DATE:
TO:
FROM:
CONTACT:
SUBJECT:
Summary:
AGENDA RE.PORT CityofPoway
CITY COUNCIL
May 16, 2023
Honorable Mayor and Members of the City : o~~
Eric Heidemann, Director of Public Works tJ1
Will Wiley, Assistant Director of Public Works for Maintenance Operations ~ (858) 668-4705 or [email protected] T
Landscape Maintenance District Advisory Group Update and Adoption of the Twin Peaks and Espola Road Landscape Master Plan
The Landscape Maintenance District (LMD) Advisory Group (Advisory Group) is made up of property owners within LM Ds 83-1 and 86-1 who were appointed by the former City Manager in 2018 to provide recommendations on landscape improvements and re-engineering strategies within the LMDs. The LMDs are facing ongoing financial challenges due to stagnant revenues since the 1990s while maintenance costs including prevailing wage, water costs, and electricity costs have continued to rise.
Staff continues to actively work to stabilize and reduce costs where possible and several of those strategies are described in this report. Based on changes to the California State Constitution since the districts were formed, in order to address the revenue shortfall, the City is required to go through what is referred to as a Proposition 218 ballot process. Consistent with Council direction, the Advisory Group has worked collaboratively with staff and the City's landscape architect on the development of a Landscape Master Plan (LMP) for the Twin Peaks and Es pol a Road corridors. This update will provide the City Council with the status of: (1) the LMP, including a request to adopt the LMP; (2) the Hazardous Mitigation Grant Program (HMGP) grant application; (3) the Advisory Group's ongoing effort to address landscape maintenance challenges and suggest a timeline for commencing the re-engineering process; and (4) to request City Council's direction on the Advisory Group's recommendation to renovate two entrances within LMDs 83-1 and 86-1.
Recommended Action:
It is recommended the City Council:
1. Receive and file this report;
2. Adopt the resolution to approve the Twin Peaks and Espola Road LMP; and
3. Provide direction to commence the re-engineering process for LMDs 83-1 and 86-1, and the Advisory Group's proposal to renovate two LMD entrances in the Fall 2023. 1 of 103
May 16, 2023, Item #9
Discussion:
The Advisory Group was formed in August 2018, after an unsuccessful Proposition 218 ballot process, to provide recommendations to staff and City Council for landscape maintenance and re-engineering strategies for LMDs 83-1 and 86-1. The Advisory Group has consistently worked to promote resident concerns and educate the community on the financial condition of the districts. In 2019, the City Council authorized the development of a Landscape Master Plan (LMP) for LMDs 83-1 and 86-1 that would provide appropriate drought tolerant landscaping options suitable to our area, and a thorough site analysis of the project areas. The LMP is intended to serve as a guide for the eventual re engineering of LMDs 83-1 and 86-1. Re-engineering is the process of identifying all the costs associated with landscape improvements and apportioning those costs as either "Special Benefit" or "General Benefit" pursuant to Proposition 218. This work is performed by a licensed assessment engineer. Based on resident feedback, the information contained in the LMP was also a critical element missing from the prior ballot effort. With City Council authorization, the landscape architects began to work on conceptual plans and commenced site and tree analysis for each project area.
Unfortunately, in 2020 the COVID-19 pandemic suspended work for over a year. Staff and the Advisory Group later resumed work and provided an update on maintenance recommendations to City Council on April 20, 2021. At that time, the LMP was 75% complete and the status of the HMGP was upgraded to Approved. In May 2021, staff executed a landscape maintenance standardized service agreement to reduce costs in LMDs 83-1 and 86-1 while maintaining or improving the existing maintenance service levels.
Landscape Master Plan Outreach: Starting in early 2022, the Advisory Group hosted eight neighborhood pop-up meetings to discuss the LMDs' native and drought tolerant trees and landscaping options, assessments, and the assessment balloting history. The landscape architects worked in conjunction with staff and the Advisory Group, to complete the LMP by conducting a community outreach survey of residents living in LMDs 83-1 and 86-1. Resident opinions on topics of landscaping, tree maintenance, and desired enhancement or improvements were gathered and analyzed. The results of the survey revealed the concerns and expectations of residents living in the respective LMDs. In April 2022, the landscape architects hosted two open community outreach workshops for residents of LMDs 83-1 and 86-1 with dedicated presentations of the LMP concepts for each district. Residents were invited to identify their preferences and prioritize concerns. The landscape architects completed the remaining deliverables and finalized the LMP taking into consideration information garnered through surveys, community workshops, and input from staff and the Advisory Group. The LMP will be used to support both staff and the Advisory Group's future re-balloting efforts.
Hazardous Mitigation Grant Project Update: In October 2021, the City hosted two community workshops called "Tree Talks" to present the public with an overview of the LMP with focus on the trees that line Poway's two key traffic corridors - emergency evacuation routes and, the strategic removal of hazardous trees. In April 2022, Phase 1 of the HMGP was completed. As part of this effort a certified arborist was engaged to inventory and assess the trees. Community outreach, planning, and documentation for environmental review were also completed during this time. In early March 2023, the California Office of Emergency Services (Cal OES) and the Federal Emergency Management Agency (FEMA) Environmental and Historic Preservation (EHP) team, along with representatives from the City and an environmental consultant, conducted a site visit to survey for cultural resources in preparation for Phase 2 of the project area. The group walked the areas included in the HMGP which includes sections of Twin Peaks Road, Espola Road and the Green Valley open space area. 2 of 103
May 16, 2023, Item #9
With Phase 1 complete, the City awaits final approval to move into Phase 2 -commencing tree removal and trimming . Staff will update the Council, along with community outreach, prior to execution of the project.
It is important to note that the objective of the HMGP is to reduce fire fuel loads along the Twin Peaks and Espola corridors. Once the project is complete, the future cost for tree maintenance and water will substantially decrease for LMDs 83-1 and 86-1.
Staff Recommendation: Staff is seeking direction from the City Council regarding the commencement of re-engineering efforts for LMDs 83-1 and 86-1. The re-engineering effort will rely on the overall reduced tree maintenance cost resulting from the removal of hazardous trees under the HMGP, the LMP and the renovation of two neighborhood entrances (described in the next section). Staff is recommending the City commence the re-engineering effort in Fall 2023.
Advisory Group Recommendation: The Advisory Group evaluated many options for addressing future maintenance and rehabilitation costs for LMDs 83-1 and 86-1. It is the Advisory Group's goal to provide support to re-ballot for an increase in assessments for LMDs 83-1 and 86-1. The Advisory Group supports staffs recommendation to solicit proposals in the Fall of 2023 to conduct a re engineering study and analysis of LMDs 83-1 and 86-1 to establish new assessments once the HMGP tree removal work is complete. The Advisory group is further recommending the renovation of two neighborhood entrances: LMD 83-1 (Twin Peaks Road at Silverset Street) and 86-1 (Espola at Sand Hill Road) and incorporating the LMP conceptual design to encourage increased assessment support along these corridors. Renderings of the proposed renovations are shown in Attachment C. The Advisory Group intends to use the renovated entrances as a tangible illustration of the potential result of increasing assessments. Due to the LMDs' financial condition, staff recommends these improvements be funded by a one-time contribution from the City's General Fund. The estimated cost to renovate the two entryways is approximately $44,000.
Next Steps: Should the City Council support the concept of the General Fund paying for the renovation of the two neighborhood entrances, staff would plan to return to the City Council in the fall of 2023 once staff has secured the necessary easements. Finally, should the City Council support both Staff and the Advisory Group's recommendation to commence the re-engineering effort in Fall 2023, staff would plan return to the City Council in the fall to present a comprehensive cost estimate and proposal to re-engineer LMDs 83-1 and 86-1 with an anticipated ballot effort to begin in early 2024.
Environmental Review:
This action is not subject to review under the California Environmental Quality Act (CEQA).
Fiscal Impact:
None.
Public Notification:
None.
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May 16, 2023, Item #9
Attachments:
A. Resolution
B. Twin Peaks and Espola Road Landscape Master Plan
C. LMD Entrance Renderings
Reviewed/Approved By:
Wendy Kaserman
Assistant City Manager
4 of 103
Reviewed By:
Alan Fenstermacher
City Attorney
Approved By:
City Manager
May 16, 2023, Item #9
RESOLUTION NO. 23-
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
POWAY, CALIFORNIA, APPROVING THE TWIN PEAKS
ROAD AND ESPOLA ROAD LANDSCAPE MASTER PLAN
WHEREAS, in August of 2018, after an unsuccessful Proposition 218 ballot process, the City formed the Landscape Maintenance District (LMD) Advisory Group, a volunteer resident advisory group for LMD 83-1 and LMD 86-1, to provide recommendations to staff and City Council for landscape maintenance and re-engineering strategies; WHEREAS, the City obtained the services of KTUA (Consultant) to develop a Landscape Master Plan which will be used to support both staff and the LMD Advisory Group's future re balloting efforts;
WHEREAS, the Consultant, with LMD Advisory Group's support, conducted a community outreach survey, hosted two community outreach workshops and drafted a Landscape Master Plan for Twin Peaks and Espola Roads; and
WHEREAS, the Consultant completed the final Twin Peaks Road and Espola Road Landscape Master Plan in April of 2023, which is included in the staff report as Attachment B.
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Poway as follows:
SECTION 1: The City Council hereby approves the Twin Peaks Road and Espola Road Landscape Master Plan, dated April 2023, as incorporated herein by reference, to become effective May 17, 2023.
5 of 103 ATTACHMENT A
May 16, 2023, Item #9
Resolution No. 23-
PASSED, APPROVED AND ADOPTED at a Regular Meeting of the City Council of the City of Poway, California on the 16th day of May, 2023 by the following vote, to wit:
AYES:
NOES:
ABSTAINED:
ABSENT:
DISQUALIFIED:
Steve Vaus, Mayor
ATTEST:
Carrie Gallagher, CMC, City Clerk
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May 16, 2023, Item #9
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ACKNOWLEDGEMENTS
City of Poway
Public Works Department
Steve Vaus - Mayor
Barry Leonard - Deputy Mayor
Peter De Hoff - Councilmember
Caylin Frank - Councilmember
Brian Pepin - Councilmember
LMD Advisory Group
Toni Bates, Co-Chair
Steve Mayer, Co-Chair
KTUA
Cheri Blatner - Landscape Architect
Josef Gutierrez - Landscape Architect
May 16, 2023, Item #9
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31 TABLE OF CONTENTS
CHAPTER 1
INTRODUCTION AND BACKGROUND
CHAPTER 2
STREET TREE ANALYSIS
CHAPTER 3
ESPOLA ROAD LANDSCAPE RECOMMENDATIONS
CHAPTER 4
TWIN PEAKS LANDSCAPE RECOMMENDATIONS
CHAPTER 5
APPENDIX
5.1 STREET TREE ANALYSIS
5.2 ONLINE COMMUNITY SURVEY - ESPOLA ROAD
5.3 ONLINE COMMUNITY SURVEY - TWIN PEAKS
ROAD
•
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May 16, 2023, Item #9
~ CHAPTER 1 - INTRODUCTION AND BACKGROUND
-8 1.1 BACKGROUND
Over the last several years, the landscape character along Twin Peaks Road and Espola Road has been declining, leading to poor performing landscape, invasive trees, and unsafe tree conditions. Some of the key reasons for this include reduced maintenance due to lack of funding , years of drought conditions, rising labor and water costs, lack of LMD assessment increases, and a lack of well defined development plans. KTUA Planning and Landscape Architecture was hired to develop the Landscape Master Plan for the potential landscape improvements along both Twin Peaks Road and Espola Road.
1.2 PURPOSE OF DOCUMENT
The purpose of this document is to illustrate the conceptual landscape improvements developed by KTUA in conjunction with the City of Poway, the LMD Advisory Group, and through public outreach. This document was created to be a guide for the City of Poway in their determination of landscape improvements along Twin Peaks Road and Espola Road. The information shown throughout the length of this document is for reference only. This document is not a formal set of construction documents, and should not be used for construction.
The landscape master plan will set the framework for decision makers in the planning, maintenance, and rehabilitation of landscape along Twin Peaks Road and Espola Road. The landscape master plan will assist in providing a systematic and prioritized approach in the development of recommendations on the implementation of short and long term landscape projects, maintenance, operations and findings based on public desires. Implementation will be done in phases as resources and funding allow. Details of specific plant and tree selections will require further analysis with input from the community.
1.3 OVERVIEW OF LANDSCAPE MAINTENANCE DISTRICTS
A Landscape Maintenance District, or LMD, is an identified area in which benefiting property owners pay for enhanced landscaping, and other improvements, and services beyond those generally provided by the City. LMD 83-1 was created in 1983. It includes 1,432 parcels, including the streetscape along Twin Peaks Road. LMD 86-1 was created in 1986 and includes 954 parcels, including the streetscape along Espola Road.
Under proposition 218, the City cannot raise assessments to meet the rising costs without a vote of all parcels that receive what the State terms a "special benefit" from the landscape improvements. An independent engineering review is needed to determine which parcels receive special benefit from the existing landscape improvements. By law, the City cannot simply raise the assessments of those currently assessed without a majority vote of assessed property owners.
2 TWIN PEAKS AND ESPOLA RD· LANDSCAPE MASTER PLAN
1.4 CURRENT STATE OF LMD AND OUTLOOK
Several challenges exist for LMDs. The first challenge is centered around the rising expenditures involved. Prevailing wage, water costs, the prevalence of drought, and the declining health of existing trees all persist while revenues remain static. Without the funds to keep up with rising costs, landscape maintenance (which includes tree maintenance, litter abatement, irrigation upgrades and watering) has been reduced significantly.
Previous ballot efforts in 2018 to restore landscaping and improve service levels in the LMDs received a majority protest and therefore failed to increase assessments. As a result, the LMD assessments remained and did not change.
Withservicecosts increasing and insufficient funds, thestreetscapealongboth Twin Peaks Road and Espola Road is in declining condition. To improve this area, the City of Poway has engaged in efforts to mitigate these issues. In 2018, the LMD Advisory Group was formed to assist with rehabilitation strategies. In 2019, KTUA was hired to prepare the conceptual landscape plan.
The City has since also been awarded a $1.4 million FEMA grant to remove hazardous trees along Twin Peaks Road, Espola Road, and Green Valley Open Space, supplemented with a city share of $500 ,000.
From here, the outlook for the LMDs is as follows:
• Landscape Master Plan (LMP) (This document)
• A complete re-engineering analysis must be conducted to evaluate costs and required revenues.
• Proposed Improvements will be prioritized into high, medium and low categories • Assessment levels needed to implement the proposed improvements will be identified and a phasing strategy will be developed
1.5 LMD ADVISORY GROUP
The LMD Advisory Group is comprised of volunteer residents within LMD 83-1 and LMD 86-1.
As mentioned above, it was created to assist with rehabilitation and maintenance strategies and to help establish lines of communication between the City staff and residents.
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~ 1.6 TIMELINE FOR LMD 83-1 AND LMD 86-1
.... ...
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•
•
1983
1986
1996
2012
2018
LM D 83-1 formed
LM D 86-1 formed
CA voters approved Proposition 218
LMD begins using reserves for
operations
• LMD 83-1 & LMD 86-1 ballot
initiative failed
• LM DAG formed to advise with
rehabilitation strategies
KTUA hired to prepare a conceptual
•
landscape plan 2019
-
- City awarded $1.4 million FEMA
grant to remove hazardous trees 2020 along Twin Peaks Road & Espola Road, and Green Valley Open Space
-
~ City re-bid landscape mai_n_t~nance
2021 contract with goal of stab1l1z1ng
expenditures ....._...
•
2022 LMP outreach activities
TWIN PEAKS AND ESPOLA RD - LANDSCAPE MASTER PLAN 3
May 16, 2023, Item #9
~ 1.7 COMMUNITY FEEDBACK
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During development of the conceptual
landscape plans, the community within both
LMD 83-1 and LMD 86-1 provided input on
potential landscape improvements within the
LMDs. Community engagement and input
occurred through:
• An online survey available through the City
of Poway website
• Two in-person open houses hosted by the
City of Poway
• Eight informal neighborhood gatherings
hosted by LMD Advisory Group members
Over 300 people responded to the online
survey. Key take-aways from the survey
results for each LMD are shown in the
following graphics. While the survey results
are not scientific, they revealed that over two
thirds of respondents want the landscaping at
neighborhood entrances to be rehabilitated,
and a large majority wanted to remove at least
some trees and improve maintenance of the
remaining trees along Twin Peaks Road and
Espola Road. About a third of LMD 86-1 and
almost half of LMD 83-1 attendees wanted
to rehabilitate neighborhood entrance
landscaping and replace lost trees in the
LMDs.
Feedback at the neighborhood gatherings
was less formal. Attendees learned about
the financial history of the LMD (rising
costs and stagnant revenues) that led to the
deteriorated landscaping at neighborhood
entrances and hazardous trees along Espola
Road. Attendees were generally interested
CONCERNED ABOUT
THE CONDITION OF
THE LANDSCAPING AT
THE NEIGHBORHOOD
ENTRANCES
12.75% WERE NEUTRAL
23.53% WERE NOT CONCERNED
REMOVING ONLY
DISTRESSED TREES OR ALL
EUCALYPTUS TREES
IF TREES WERE REMOVED OUTSIDE OF
HAZARDOUS MITIGATION GRANT
FIGURE 1-1: Key Takeaways from Online Survey to LMD 86-1 in pursuing strategies to rehabilitate the
entrances, reduce the number of hazardous
trees, and improve landscape maintenance
within the LMDs.
The feedback received from these activities
provided guidance during development of the
landscape recommendations described in the
following chapters.
4 TWIN PEAKS AND ESPOLA RD· LANDSCAPE MASTER PLAN
CONCERNED ABOUT
CONDITION OF TREES
19.6% WERE NEUTRAL
14.7% DID NOT AGREE
CONCERNED ABOUT
DANGER OF EUCALYPTUS
TREES
19.8% WERE NEUTRAL
20.7% DID NOT AGREE
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CONCERNED ABOUT
THE CONDITION OF
THE LANDSCAPING AT
THE NEIGHBORHOOD
• 14.15% WERE NEUTRAL
• 14.53% WERE NOT CONCERNED
REMOVING ONLY
DISTRESSED TREES OR ALL
EUCALYPTUS TREES
• IF TREES WERE REMOVED OUTSIDE OF
HAZARDOUS MITIGATION GRANT
••
·• .
.. . .
FIGURE 1-2: Key Takeaways from Online Survey to LMD 83-1
CONCERNED ABOUT
CONDITION OF TREES
• 10.4% WERE NEUTRAL
• 9.4% DID NOT AGREE
CONCERNED ABOUT
DANGER OF
EUCALYPTUS TREES
• 10.9% WERE NEUTRAL
• 15.l % DID NOT AGREE
TWIN PEAKS AND ESPOLA RD· LANDSCAPE MASTER PLAN 5
May 16, 2023, Item #9
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~ CHAPTER 2 - STREET TREE ANALYSIS
~ 2.1 SITE INVESTIGATION
(,.)
Project work began with a site walk-through
and investigation. Over several days, KTUA,
representatives from the City of Poway, and
the LMD Advisory Group, investigated the
project areas along Twin Peaks Road and
Espola Road. The primary objective of the
site visit was to evaluate the condition of
the existing trees along each of the streets.
An arborist's report had been completed in
recent years prior to the beginning of this
project. Using this information, the team was
able to confirm first-hand the findings of the
report. Trees were evaluated according plant
health, size, and location.
While on site, the team was also able to
confirm the current site conditions against
the recorded information. For example, some
trees previously recorded had since been
removed or possibly fallen.
FIGURE 1-3: Site Investigation Images
8 TWIN PEAKS AND ESPOLA RD - LANDSCAPE MASTER PLAN
May 16, 2023, Item #9
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2.2 STREET TREE ANALYSIS
While on the site walk investigation, KTUA
documented the existing site information. This
information was compiled into a street tree
analysis document. The resulting document
mapped the existing trees along each road.
Each tree location was assigned a color
according to their individual condition. Trees
notated in red or blue color were designated
as poor or dead condition trees respectively.
They were determined to be of poor health
and therefore recommended for removal.
Each tree within the designated limit of work
was documented. The complete mapping
analysis can be found in the appendix of this
master plan document.
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LEGEND
0 GOOD CONDITION TREE
0 FAIR CONDITION TREE
0 POOR CONDITION TREE
0 DEAD CONDITION TREE
-i.} EXISTING LIGHT POLE
-- -- RIGHT-OF-WAY
■ •• ■ LIMIT-OF-WORK
EXISTING WALL
FIGURE 1-4: Sample Plans from Street Tree Analysis for Twin Peaks Road and Espola Road --------.. ~- -----.------- - -l----:-__ ---.,--- LIMIT OF WORK I ~·····························
CON~
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TWIN PEAKS AND ESPOLA RD · LANDSCAPE MASTER PLAN 9
May 16, 2023, Item #9
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May 16, 2023, Item #9
~ CHAPTER 3 - ESPOLA ROAD LANDSCAPE RECOMMENDATIONS -.... 8 3.1 ESPOLA ROAD PLANTING DESIGN - EXISTING ENTRYWAYS As part of the street improvements, several
existing neighborhood entryways were
evaluated, based on feedback from the LMD
Advisory Group and the City. These entrances
were noted to be in poor landscape health.
Previously installed plant material was found
to be non-existent or in decline. Existing entry
monument signs were left with bare landscape
adjacent to them, as shown right at the Stone
Canyon Ranch Entryway at Willow Ranch
Road. The stark landscape conditions could
be due to insufficient irrigation, unhealthy
soils, and/or lack of adequate maintenance.
The existing entryway at Country Day Road
along Espola Road (shown below right)
was noted by the community as a preferred
landscape option. This neighborhood entry
had been renovated in recent years. The
combination of drought tolerant plant material
and rock provided a much more durable
and financially sustainable landscape with
a modern appeal. In addition, this preferred
landscape option is consistent with the City of
Poway Landscape Design Manual which calls
for "native and naturalized species of plants,
and "low-water use planting". Native and
naturalized drought-tolerant plants provide
a variety of environmental benefits, including
water conservation and natural habitat
for birds and other wildlife. Specific plant
selections for LMD entrance rehabilitation will
require further study with input from the LM D
community.
Stone Canyon Ranch Entry at Willow Ranch Road
•~1
~:- .
Existing Entry at Country Day Road along Espola Road
12 TWIN PEAKS AND ESPOLA RD - LANDSCAPE MASTER PLAN
Stone Canyon Ranch Entry at Willow Ranch Road
Existing Entry at Country Day Road along Espola Road
May 16, 2023, Item #9
~ 3.2 ESPOLA ROAD - ENTRYWAY ENHANCEMENT PLANTING DESIGN CONCEPTS 0 .... .... 8 p
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ACCENT SHRUBS
COBBLE MULCH
~
EXISTING LOW WALL
~
LOW GROWING SHRUBS
BOULDERS
I .,,.?\i:j' i· MEDIUM SHRUBS
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MEDIUM SHRUBS
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LOW GROWING SHRUBS
ACCENT SHRUBS
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ESPOLAROAD
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WILLOW RANCH ENTRY
Upon site investigation, KTUA provided design
options for how the preferred landscape could
be applied to other entryways along Espola
Road. Willow Ranch Road and Bounty Way
were used to show a variety of scales. Along
with the plans, several planting options were
provided that were determined to be suitable
for the area and would fit the desired aesthetic.
These planting options can be found at the
end of this chapter.
~
BOUNTY WAY ENTRY
NOTTO SCALE NORTH
The design intent is to create a modern
landscape appeal while also highlighting the
entry monument signage. Cobble mulch is
provided along the pedestrian walkways so
that plant material is not damaged with foot
traffic. This allows the shrub material to be
set back within the planting area, which will
allow them to grow with less disturbance.
The combination of low-growing and accent
shrubs will then provide a colorful landscape
groundcover, with environmental benefits.
NOTTO SCALE e
PLANTING LEGEND
,,,-~'L ENTRY ACCENT
... T TREE
0 ACCENT
TREE
-
LOW GROWING
SHRUBS
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EXISTING TREES TO
REMAIN
NORTH
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~ SHRUBS
TWIN PEAKS AND ESPOLA RD - LANDSCAPE MASTER PLAN 13
May 16, 2023, Item #9
~ 3.3 ESPOLA ROAD PLANTING DESIGN CONCEPT
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Following the street tree analysis, KTUA
created planting design concepts for the
improvements along Espola Road. Two
concepts were developed and presented to
the community, one formal and one informal
concept. These schemes were designed to
accommodate the anticipated tree removal
from the grant money awarded to the City.
Therefore, it was infeasible to remove and
replace all existing Eucalyptus trees along
Espola Road. As a result, the first phase of
proposed development was to remove existing
street trees within the public right-of-way as
phasing and funding allow, and provide new
street trees that are a more appropriate size
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relative to the street, drought tolerant and throughout the length of the street. This easy to maintain. concept provides an outdoor environment that 1 PROPOSED TREES,
THIS SHEET Again, both concepts proposed new street
trees within the right-of-way, including
within existing street parkways, which are
the planting areas between the curb and the
neighboring sidewalk. The design intent was to
create a comfortable street environment while
improving the street safety and aesthetics.
Within the formal street tree concept, the
street trees would be arranged in a strict,
linear layout. Trees would be planted at regular
spacing of 30'-0" on center. The tree species
would be arranged in a repeating pattern
results in a defined and sculpted appearance.
Within the informal street tree concept
(shown above), the street trees would be
arranged with irregular spacing and tree
species arrangement. This type of planting
character provides an outdoor environment
that resembles the natural aesthetic of the
existing landscape along Espola Road and is
consistent with the City of Poway's "City in the
Country" motto. This informal concept was
the preferred option among the community,
as noted in the online survey and open house
events.
~
NORTH
NOTTO SCALE
PLANTING LEGEND
STREET TREE #I
- STREET TREE #2
• ACCENT TREE
f ·-.., , EXISTING TREE TO \ CI ,___ __ , REMAIN
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May 16, 2023, Item #9
~ 3.4 ESPOLA ROAD PLANTING DESIGN CHARACTER
0 .... ....
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The images on the right depict the intended
planting character for the streetscape. The
design intention is to create a landscape
environment that is more natural in
appearance. This is marked by the irregular
spacing and variety of trees along the roads
and sidewalks. As shown, this can be achieved
with various tree species and sizes.
The current streetscape along Espola Road
maintains a natural aesthetic. The proposed
planting improvements would build upon the
planting character while also improving plant
health and site safety. In addition, this informal
street tree concept would promote the City of
Poway's "City of the Country" aesthetic and i-.
supports lower maintenance requirements.
Selection of native and naturalized tree species
also follows the City's Landscape Design
Manual which calls for "native and naturalized
species of plants and low-water use planting".
Native and naturalized drought-tolerant trees
provide a variety of environmental benefits,
including water conservation and natural
habitat for birds and other wildlife. Specific
tree selections will require further study with
input from the LMD community.
TWIN PEAKS ANO ESPOLA RO - LANDSCAPE MASTER PLAN 15
May 16, 2023, Item #9
~ 3.5 ESPOLA ROAD TREE PLANTING PALETTE
0 -...
8 CITY OF POWAY
LANDSCAPE
DESIGN MANUAL
TREES
24" BOX SIZE
Pistacia chinensis / Chinese Pistache
Mature Height : 30' - 35'
Quercus ilex / Holly Oak
Mature Height: 40'-70'
Ulmus parvifolia / Chinese Elm
Mature Height : 40'-50'
.................................................................................................................................................
DROUGHT
TOLERANT TREES
24" BOX SIZE
NATIVE TREES
24" BOX SIZE
Geijera parvifolia / Australian Willow
Mature Height: 25' -35'
Arbutus 'Marina' - Strawberry Tree
Mature Height: 20'-40 '
Lophostemon confertus / Brisbone Box Koelreuteria paniculata / Chinese Rome Tree Mature Height : 40'-60' Mature Height: 30'-35'
Cercidium floridum / Blue Palo Verde
Mature Height: 35'
Cercis occidentolis / Western Redbud
Mature Height: 15'-20'
Rhus lancea I African Sumac
Mature Height: 20'-30'
Chilopsis linearis / Desert Willow
Mature Height: 15'-40'
Quercus agrifolia / Coast Live Oak
Mature Height: 50'-70'
................................................................................. •-• ............................................................. .
Shown above are the tree species options that category are trees that were determined to be the year. Such conditions are common this list of tree options provides a healthy were found to be suitable for the streetscape suitable from the list of tree options approved around the San Diego region. These species variety to create an appealing and thriving along Espola Road. These trees provide a by the City of Poway for Espola Road. Next, are successfully used in such conditions. landscape, it is intended to act as a guide. size that is more appropriate to the speed of a selection of drought tolerant tree species Lastly, a group of tree species options native Further planting options could be developed ongoing traffic. They also are broadheaded, were identified. These trees are known to to California were identified. The benefits of once the area reaches construction or non-invasive, drought-tolerant and require be tolerant of various soil environments that these options include better plant durability construction documentation. low effort of maintenance. Within the first receive lower volumes of water throughout over time and lower water usage needs. While 16 TWIN PEAKS AND ESPOLA RD - LANDSCAPE MASTER PLAN
May 16, 2023, Item #9
~ 3.6 ESPOLA ROAD PLANTING DESIGN - ENHANCED ENTRYWAYS CONCEPTUAL PLANT PALETTE a ....
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ENTRY ACCENT
TREES
24"BOXSIZE
Arbutus 'Marina'
Strawberry Tree
Logerstroemia indica
Crape Myrtle
Pistacia chinensis
Chinese Pistache
................................................................................................................................................. -
SHRUBS
1 GALLON SIZE
Arctostophylos 'Pacific Mist'
Pacific Mist Manzanita
Carex divulsa
Grey Sedge
Helictotrichon sempervirens
Blue Oat Gross
Juncus patens 'Elk Blue'
California Rush
Muhlenbergia capillaris
Pink Muhly
Sesleria autumnalis
Autumn Moor Gross
.................................................................................................................................................
J."'~ ~\,~
ACCENT SHRUBS
1 GALLON SIZE
Agave Species
Agave
'.',
··~· · ' - ·~ · . '\ ,, ~,. \1 :: ' , ' . . . . . ' ~Jft., ~-•Jl_: ,,,/,t,1!/J ·'.,',-,~""~ii, ~-·.•:~ll'Jll'Jt> -~ .·('l~~\1.J;t\;•:,:;(fj~~~,t~?~ .-:~~~ .. \'{.~.~ t ·\i\.>i(·~~r~;J
wl.' )(' ~'.\·.•. :; ·. ·.· :;,,,_· ·
~~ ,_-~. " · " -- : \' ·,·) !
"·1. ' • . ••• -.
, ·---!(.-oe., i'.ii}
Aloe Species
Aloe
Crassula falcala
Airplane Pion!
Echeverio 'Afterglow'
Echeveria
Senevio mandra liscoe
Blue Finger
.................................................................................................................................................
Shown above are the planting species options entry landscape. Next, shrub species options woody landscape shrub material, yet still offer these plant options provide a landscape that were found to be suitable for the entryways are shown. The common element with these great adaptability and durability within the appeal similar to the existing entryways along along Espola Road. Within the first category options is that they are all grass type shrubs. San Diego environment. Lastly, accent shrub Espola Road that were well-received in the are accent trees that will be attractive in either Each offer a variety of green color and are options are shown. These options provide an community. their color or form. These tree options are small great for shrub massings. The grassy texture appealing textural contrast to the grasses and to medium in size so they do not overpower the provides a modern aesthetic as opposed to provide more options for color. Altogether, TWIN PEAKS AND ESPOLA RD· LANDSCAPE MASTER PLAN 17
May 16, 2023, Item #9
N ex, 3.7 ESPOLA ROAD PLANTING DESIGN CONCEPT - AERIAL
a .....
0 w Three dimensional modeling studies were
performed to understand the visual impacts
of the street tree improvements. The final
informal planting concept is shown here. The
irregular spacing of trees and tree species
blend in more seemlessly with the aesthetic
of the remaining Eucalyptus trees outside of
the right-of-way.
FIGURE 1-5: Conceptual Aerial View of Landscape Concept (Informal Street Tree Spacing) 18 TWIN PEAKS AND ESPOLA RD · LANDSCAPE MASTER PLAN
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N
(0
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