergreen pear 18 Yes 3 Moderate Offsite street tree, large spreading crown with minor fire blight;
codominant attachments arise at 10'with included bark; surface
roots present; minor dieback; adjacent to street light.
243 Evergreen pear 13 Yes 3 Low At edge of property, large spreading crown with minor fire blight;
multiple attachments arise at 8' with included bark; surface roots
present; minor dieback; one sided to the west.
244 Evergreen pear 14 Yes 3 Low At edge of property, large spreading crown with minor fire blight;
codominant attachments arise at 8'with included bark; surface
roots present; minor dieback; decay in base.
245 Evergreen pear 17 Yes 3 Low Offsite street tree, large spreading crown with minor fire blight;
codominant attachments arise at 10'with included bark; surface
roots present; moderate dieback; past branch failures.
246 Evergreen pear 14 Yes 2 Low At edge of property, large spreading crown with minor fire blight;
codominant attachments arise at 7'with included bark; surface
roots present; minor dieback; past branch failures; thin crown.
247 Evergreen pear 10 Yes 2 Low At edge of property, large spreading crown with minor fire blight;
codominant attachments arise at 6'with included bark; surface
roots present; minor dieback; decay in base; thin crown; epicormic
growth.
248 Evergreen pear 19 Yes 4 Moderate Offsite street tree; large spreading crown with minor fire blight;
codominant attachments arise at 10'with included bark; surface
roots present; minor dieback; dense crown.
Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard
CUPERTINO Cupertino, CA �ffftXORT SCIENCE
Case# ree _ _ fnent March 2020 a11R11ET, oN111 TM�
a
Approval Body: Admin Hearing
Approval ffp@ No. SpE001/21 Trunk Protected Condition Suitability for Comments
Signature Erick Serrano Diameter Tree? 1=poor Preservation
Case Manager in.) 5=excellent
249 Evergreen pear 14 Yes 3 Moderate At edge of property; large spreading crown with minor fire blight;
codominant attachments arise at 7'with included bark; surface
roots present; minor dieback; slightly thin crown.
250 Evergreen pear 18 Yes 2 Low Offsite street tree; large spreading crown with minor fire blight;
codominant attachments arise at 10'with included bark; surface
roots present; minor dieback; decay in trunk.
251 Evergreen pear 14 Yes 2 Low At edge of property; large spreading crown with minor fire blight;
codominant attachments arise at 7'with included bark; surface
roots present; minor dieback; signs of decay in crown; poor
structure.
252 Evergreen pear 18 Yes 2 Low Offsite street tree; large spreading crown with minor fire blight;
codominant attachments arise at 12'with included bark; surface
roots present; moderate dieback; signs of decay in crown; poor
structure.
253 Evergreen pear 14 Yes 2 Low At edge of property; large spreading crown with minor fire blight;
codominant attachments arise at 7'with included bark; surface
roots present; moderate dieback; signs of decay in crown; poor
structure; one sided to east.
254 Evergreen pear 18 Yes 2 Low Offsite street tree; large spreading crown with minor fire blight;
codominant attachments arise at 10'with included bark; surface
roots present; moderate dieback; signs of decay in crown; poor
structure; past failures.
255 Evergreen pear 20 Yes 3 Moderate Offsite street tree; large spreading crown with minor fire blight;
codominant attachments arise at 10'with included bark; large
surface roots present; moderate dieback; dense crown; past
failures.
256 Red maple 8 Yes 4 High Compact upright form; multiple attachments arise at 6.5'; surface
roots present; in between building and road in narrow planter.
Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard
CUPERTINO Cupertino, CA �ffftXORT SCIENCE
Case# ree _ _ fnent March 2020 a11R11ET, oN111 TM�
a
Approval Body: Admin Hearing
Approval ffp@ No. SpE001/21 Trunk Protected Condition Suitability for Comments
Signature Erick Serrano Diameter Tree? 1=poor Preservation
Case Manager in.) 5=excellent
257 Red maple 8 Yes 2 Low Compact upright form; surface roots present; in between building
and road in narrow planter; signs of internal decay in trunk.
258 Red maple 8 Yes 4 High Compact upright form; good structure; surface roots present; in
between building and road in narrow planter.
259 Red maple 7 Yes 4 High Compact upright form; good structure; surface roots present; in
between building and road in narrow planter.
260 Red maple 9 Yes 4 High Compact upright form; good structure; surface roots present; in
between building and road in narrow planter.
261 Evergreen pear 10 Yes 3 Moderate Offsite overhanging property: dense spreading crown with fire
blight; leans away from adjacent building.
262 Evergreen pear 12 Yes 4 Moderate Offsite overhanging property: dense spreading crown with fire
blight; leans away from adjacent building.
263 Purpleleaf plum 6 Yes 3 Moderate Offsite overhanging property: dense crown; leans away from
adjacent building.
264 Evergreen pear 11 Yes 4 Moderate Offsite overhanging property: dense spreading crown with fire
blight; leans away from adjacent building.
265 Japanese black pine 10 Yes 4 High Typical form and structured; trunk is bowed west; dense crown; on-
site; base crowded by landscaping; in concrete planter.
Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard �i<UPERTINO
TreeD �P� IOn Cupertino, CA NORCIENCE
Case# HS �iTlf , March 2021 BIRTlETl CoNsu�TiN13
Approval Body•,�d In Hgaring
Tree No. Spe")b Trunk Protected Condition Disposition Comments
Approval date
eter Tree? 1=poor
Signature Erick Serrano n.) 5=excellent
Case Manager
201 Evergreen pear 12 Yes 4 Preserve Outside work area
202 Evergreen pear 11 Yes 3 Remove Diseased with fire blight; located in area where landscaping is to be removed
and where outdoor room installation is planned.
203 Evergreen pear 8 Yes 3 Preserve Adjacent to where landscaping and hardscaping will be removed; use
caution when working near tree, install protection.
204 Evergreen pear 11 Yes 3 Remove Diseased with fire blight; located in area where landscaping and nearby
hardscaping are to be replaced with paving and patio furniture.
205 Evergreen pear 11 Yes 3 Remove Diseased with fire blight; located in area where landscaping and nearby
hardscaping are to be removed.
206 Evergreen pear 9 Yes 3 Remove Diseased with fire blight; located in area where landscaping and nearby
hardscaping are to be removed.
207 Evergreen pear 8 Yes 3 Remove Diseased with fire blight; located in area where landscaping and nearby
hardscaping are to be removed.
208 Evergreen pear 8 Yes 2 Remove Diseased with fire blight; located in area where landscaping and nearby
hardscaping are to be removed.
209 Evergreen pear 9 Yes 2 Remove Diseased with fire blight; located in area where landscaping and nearby
hardscaping are to be removed.
210 Evergreen pear 8 Yes 3 Remove Diseased with fire blight; located in area where landscaping and nearby
hardscaping are to be removed.
211 Evergreen pear 7 Yes 3 Remove Diseased with fire blight; located in area where landscaping will be replaced.
212 Evergreen pear 8 Yes 3 Remove Diseased with fire blight; located in area where landscaping will be replaced.
213 Mediterranean fan palm 21 Yes 3 Remove Conflicts with proposed landscaping-located in area where landscaping will
be replaced with bamboo; some potential to work around and preserve.
214 Crape myrtle 4, 3, 3, 3, Yes 5 Preserve Existing planter will be retained around tree.
3, 3,2, 2,
2
215 Purpleleaf plum 3, 3,2, 2, Yes 3 Remove Has dieback and decay; located where bar table installation is planned.
2
Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard �i<UPERTINO
TreeD �P� IOn Cupertino, CA NORCIENCE
Case# HS �iTlf , March 2021 BIRTlETl CoNsu�TiN13
Approval Body•,�d In Hgaring
Tree No. Spe")b Trunk Protected Condition Disposition Comments
Approval date
eter Tree? 1=poor
Signature Erick Serrano n.) 5=excellent
Case Manager
216 Purpleleaf plum 3, 3, 3, 3, Yes 3 Remove Has dieback and decay; located where bar table installation is planned.
3, 3
217 Purpleleaf plum 3, 3, 3, 2, Yes 2 Remove Has dieback and decay; conflicts with proposed landscaping -located in area
2, 2 where landscaping will be replaced with bamboo and rush; some potential to
work around and preserve.
218 Purpleleaf plum 2, 2, 2, 2, Yes 3 Remove Has dieback and decay; located where bar table installation is planned.
2, 2, 1, 1
219 Purpleleaf plum 3,2,2, 1 Yes 3 Remove Has dieback and decay; located where bar table installation is planned.
220 Purpleleaf plum 4, 3, 2, 2 Yes 2 Remove Has dieback and decay; conflicts with proposed landscaping -located in area
where landscaping will be replaced with bamboo and rush; some potential to
work around and preserve.
221 Chinese elm 12 Yes 2 Preserve Outside work area
222 Chinese elm 11 Yes 3 Preserve Outside work area
223 Chinese elm 10 Yes 3 Preserve Outside work area
224 Chinese elm 6 Yes 4 Preserve Outside work area
225 Purpleleaf plum 5 Yes 3 Preserve Located outside circular concrete walls to be retained; located in area to be
landscaped; consider removal due to poor condition.
226 Purpleleaf plum 7 Yes 2 Preserve Located outside circular concrete walls to be retained; located in area to be
landscaped; consider removal due to poor condition.
227 Purpleleaf plum 7 Yes 2 Preserve Located outside circular concrete walls to be retained; located in area to be
landscaped; consider removal due to poor condition.
228 Purpleleaf plum 8 Yes 3 Preserve Located outside circular concrete walls to be retained; located in area to be
landscaped.
229 Purpleleaf plum 8 Yes 3 Preserve Located outside circular concrete walls to be retained; located in area to be
landscaped.
230 Purpleleaf plum 7 Yes 2 Preserve Located outside circular concrete walls to be retained; located in area to be
landscaped; consider removal due to poor condition.
231 Purpleleaf plum 7 Yes 3 Preserve Located outside circular concrete walls to be retained; located in area to be
landscaped.
232 Purpleleaf plum 5 Yes 2 Preserve Located outside circular concrete walls to be retained; located in area to be
landscaped; consider removal due to poor condition.
Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard �i<UPERTINO
TreeD �P� IOn Cupertino, CA NORCIENCE
Case# HS �iTlf , March 2021 BIRTlETl CoNsu�TiN13
Approval Body•,�d In Hgaring
Tree No. Spe")b Trunk Protected Condition Disposition Comments
Approval date
eter Tree? 1=poor
Signature Erick Serrano n.) 5=excellent
Case Manager
233 Purpleleaf plum 9 Yes 3 Preserve Too close to proposed landscaping work
234 Evergreen pear 14 Yes 4 Preserve Outside work area
235 Evergreen pear 16 Yes 3 Preserve Outside work area
236 Evergreen pear 16 Yes 3 Preserve Outside work area
237 Evergreen pear 16 Yes 3 Preserve Outside work area
238 Evergreen pear 15 Yes 3 Preserve Outside work area
239 Evergreen pear 14 Yes 3 Preserve Outside work area
240 Evergreen pear 14 Yes 3 Preserve Outside work area
241 Evergreen pear 15 Yes 3 Preserve Part of dripline within area to be re-landscaped; hand dig area within dripline
and avoid root damage.
242 Evergreen pear 18 Yes 3 Preserve Outside work area
243 Evergreen pear 13 Yes 3 Preserve Outside work area
244 Evergreen pear 14 Yes 3 Preserve Part of dripline within area to be re-landscaped; hand dig area within dripline
and avoid root damage.
245 Evergreen pear 17 Yes 3 Preserve Outside work area
246 Evergreen pear 14 Yes 2 Preserve Outside work area
247 Evergreen pear 10 Yes 2 Preserve Part of dripline within area to be re-landscaped; hand dig area within dripline
and avoid root damage.
248 Evergreen pear 19 Yes 4 Preserve Outside work area
249 Evergreen pear 14 Yes 3 Preserve Outside work area
250 Evergreen pear 18 Yes 2 Preserve Outside work area
251 Evergreen pear 14 Yes 2 Preserve Outside work area
252 Evergreen pear 18 Yes 2 Preserve Outside work area
253 Evergreen pear 14 Yes 2 Preserve Outside work area
254 Evergreen pear 18 Yes 2 Preserve Outside work area
255 Evergreen pear 20 Yes 3 Preserve Outside work area
256 Red maple 8 Yes 4 Preserve Outside work area
257 Red maple 8 Yes 2 Preserve Outside work area
258 Red maple 8 Yes 4 Preserve Outside work area
Community Development Department
11-21 Planning Division—Cupertino 10200 South De Anza Boulevard �i<UPERTINO
TreeD �P� IOn Cupertino, CA NORCIENCE
Case# HS �iTlf , March 2021 BIRTlETl CoNsu�TiN13
Approval Body•,�d In Hgaring
Tree No. Spe")b Trunk Protected Condition Disposition Comments
Approval date
eter Tree? 1=poor
Signature Erick Serrano n.) 5=excellent
Case Manager
259 Red maple 7 Yes 4 Preserve Outside work area
260 Red maple 9 Yes 4 Preserve Outside work area
261 Evergreen pear 10 Yes 3 Preserve Outside work area
262 Evergreen pear 12 Yes 4 Preserve Outside work area
263 Purpleleaf plum 6 Yes 3 Preserve Outside work area
264 Evergreen pear 11 Yes 4 Preserve Outside work area
265 Japanese black pine 10 Yes 4 Remove Potential safety concern with leaning trunk; limited growing space in current
landcaping; conflicts with proposed landscaping -located in area where
landscaping will be replaced with bamboo; some potential to work around
and preserve.