HomeMy WebLinkAboutItem 5b. REVIEW A TREE REMOVAL APPLICATION TO REMOVE NINE (9) TREES AT EMERSON PARK, 1341 NIPOMO STREET
TREE COMMITTEE AGENDA REPORT
SUBJECT: Request for the removal of nine (9) trees at Emerson Park , 1341 Nipomo
Street
APPLICATION NO.: TREE-0467-2026
FROM: Walter Gault, Urban Forestry Program Coordinator / City Arborist
Phone Number: (805) 781-7578
Email: wgault@slocity.org
RECOMMENDATION
Review the proposed tree removal application for consistency with the Municipal Code
Section 12.24.090(E) and provide a recommendation to the Community Development
Director.
1.0 APPLICATION DESCRIPTION
The City of San Luis Obispo, the property owner and applicant, has requested the removal
of nine (9) trees (see Table 1 below) at Emerson Park located at 1341 Nipomo Street
(Attachment A, Tree Removal Application Form). The removal request is related to the
City’s Emerson Park Amenity Upgrades and Beautification Project associated with the
Prop 68 State Parks Grant. The Emerson Park Amenity Upgrades and Beautification
Project is one of the many Capital Improvement Projects (CIP) that were included in the
City’s budget adopted by Council.
Meeting Date: 8/24/2026
Item Number: 5b
Time Estimate: 30 minutes
Figure 1: Location of proposed tree removals.
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Item 5b
In December of 2021, the City of San Luis Obispo was successfully awarded a California
State Parks Prop 68 Grant to revitalize Emerson Park. As a part of the application
requirements, the community outreach process was fulfilled as part of the Parks &
Recreation Blueprint for the Future. The concept and enhancements were previously
reviewed by the Parks and Recreation Commission on February 4, 2026. Details on all
the upgrades to the park are included in the Project Plans (Attachment B).
Table 1: List of the nine (9) trees requested for removal (See Attachment C and
Attachment D for more information)
Tree ID # Common Botanical DSH Removal
Reason
54 Brazilian
pepper
Schinus
terebinthifolius
28 inches
Poor condition,
critical root
zone (CRZ)
impact (demo)
72 Ornamental
pear
Pyrus
calleryana 14
Poor condition,
CRZ impact
(demo)
81 Coast live oak Quercus
agrifolia 3,4,4
Poor condition,
CRZ impact
(utility)
82 Coast live oak Quercus
agrifolia 5,6 CRZ impact
(utility)
86 American
sweet gum
Liquidambar
styraciflua 2 CRZ impact
(bathroom)
87 American
sweet gum
Liquidambar
styraciflua 3 CRZ impact
(sidewalk)
88 Crape myrtle Lagerstroemia
indica
1,1,1 multi-
stem
CRZ impact
(sidewalk)
101 Coast live oak Quercus
agrifolia 10
CRZ impact
(perimeter
fencing)
102 American
sweet gum
Liquidambar
styraciflua 4
CRZ impact
(perimeter
fencing)
The application includes an Arborist Report (Attachment C) where f ifty-four trees on-site
were inventoried, impacts were assessed and a tree protection plan prepared. The trees
proposed for removal and the tree protection plan have also been consolidated into a
visual Site Plan (Attachment D). The applicant has proposed an 11:9 on-site
compensatory replanting plan that is shown on Sheet L-7.0 of the Project Plans
(Attachment B).
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Item 5b
2.0 COMMITTEE PURVIEW
The Tree Committee’s role is to review the removal request in accordance with the
process set forth in San Luis Obispo Municipal Code (SLOMC) Chapter 12.24, specifically
Section 12.24.090(F)(2) - tree removals related to ministerial development permits on
parcels other than R-1 or R-2. This code section utilizes the relevant additional application
requirements in subsection (D)(2) and the criteria set forth in subsection (G).
3.0 TREE REGULATIONS
The City’s Tree Ordinance (Municipal Code Chapter 12.24) was adopted with the purpose
of establishing a comprehensive program for installing, maintaining, and preserving trees
within the City. This ordinance establishes policies, regulations, and specifications
necessary to govern installation, maintenance, removal, and preservation of trees to
beautify the city; to purify the air; to provide shade and wind protection; t o add
environmental and economic value; and to preserve trees with historic or unusual value.
Criteria for Construction Related Tree Removal Applications.
SLOMC §12.24.090 subsection (F)(3) requires review by the Tree Committee using the
criteria set forth in SLOMC §12.24.090(G). Applicable criteria are provided in italics below
and followed by a description of the proposed tree removals as it relates to that criterion.
(G)(1). Size of Tree. The scale of the tree shall be considered, as well as the size
of the tree’s canopy. Larger, more visually prominent trees may have a higher
preservation priority than smaller, less visually prominent trees.
The trees proposed for removal are generally not large or visually prominent.
(G)(2). Location of Tree on Private Property. The location of the tree on private
property shall be considered. Trees located in a private rear yard, which are not
highly visible from the public right-of-way, may have a lower preservation priority
than trees with a high visual impact to the neighborhood.
Most trees requested for removal are recessed inside the park or are small enough
so that they do not have a high visual impact on the neighborhood except for Trees
#54 and #72.
(G)(3). Species of Tree. Native trees shall have a higher preservation priority than
non-native trees.
Three (3) trees (#81, 82, 101) are native coast live oaks (Quercus agrifolia). The
remaining six (6) trees (#54, 72, 86, 87, 88, and 102), are non-native.
(G)(4). Forestry Best Practice. The number of healthy trees that a given parcel of
land will support shall be considered, and whether removal would enhance the
health or survival of remaining trees. Applications that increase biodiversity of
native trees and tree age distribution within a given area are preferred.
The Arborist report analysis notes that trees #101 and 102 have been suppressed
by the presence of other larger trees. Others have poor structure or are in poor
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Item 5b
condition (#54, 72, 81) and are not considered healthy (see Appendix A in
Attachment C). However, the proposed removals and compensatory replanting
plan places new trees in locations where they can be healthy and are not in
competition for light and resources with other trees, and increases the biodiversity
and tree age distribution in the park.
(G)(6). Compliance with Subsection J of This Section Regarding Compensatory
Plantings. The approving authority may consider an application proposal to provide
compensatory plantings in excess of required minimums in evaluating this
criterion.
The applicant is proposing to exceed the minimum required replanting rate of 1:1
on-site by replanting eleven (11) compensatory trees for nine (9) removals.
(G)(7). Heritage Trees. Heritage trees have the highest preservation priority.
None of the trees proposed for removal are heritage trees.
4.0 ACTIONS
4.1 Recommend findings of consistency with the Tree Regulations. An action
recommending approval of the proposed tree removals based on consistency
will be forwarded to the Community Development Director for final action. This
action may include recommendations regarding the compensatory replanting
plan with size and species of tree.
4.2 Recommend findings of inconsistency with the Tree Regulations. An action
recommending denial of the proposed tree removals should include findings
that cite the basis for denial and should reference inconsistency with the
General Plan, Tree Regulations, or other policy documents.
4.3 Continue the project to a hearing date certain, or uncertain. An action
continuing the review of the proposed tree removals should include direction to
the applicant and staff on pertinent issues.
5.0 ATTACHMENTS
A - Tree Removal Application Form (1341 Nipomo St.)
B - Project Plans (Emerson Park)
C - Arborist Report (Emerson Park)
D - Site Plan (Emerson Park)
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City of San Luis Obispo, Community Development, 919 Palm Street, San Luis Obispo, CA, 93401-3218, 805.781.7170, slocity.org
TREE REMOVAL APPLICATION
For all Non-Construction and Construction related tree removals
Owner Name: Applicant Name:
Address: Address:
City: Zip: City: Zip:
Phone: Phone:
Email: Email:
Address of Tree(s):
Number of trees applying to remove:
Tree Species:
Application Description & Reason for Removal:
Is this removal a City Tree? YES NO DON’T KNOW Dog in yard? YES NO
Is this associated with a Building Permit or Development Plan? _____ YES _____ NO
If YES, please provide appropriate reference numbers:
Is this property governed by a Homeowners Association (HOA)? YES NO If YES, please provide
HOA Board Approved Meeting minutes authorizing tree removal(s) with your tree removal application.
ALL ITEMS BELOW MUST BE INCLUDED TO PROCESS TREE REMOVAL APPLICATIONS
Tree(s) banded with ribbon or duct tape for identification
Site plan drawing or photo of tree site with Tree ID (Tree#1, Tree #2, etc.)
Supporting documentation (repair, receipts, etc.)
Photo log showing damage or reasons for removal1
Replanting plan2
Arborist Report3
INCOMPLETE APPLICATIONS WILL NOT BE ACCEPTED.
FAILURE TO KEEP TREES BANDED MAY RESULT IN A REJECTED APPLICATION.
1.Include a photo log that clearly shows the trees requested for removal. All tree(s) must be
uniquely identified by a number and a ribbon, or an identifier wrapped around the truck in the
photo and prior to inspection.
2.Include a replanting plan in accordance with Section 12.24.090(J) of the City’s Municipal
Code. A minimum 1:1 replanting rate is required for plantings onsite, and a minimum 2:1
replanting rate is required for plantings offsite or within the public right-of-way.
3.An application for tree removal on a site where a discretionary or ministerial development
permit is requested shall include an arborist report and a site plan that includes accurate drip
line delineation and cross sections of construction work impacting both trees proposed for
removal and trees planned to remain.
4.If an "Imminent Hazard to Life or Property" Application is being submitted, a statement from a
TRAQ Qualified & Certified Arborist must be provided.
City of SLO Wyatt Banker-Hix
919 Palm St 919 Palm St
San Luis Obispo 93405 San Luis Obispo 93406
805-295-1609 805-295-1609
wbanker@slocity.org wbanker@slocity.org
1341 Nipomo Street
9
Brazillian Pepper, Ornamental Pear, Coast Live Oak, American Sweet Gum, Crape Myrtle
Capital Improvement Project, Spec 2000514 Emerson Park Beautification
Removal and replacement of hardscape around trees as part of this project
4
4
4 4
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Tree Removal Decisions as outlined in Section 12.24.090 of the City’s Municipal Code
SELECT TYPE OF TREE REMOVAL APPLICATION BEING SUBMITTED DECISION MAKER
Imminent Hazard to Life or Property
SLOMC 12.24.090(E)(1)(a) City Arborist
Tree Health and Hazard Mitigation
SLOMC 12.24.090(E) City Arborist
Convenience Removal
SLOMC 12.24.090(E)(3)
Tree Committee makes recommendation to Community Development Director
Community
Development Director
Minor Ministerial Development Permit
SLOMC 12.24.090(F)(1)
Removal for residential or accessory construction on an R-1 or R-2 lot
City Arborist
Discretionary Permits Construction Tree Removal
SLOMC 12.24.090(F)(3)
Community
Development Director
Major Development / Tentative Tract Map/ Conditional Use Permit
SLOMC 12.24.090(F)(4) Planning Commission
Submittal Instructions
Submit Tree Removal applications to the City of San Luis Obispo, Community Development Department at
the following address: 919 Palm Street, San Luis Obispo, CA 93401 or by email to trees@slocity.org.
Payment of the “Tree Removal Permit” fee shall be submitted along with this application. Refer to the City’s
current Comprehensive Fee Schedule for the current fee.
Property Owner Authorization:
By signing this application, I certify that I have reviewed
this completed application and the attached material
and consent to its filing. I agree to allow the Community
Development Department to duplicate and distribute
submitted materials to interested persons as it
determines is necessary for the processing of the
application.
Signed Date
Applicant/ Representative Certification:
By signing this application, I certify that the information
provided is accurate. I understand the City might not
approve what I’m applying for or might set conditions of
approval. I agree to allow the Community Development
Department to duplicate and distribute submitted
materials to interested persons as it determines is
necessary for processing of the application.
Signed Date
Permission to Access Property:
This section is to be completed by the property owner
and/or occupant who controls access to the property. To
adequately evaluate the submitted proposal,
Community Development Department Staff,
Commissioners and City Council Members will have to
gain access to the exterior of the real property in order
to adequately review and report on the proposed
request. Your signature below certifies that you agree to
give the City permission to access the project site from
8 a.m. to 5 p.m., Monday through Friday, as part of the
normal review of this application.
Signed Date
Indemnification Agreement:
The Owner/Applicant shall defend, indemnify and hold
harmless the City or its agents or officers and
employees from any claim, action or proceeding against
the City or its agents, officers or employees, to attack,
set aside, void, or annul, in whole or in part, the City’s
approval of this project. In the event that the City fails to
promptly notify the Owner / Applicant of any such claim,
action or proceeding, or that the City fails to cooperate
fully in the defense of said claim, this condition shall
thereafter be of no further force or effect.
Signed Date
Statement from Certified
Arborist with TRAQ
7/1/2026 7/1/2026
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1343 Bishop Street, San Luis Obispo, CA 93401
Tel: 805 234 8760 Email: rodney@heritagetreeconsulting.com
Date: June 29, 2026
To: Jessica Benet - SSA Landscape Architects, Inc.
303 Potrero Street - Suite 40-C, Santa Cruz, CA 95060
From: Rodney Thurman - Heritage Tree Arboricultural Consulting Inc.
Re: Tree inventory, impact and tree protection plan regarding proposed park renovations at
Emerson Park in the City of San Luis Obispo, California.
Ms. Benet,
In response to your request for a tree inventory, impact and tree protection plan regarding proposed
park renovations at Emerson Park, I have produced the following report.
Assignment
Produce written tree inventory, tree impact and tree p rotection report adhering to City of San Luis
Obispo tree regulation standards.
Report to include:
o Synopsis of tree conditions.
o Spreadsheet accounting of all trees within building envelope, utility installation routes
or other site improvement areas.
o Show location, species, diameter at standard height (dsh) of all individual trees in study
area on tree site map.
o Indicate which trees will be removed or impacted.
o Indicate trees to be protected on site plan.
o Determine and delineate tree protection zones (TPZs).
o Tree protection guidelines for contractors.
Summary
In total, fifty-four (54) trees were listed in the inventory and tree protection plan. The proposed
project is for renovation of the entire park. I have proposed the removal of nine (9) trees due to
substantial construction impacts.
Two (2) trees will require mitigation based on meeting the diameter size for tree replacements set
by the city. The replacement ratio is typically 1:1 but the final determination will be made by the
city arborist or community development director.
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2
A pre-construction meeting shall be held with the project arborist and all parties involved with the
project to ensure all tree protection measures are understood. All tree protection fencing, and tree
protection measures shall be in place before any construction activity begins.
Introduction
The site is an established park with mature landscape trees, basketball court, bocce court, exercise
equipment, community gardens and picnic areas. The land has been leveled, and the majority of the
useable area is planted in turf. During the process of updating the park, there will be substantial changes
to the amenities. While the majority of the trees in the park can be retained and protected, based on
the current site improvement plan, some trees will be heavily impacted and require removal.
Per the City of San Luis Obispo’s Tree Regulations Chapter 12.24, all native oak trees 10-inches in
diameter and greater, and all non-native trees 20-inches in diameter or greater require approval for
removal via the applicable ministerial or discretionary permit application process. Removals meeting or
exceeding the size limits require mitigation on site at a ratio of 1:1. Offsite mitigation planting shall be
replaced at a 2:1 ratio.
Tree protection measures must be implemented before construction begins. Oversight of construction
crews by the project arborist or city arborist will be required when working within or adjacent to the
critical root zone (CRZ) of a protected tree. Refer to Appendix A - Tree Inventory and Tree Protection
Table. See also Attachment 1– Tree inventory and Tree Protection Map for individual tree details.
Methodology
Tree Diameter Measurements
Diameter at Standard Height (DSH) was measured at 4.5’ above ground. For multi-stem trees
that divided below 4.5’, if at least 1 stem met the minimum diameter criteria for the species, I
measured below the division at the narrowest point on the trunk. If it was not possible to
measure below the division, I measured each stem individually, then squared the diameter of
each stem. Finally, I summed the squared diameters and took the square root of the sum to get
the calculated diameter of the tree.
Critical Root Zone Measurements
Critical Root Zones (CRZs) were determined by giving a radius of 1-foot per every inch of tree
diameter. E.g., a 12-inch diameter tree would have a 12-foot CRZ radius measured from the
outside of the trunk.
Tree Protection Zone Measurements
Generally, tree protection zone (TPZ) distances follow the distances listed for CRZs. However, if
encroachments were allowed if structural roots or the health of the tree would not be
compromised, TPZs were adjusted to accommodate the design. Trees with significant
encroachments into CRZs were called out for on-site observations of work by the project
arborist to ensure unscary damage to the tree was not caused.
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3
Tree Condition Ratings
All trees in the inventory were given a condition rating. The rating was based on the health,
structure and presence of disease and insects. See the following definitions:
1. Dead = Severely declining or no foliage, large dead branches, decay cavities, loss of bark,
roots decayed or dead.
2. Very Poor = Evidence of multiple large past failures, advanced disease, uncontrollable
pest infestations or disease infection. Tree in severe decline.
3. Poor = Tree may be suppressed, drought stressed, or had at least 1 large branch failure.
Disease or pest infestations may be present. Can potentially be retained with attention
to mitigation pruning, cultural care changes, pest and disease control.
4. Fair = May have had minor past failures. Some pests or structural defects may be
present, small deadwood. Minor to moderate drought stress present. Defects may be
mitigated with pruning and pests can be controlled.
1. Good = A relatively healthy tree with minor to no structural defects with minimal to no
pest observed. Defects can be mitigated with pruning and pests can be controlled.
2. Very Good = Trees that have had professional arboricultural care. No structural defects,
disease or pests identified.
3. Excellent = Specimen tree with superior form, root structure and health. Tree has been
regularly cared for by professional arborists over its lifetime, E.g., estate or arboretum
tree.
Trees Inventoried
In total, I inventoried fifty-four (54) trees. According to the City of San Luis Obispo tree ordinance,
Municipal Code Chapter 12.24, all trees that will potentially be impacted by construction are required to
be inventoried. I inventoried all landscape trees within the project limits that measured 2 inch diameter
and larger with heights of 4.5’ or greater. Only trees at or above the City’s size threshold require
approval for removal.
The complete inventory, including tree numbers, species, CRZ and TPZ measurements, is provided in
Appendix A - Tree Inventory and Tree Protection Table. I numbered all trees in the field with pre-printed
metal tags that were attached between 4 and 6 feet above ground. Tag numbers assigned were 50-103.
All inventoried trees were plotted on the Tree Inventory & Tree Protection Map included as Attachment
1 of this report.
Tree Removals
Nine (9) trees have been recommended for removal. They are trees 54, 72, 81, 82, 86, 87, 88, 101 & 102
will require removal due to construction impacts. The majority were small diameter specimens that
were below the size limit for requiring a permit or replacement. One third of the trees listed for removal
were in poor condition due to disease and structural issues. The remaining two thirds were primarily in
fair condition with one (1) tree listed in good condition. Appendix A - Tree Inventory and Tree Protection
Table provides complete details regarding each tree. Below I have provided the primary reason for
removal of each tree in the list below.
Page 47 of 97
4
• 54 - Impacts from demolition and reinstall of asphalt and city sidewalk will affect approximately
80% of the critical root zone. The impacts to the roots will cause further decline to this already
stressed tree.
• 72 - Demolition of hardscape around tree will impact 100% of its critical roots and kill the tree.
• 81 - Critical roots will be severely impacted by install of underground utilities and demolition
and construction of asphalt.
• 82 - Critical roots will be severely impacted by install of underground utilities and demolition
and construction of asphalt.
• 86 - Tree is in construction envelope for new bathroom and sidewalk. Impact too great to retain
tree.
• 87 - Tree in footprint of new sidewalk. Impact too great to retain tree.
• 88 - Tree in footprint of new sidewalk. Impact too great to retain tree.
• 101 - Tree is in conflict with proposed perimeter fencing.
• 102 - Tree is in conflict with proposed perimeter fencing.
Tree Replacements
Trees 54 and 101 are at or above the size limits that require mitigation. Tree 54 is a 28” diameter non-
native Brazilian Pepper and Tree 101 is a 10” diameter native coast live oak. In addition to the new trees
included in your landscape plan, more trees may need to be replaced to compensate for the removals I
have recommended. Typically, the ratio for replacement is 1:1. If additional mitigation trees are
required, the exact number of trees to be replaced shall be determined by the city’s community
development director.
Impacted Trees
There were several trees within this project that will be impacted to some degree. Whereas minor
impacts are tolerable, impacts of over 25% to the critical root zone or CRZ can cause stress on the trees.
Trees with high percentage impacts to their CRZs were 52,53,68,69,70,71,73,74 and 90-97.
This site is unique in that some of the impacts are simply caused from the removal of existing landscape
vegetation around the trees. A tree listed in this inventory that has all of the landscaping removed in its
CRZ may have an impact percentage rating of up to 60%. However, the actual damage caused by
removal of the plant material, if completed by hand, will likely be nominal. Hand removal of small plants
is less invasive than the use of a mini excavator or rototiller and will not significantly disturb critical
roots. Trees in this category are 68-71, 73 & 74.
Page 48 of 97
5
Another example of high impact percentage rating with lower actual impact is where decomposed
granite (DG) is being replenished or newly installed. In this case the CRZ could have a rating of 50% but if
the DG is hand removed and replacement DG is not compacted by a machine, the actual damage to
roots will be low.
Finally, trees 52 & 53 have higher potential for root damage because hardscape is proposed for removal
within their CRZs. The assessed impacts to critical roots are 50%.
However, if the work is completed with hand operated jackhammers and the debris are removed by
hand, as I have prescribed, the impact to critical roots will be much lower. The final design will actually
provide more favorable root space for the trees to grow into.
In both instances, I have allowed for the encroachment into the CRZs but with special instructions to be
followed. They include hand grubbing of plant material, no tilling or machine use, hand demolition of
hardscape and finally hand planting of new landscape material within the CRZ of trees. Additionally, I am
requiring oversight be provided by the project arborist when construction crews are performing work in
the critical root zone of trees. Oversight of construction crews will be absolutely essential to preserving
critical roots and ultimately, to the success of the trees when the project is complete.
Tree Protection Requirements
Critical Root Zones were determined by giving a radius of 1-foot per every inch of tree diameter. E.g., a
12-inch diameter tree would have a 12-foot CRZ radius measured from the outside of the trunk.
Distances for CRZs and TPZs are listed in the Tree Inventory & Tree Protection Table included in
Appendix A. Trees requiring arborist supervision are also called out in Appendix A.
TPZ fencing and or trunk protection shall be provided for all trees listed for tree protection in the
inventory provided in Appendix A. All TPZ fencing shall be set according to specifications listed in
Appendix A. Delineations and distances are also shown on the Tree Inventory and Tree Protection Map
provided as Attachment 1. Tree protection signs shall be placed on the TPZ fencing and be spaced 10
feet apart. Signs shall be weatherproof, and state, “Tree Protection Zone – Do Not Enter.” The signs shall
also include the project arborist’s phone number. Signs shall remain in place until completion of the
project. See Appendix B – Tree Protection Diagrams - Diagrams 1 & 3 for further detail.
Where it was not feasible to have tree protection fencing installed due to construction access needs,
tree protection signs marking the TPZ area shall be used.
No construction or ground disturbance shall be allowed inside the fenced TPZ without the project
arborist’s permission and/or oversite. If you are unsure whether an activity is allowed, refer to Appendix
C - Tree Protection Requirements – Quick Reference List and contact the project arborist, Rodney
Thurman, at 805 234 8760.
Tree Specific Protection Measures
The majority of the trees on site will be retained and protected. It is critical that all tree protection
measures be installed and maintained. Tree protection fencing, tree protection zone signage and trunk
protection are required to be in place for the duration of the construction project and shall be installed
before starting any ground disturbing activities.
Page 49 of 97
6
Do not remove any tree protection fencing, signage or enter the TPZ without approval of the project
arborist. Refer to Attachment 1 – Sheet TPP-1 -Tree Inventory and Tree Protection Plan Map for
delineation if TPZ areas and “call outs” for all tree protection measures.
Trees requiring TPZ fencing are 55-68, 73-80, 83,85,89,90,99,100 and 103. Tree Protection Fencing shall
be installed according to the TPZ distances prescribed in Appendix A – Tree Inventory & Tree Protection
Table.
The fencing shall be 4 feet tall and made of orange, high density, polyethylene with 3.5” x 1.5” openings.
It shall be installed on steel posts 8 feet on center and tightly stretched to prevent sagging. See
Appendix B - Tree Protection Diagrams - Diagram 1 – Tree Protection Fencing.
There were several location within the project where it was not feasible to fence a TPZ. In that case tree
protection signage marking the perimeter of the specific TPS was prescribed. The following trees require
TPZ signage but no TPZ fencing. 52,53,70,71 and 90-97.
Trees requiring trunk protection are 50-53, 57-71 and 90-97. See Tree Protection Notes in Appendix A
for this requirement. Trunk protection shall be installed by placing 2x4’s against the trunk and securing
them with zip-ties or wire. Do not anchor wood or wire directly to trunk. See Appendix B - Tree
Protection Diagrams – Diagram 2 for further instruction.
Construction Oversite by Project Arborist
Trees 52,53,62,68-71,73-75,78,79 and 89-97 will have significant encroachments into their CRZs and will
require all construction activities be monitored by the project arborist. The project arborist will provide
guidance to the crews to ensure that the least amount of disturbance to the trees is caused. If a tree is
listed for oversight no work shall occur without the project arborist being present. Refer to Appendix A-
Tree Inventory and Tree Protection Table for instructions. Refer to Attachment 1 – Sheet TPP-1 -Tree
Inventory and Tree Protection Plan Map for tree locations.
Pre-Construction Meeting
Prior to any construction or ground disturbing activities, the project arborist shall meet with all parties
involved with the construction of the park to review tree protection measures. Any new contractors
brought on site shall also meet with the Project Arborist to ensure they are aware of all tree protection
measures.
Conclusion
Eighty-four (84) percent of trees on site have been listed for retention and protections. Only nine (9)
trees have been recommended for removal. The majority the removals were small diameter specimens,
in poor to fair condition, that were below the size limit for requiring a permit or replacement.
When the project is complete, the gain of trees from the installation of new landscape and mitigation
plantings will exceed the loss of the removals.
Page 50 of 97
7
Oversight of construction crews by the project arborist will be extremely important to ensure the
protection and long term survival of trees that will have encroachment into their critical root zones. If all
tree protection measures are implemented and construction crews are overseen by the project arborist
as directed by this report, I do not anticipate any tree loss beyond those listed for removal.
Respectfully Submitted,
Rodney D. Thurman
ISA Board Certified Master Arborist PN-2684BUM
ISA Urban Forest Professional - ISA Utility Arborist - ISA Tree Risk Assessor Qualification
Appendices: tree inventory & tree protection table, tree protection diagrams, tree protection
requirements quick reference list.
Attachments: (tree inventory & protection map)
Page 51 of 97
8
Appendix A – Tree Inventory & Tree Protection Table
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
50 American
Sweet Gum
Liquidambar
styraciflua Good 25
Healthy single stem
tree. Regularly
maintained. No
significant structural
or disease issues
1
No anticipated
impact from
demolition. New
perimeter fence
will be installed
which may cause
minor impact to
roots.
25
Does not require tree
protection fencing. Provide
trunk protection per
Appendix B - Diagram 2 of
arborist report or Tree
Protection Map in plan set
sheet TPP-1 or for trunk
protection installation
guidance.
51 American
Sweet Gum
Liquidambar
styraciflua Fair 28
Healthy single stem
tree. Regularly
maintained.
Included bark at co-
dominant branch
attachment is prone
to failure. Requires
maintenance
pruning. No
significant disease
issues.
1
No anticipated
impact from
demolition. New
perimeter fence
will be installed
which may cause
minor impact to
roots.
28
Does not require tree
protection fencing. Provide
trunk protection per
Appendix B - Diagram 2 of
arborist report or Tree
Protection Map in plant set
sheets TPP-1 or for trunk
protection installation
guidance.
Page 52 of 97
9
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
52 Brazilian
Pepper
Schinus
terebinthifoli
us
Fair 36
Single stem tree.
Drought stressed.
Not regularly
maintained. Small
dead wood. No
significant structural
or disease issues.
Requires
maintenance
pruning.
50
Asphalt demolition
may heavily impact
the critical roots.
New perimeter
fence will be
installed and may
cause minor
impact to roots.
36
All work and root pruning
requires supervision by
project arborist. Create
single rectangular TPZ to
include trees 52 & 53.
Provide trunk protection
guards before demolition.
Install tree protection
signage after demolition.
Saw cut and demo asphalt
with jackhammer and
remove by hand. Do not
install root barriers. Refer to
Appendix B - Diagrams 2 & 3
of arborist report and Tree
Protection Map sheet TPP-1
of plan set for signage &
trunk protection installation
guidance. Set TPZ signage as
shown on Tree Protection
Map TPP-1.
Page 53 of 97
10
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
53 Coast
Redwood
Sequoia
sempervirens Good 26
Single stem tree.
Regularly
maintained. No
significant structural
or disease issues.
75
Asphalt demolition
may heavily impact
the critical roots.
New perimeter
fence will be
installed and may
cause minor
impact to roots.
26
All work and root pruning
requires supervision by
project arborist. Create
single rectangular TPZ to
include trees 52 & 53.
Provide trunk protection
guards before demolition.
Install tree protection
signage after demolition.
Saw cut and demo asphalt
with jackhammer and
remove by hand. Do not
install root barriers. Refer to
Appendix B- Diagrams 2 & 3
of arborist report and Tree
Protection Map sheet TPP-1
of plan set for signage &
trunk protection installation
guidance. Set TPZ signage as
shown on Tree Protection
Map TPP-1.
54 Brazilian
Pepper
Schinus
terebinthifoli
us
Poor 28
Single stem tree.
Drought stressed.
Not regularly
maintained. Small
dead wood. Missing
large area of missing
bark and decay on
lower trunk. Not
regularly
maintained.
80
Impacts from
demolition and
reinstall of asphalt
and city sidewalk
will affect
approximately 80%
of the critical root
zone. The impacts
to the roots will
cause further
decline to this
already stressed
tree.
X X 28 Remove tree and replace 1:1
on site.
Page 54 of 97
11
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
55 Coast Live
Oak
Quercus
agrifolia Good 20
Single stem tree
with corrected lean.
Not regularly
maintained. No
significant structural
or disease issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
0
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
20
No heavy machine use or
rototilling within CRZ of tree.
Provide tree protection
fencing to create combined
TPZ for trees 55 & 56. Refer
to Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for fencing
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
56 Chinese
Pistache
Pistacia
chinensis Fair 7
Single stem tree.
Suppressed canopy
from tree 55. Not
regularly
maintained. No
significant structural
or issues. Requires
maintenance
pruning.
0
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
7
No heavy machine use or
rototilling within CRZ of tree.
Provide tree protection
fencing to create combined
TPZ for trees 55 & 56. Refer
to Appendix B - Diagram 1 of
arborist report
57 Coast Live
Oak
Quercus
agrifolia Fair 19
Single stem tree
with corrected lean
Not regularly
maintained. No
significant disease
issues. Large branch
with decay @ 8’.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
19
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Provide tree
protection fencing and trunk
protection guards. Refer to
Appendix B - Diagrams 1 & 2
of arborist report and Tree
Protection Map sheet TPP-1
of plan set for fencing &
trunk protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 55 of 97
12
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
58 Coast Live
Oak
Quercus
agrifolia Good 29
Single stem tree.
Not regularly
maintained. No
significant structural
or disease issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
29
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Provide tree
protection fencing and trunk
protection guards. Refer to
Appendix B - Diagrams 1 & 2
of arborist report and Tree
Protection Map sheet TPP-1
of plan set for fencing &
trunk protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 56 of 97
13
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
59 Olive Olea
europaea Poor 46
Single stem tree.
Was topped at 12’.
May have decay @
topping cut.
Regrowth branches
have formed new
canopy. Not
regularly
maintained. No
significant disease
issues. Requires
maintenance
pruning.
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
46
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Create single TPZ to
include trees 59-61. Provide
tree protection fencing and
trunk protection guards.
Refer to Appendix B -
Diagrams 1 & 2 of arborist
report and T ree Protection
Map sheet TPP-1 of plan set
for fencing & trunk
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 57 of 97
14
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
60 Black Locust Robinia
pseudoacacia Poor 47
Tree is unique
because it has
Brazilian pepper
growing out of main
trunk. Single stem
tree with corrected
lean. Not regularly
maintained.
Significant decay in
all scaffold
branches. No
significant disease
issues.
Overextended
branches should be
reduce 50% or
more. Extreme
pruning needed to
reduce risk.
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
47
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Create single TPZ to
include trees 59-61. Provide
tree protection fencing and
trunk protection guards.
Refer to Appendix B -
Diagrams 1 & 2 of arborist
report and T ree Protection
Map sheet TPP-1 of plan set
for fencing & trunk
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 58 of 97
15
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
61 Coast Live
Oak
Quercus
agrifolia Fair 27
Single stem tree
with corrected lean.
Recent branch
failure. Decay in
ranch upper canopy.
Not regularly
maintained. No
significant disease
issues.
Overextended &
decayed branches
should be reduced/
removed. Requires
maintenance
pruning.
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
27
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Create single TPZ to
include trees 59-61. Provide
tree protection fencing and
trunk protection guards.
Refer to Appendix B -
Diagrams 1 & 2 of arborist
report and T ree Protection
Map sheet TPP-1 of plan set
for fencing & trunk
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 59 of 97
16
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
62 Chinese
Pistache
Pistacia
chinensis Fair 8
Single stem tree.
Suppressed canopy
from tree 63. Not
regularly
maintained. No
significant structural
or issues. Requires
maintenance
pruning.
5
Potential impact
from removal/
replace of stairs
and wall. All work
and root pruning
requires
supervision by
project arborist.
8
All work and root pruning
requires supervision by
project arborist. No heavy
machine use or rototilling
within CRZ of tree. Hand
demolish and remove stairs
and wall. Create single TPZ to
include trees 62,63, 64 & 65.
Provide tree protection
fencing and trunk protection
guards. Refer to Appendix B -
Diagrams 1 & 2 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for fencing & trunk
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 60 of 97
17
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
63 Coast Live
Oak
Quercus
agrifolia Good 26
Single stem tree.
Not regularly
maintained. No
significant structural
or disease issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
26
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Create single TPZ to
include trees 62,63, 64 & 65.
Provide tree protection
fencing and trunk protection
guards. Refer to Appendix B -
Diagrams 1 & 2 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for fencing & trunk
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 61 of 97
18
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
64 Coast Live
Oak
Quercus
agrifolia Fair 22
Single stem tree.
Suppressed by tree
63. Overextended
branches. Not
regularly
maintained. No
significant disease
issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
22
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Create single TPZ to
include trees 62,63, 64 & 65.
Provide tree protection
fencing and trunk protection
guards. Refer to Appendix B -
Diagrams 1 & 2 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for fencing & trunk
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 62 of 97
19
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
65 Chinese
Pistache
Pistacia
chinensis Fair 7
Single stem tree.
Suppressed canopy
from tree 64. Not
regularly
maintained. No
significant structural
or issues. Requires
maintenance
pruning.
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
7
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Create single TPZ to
include trees 62,63, 64 & 65.
Provide tree protection
fencing and trunk protection
guards. Refer to Appendix B -
Diagrams 1 & 2 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for fencing & trunk
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 63 of 97
20
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
66 Coast Live
Oak
Quercus
agrifolia Good 22
Single stem tree.
Not regularly
maintained. No
significant structural
or disease issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
22
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Create single TPZ to
include trees 66 & 67.
Provide tree protection
fencing and trunk protection
guards. Refer to Appendix B -
Diagrams 1 & 2 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for fencing & trunk
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 64 of 97
21
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
67 Coast Live
Oak
Quercus
agrifolia Good 26
Single stem tree.
Not regularly
maintained. No
significant structural
or disease issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning
2
Potential impact
from removal/
replace of
perimeter fence.
Contact project
arborist for tree
protection
direction if root
disturbance is
necessary.
26
No heavy machine use or
rototilling within CRZ of tree.
Hand remove old chain-link
fencing. Create single TPZ to
include trees 66 & 67.
Provide tree protection
fencing and trunk protection
guards. Refer to Appendix B -
Diagrams 1 & 2 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for fencing & trunk
protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 65 of 97
22
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
68 Aleppo Pine Pinus
halepensis Fair 42
Multi stem.
Measured at base.
Corrected lean. Not
regularly
maintained. No
significant disease
issues. Large, failed
branch in canopy.
Overextended
branches should be
reduced & broken
removed. Requires
maintenance
pruning.
40
Impacts from
demolition turf and
landscape can be
harmful to critical
roots. Construction
of playground may
encounter roots
also. Large root
damage is not
anticipated.
42
All work in CRZ and root
pruning requires supervision
by project arborist.
Demolish concrete curb by
hand. Hand grub landscape
plants. Remove fence by
hand. No heavy machine use
or rototilling within CRZ of
tree. Remove turf with hand
operated turf cutting
machine. Cut only to a depth
of 2 inches. Provide trunk
protection guards. Refer to
Appendix B - Diagrams 1 &2
of arborist report and Tree
Protection Map sheet TPP-1
of plan set for fencing &
trunk protection installation
guidance. Set TPZ fencing as
shown on Tree Protection
Map TPP-1.
Page 66 of 97
23
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
69 Ornamental
Pear
Pyrus
calleryana Poor 15
Poorly attached &
overextended
branches. Fire blight
disease. Not
regularly
maintained.
Requires
maintenance
pruning.
60
Impacts from
demolition turf and
landscape can be
harmful to critical
roots. Installation
of landscape&
construction of
playground may
encounter roots
also. Large root
damage is not
anticipated.
15
All work in CRZ and root
pruning requires supervision
by project arborist.
Demolish concrete curb by
hand. Hand grub landscape
plants. Remove fence by
hand. No heavy machine use
or rototilling within CRZ of
tree. Prune roots 1/2"
diameter and larger if
encountered. Remove turf
with hand operated turf
cutting machine. Cut only to
a depth of 2 inches. Install
new landscape plants by
hand. Provide tree
protection signage and trunk
protection guards. Refer to
Appendix B - Diagrams 2 & 3
of arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection signage & trunk
protection installation
guidance. Set TPZ signage as
shown on Tree Protection
Map TPP-1.
Page 67 of 97
24
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
70 Ornamental
Pear
Pyrus
calleryana Poor 15
Poorly attached &
overextended
branches. Fire blight
disease. Not
regularly
maintained.
Requires
maintenance
pruning.
60
Impacts from
demolition of
hardscape, turf
and landscape can
be harmful to
critical roots.
Installation of
landscape may
encounter roots
also. Large root
damage is not
anticipated.
15
All work in CRZ and root
pruning requires supervision
by project arborist.
Demolish concrete curb by
hand. Hand grub landscape
plants. Remove fence by
hand. No heavy machine use
or rototilling within CRZ of
tree. Prune roots 1/2"
diameter and larger if
encountered. Remove turf
with hand operated turf
cutting machine. Cut only to
a depth of 2 inches. Install
new landscape plants by
hand. Provide tree
protection signage and trunk
protection guards. Refer to
Appendix B - Diagrams 2 & 3
of arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection signage & trunk
protection installation
guidance. Set TPZ signage as
shown on Tree Protection
Map TPP-1.
Page 68 of 97
25
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
71 Ornamental
Pear
Pyrus
calleryana Poor 14
Poorly attached &
overextended
branches. Fire blight
disease. Not
regularly
maintained.
Requires
maintenance
pruning.
60
Impacts from
demolition and
reconstruction of
stairs as well as
grubbing of
existing landscape
will impact critical
roots. Larger roots
may need to be
cut.
14
All work in CRZ and root
pruning requires supervision
by project arborist.
Demolish concrete by hand.
Hand grub landscape plants.
Remove fence by hand. No
heavy machine use or
rototilling within CRZ of tree.
Prune roots 1/2" diameter
and larger if encountered.
Install new landscape plants
by hand. Provide tree
protection signage and trunk
protection guards. Refer to
Appendix B - Diagrams 2 & 3
of arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection signage & trunk
protection installation
guidance. Set TPZ signage as
shown on Tree Protection
Map TPP-1.
72 Ornamental
Pear
Pyrus
calleryana Poor 14
Poorly attached &
overextended
branches. Fire blight
disease. Not
regularly
maintained.
100
Demolition of
hardscape around
tree will impact
100% of its critical
roots and kill the
tree.
X 14
Remove tree. Tree below
limit for mitigation. No
replanting required unless
otherwise directed by City of
SLO Arborist
Page 69 of 97
26
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
73 Holly Oak Quercus ilex Good 5
Young tree.
Corrected lean. Not
regularly
maintained. No
significant structural
or disease issues.
Requires
maintenance
pruning.
50
Removal of existing
landscape will
impact critical
roots.
5
All work in CRZ and root
pruning requires supervision
by project arborist. No
heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only. Provide
tree protection fencing.
Provide tree protection
fencing. Refer to Appendix B
- Diagram 1 of arborist report
and Tree Protection Map
sheet TPP-1 of plan set for
tree protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 70 of 97
27
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
74 Holly Oak Quercus ilex Good 6
Young tree. Not
regularly
maintained. No
significant structural
or disease issues.
Requires
maintenance
pruning.
50
Removal of existing
landscape will
heavily impact
critical roots.
6
All work in CRZ and root
pruning requires supervision
by project arborist. No
heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only. Provide
tree protection fencing.
Refer to Appendix B -
Diagram 1 of arborist report
and Tree Protection Map
sheet TPP-1 of plan set for
tree protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 71 of 97
28
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
75 Ornamental
Pear
Pyrus
calleryana Poor 12
Poorly attached &
overextended
branches. Fire blight
disease. Not
regularly
maintained.
Requires
maintenance
pruning.
5
Removal of existing
landscape will
slightly impact
critical roots.
12
All work in CRZ and root
pruning requires supervision
by project arborist. No
heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only. Provide
tree protection fencing.
Refer to Appendix B -
Diagram 1 of arborist report
and Tree Protection Map
sheet TPP-1 of plan set for
tree protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 72 of 97
29
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
76 Ornamental
Pear
Pyrus
calleryana Poor 8
Poorly attached &
overextended
branches. Fire blight
disease. Not
regularly
maintained.
Requires
maintenance
pruning.
0
Tree is outside the
active construction
area but within the
project limits. No
anticipated
impacts
8
No heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Provide tree
protection fencing along
edge of existing walk to
protect trees 76-79. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 73 of 97
30
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
77 Ornamental
Pear
Pyrus
calleryana Poor 14
Poorly attached &
overextended
branches. Fire blight
disease. Not
regularly
maintained.
Requires
maintenance
pruning.
0
Tree is outside the
active construction
area but within the
project limits. No
anticipated
impacts
14
No heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Provide tree
protection fencing along
edge of existing walk to
protect trees 76-79. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 74 of 97
31
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
78 Coast Live
Oak
Quercus
agrifolia Fair 3,5,7
3 stem tree. Not
regularly
maintained. No
significant disease
issues. Poorly co-
dominant stems
prone to failure.
Requires
maintenance
pruning.
25
Demolition of
planter around
Tree 22 may
slightly impact
critical roots.
9
All work in CRZ and root
pruning requires supervision
by project arborist. No
heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Prune roots 1/2"
diameter and larger if
encountered. Provide tree
protection fencing along
edge of existing walk to
protect trees 76-79. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 75 of 97
32
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
79 Coast Live
Oak
Quercus
agrifolia Fair 4,4,7
3 stem tree . Not
regularly
maintained. No
significant disease
issues. Poorly co-
dominant stems
prone to failure.
Requires
maintenance
pruning.
5
Tree will be
minimally
impacted by
construction new
sidewalk.
9
All work in CRZ and root
pruning requires supervision
by project arborist. No
heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Prune roots 1/2"
diameter and larger if
encountered. Provide tree
protection fencing along
edge of existing walk to
protect trees 76-79. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 76 of 97
33
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
80 Coast Live
Oak
Quercus
agrifolia Poor 4
Single stem. Good
form. Decay @
base. Not regularly
maintained. No
significant disease
issues.
0
No anticipated
impacts. Contact
project arborist for
tree protection
direction if root
disturbance is
necessary.
4
No heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Provide tree
protection fencing. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
81 Coast Live
Oak
Quercus
agrifolia Poor 3,4,4
3 stem. Good form.
Not regularly
maintained.
Phytophthora
disease canker on
low trunk. Tree is
below city's
diameter that
requires mitigation.
100
Critical roots will
be severely
impacted by install
of underground
utilities and
demolition and
construction of
asphalt.
X 6
Remove tree. Tree below
limit for mitigation. No
replanting required unless
otherwise directed by City of
SLO Arborist.
82 Coast Live
Oak
Quercus
agrifolia Fair 5,6
2 stem. Good form.
No significant
structural or disease
issues. Tree is below
city's diameter that
requires mitigation.
100
Critical roots will
be severely
impacted by install
of underground
utilities and
demolition and
construction of
asphalt.
X 7
Remove tree. Tree below
limit for mitigation. No
replanting required unless
otherwise directed by City of
SLO Arborist.
Page 77 of 97
34
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
83 Coast Live
Oak
Quercus
agrifolia Good 7
Good form. No
significant structural
or disease issues.
Has not been
regularly
maintained.
0
No anticipated
impacts. Contact
project arborist for
tree protection
direction if root
disturbance is
necessary.
7
No heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Provide tree
protection fencing. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
84 American
Sweet Gum
Liquidambar
styraciflua Fair 2
Good form. No
significant structural
or disease issues.
Has not been
regularly
maintained.
0
No anticipated
impacts. Contact
project arborist for
tree protection
direction if root
disturbance is
necessary.
2
No heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Provide tree
protection fencing. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 78 of 97
35
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
85 Coast Live
Oak
Quercus
agrifolia Fair 4
Good form. No
significant structural
or disease issues.
Has not been
regularly
maintained.
1
Impact from
construction of
new bathroom
may slightly impact
critical roots.
4
No heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Provide tree
protection fencing. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
86 American
Sweet Gum
Liquidambar
styraciflua Fair 2
Good form. No
significant structural
or disease issues.
Has not been
regularly
maintained. Tree is
below city's
diameter that
requires mitigation.
50
Tree is in
construction
envelope for new
bathroom and
sidewalk. Impact
too great to retain
tree.
X 2
Remove tree. Tree below
limit for mitigation. No
replanting required unless
otherwise directed by City of
SLO Arborist.
87 American
Sweet Gum
Liquidambar
styraciflua Fair 3
Good form. No
significant structural
or disease issues.
Has not been
regularly
maintained. Tree is
below city's
diameter that
requires mitigation.
100
Tree in footprint of
new sidewalk.
Impact too great to
retain tree.
X 3
Remove tree. Tree below
limit for mitigation. No
replanting required unless
otherwise directed by City of
SLO Arborist.
Page 79 of 97
36
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
88 Crape Myrtle
Lagerstroemi
a indica (and
hybrids)
Good
1,1,1
,1,1,
1,1,1
,1,1,
1,1,1
Multi stem tree with
13 stems measuring
1' diameter. Good
form. No significant
structural or disease
issues. Tree is below
city's diameter that
requires mitigation.
100
Tree in footprint of
new sidewalk.
Impact too great to
retain tree.
X 6
Remove tree. Tree below
limit for mitigation. No
replanting required unless
otherwise directed by City of
SLO Arborist.
Page 80 of 97
37
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
89 Jacaranda Jacaranda
mimosifolia Poor 8
Tree has severe
drought stress and
fungal root
infection. Significant
crown die back.
25
Demolition and
construction of
new walkway may
impact critical
roots.
8
All work in CRZ and root
pruning requires supervision
by project arborist. No
heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Prune roots 1/2"
diameter and larger if
encountered. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 81 of 97
38
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
90 Coast Live
Oak
Quercus
agrifolia Good 23
Single stem tree.
Not regularly
maintained. No
significant structural
or disease issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
25
Construction of
sidewalk will
moderately impact
critical roots.
23
All work in CRZ and root
pruning requires supervision
by project arborist. No
heavy machine use or
rototilling within CRZ of tree.
Hand dig forms for sidewalk.
Prune roots 1/2" diameter
and larger if encountered.
Leave current decomposed
granite (DG) in place and
refresh with new dressing of
DG. Rake, hand roll and
water settle DG material. No
compaction. Demolish any
other landscape features by
hand with jackhammer or
hand tools. Hand plant only.
Tree protection fencing not
feasible for entire area.
Provide tree protection
fence along northwest side
of tree. Provide tree
protection zone signage for
remainder of TPZ. Provide
trunk protection guards.
Refer to Appendix B -
Diagrams 1, 2 & 3 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for tree protection fencing,
signage and trunk protection
installation guidance. Set TPZ
fencing & signage as shown
on Tree Protection Map TPP-
1. Set TPZ signage as shown
on Tree Protection Map TPP-
1.
Page 82 of 97
39
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
91 Coast Live
Oak
Quercus
agrifolia Good 13
Single stem tree.
Not regularly
maintained. No
significant structural
or disease issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
50
Area is listed for
demolish &
remove
decomposed
granite. This
activity will
severely impact
the critical roots of
this tree. See tree
protection notes
for alternative.
13
Requires supervision of
work by project arborist.
Leave current decomposed
granite (DG) in place and
refresh with new dressing of
DG. Rake, hand roll and
water settle DG material. No
compaction. Demolish any
other landscape features by
hand with jackhammer or
hand tools. Tree protection
fencing not feasible. Provide
tree protection zone signage
and trunk protection guards.
Refer to Appendix B -
Diagrams 2 & 3 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for tree protection signage
and trunk protection
installation guidance. Set TPZ
signage as shown on Tree
Protection Map TPP-1.
Page 83 of 97
40
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
92 Coast Live
Oak
Quercus
agrifolia Good 13
Single stem tree.
Not regularly
maintained. No
significant structural
or disease issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
50
Area is listed for
demolish &
remove
decomposed
granite. As well as
landscape
grubbing. This
activity will
severely impact
the critical roots of
this tree. See tree
protection notes
for alternative.
13
Requires supervision of
work by project arborist.
Leave current decomposed
granite (DG) in place and
refresh with new dressing of
DG. Rake, hand roll and
water settle DG material. No
compaction. Demolish any
other landscape features by
hand with jackhammer or
hand tools. Hand plant only.
Tree protecti on fencing not
feasible. Provide tree
protection zone signage and
trunk protection guards.
Refer to Appendix B -
Diagrams 2 & 3 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for tree protection signage
and trunk protection
installation guidance. Set TPZ
signage as shown on Tree
Protection Map TPP-1.
Page 84 of 97
41
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
93 Coast Live
Oak
Quercus
agrifolia Good 12
Single stem tree.
Not regularly
maintained. No
significant structural
or disease issues.
Overextended
branches should be
reduced. Requires
maintenance
pruning.
50
Area is listed for
demolish &
remove
decomposed
granite. This
activity will
severely impact
the critical roots of
this tree. See tree
protection notes
for alternative.
12
Requires supervision of
work by project arborist.
Leave current decomposed
granite (DG) in place and
refresh with new dressing of
DG. Rake, hand roll and
water settle DG material. No
compaction. Demolish any
other landscape features by
hand with jackhammer or
hand tools. Hand plant only.
Tree protection fencing not
feasible. Provide tree
protection zone signage and
trunk protection guards.
Refer to Appendix B -
Diagrams 2 & 3 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for tree protection signage
and trunk protection
installation guidance. Set TPZ
signage as shown on Tree
Protection Map TPP-1.
Page 85 of 97
42
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
94 Chinese elm Ulmus
parvifolia Poor 11
Single stem tree.
Not regularly
maintained.
Overextended
branches.
Asymmetric crown.
Suppressed.
Overextended
branches should be
reduced. Requires
maintenance
pruning
50
Area is listed for
demolish &
remove
decomposed
granite. This
activity will
severely impact
the critical roots of
this tree. See tree
protection notes
for alternative.
11
Requires supervision of
work by project arborist.
Leave current decomposed
granite (DG) in place and
refresh with new dressing of
DG. Rake, hand roll and
water settle DG material. No
compaction. Demolish any
other landscape features by
hand with jackhammer or
hand tools. Tree protection
fencing not feasible. Provide
tree protection zone signage
and trunk protection guards.
Refer to Appendix B -
Diagrams 2 & 3 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for tree protection signage
and trunk protection
installation guidance. Set TPZ
signage as shown on Tree
Protection Map TPP-1.
Page 86 of 97
43
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
95 Chinese elm Ulmus
parvifolia Fair 15
Single stem tree.
Not regularly
maintained.
Overextended
branches.
50
Area is listed for
demolish &
remove
decomposed
granite. This
activity will
severely impact
the critical roots of
this tree. See tree
protection notes
for alternative.
15
Requires supervision of
work by project arborist.
Leave current decomposed
granite (DG) in place and
refresh with new dressing of
DG. Rake, hand roll and
water settle DG material. No
compaction. Demolish any
other landscape features by
hand with jackhammer or
hand tools. Tree protection
fencing not feasible. Provide
tree protection zone signage
and trunk protection guards.
Refer to Appendix B -
Diagrams 2 & 3 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for tree protection signage
and trunk protection
installation guidance. Set TPZ
signage as shown on Tree
Protection Map TPP-1.
Page 87 of 97
44
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
96 Chinese elm Ulmus
parvifolia Poor 13
Single stem tree.
Not regularly
maintained.
Overextended
branches.
Significant Elm
anthracnose
infection has caused
decay and
weakened structure
at branch scaffold
attachment.
Requires
maintenance
pruning to reduce
risk.
50
Area is listed for
demolish &
remove
decomposed
granite and
construction of
new garden bed.
This activity could
severely impact
the critical roots of
this tree. See tree
protection notes
for alternative.
13
Requires supervision of
work by project arborist.
Leave current decomposed
granite (DG) in place and
refresh with new dressing of
DG. Rake, hand roll and
water settle DG material. No
compaction. Demolish any
other landscape features by
hand with jackhammer or
hand tools. Hand plant only.
Tree protection fencing not
feasible. Provide tree
protection zone signage and
trunk protection guards.
Refer to Appendix B -
Diagrams 2 & 3 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for tree protection signage
and trunk protection
installation guidance. Set TPZ
signage as shown on Tree
Protection Map TPP-1.
Page 88 of 97
45
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
97 Chinese elm Ulmus
parvifolia Poor 16
Single stem tree.
Not regularly
maintained.
Overextended
branches.
Significant Elm
anthracnose
infection has caused
decay and
weakened structure
at branch scaffold
attachment.
Requires
maintenance
pruning to reduce
risk.
50
Area is listed for
construction of
new garden bed.
This activity will
only cause minimal
CRZ damage if no
machines are used.
See tree protection
notes for more
detail.
16
Requires supervision of
work by project arborist.
Leave current decomposed
granite (DG) in place and
refresh with new dressing of
DG. Rake, hand roll and
water settle DG material. No
compaction. Demolish any
other landscape features by
hand with jackhammer or
hand tools. Hand plant only.
Tree protection fencing not
feasible. Provide tree
protection zone signage and
trunk protection guards.
Refer to Appendix B -
Diagrams 2 & 3 of arborist
report and Tree Protection
Map sheet TPP-1 of plan set
for tree protection signage
and trunk protection
installation guidance. Set TPZ
signage as shown on Tree
Protection Map TPP-1.
98 Chinese Elm Ulmus
parvifolia
Remov
ed 15 Tree was removed
by City 15 Tree was removed by City
Page 89 of 97
46
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
99 American
Sweet Gum
Liquidambar
styraciflua Poor 19
2 stem tree.
Measured @ base
below division of
trunk. Not regularly
maintained.
Overextended
branches. Included
bark at co-dominant
stem attachment.
Root disease
causing trunk decay.
5
No anticipated
impact from soil
disturbance. If new
perimeter fence is
installed, it may
cause minor
impact to roots.
19
No heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Provide tree
protection fencing for trees
99, 100 & 103. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
100 Coast Live
Oak
Quercus
agrifolia Fair 7
Young tree.
Suppressed by tree
99. No significant
structural or disease
issues. Needs
maintenance
pruned.
5
No anticipated
impact from soil
disturbance. If new
perimeter fence is
installed, it may
cause minor
impact to roots.
7
No heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Provide tree
protection fencing for trees
99, 100 & 103. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
101 Coast Live
Oak
Quercus
agrifolia Fair 10
Young tree.
Suppressed by tree
99. No significant
structural or disease
issues. Has not been
regularly
maintained.
5
Tree is in conflict
with proposed
perimeter fencing.
X X 10 Remove tree and replace 1:1
on site.
Page 90 of 97
47
Tree
Site
#
Common Botanical Tree
Cond. DSH Observations
Health & Structure
%
Impact Impact Comments Remove
?
Mitigate
?
CRZ
Radius
Tree Protection
Notes/Requirements
102 American
Sweet Gum
Liquidambar
styraciflua Fair 4
Young tree 2 stem
tree. Suppressed by
tree 99. No
significant structural
or disease issues.
Has not been
regularly
maintained.
5
Tree is in conflict
with proposed
perimeter fencing.
X 4
Remove tree. Tree below
limit for mitigation. No
replanting required unless
otherwise directed by City of
SLO Arborist
103 American
Sweet Gum
Liquidambar
styraciflua Fair 4
Young tree. No
significant structural
or disease issues.
Needs maintenance
pruned.
0
No anticipated
impact from
demolition.
4
No heavy machine use or
rototilling within CRZ of tree.
Hand grubbing only if
landscape needs to be
removed. Provide tree
protection fencing for trees
99, 100 & 103. Refer to
Appendix B - Diagram 1 of
arborist report and Tree
Protection Map sheet TPP-1
of plan set for tree
protection fencing
installation guidance. Set TPZ
fencing as shown on Tree
Protection Map TPP-1.
Page 91 of 97
48
Appendix B - Tree Protection Diagrams
8.5” x 11” sign
laminated in
plastic, spaced
every 10’ along
the fence.
Diagram 1 – Tree Protection Fencing
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49
Diagram 2 – Trunk Protection – Secure wood to tree using zip ties or wire. Do not anchor wood or wire directly to trunk.
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50
Diagram 3 – Trunk Protection Zone Sign – Laminate and secure to tree protection fencing every 10 feet or attach to driven
stakes to indicate tree protection zone if no fencing is required.
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51
Appendix C - Tree Protection Requirements - Quick Reference List
1. Tree Protection During Construction - Tree protection shall be provided during the
entire time construction activities occur. A Tree Protection Zone (TPZ) shall be
established and maintained to ensure protected roots remain undisturbed.
2. Tree Protection Fencing - Tree protection fencing is required to be in place for the
duration of the construction project and shall be installed before starting any ground
disturbing activities. Do not remove any tree protection fencing or enter the TPZ
without approval of the project arborist. The fencing shall delineate and protect the tree
protection zone. The fencing shall be 4 feet tall and made of orange, high density,
polyethylene with 3.5” x 1.5” openings. It shall be installed on steel posts 8 feet on
center and tightly stretched to prevent sagging. See Appendix B - Tree Protection
Diagrams - Diagram 1 – Tree Protection Fencing.
3. Trunk Protection - Tree protection fencing is required See Appendix B - Tree Protection
Diagrams - Diagram 2 – Trunk Protection.
4. Tree Protection Signage - Weatherproof, tree protection signs stating “Tree Protection
Zone – Do Not Enter” shall be placed on the fencing and be spaced 10 feet apart. Signs
shall remain in place until completion of the project. See Appendix B - Tree Protection
Diagrams - Diagram 1 – Tree Protection Fencing.
5. Pre-Construction Meeting - A meeting with all contractors involved in the project shall
occur with the project arborist before beginning construction activities. Any new
contractors brought on site shall also meet or communicate with the project arborist to
ensure they are aware of tree protection measures.
6. Preparing Tree Protection Zone - If construction occurs during the months of June
through November, the TPZ’s shall be irrigated to a depth of 12 inches before
construction begins. This will ensure the trees are properly hydrated. Additional
irrigations during “heatwaves” may be recommended by the project arborist.
7. Root Protection - No grading, trenching, paving or any other soil disturbance shall occur
within or adjacent to the TPZ of the tree without permission and supervision by the
project arborist. No trenching or excavation for footings, foundations, utilities or
roadways shall occur within or adjacent to the TPZ without first, hand trenching the
location and exposing roots.
If possible, conduit or other utilities shall be “fished” below roots larger than 1-inch
diameter. Any roots 1-inch diameter or larger that are approved for pruning shall be
hand cut with a clean pruning saw or Sawzall. Once roots are hand cut, machinery can
remove the severed roots. Cutting any roots 1-inch diameter or larger requires
supervision by the project arborist.
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52
8. Root Pruning - If the project arborist determines that a root over 1-inch diameter needs
to be cut, it shall be cut by hand with a pruning saw or reciprocating saw “Sawzall”.
After cutting a root, the area shall be backfilled as soon as possible with moist soil or
covered with wet burlap until backfill can be completed. Burlap shall be kept wet the
entire time it is in use for cut-root protection.
9. Dumping, Cleanout or Storage of Materials - No construction materials, soils, or debris
shall be stored in the TPZ. No concrete, plaster, paint or chemical washout shall be
allowed within the TPZ or Critical Root Zone (CRZ).
10. Monitoring - An initial inspection shall be completed by the project arborist prior to
commencement of construction activities to ensure that all tree protection measures
have been put in place. Weekly inspections of the TPZ and associated fencing shall also
be completed by the project arborist until construction is complete. Any root pruning,
excavation, grading or filling within 5 feet of the TPZ shall be monitored by the project
arborist.
11. Project Arborist Contact Information - Rodney Thurman – Heritage Tree Arboricultural
Consulting Inc. – Cell: 805 234 8760 – Email: rodney@heritagetreeconsulting.com
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