Avalon_Case_Study

the avalon green alley network
Demonstration project
Lessons Learned from Previous Projects for
Green Alley Development in Los Angeles & Beyond
Luskin School of Public Affairs
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Luskin School of Public Affairs

The avalon green alley network
Demonstration Project
Lessons Learned from Previous Projects
for Green Alley Development in Los Angeles & Beyond
March 2015
+

Acknowledgments
The authors would like to thank The Trust for Public Land for their support of
this research. Special appreciation goes to Holly Elwell, Laura Ballock and
Tori Kjer for their vision, thoughtful feedback and generously lending their time
while sharing information. While too many to name, the authors also thank
the managers of the other green alley projects and programs described in this
report.
UCLA luskin center for innovation
Established with a gift from Renee and Meyer Luskin, the UCLA Luskin Center
for Innovation unites scholars with civic leaders to advance policy, planning
and technological solutions to pressing environmental issues. Initiative areas
include the Complete Streets Initiative, which focuses on achieving more
livable, complete streets and other routes for people to travel safely regardless
of their transportation mode, ability or age.
The following researchers from UCLA contributed to this report:
Rachel Lindt, Project Manager and Lead Author
Colleen Callahan, Project Director and Editor
J.R. DeShazo, Director, Luskin Center
Elizabeth Bieber, Copy Editor
the trust for public land
This report is commissioned by The Trust for Public Land, a U.S. national,
nonprofit organization that conserves land for people to enjoy as parks,
gardens, natural areas and open space. The report tells the story of the Avalon
Green Alley Network Demonstration project. This project is part of The Trust
for Public Land’s Parks for People initiative, which focuses on collaborations
with underserved, park-poor communities to ensure that everyone has parks,
gardens, playgrounds, trails and other natural places within a ten-minute walk
from home.1
The Avalon Project is also part of The Trust for Public Land’s
Climate-Smart Cities Program and Green Infrastructure Program, as an
example of how green infrastructure can be woven into the built environment
to promote climate resiliency.2
For more information
Contact the UCLA Luskin Center for Innovation: www.innovation.luskin.ucla.edu/
Copyright 2014 by the Regents of the University of California, Los Angeles.
All rights reserved.
Printed in the United States.
Cover page image credit: SALT Landscape Architects
Inside cover image credit: The Trust for Public Land and SALT Landscape
Architects

Chapter 4. Lessons Learned from theAvalon GreenAlley Network
Demonstration Project
Introduction 68
Laying the Foundation 69
Partnerships and Funding 70
Design and Permitting 74
Challenge, Creative Solution and Unique Opportunity 82
Conclusion 85
Table of contents
Chapter 1. Introduction
Purpose of this Report 10
Report Overview and Methods 11
Rationale 12
Green Alley Basics 14
A Green Alley Framework 15
Chapter 2. Broader Context: Project and Program
Examples from Across North America
Introduction 19
Environmental Focus
• Chicago’s Green Alley Program 20
• Sun Valley’s Elmer Paseo Stormwater Improvements Project 22
Economic Focus
• Hollywood’s East Cahuenga Alley Revitalization Project 24
Social Focus
• Seattle’s Alley Network Project 26
• Boyle Heights’ Alley Reclamation 28
Multi-Foci
• Austin’s Green Alley Initiative and Demonstration Project 30
Chapter 3. TheAvalon GreenAlley Network Demonstration Project
Introduction 37
Overview and Importance 38
Status 38
Rationale 40
Goals 41
Steps to Alley Transformation 42
1) Laying the Foundation with 43
a) Research and Pre-Design Studies 43
b) Political and Municipal Support 44
c) Ongoing and Integrated Community
Outreach and Engagement 46
2) Partnerships and Funding 48
3) Design and Permitting; 52
Next Steps 59
4) Construction and Implementation 59
5) Maintenance and Stewardship 61
6) Monitoring and Evaluation 63
Thinking Big: Going Beyond the Avalon Green Alley Network
Demonstration Project 64

List of figures
Figure 1: South Los Angeles in the context of the County of Los Angeles;
The Avalon Project site location in South Park neighborhood
Image Credit: The Trust for Public Land 10
Figure 2: Current conditions of an alley in the South Park neighborhood
of South LosAngeles
Figure 3: Alley density in the city of Los Angeles, by subregion
Image Credit: J.P. Newell et al. (2010) 12
Figure 4: Density in the Avalon Green Alley Network
Demonstration Project site area
Figure 5: Green alley framework
Image Credit: Authors 16
Figure 6: Chicago alley with impermeable pavement and poor drainage
before improvements
Image Credit: The City of Chicago Green Alley Handbook 20
Figure 7: Chicago green alley with permeable pavement that reduces
flooding in a cost-effective manner
Image Credit: The City of Chicago Green Alley Handbook 21
Figure 8: Flooding in Elmer Paseo before improvements
Image Credit: The Council for Watershed Health 22
Figure 9: Elmer Paseo after improvements
Image Credit: The Council for Watershed Health 23
Figure 10 The East Cahuenga Alley before revitalization
Image Credit: The Department of Public Works, The City of Los Angeles 24
Figure 11: The East Cahuenga Alley after revitalization
Image Credit: Sarah McPherson Besley, Hollywood Business
Improvement District 25
Figure 12: Neighborhood party in Post Alley, Seattle
Image Credit: Mitch Reinitz 26
Figure 13: World Cup in Nord Alley 2010
Image Credit: Jordan Lewis 27
Figure 14: Murals and painted pavement in an alley in Boyle Heights
Image Credit: Kris Fortin, LAStreetsblog 28
Figure 15: Painted alley floor in Boyle Heights
Image Credit: Boyle Heights Beat 29

Figure 16: Alley flat prototype two: Lydia Street
Image Credit: The Alley Flat Initiative 30
Figure 17: Before and after view of alley with multi-functional planters and
native landscaping, along with community members
Image Credit: The City of Austin, Office of Sustainability 31
Figure 18: Planters in Guadalupe neighborhood alley in East Austin, designed
and constructed by University of Austin students
Image Credit: University of Texas at Austin 32
Figure 19: Conceptual rendering of the Green Alley Demonstration Project
Image Credit: The City of Austin, Office of Sustainability 32
Figure 20: Conceptual rendering of the Avalon Project
Image Credit: SALT Landscape Architects 37
Figure 21: Community residents cleaning an alley in the
Avalon Project site
Figure 22: The Avalon Project site
Image Credit: The Trust for Public Land and SALT Landscape Architects 39

Figure 23: Level of park need in the City of Los Angeles with circle
indicating the boundaries of the South Park neighborhood
Image Credit: The Trust for Public Land 2014 ParkScore© Index 40

Figure 24: Existing conditions of an alley in the South Park neighborhood
with standing water
Figure 25: Existing conditions of an alley in the South Park neighborhood
with illegal dumping
Figure 26: Gated alley in the city of Los Angeles
Image Credit: theeastsiderla.com 44

Figure 27: Early analysis of the Avalon Project site area showing
a lack of street trees
Figure 28: The Trust for Public Land presenting
images of options for the Avalon Project to gain feedback
Figure 29: Interactive flip books presenting green alley options to residents
Figure 30: The Los Angeles Police Department, Community-Policy
Advisory Board, Newton Division participating in community event
in an alley in the Avalon Project site area
Figure 31: ‘No Dumping’Spanish sign posted in alleys in theAvalon Project site area
Figure 32: U.S. Representative Lucille Roybal-Allard and
Los Angeles City Councilman Curren Price, whose respective
districts encompass the Avalon Project site, with students and faculty
of Maya Angelou Community High School, the Avalon Green Alley
Green Team and The Trust for Public Land staff
Figure 33: Alley clean up in an Avalon Project alley site
Figure 34: Two examples of green alley scenarios
developed by the City of Los Angeles’ Green Alley Subcommittee
Image Credit: The City of Los Angeles 52
Figure 36: Conceptual rendering of the T-shaped alley,
pedestrian-only zone located in the northeastern corner of the network
Figure 37: Priortization of streetscape improvements
Figure 38: Conceptual rendering of the Avalon Project’s permeable
paving and catch basins
Figure 39: Conceptual rendering of vine plantings
Figure 40: Construction details of the vine plantings
Figure 41: Community residents participating in a tree care workshop
Figure 42: Community residents and project partners removing
trash from South Park neighborhood’s alleys
Figure 43: Members of the Avalon Green Alley Team maintaining
alleys in the Avalon Project’s site area
Figure 44: Existing conditions of alleys in South Los Angeles

Figure 46: Christmastime posada (potluck)
Figure 47: Boyle Heights resident sweeping in a revitalized green alley
Image Credit: Boyle Heights Beat 70
Figure 48: Avalon Green Alley Team t-shirt
Figure 49: Community residents and project partners connecting
with local police force
Figure 50: The City of Chicago’s Green Alley Handbook
Image Credit: The City of Chicago 72
Figure 51: Grand opening of the EaCa Alley in Hollywood with
city officials and project partners
Image Credit: The Beverly Press 73
Figure 52: DIY string lighting in an alley in Seattle, Washington.
Image Credit: Mitch Reinitz 74
Figure 53: Graphic of dark sky compliant alley light fixture
Image Credit: The City of Chicago 74
Figure 54: Alley closure, gained through permits from the City of Seattle,
allow for events in Seattle’s alleys
Image Credit: Kari Quaas 75
Figure 55: Resident-designed and constructed movable planter
Image Credit: Kris Fortin/ LAStreetsblog 76
Figure 56: Movable planters add greenery and help block
vehicle access to alley during alley events
Image Credit: Kris Fortin/ LAStreetsblog 76
Figure 57: Grasscrete image and diagram
Image Credit: Sustainable Paving Systems, LLC;
The City of Los Angeles 77
Figure 58: A team of stakeholders and residents painting the walls
of Elmer Paseo
Image Credit: Urban Applications 78
Figure 59: Stamped pavement decal in Chicago’s green alleys
Image Credit: Kate A. Ekman 78
Figure 60: Birthday party held in a Boyle Heights alley with
the help of movable plastic chairs
Image Credit: Kris Fortin/LAStreetsblog 79
Figure 61: Lightweight and moveable additional seating for
restaurants adjacent to EaCa Alley
Image Credit: Sarah McPherson- Besley, Hollywood Business
Improvement District 79
Figure 62: Reception for adjacent gallery in a Seattle, Washington alley
Image Credit: Mira Poling 80
Figure 64: Design exploration for features of the Avalon Project
Figure 65: An alley in South Los Angeles with potential for transformation

Chapter 1. Introduction10
Purpose of this Report
Alleys are functional spaces used for a diverse range of activities.
However, urban alleys are largely underutilized and understudied.3
Cities across the United States are realizing the potential for alleys to
operate as more than single-function spaces for vehicle use. Instead,
cities are increasingly transforming alleyways into multi-purpose
community assets. The purpose of this report is to provide practical
information, relevant to supporting green alley efforts, to city staff,
community members and other stakeholders.
Green alleys can come in many different forms—operating as a
one-day, community event, or a permanent pedestrian corridor.
Infrastructure elements common to most green alleys include
permeable paving, vegetation and other stormwater management
techniques. The type of green alley created depends on the project
facilitators, the amount of resources available and the surrounding land
uses.
This report provides a case study of the current Avalon Green Alley
Network Demonstration Project (the Avalon Project). The Avalon
Project is placed into context through an introduction of the green alley
framework and examples from previous alley transformations in the Los
Angeles region and other parts of the nation. The Avalon Project is in the
South Park neighborhood, which sits in the heart of South Los Angeles
(see Figure 1).The Avalon Project provides ideas and lessons for green
alley design, funding, partnership development, community engagement
and the navigation of a complex regulatory environment. Despite a Los
Angeles focus, many of the challenges and solutions presented in this
document can be transferable to other communities across the nation.
This report is not intended to be a full toolkit with detailed guidance, but
rather a foundation for sharing lessons learned to help expand green
alleys in Los Angeles and elsewhere.
Figure 1: South Los Angeles in the context of the County of Los Angeles; the Avalon Project site’s location in South Park neighborhood
Image Credit: The Trust for Public Land

11Chapter 1. Introduction
Report Overview and Methods
This report begins with an introduction to green alleys and offers a framework
for conceptualizing the different types of green alleys, as organized by their
main benefits and corresponding features. Utilizing this framework, Chapter
2 then provides examples of projects and programs from across the U.S. that
represent the range of options. The examples highlight aspects of each project
or program that are particularly noteworthy or unique, providing inspiration
and context for the Avalon Project and perhaps other future alley revitalization
efforts.
Chapter 3 documents the story of the Avalon Project including its history,
development, partnerships, funding, design, community outreach and
upcoming construction. This section explores the ways in which the Avalon
Project could be a model for greening alleyways in the city of Los Angeles.
Figure 2 illustrates the current conditions of many alleys in the South Park
neighborhood of South Los Angeles. The Avalon Project is South Los Angeles’
first green alley project, the first comprehensive alley retrofit to simultaneously
incorporate green elements and vehicles in Los Angeles and the city’s first
green alley network. Other alley projects have been implemented in the
city but not at this scale and are largely located in commercial and higher
income neighborhoods. The Avalon Project has the potential to have regional,
statewide and national impact on innovative urban greening measures.4
Chapter 4 concludes with lessons learned and considerations to aid in green
alley replication and funding.
UCLA researchers compiled the information used in this report through a
combination of print and online literature reviews as well as communicating
with green alley program and project leaders. Additionally, site visits within the
Los Angeles region aided in the research process.
Figure 2: Current conditions of an alley in the South Park neighborhood of South LosAngeles

Rationale
With a dearth of open space in urban environments in the U.S., innovative
strategies have emerged to re-imagine and re-adapt public space and
infrastructure. Municipalities, community organizations, citizens and private
businesses are helping to transform underutilized spaces for vehicles
into multi-purpose places for people. Examples include installing green
infrastructure, pedestrian plazas and parklets, which are small urban parks.
Parklets are created by converting parking spots or other underutilized spaces
primarily meant for cars, into places for active and passive recreation.4
Historically, alleys were a key urban design feature of post WWII cities,
used for milk and coal delivery and vehicular access to the back entrance of
properties.5
Today alleys are still used for vehicle access, including municipal
services and deliveries, but many have become ignored or feared for being
locations for illicit activities, refuse and illegal dumping. Communities across
the nation are beginning to examine how such an abundant infrastructural
element could be transformed to realize more benefits.
In the past decade, interests in alleys have increased at the same that there
have been advancements in sustainability and green infrastructure. Together
these forces have manifested into an informal movement to develop “green”
alleys.6
Examples include Chicago’s green alleys with stormwater infiltration
and strategies for flooding abatement; Seattle’s community events and
activities held in the historic and central business district’s alleys and; Los
Angeles’ revitalized commercial alley in the Hollywood Entertainment District.
These projects and programs, among many others, have clearly expanded
upon the trash-receptacle and municipal service delivery function of alleys and
capitalized on their multi-functional potential.
The potential is enormous in cities like Los Angeles. The city of Los Angeles
has approximately 900 linear miles of alleys amounting to about three square
miles—twice the size of New York’s Central Park (see Figure 3).7
South Los
Angeles alone contains about 300 linear miles of alleys, or approximately 30%
of all the alleys in the city of Los Angeles. Many alleys in South Los Angeles,
Figure 3: Alley density in the city of Los Angeles, by subregion
Image Credit: J.P. Newell et al. (2010)

however, are currently misused as unsanctioned dumping grounds for trash,
and are in a degraded state with the second highest “flood complaint density”
in the city due to the aging stormwater infrastructure and lack of permeable
surfaces.8
There is significant need for solutions to a lack of open space. The National
Recreation and Parks Association recommends 10 acres of park space per
1,000 residents,9
however, Los Angeles’ park space is 38 percent below the
national recommendation with 6.2 acres of park space per 1,000 residents.10
South Los Angeles is significantly worse still as its park space is 96 percent
below the national recommendation with 0.42 acres of park space per 1,000
residents.11
Not surprisingly, in this park-poor area, prevalence of obesity is
high; approximately one in three adults in South Los Angeles are obese.12
The Avalon Project aims to retrofit nearly a mile of alleys in a South Los
Angeles neighborhood that is particularly park-poor and densely populated
(See Figure 4). After years of planning, fundraising, conducting community
outreach and designing, the Avalon Project is slated to break ground in early
2015. Additionally, the South Los Angeles Green Alley Master Plan is in
progress and expected to finish in 2015. The Master Plan includes the Avalon
Project and additional plans for green alleys in South Los Angeles.
As diverse stakeholders embrace alleys to address a myriad of issues, now
more than ever, it is important to understand the range of possibilities. This
report presents a framework for doing so. In addition, this report is timely in its
use of the framework to learn about key projects, including the Avalon Project.
If the Avalon Project is scaled up to the city or county level, there could be
substantial benefits for adjacent communities and the region.
A framework for green alley improvements is a new offering at a time when
cities across the country are embracing multi-benefit green infrastructure
and developing green infrastructure master plans. Cities, like Los Angeles,
are moving towards policies that require all future street and alley projects to
incorporate green infrastructure.13
Figure 4: Density in the Avalon Green Alley Network Demonstration Project site area
SSanPedroSt
TowneAve
E 49th St
E 49th St
E 50th St
W 51st St
W 53rd St E 53rd St
E 51st St E 51st St
E 52nd StW 52nd St
E 52nd St
E 52nd Pl
E 48th St
W 48th St
E 47th St
E 46th St
W 47th Pl
Census Tract
2293
South Park
Census Tract
2292
1200 dwellings
110.5 acres
1348 dwellings
122.8 acres
SMainSt
WallSt
W 47th St
to Exposition Park & Downtown
SAvalonBlvd
McKinleyAve
WadsworthAve
SCentralAve
the Trust for Public Land
Avalon Green Alley
South Los Angeles, CA
Project
Site

green alley basics
For the purposes of this document, the following definition of green alleys
will be used:
Green alleys expand upon single-purpose infrastructure
of alleys and convert underutilized alleyways into
community assets and resources for environmental,
economic and social benefits.
More specifically, green alleys can be defined as those that activate the
public space for more than vehicular use and garbage disposal and involve
a combination of environmental/ environmental health, economic, and social
purposes. Depending on the motivations and needs of those spearheading
the project, green alleys can achieve a variety of these objectives and be
composed of a range of corresponding features. Green alleys should be
tailored to meet a community and project’s unique characteristics. Here are
some of the characteristics that will impact green alley development:
• Main objective: Motivations for green alleys can be to achieve economic,
social, environmental or multiple benefits.
• Project or Program facilitator(s) and funding: The lead entities
in green alley revitalization can include any combination of 1) grassroots
community organizations and/or residents, 2) non-governmental organizations,
3) business-led public-private partnerships, 4) city agencies, such as
departments of transportation, public works or planning and 5) elected officials
such as city council members.
• Surrounding land use: Both commercial and residential land uses can
support green alleys.
• Desired duration: Efforts can range from initiating a one-day community
event in an alley space, to a pilot project, to an institutionalized long-term
program.
• Scale: Efforts can focus on a single alley, a neighborhood network of alleys,
or a citywide network of alleys.
This range of green alley outcomes will be further explained and visualized in
Chapters 2 and 3.

A Green Alley Framework
We introduce a framework to present the range of green alley possibilities,
organized by main objectives - environmental, economic and social benefits.
Most projects or programs will focus on one of these three main objectives
while others are truly comprehensive. The framework can also be used to
understand similarities and highlight innovative features among projects and
programs.
Environmental. Green alleys can focus on environmental
objectives, such as to lower carbon emissions, sustainably
manage stormwater and address water supply, reduce the
urban heat island effect, or achieve other environmental health
benefits.14
Features often implemented to achieve such objectives include
permeable materials, bioswales and other features to sustainably manage
stormwater, as well as vegetation that can help reduce the urban heat island
effect by creating shade while expanding native plant and wildlife habitats.15
Additionally, green alleys can promote climate-friendly modes of transportation
by revitalizing alleys as networks for pedestrians and cyclists as well as
connections to nearby public transit.16
Elements of green alleys can be closely linked with green infrastructure.
The Environmental Protection Agency (EPA) defines green infrastructure
as using “natural hydrologic features to manage water and provide
environmental and community benefits.17
” Green infrastructure can also
be used to mitigate issues related to air pollution, urban heat island
effects, wildlife conservation and recreational needs.18
Best management
practices (BMPs) of green alleys, defined as devices and techniques
used to remove or reduce pollutants found in stormwater,19
include
porous pavement that absorbs water and allows infiltration into the soil
layer below, permeable pavers that allow water to percolate through
crevices between paving blocks and vegetated pavers or “grasscrete”
that help natural infiltration through allowing vegetation to grow within the
spaces of pavement.20
Economic. Green alleys with an economic focus are often
located in commercial areas and seek to convert alleys into safe
places that can support economic activities. Such converted
alleys can provide additional space for outdoor dining, as well
as pedestrian linkages within the community.21
Once revitalized, alleys
can support economic development by providing additional entrances to
neighboring businesses and could even become tourist destinations and
potentially increase adjacent property values.22
Social. Green alleys can focus on transforming underutilized
and neglected alleys into safe, attractive, and functional social
spaces that foster community cohesion.23
Social benefits of green
alleys can include: reducing the use of alleys for illicit activities,
creating a safe place for active recreation and pedestrian activity, and utilizing
the public space for implementing community gatherings and events. In
many cases, the process is just as important as physical changes. Residents
engaged in a green alley project may learn new skills while the project helps
foster community cohesion and community pride. Involvement can range from
attending alley cleanup events, to helping inform the design and other plans
of the alley project, to leading the change and mobilizing fellow community
members and other partners.
The following diagram, Figure 5, illustrates how projects and programs can
focus on one or more of these types of benefits. The examples in Chapter
2 and the main case study in Chapter 3 describe green alley programs that
highlight the range of possibilities within this framework.
$

Environmental Focus
Economic Focus Social Focus
Multi-Foci
Figure 5: Green alley framework
Image Credit: Authors

Endnotes
Acknowledgments
1
“Parks for People The Trust for Public Land.” Parks for People The Trust for
Public Land. Web. 13 Aug. 2014.
2
“Climate-Smart Cities.” The Trust for Public Land. N.p., n.d. Web. 30 July
2014.; “
State of California Urban Greening Grant Program Proposal.” The
Trust for Public Land. 2011.
3
Clay, Grady, and Barnett, Jonathan. Being a Disquisition upon the Origins,
Natural Disposition and Occurrences in the American Scene of Alleys ... a
Hidden Resource ... Louisville, Ky.: G. Clay, 1978. Print.
Chapter 1. Introduction
4
Sideris, Anastasia, Callahan, Colleen and Brozen,Madeline. Reclaiming the
Right of Way: A Toolkit for Creating and Implementing Parklets. Los Angeles,
2012. Print.
; “State of California Urban Greening Grant Program
Proposal.” The Trust for Public Land. 2011.
5
Martin, Michael David. “The Case for Residential Back-alleys: A North
American Perspective.” Journal of Housing and the Built Environment 17
(2002): 145-71. Web.
6
Cassidy, Arly, Newell, Josh and Wolch, Jennifer. Transforming Alleys
into Green Infrastructure for Los Angeles. Rep. Los Angeles: Center for
Sustainable Cities, U of Southern California, 2008. Print.
7
Newell, Joshua P., Seymour, Mona, Yee,Thomas, Renteria, Jennifer, Travis
Longcore, Wolch, Jennifer R., and Shishkovsky, Anne. “Green Alley Programs:
Planning for a Sustainable Urban Infrastructure?” Elsevier (2012): n. pag.
Web. 1 July 2014. <http:// dx.doi.org/10.1016/j.cities.2012.07.004>.
8
Ibid.
9
Chau, Haan-Fawn. Green Infrastructure for Los Angeles: Addressing Urban
Runoff and Water Supply Through Low Impact Development. Rep. N.p.: n.p.,
2009. California Water Board. Web. 6 Aug. 2014).
10
Ibid.; The Trust for Public Land ParkScore© index
11
The Trust for Public Land 2011 City Parks Facts. Web. 20 June 2014.
12
2009. California Water Board. Web. 6 Aug. 2014.
13
Ibid.
14
Ibid.
15
Sustainable Cities, U of Southern California, 2008. Print.; Fialko, Mary, and
Hampton, Jennifer. Seattle Integrated Alley Handbook: Activating Alleys for
a Lively City. Rep. N.p.: n.p., n.d. Green Futures Research & Design Lab
Resources. UW Green Futures Lab, Scan Design Foundation and Gehl
Architects. Web. 30 July 2014.
16
Downtown Seattle Public Space & Public Life. Rep. N.p.: n.p., 2009. Gehl
Architects, City of Seattle and International Sustainability Institute. Web. 3
July 2014.; Cassidy, Arly, Newell, Josh and Wolch, Jennifer. Transforming
Alleys into Green Infrastructure for Los Angeles. Rep. Los Angeles: Center for
Sustainable Cities, U of Southern California, 2008. Print.; The Trust for Public
Land Climate-Smart Cities Report.
17
Sustainable Cities, U of Southern California, 2008. Print
18
“Green Infrastructure.” Water: Green Infrastructure. United States
Environmental Protection Act, n.d. Web. 8 Aug. 2014.
19
2009. California Water Board. Web. 6 Aug. 2014).
20
Ibid.
21
“Green Infrastructure.” Water: Green Infrastructure. United States
Environmental Protection Act, n.d. Web. 8 Aug. 2014.
22
Burgos, Lila, and Sarkisian, Tamar. East Cahuenga Alley Revitalization
Project: Best Practices for a Creating Pedestrian-Friendly Urban Alley. Rep.
Los Angeles: Los Angeles Sustainability Collaborative, 2013. Los Angeles
Sustainability Collaborative. Web. 30 June 2014.
23
Ibid.
24
Transforming Alleys into Green Infrastructure for Los Angeles. Rep. Los
Angeles: Center for Sustainable Cities, U of Southern California, 2008. Print.
Chapter page image credit: SALT Landscape Architects

chapter 2 broader context: project and program
examples from across north america

19Chapter 2. Broader Context
Introduction
To contextualize the Avalon Green Alley Network Demonstration Project
highlighted in Chapter 3, Chapter 2 first introduces other green alley projects
and programs from the Los Angeles region and beyond. These examples are
organized by utilizing the framework introduced in Chapter 1. As such, each
project or program is highlighted for its: 1) environmental focus; 2) economic
focus; 3) social focus or; 4) in the case of a truly comprehensive program,
its multi-foci objectives. This is not to imply that most of the projects only
have one focus area and one corresponding set of benefits and features.
Rather, the aim is to highlight particularly distinct strengths and corresponding
features of select projects that inspired the Avalon Project and/or could inform
future green alley efforts.
UCLA researchers examined many project and program examples and
ultimately selected six examples from across the U.S. These following
examples were selected based on 1) respective unique elements that
collectively form a typology of possibilities for green alleys; 2) availability
of public information; 3) potential for interviews with project or program
managers and; 4) geographic variation:
Environmental Focus
• Chicago’s Green Alley Program
• Sun Valley’s Elmer Paseo Stormwater Improvements Project
Economic Focus
• Hollywood’s East Cahuenga Alley Revitalization
Social Focus
• Seattle’s Alley Network Project
• Boyle Heights’ Alley Reclamation
Multi-foci
• Austin’s Green Alley Initiative and Demonstration Project
To supplement these six featured examples, Chapter 2 also mentions other
noteworthy green alley projects and programs at the end of each category.
The information presented in this report provides a snapshot in time.
Information, particularly the monetary figures of new projects, may change in
the future as more information becomes publicly available.

Chapter 2. Broader Context20
Overview
Chicago’s Green Alley Program kicked-off U.S. green alley programs and
organized projects.25
Today, this influential program has re-purposed and
greened over 200 alleys throughout Chicago to cost-effectively reduce
stormwater flooding, urban heat island effects and carbon pollution.26
With one
of the most extensive alley networks in North America of approximately 1,900
linear miles and a total of 3,500 acres of impermeable surface, the Chicago
Green Alley Program is noteworthy in its scale, standardization within the City
and ability to retain the function of alleys for municipal services.27
Program Facilitators
The Green Alley Program is an initiative of the Chicago Department of
Transportation (CDOT). The majority of Chicago’s alleys lack sewer
infrastructure and were originally designed to divert stormwater toward the
center of the alleys and then into the streets, where the runoff joins the
combined sewer system (see Figure 6).28
Historically, the typical response to
flooding was either to resurface or reconstruct alleys and add a sewer and
catch basin.29
This was expensive. To avoid the costs of sewer infrastructure
upgrades or repair, in 2006, the CDOT re-conceived its alley program to
incorporate new green infrastructure to manage stormwater in a way that was
more cost effective and environmentally sustainable.
The CDOT began the program as a series of pilot projects in order to
demonstrate green infrastructure, develop alley design prototypes, and
formulate and test sustainable materials.30
The success of the pilot projects
raised the CDOT’s confidence in pervious pavement and fueled an increase in
development and manufacturing of this pavement within the local construction
industry, which in turn decreased costs of materials. In addition to permeable
pavement, the CDOT also tested and then implemented open-bottom catch
basins as another stormwater best management practice (BMP). After
successful pilot projects, the Mayor and the CDOT formalized the program
and created the “Green Alleys Handbook: An Action Guide to Create a
Greener, Environmentally Sustainable Chicago,” to educate stakeholders
and encourage replication (see Figure 60 on page 72 ). This handbook has
become an important resource for green alley projects throughout the world.
environmental focus: chicago’s green alley program
• Energy efficient lighting
• Recycled materials
• High-albedo pavement
• Pervious pavement
Environmental
SocialEconomic
Figure 6: Chicago alley with impermeable pavement and poor drainage before improvements
Image Credit: The City of Chicago Green Alley Handbook
Before

Noteworthy Program Elements
Chicago’s program is particularly notable for the strong leadership from its
department of transportation. Examples of this leadership include:
• CDOT’s ownership of the Green Alley Program. The CDOT
finances and has streamlined the development of green alley conversions
in the city. The CDOT’s ownership has enabled green alleys to become
routine and implemented on a widespread scale throughout the city and
has encouraged their integration into broader city-wide initiatives. Since the
creation of the Green Alley Program, every commercial and residential alley
that the CDOT has reconstructed has been “green,” using one or more of
the materials tested in the original five pilots (for an example of one of the
implemented green alleys, see Figure 7). The standardization and support
of green alleys has led to their widespread implementation and integration.
The program is a permanent environmental initiative within the CDOT’s green
infrastructure initiatives, which includes the implementation of a full range of
environmental best practices addressing water, energy, materials and waste,
climate and air quality, urban ecology, beauty and community.31
• The integration of green alleys into broader city-wide initiatives.
Green alleys are integrated into the City’s Climate Action Plan as well as
the CDOT’s Sustainable Urban Infrastructure Policies and Guidelines.32
Most recently, the CDOT has included alleys in their Make Way for People
initiative, which seeks to implement and support creative public right-of-way
reclamation. As the program facilitator, the CDOT’s motivation is to build upon
the Green Alley Program and enable the use of city alleys as People Alleys, a
term for alleys that can be used as temporary spaces for events, placemaking
and economic development.33
Funding and Implementation Details
Initial funding, estimated to be $900,000, was allocated to the Streetscape
and Sustainable Design section of the Project Development Division within
the CDOT for green alley research, material development, pilot projects and
creation of the Handbook. After this initial funding, the program was integrated
into the City of Chicago’s “Menu Improvement Plan,” which allocates funds to
the 50 wards to create ward-specific budgets for capital improvements and
discretionary funds. This model enables each ward to decide how to spend the
money based on projects listed on a “menu” of available improvements. These
improvements include items such as streetlights, bike lanes, and of course,
green alleys.
Figure 7: Chicago green alley with permeable pavement that reduces flooding in a cost-effective manner
Image Credit: The City of Chicago Green Alley Handbook
After

Overview
The Elmer Paseo Stormwater Improvements Project is located in a
residential neighborhood in the San Fernando Valley of Los Angeles. Prior
to this project’s completion in 2012, the alleyway in this neighborhood was
generally degraded, a location for undesirable activity, and subject to flooding
even during small storms (see Figure 8).34
Yet, the Elmer Paseo was an
important pedestrian passageway connecting residences to the neighborhood
churches, schools and services.35
Given this, the Paseo was selected as an
improvement site with project goals including to reduce flooding, increase
safety as a pedestrian passageway and add green space and habitat for local
wildlife and plants.41
Although the main impetus for the project was to provide
these environmental benefits, the success of multiple partnerships produced
many additional social benefits, including creating a location for community art
projects and public space.
The Council for Watershed Health, a Los Angeles region-based non-profit
organization focused on watershed research and analysis, was the lead entity
on this project as part of their Water Augmentation Study (WAS). The WAS
is a long-term research project focused on the potential to increase local
water supplies and reduce urban runoff pollution by increasing infiltration of
stormwater runoff.36
Many other community, city and regional partners supported the
implementation of the Elmer Paseo. Residents of the Elmer Avenue
Neighborhood provided input on the design of the project, by actively
participating in planning workshops.37
Collaborators at the city-level included
the offices of the two local council members as well as the Los Angeles
Department of Water and Power, the Bureau of Sanitation and the Bureau
of Engineering. These three city departments contributed both funds and
implementation support. Additional support came from the Los Angeles-based
environmental non-profit TreePeople.
The Elmer Paseo was part of a larger neighborhood effort the addresses
flooding and provides other environmental benefits. This larger effort is
environmental focus: sun valley’s Elmer Paseo Stormwater Improvements Project
• Pervious concrete pavement
• Infiltration trench
• Bioswale
• Native plants
Environmental
SocialEconomic
Figure 8: Flooding in Elmer Paseo before improvements
Image Credit: The Council for Watershed Health
• Murals on walls of the Paseo
Before

plants conserves water while attracting pollinators and birds. The Council for
Watershed Health is monitoring flow volume and water quality of the Elmer
Paseo, contributing data to the Water Augmentation Study.39
• Unique community uses of open, green space. Residents have
embraced Elmer Paseo for an array of activities and purposes. Examples
include neighborhood watch meetings, an outdoor classroom to teach about
sustainability and a site for community murals and interpretive signage.
Several funding sources collectively contributed to the Elmer Paseo. At
the state level, the Urban Greening Grant Program and the Santa Monica
Mountains Conservancy provided funding. At the city-level, the Los Angeles
Department of Water and Power and the Los Angeles Proposition O Clean
Water Bond, provided funding.40
Proposition O was passed by Los Angeles
voters in 2004, “which authorized the City of Los Angeles to issue a series of
general obligation bonds for up to $500 million for projects to protect public
health by cleaning up pollution.41
” The fund is managed by the Bureau of
Engineering and administered through the Bureau of Sanitation for the Elmer
Paseo’s stormwater management features. Public agencies, non-profits and
the community members collaboratively maintain the Paseo. For example,
TreePeople engages residents in plant-care and alley clean-ups.42
Another Notable Example: The North Hollywood Green
Alley Retrofit Project 43
The North Hollywood Green Alley Retrofit Project helped pave the way for
Elmer Paseo and other efforts in the Los Angeles region by piloting green
infrastructure practices and testing materials. This project implemented
green infrastructure in a neighborhood alley in the San Fernando Valley
in order to reduce flooding, recharge the groundwater basin and improve
water quality. Project support and funding came from the Department of
Public Works and the Department of Water and Power.
referred to as Sun Valley Watershed’s Elmer Avenue Neighborhood Retrofit
Demonstration, which implemented green infrastructure on a 24-home
residential street to augment the water supply by infiltrating stormwater runoff,
addressing flooding and educating residents about water conservation.38
The Elmer Paseo project is notable in its environmental focus, collaborative
partnerships and multi-beneficial outcomes. The following elaborates on these
project elements:
• A living laboratory demonstration project for green
infrastructure BMPs. According to the Council for Watershed Health, the
Elmer Paseo’s design serves as a living laboratory to test and demonstrate
alternative stormwater BMPs. Figure 9 shows the design improvements, such
as several BMPs, including pervious concrete pavement, an infiltration trench
and a bioswale with native plants. The incorporation of drought-resistant native
Figure 9: Elmer Paseo after improvements
Image Credit: The Council for Watershed Health
After

Overview
The East Cahuenga Alley Revitalization Project (EaCa Alley) is located in the
Hollywood Entertainment District of Los Angeles. EaCa Alley is a T-shaped
alley, composed of two alley segments and outlined by many restaurants. The
project was completed in 2012 and transformed a formerly gated alley with
trash, debris and long-standing pools of water, into a pedestrian-friendly space
(see Figure 10).44
The project demonstrates how converting a commercial into
a pedestrian-only space supports adjacent businesses.
Responding to the public nuisance known as “Heroin Alley,” EaCa alley
was gated by adjacent property owners in the 1990s, with the consent of
local officials.45
While the gates addressed safety concerns important in the
1990s, over time property owners realized that the gates were barriers to
the full benefits that the alley could provide.46
Adjacent businesses, along
with associations, such as the Hollywood Property Owners Alliance (HPOA),
the Hollywood Entertainment District and the Business Improvement District
(HBID), worked together on a vision to re-open the alley to create a pedestrian
and business-friendly environment.47
Sarah MacPherson Besley’s master
thesis at UCLA helped to inspire this vision by identifying the alley as a
potential site for multi-functional use.48
Municipal support and interest came from the Bureau of Engineering, the
Los Angeles Community Redevelopment Agency (CRA/LA) and Los Angeles
Councilman Eric Garcetti (now Mayor Garcetti) and his staff in Council District
13. The political support and leadership of this Council District assisted in
pioneering alley revitalization in the city through the expediting of permits,
sharing knowledge of funding sources and raising support of community
organizations, businesses and leaders.49
Stakeholders were able to utilize the California State Pedestrian Mall Law of
1960 in order to restrict vehicular traffic for the primary function of pedestrian
travel.50
Restoring EaCa Alley’s designation as a pedestrian mall was integral
to converting the commercial alley into a pedestrian-only space.
Economic focus: Hollywood’s East Cahuenga Alley Revitalization project
Environmental
SocialEconomic
• Private outdoor seating for
adjacent restaurants
• Do-It-Yourself (DIY) string
lighting
Figure 10: The East Cahuenga Alley before revitalization
Image Credit: Department of Public Works, The City of Los Angeles
• Permeable paving
• Planter box vegetation
Before

made possible through the active business community’s involvement. One
example is how the HBID and Homeowners Alliances’ assumed responsibility
for maintenance and repair of the permeable pavers, which in the City of
Los Angeles, is the necessary condition for implementing a non-standard
material.52
As a green, renovated and public space, EaCa Alley is also used
for other economic activities, including the Cahuenga Corridor Market for
artists to sell their wares and the Spice Alley event, which features food, music
and vendors.
• Features that create a pedestrian-friendly commercial
environment. After revitalization, the EaCa Alley functions as an outdoor
open space for visitors to stroll, relax, and enjoy outdoor dining options
and patio space (see Figure 11).53
Major rehabilitation and construction to
the alley, such as the addition of a new permeable paver drainage system,
lighting, pavement and a sewer system, created a pedestrian-friendly area.
Additionally, garbage containers and services are located offsite for alley-
adjacent businesses, leaving the alley open for pedestrian and commercial
activities, such as the expansion of outdoor dining for adjacent restaurants
and planter boxes with vegetation.
Funding came from public and private sources, including the CRA/LA instituted
tax increment funding that covered the majority of the construction costs.54
HBID developed a supplemental assessment to generate significant revenue
for alley maintenance.55
The East Cahuenga Corridor Alley Association was
then created in 2011, composed of property and business owners, to ensure
that the alley is monitored and maintained over the long-term.
Another Notable Example: The City of Pasadena56
Pasadena’s installation of parking meters in the downtown Old Pasadena
District and its dedicated revenue was critical in financially supporting
the development and implementation of the Old Pasadena Streetscapes
and Alley Walkways Refined Concept Plan of 1995. Since then, the
Old Pasadena area has been flourishing with businesses connected by
walkable alleys.
The EaCa Alley Revitalization is notable as a commercial alley project with
economic benefits that also supports an inviting public pedestrian corridor. The
following are descriptions of the alley’s unique project elements, which support
a commercial environment:
• Businesses actively involved and directly benefiting. According
to the Los Angeles Sustainability Collaborative’s report, over half of alley
adjacent businesses responded positively to the alley investment and reported
a positive impact on the neighborhood one year after opening.51
EaCa Alley
is a prime example of how a public-private partnership and investment was
Figure 11: The East Cahuenga Alley after revitalization
Image Credit: Sarah MacPherson Besley, Hollywood Business Improvement District
After

Overview
The Historic Pioneer Square Neighborhood of Seattle, Washington is a
commercial and multifamily residential area that is the focus of the Alley
Network Project. The Alley Network Project, which facilitates and hosts
grassroots events and other temporary activities in alleys, is one example
of alley transformation efforts among an enthusiastic citywide alley culture.
The range of work facilitated by the Alley Network Project is useful for
demonstrating how alleys can be re-appropriated as community gathering
spaces in low-cost and temporary ways by various stakeholders (see Figure
12).
The interest in transforming Pioneer Square’s alleys into public spaces
originated from a 2009 study conducted by Copenhagen-based Gehl
Architects, considered world-leaders in placemaking. Gehl Architects identified
Pioneer Square’s alleys as having the potential to be successful pedestrian
spaces as they are narrow passageways that are outlined by human-scaled
buildings.57
The report found that Seattle’s downtown has approximately
217,500 square feet of public-space alleys, of which 85% were underutilized.58
The Alley Network Project is an initiative of the International Sustainability
Institute (ISI), a non-profit organization that focuses on research and projects
surrounding sustainability. ISI developed an interest in alleys as a result of
their office’s location adjacent to Nord Alley, one of the most well-known and
used alleys in the Pioneer Square neighborhood. The Alley Network Project
was created to forge collaborations between city departments, universities,
architecture firms and advocacy groupsto transform this service alley into
a public space.59
As a result, Nord Alley has been repeatedly transformed
by multiple stakeholders as a gathering place for a range of neighborhood
events, some of which will be outlined in the Noteworthy Project Elements
section. Together, the alley planning and stewardship brings community
together to create green alleys that function as common social space.
social focus: Seattle’s Alley Network Project
Environmental
SocialEconomic
• Diverse public community
events within the alley
• Temporary alley closure to
vehicles that forms a safe
pedestrian environment
Figure 12: Neighborhood party in Post Alley, Seattle
Image Credit: Mitch Reinitz
• Do-It-Yourself (DIY)
string lights
• Temporary signs and
seating for events in
alleys

Along with auxiliary efforts by the Seattle Department of Transportation and
police department to keep the alleys clean and safe, the Alley Network Project
contributes to Seattle alleys as vibrant public spaces. The following elaborates
the Alley Network Project’s unique socially focused elements:
• Robust and diverse programming within the alleys. Since 2008,
more than 8,000 people have attended alley events as part of the Alley
Network Project. Alley events and projects have included parties at First
Thursday Art Walk, lighting installations, a poetry carnival, “Alley Cat” pet
adoption event, holiday caroling, film screenings, World Cup and Tour de
France viewing, as seen in Figure 13, and many more.60
• The creation of a step-by-step guide on how to obtain an alley
event permit. One of the Alley Network Project’s unique contributions to
civic-driven alley events and projects is the way in which the organization has
increased access to understanding the City of Seattle’s street use permits
for alley closure. The “Alley Event Handbook,” created by the ISI, has helped
to guide alley programming for use by public space experts, community
organizers, marketing professionals and students as public spaces, stages
and galleries. This handbook provides instructions on obtaining necessary
permits that are specific to the City of Seattle, a sample permission letter and
helpful information for planning a successful alley event.
• Successful temporary efforts have inspired permanent efforts.
The success of the Alley Network Project’s temporary events have influenced
the ISI to create and support physical alley improvements within Pioneer
Square. The Alley Corridor Project, created in 2013 and funded by the City
of Seattle Department of Neighborhood, involves a cost-effective design to
restore alley surfaces and implement lighting for Pioneer Square’s alleys.
Through leveraging funding from government, private foundations and local
businesses, like the City of Seattle Neighborhood Matching Funds program
and Historic South Downtown, the Alley Network Project helps unite people
and provides financial support to create installations and host events in
Pioneer Square’s alleys.
The Alley Network Project’s events and activities in Pioneer Square’s alleys
are possible due to the City of Seattle’s implementation of the Clear Alley
Program in 2009. The Program removed all dumpsters located in Pioneer
Square’s alleys and replaced them with trash bags and a daily trash pick-up
service. The result of removing large dumpsters is the creation of clear and
open alleys that can be used for pedestrian walkways, neighborhood events
and additional commercial storefronts.61
Figure 13: World Cup in Nord Alley 2010
Image Credit: Jordan Lewis

Overview
Residents of the Boyle Heights neighborhood of East Los Angeles are leading
grassroots efforts to reclaim and enhance alleys in their residential area.
Community-led efforts began in 2003 to clean up the refuse-filled alleys and
use them as a public gathering space alternative for local streets affected by
gang violence.62
In a large city such as Los Angeles, residents and community
organizations are crucial drivers of neighborhood-based improvements. Boyle
Heights’ resident-driven, designed and implemented efforts are an example of
green alley development that is collaborative and low-cost with social benefits.
Alley improvements in Boyle Heights are for and by the people of the area.
For many of the residents, the alleys constitute access to the only open space
within the neighborhood. Two main collaborating entities support and guide
the resident-driven alley revitalization efforts in Boyle Heights. Union de
Vecinos, a Boyle Heights membership-based, community organization, and its
committees of residents have designed and constructed alley improvements in
alleys south of the I -10 Freeway. Green LA, a coalition involving professional
landscape architects and planners who work to transform Los Angeles streets
into sustainable complete streets,70
collaborated with residents to enhance
alleys north of the I -10 freeway in Boyle Heights; this includes working with
high school students through a Boyle Heights leadership program called
Legacy LA.63
Many of the alley improvements in Boyle Heights resemble residents taking
on local government functions themselves. Union de Vecinos committee
members have repaved alleys, installed traffic signs and beautified and
enhanced the alleys for use as social community spaces. For instance, in
collaboration with Green LA, residents installed a “sala publica” or public
living room, with benches, tables, planters and a community bulletin board for
community congregation, play and relaxation. Additionally, in a 2013 project,
Union de Vecinos committee members repaved two alley blocks with concrete
to create a safe and playable surface and painted the concrete blue and tan to
represent the beach (see Figure 14).64
social focus: boyle heights’ alley reclamation
Environmental
SocialEconomic
• Murals created by the community
• Painted alley floor
• Movable planters as mechanisms
for Do-It-Yourself (DIY) alley closure
to form a safe pedestrian space
• Alley programming creates social,
recreational spaces in alleys
Figure 14: Murals and painted pavement in an alley in Boyle Heights
Image Credit: Kris Fortin, LAStreetsblog
• Planters with vegetation

community events and social activities including movie nights, birthday parties,
as seen in Figure 60 on page 79, dances and monthly mercaditos, which
are small markets with vendors. Green LA’s work with the Boyle Heights-
based high school leadership program, Legacy LA, also uses the alleys as
educational opportunities for students to design a green alley, create murals
and learn how to maintain the space.68
Due to the DIY (Do-it-Yourself) and resident-driven nature of the efforts, the
alley revitalization in Boyle Heights is largely implemented without permits.
This strategy allows for swift improvements in an area that has experienced
what Rasmussen Cancian describes as many years of municipal neglect.69
Some alley events have been visited by the Los Angeles Police Department,
but only one event was closed down by the LAPD due to a lack of permits.
70
Boyle Heights’ alley reclamation efforts are noteworthy in their creative
and community-driven strategies to achieve social benefits. The following
elaborates on the unique elements of Boyle Heights’ alley efforts:
• Incremental improvements, social benefits. Over a decade-long
progression of improvement has led to pot hole filling, alley repaving, installing
traffic signs, pedestrian lighting, painting murals on walls and pavement,
as seen in Figures 14 and 15, planting vegetation and installing benches
and shade structures,65
as well as an excitement and momentum within
the community where now approximately 20 alleys have been revitalized.66
Landscape architect and collaborator Steve Rasmussen Cancian of Green LA
communicates that one key objective of alley efforts is to develop innovative
approaches that increase the use-value of alleys for current residents, many
of whom have been in the area for entire lifetimes, without increasing the
exchange-value of the neighborhood for potential gentrifiers.67
• Programming and expanded uses in the alleys. Alley reclamation
efforts in Boyle Heights have resulted in the creation of inviting spaces for
Figure 15: Painted alley floor in Boyle Heights
Image Credit: Boyle Heights Beat
Other Notable Examples
Montreal71
The City of Montreal in the Canadian province of Quebec is another
example of citizen-driven efforts to green residential alleys. Citizens who
wish to create a green alley in their neighborhood must apply to their local
eco-district, a neighborhood-based organization located throughout the city.
The eco-district mobilizes residents while residents organize and perform
the work and maintenance for the green alleys.
San Francisco Living Alleys Initiative72
The San Francisco Planning Department’s Living Alleys Initiative
is a notable city-led and citizen-driven example to the design and
implementation of a network of alleys. The SF Planning Department is
currently working on the Market Octavia Living Alleys Project, which builds
upon the success of previous alley efforts. The City defines living alleys
as a narrow, low-volume traffic street that is designed to focus on livability,
instead of parking and traffic, and primarily used for pedestrians and
bicyclists as well as space for social uses.

Overview
The Green Alley Initiative and Green Alley Demonstration Project in Austin,
Texas seek to transform underutilized alleys into community assets with
multiple benefits.73
While the previous examples featured in this report have
more than one objective, the Green Alley Initiative and Demonstration Project
stand out as truly multi-foci: the goals squarely fit in environmental, social and
economic categories without emphasizing one in particular, thus representing
a new category. These goals are to: support compact neighborhoods; increase
sustainability and performance of the public right of way; connect alleys to
affordable housing; and activate and beautify alleys to increase public safety
and social interactions.74
The Green Alley Initiative and Demonstration Project
are in line with the City of Austin’s broad sustainability goals and objectives for
citywide affordable housing, and thus prime examples of how green alleys can
have broad, multi-foci goals.
The Green Alley Initiative and Demonstration Project emerged from years of
applied, community-engaged design research and builds upon the success of
the Alley Flat Initiative.75
This initiative began in 2005 as a collaborative effort
between universities, the city and the community to design and incorporate
secondary dwelling units, or ‘alley flats’, into pre-existing homes along Austin’s
extensive network of underutilized alleys.76
Alley flats are small, detached
residential units, often referred to as accessory dwelling units, which are
tucked behind existing main houses on large lots and accessed from the
alleyway.85
The Alley Flat Initiative acknowledges alleys not only as access
points to new housing but also as community recreation space and green
infrastructure that filters storm water through rain gardens.77
Thus far two alley flat prototypes have been constructed (See Figure 16 for
alley flat prototype two: Lydia Street).78
These small, single-family homes are
designed to be both affordable and sustainable. Future alley flats would be
earmarked for residents who earn 80 percent or less of the median family
income and centrally located in East Austin, enabling residents to have a
shorter commute.79
Alley flats are conceived of as green housing alternatives
Environmental
SocialEconomic
multi-foci: Austin’s Green Alley Initiative and Demonstration Project
Multi-Foci
• Pervious pavement
• Affordable housing
• Energy efficient residential
unit designs
• Planters that act as boxes
for native plants, herbs and
seating
• Recycled materials
• Colored concrete pavement
• Public art/signage
Figure 16: Alley flat prototype two: Lydia Street
Image Credit: The Alley Flat Initiative

with highly insulated walls, a system to use reclaimed water and efficient air
conditioning, all to reduce electricity use and save residents money.80
The Green Alley Demonstration Project, located in the east Austin
neighborhood of Guadalupe, was spearheaded by the City of Austin’s Office
of Sustainability and Public Works Department, in collaboration with multiple
city departments and public-private partners.81
City departments have
been responsible for permitting, funding and design for public right-of-way
improvements and assisted in the construction of the alley flats prototypes.
Additional collaborators include the Guadalupe Neighborhood Development
Corporation (GAIN), the Austin Community Design and Development Center,
the University of Texas, Center for Sustainable Development, the University of
Texas, School of Architecture and cross-departmental collaboration in the City
of Austin. Specifically, the University of Texas has dedicated several student
studios to designing this project, including surveying the neighborhood,
identifying the best alley site and incorporating resident inputwhileGAIN
participated as an active stakeholder and leader on the affordable home site.82
The Environmental Design Research Association gave a Great Places Award
to the Demonstration project in 2014 for its integration of design, research and
concern for human factors.83
Austin’s Green Alley Initiative and Demonstration Project are characterized
by multiple and diverse goals that aim to achieve numerous benefits. The
following elaborates on the Green Alley Initiative and Demonstration Project’s
unique elements:
• A city-led effort with multiple co-benefits. The Green Alley Initiative
and Demonstration Project are examples of a city-led effort to achieve a
comprehensive array of benefits. According to Austin’s Office of Sustainability,
“the pilot project serve[s] as a micro-scale model of neighborhood
sustainability that exemplifies Imagine Austin’s [Comprehensive Plan] vision
and integrates many priority programs including: compact and connected
investments, green infrastructure, household affordability, sustainable
water resources, and the creative economy.84
” Further, the Green Alley
Demonstration Project has helped influence policy by formally recommending
updates to infill housing-related regulations as part of CodeNEXT, the city’s
initiative to revise the Land Development code.85
• A mix of environmental, social and economic development
features. With significant input from residents through community
workshops, the Green Alley Demonstration Project incorporates green
infrastructure elements such as “colored concrete pavement, pervious
pavement, rain gardens, native landscaping, herb gardens and recycled
materials, such as river rocks in planters and fly ash in concrete,along with
social gathering areas and public art.86
Additional notable design features
include planters that could be used as gardens, pollinator habitats, alley
markers or seats, as seen in Figure 17 and 18, which were designed and
constructed through a collaboration between University of Texas students and
GAIN.87
Figure 17: Before and after view of alley with planters and native landscaping, along with
community members
Image Credit: The City of Austin, Office of Sustainability
Before After

Figure 19: Conceptual rendering of the Green Alley Demonstration Project
Image Credit: The City of Austin, Office of Sustainability
In Spring 2014, the City of Austin implemented the first phase of the Green
Alley Demonstration Project while phase two of the demonstration project,
spearheaded by students from the University of Austin, Texas and the
Guadalupe Neighborhood Development Corporation (GNDC) was completed
in summer 2014. Funding for the project came from a grant awarded by the
Austin City Council.88
While the Austin Community Design and Development
Center provided insights on alley flat development for the project during the
initial phases of design work, GAIN is designated as a responsible party for
landscape maintenance along the alley.89
A post-occupancy evaluation has
been in effect since fall 2014 in order to understand the degree to which
intentions and aspirations aligned.90
Figure 18: Planters in Guadalupe neighborhood alley in East Austin, designed and constructed by
University of Austin students
Image Credit: University of Texas at Austin

Endnotes
Chicago’s Green Alley Program
25
Transforming Alleys into Green Infrastructure for Los Angeles. Rep. Los
Angeles: Center for Sustainable Cities, U of Southern California, 2008. Print.
26
“UCLA Research: Chicago Green Alley Program Case Study.” Message to
Janet Attarian. 7 Sept. 2014. E-mail.
27
The Chicago Green Alley Handbook: An Action Guide to Create a Greener,
Environmentally Sustainable Chicago. Rep. Chicago Department of
Transportation, 2010. City of Chicago, Department of Transportation. Web. 20
June 2014.
28
Attarian, Janet L. “Greener Alleys.” United States Department of
Transportation - Federal Highway Administration: Public Roads 73.6 (May/
June 2010): n. pag. FHWA-HRT-10-004. Web. 12 Sept. 2014. <http://www.
fhwa.dot.gov/publications/publicroads/10mayjun/05.cfm>.
29
Ibid.
30
Ibid.
31
“Green Alleys.” City Service: Streets, Alleyways and Sidewalks. City of
Chicago, Department of Transportation, n.d. Web. 10 July 2014.
32
Attarian, Janet L. “Greener Alleys.” United States Department of
Transportation - Federal Highway Administration: Public Roads 73.6 (May/
June 2010): n. pag. FHWA-HRT-10-004. Web. 12 Sept. 2014. <http://www.
fhwa.dot.gov/publications/publicroads/10mayjun/05.cfm>; “Green Alleys.” City
Service- Streets, Alleyways and Sidewalks. City of Chicago, Department of
Transportation, n.d. Web. 10 July 2014.
33
“People Alleys.” Make Way for People. City of Chicago, Department of
Transportation, n.d. Web. 13 Sept. 2014.
Sun Valley’s Elmer Paseo Stormwater Improvements Project
34
Belden, Edward, MESM, and Morris, Kristy, Ph.D. The Council for
Watershed Health. The Elmer Avenue Neighborhood Demonstration Project:
Measuring the Success of Green Infrastructure. Rep. N.p.: n.p., n.d. Print.
35
Alduenda, Eileen. Researcher/ Project Manager for the Council for
Watershed Health. Telephone interview. 23 July 2014.
36
Steele, Nancy L.C., Comp. The Los Angeles & San Gabriel Rivers
Watershed Council. N.p., n.d. Web.
37
Alduenda, Eileen. Researcher/ Project Manager for the Council for
Watershed Health. Telephone interview. 23 July 2014.
38
Belden, Edward, MESM, and Morris, Kristy, Ph.D. The Council for
Watershed Health. The Elmer Avenue Neighborhood Demonstration Project:
Measuring the Success of Green Infrastructure. Rep. N.p.: n.p., n.d. Print.36
http://watershedhealth.org/programsandprojects/was.aspx
39
Ibid.
40
Ibid.
41 “
City of Los Angeles Bond Measure O.” City of Los Angeles Bond Measure
O. City of Los Angeles Stormwater Program, n.d. Web. 21 Jan. 2015.
42
Ibid.
43
“Follow the Green Paved Alleys: City of Los Angeles Stormwater Program.”
City of Los Angeles Stormwater Program. 1 Jan. 2011. Web. 5 Oct. 2014.
<http://www.lastormwater.org/blog/2011/01/follow-the-green-paved-alleys>.;
United States of America and People of the State of California ex rel.
California Regional Water Quality Control Board, Los Angeles Region v.
City of Los Angeles. United States District Court for the Central District of
California. Civil Action No. 01-191-RSWL. (Filed 23 July 2013); Drayse,
Rebecca. “Stormwater: Stormwater: A water supply opportunity A water supply
opportunity Urban Water Reuse Partnership Project between TreePeople
Urban Water Reuse Partnership Project between TreePeople and the Los
Angeles Department of Water and Power and the Los A.” State Water Board
and the Water-Energy Climate Action Team Climate Change Scoping Plan
Implementation Workshop, Measure W-4: Urban Water Reuse. TreePeople
and the Los Angeles Departmento of Water and Power. 17 June 2009.
Lecture.
Hollywood’s East Cahuenga Alley Revitalzation Project
44
Besley, Sarah. Associate Executive Director of the Hollywood Business
Improvement District. E-mail interview. 27 Aug. 2014.
45
Burgos, Lila and Sarkisian,Tamar. East Cahuenga Alley Revitalization
Project: Best Practices for Creating a Pedestrian-Friendly Urban Alley. October
2013. Los Angeles Sustainability Collaborative.
46

De La Fuente, Carlos. Project Manager of the Street & Stormwater Division
of the Bureau of Engineering, Dept. of Public Works in the City of Los Angeles.
Personal interview. 15 July 2014.
47
48
49
Personal interview. 15 July 2014.
50
51
Personal interview. 15 July 2014.; In the City of Los Angeles, there is a policy
in place that allows for the implementation of permeable pavement under the
condition that non-city entities assume responsibility for maintenance and
repairs.
52
Belvins, Aaron. “From Crime and Grime to Wine and Dine.” Park Labrea
News/ Beverly Press. 1 Mar. 2012. Web. 21 Jan. 2015. <http://beverlypress.
com/2012/03/from-crime-and-grime-to-wine-and-dine/>.
53
Newell, J. P., et al. Green Alley Programs: Planning for a sustainable urban
infrastructure? J. Cities (2012), http://dx.doi.org/10.1016/j.cities.2012.07.004.
54
Ibid.
55
Improvement District. E-mail interview. 27 Aug. 2014.; Burgos, Lila and
Sarkisian,Tamar. East Cahuenga Alley Revitalization Project: Best Practices
for Creating a Pedestrian-Friendly Urban Alley. October 2013. Los Angeles
Sustainability Collaborative.
56
The City of Pasadena. Old Pasadena Streetscapes and Alley Walkways
Refined Concept Plan. Adopted by City Council on July 24,1995.
Seattle’s Alley Network Project
57
Gehl Architects and the City of Seattle, Department of Transportation.
Downtown Seattle Public Spaces & Public Life. Rep. N.p.: n.p., 2012. Print.
58
Fialko, Mary, and Hampton, Jennifer, in Collaboration with Gehl Architects,
UW Green Futures Lab, and Scan Design Foundation. Seattle Alley Integrated
Handbook: Activating Alleys for a Lively City. Rep. N.p.: n.p., 2011. Print.
59
These stakeholders include the University of Washington Green Futures
Lab, local architecture and landscape architecture firms, the Alliance for
Pioneer Square, Feet First, the Seattle Parks Foundation, the Seattle
Department of Transportation and Pratt Fine Arts Institute.
60 “
About the Alleys.” Alley Network Project. N.p., 2010. Web. 2 July 2014.
61
The City of Seattle. CleanScapes Clear Alleys. Web. 10 July 2014. <http://
www.cleanscapes.com/clearalley.html>.
Boyle Heights’ Alley Reclaimation
63
Cancian, Steve Rasmmusen. E-mail interview. 6 Sept. 2014.
64
“About Living Streets LA.” Living Streets LA. N.p., n.d. Web. 21 Jan. 2015.
65
Harper, Holly. Green LA Landscape Architect.Telephone interview. 10 Sept.
2014
66
Cancian, Steve Rasmmusen. E-mail interview. 6 Sept. 2014.; Fortin, Kris.
“Boyle Heights Residents Give Alleys a Facelift to Promote Safety in Their
Community.” Boyle Heights Beat 21 Mar. 2013: n. pag. Print.
67
Harper, Holly. Green LA Landscape Architect. Telephone interview. 10 Sept.
2014
68
Cancian, Steve Rasmmusen. Telephone interview. 6 Sept. 2014.
69
Harper, Holly. Green LA Landscape Architect. Telephone interview. 10 Sept.
2014
70
Cancian, Steve Rasmmusen. Telephone interview. 6 Sept. 2014.
71
“Guide Verdir.” Ruelle Verte. N.p., 16 Aug. 2008. Web. 05 Mar. 2015.
;
O’Shea, Michael. Telephone interview. 26 July 2014.
72
“Market & Octavia Area Plan.” San Francisco Planning Department :.
N.p., n.d. Web. 05 Mar. 2015.; San Francisco Planning Department. Market
& Octavia: An Area Plan of the General Plan of the City and County of San
Francisco. 2010.; Winslow, David. Telephone interview. 30 July 2014.

Austin’s Green Alley Initiative and Demonstration Project
73
“The Green Alley Initiative.” Office of Sustainability, City of Austin. N.p., n.d.
Web.
74
Athens, Lucia. Chief Sustainability Officer, Office of Sustainability for the City
of Austin. E-mail interview. 20 Sept. 2014.
75
“2014 Place Research: Green Alley Demonstration Project.” The
Environmental Design Research Association. EDRA, n.d. Web. 21 Jan. 2015.
76
“Vision.” The Alley Flat Initiative. N.p., n.d. Web.
77
Ibid.
78
Ibid.
79
Ibid.
80
Green Alley Demonstration Project. Rep. Center for Sustainable
Development: City of Austin, n.d. Web. 2 July 2014.
81
Ibid.
82
“Green Alley Demonstration Project.” Office of Sustainability, City of Austin.
N.p., 2012. Web.
83
Wilson, Barbara Brown, Connor Bryan, and Jane Winslow, eds. Public
Interest Design, Summer Course Series: 2011. Rep. Austin, Texas: Public
Interest Design, 2011. Print.
84
“Green Alley Demonstration Project.” Office of Sustainability, City of Austin.
N.p., 2012. Web.
85
Ibid.
86
Green Alley Demonstration Project. Rep. Center for Sustainable
Development: City of Austin, n.d. Web. 2 July 2014.
87
Ibid.
88
Ibid.
89
Snyder, Emery Reif. “Council Looks to Continue ‘Greening’ East Austin
Alleys.” Council Looks to Continue ‘Greening’ East Austin Alleys. KUT.org, 6
June 2013. Web. 05 Mar. 2015.
90
“The Environmental Design Research Association.” EDRA. N.p., 2014.
Web. 05 Mar. 2015.
Chapter page image credit: City of Austin, Office of Sustainability

chapter 3 steps to green alley development: theavalon
green alley network Demonstration Project

37Chapter 3. The Avalon Project
Introduction
This chapter provides a case study of the Avalon Green Alley Network
Demonstration Project for the purpose of guiding future action and potentially
informing other alley revitalization efforts. The Avalon Project is a pilot project
in South Los Angeles. In partnership with the City of Los Angeles, The Trust
for Public Land is leading this collaborative effort to green a network of alley
segments within a residential neighborhood of the area (see Figure 20).
The chapter begins with an overview of the Avalon Project, including its
significance, goals and the community context for those goals. Next, the main
section of this chapter tells the story of the Avalon Project, breaking down
the project into main steps typical of alley revitalization efforts. The authors
then describe the South Los Angeles Green Alley Master Plan and potential
opportunities for other future green alley efforts.
Image Credit: SALT Landscape Architects

Chapter 3. The Avalon Project38
Status
Many years of organizing, community engagement, planning, and more have
gone into the Avalon Green Alley Network Demonstration Project. This work
creates an important foundation for the physical construction scheduled for
2015. While many physical improvements are still to come as of the writing of
this report, community residents are already actively involved in transforming
the selected alleys, such as alley clean ups, as Figure 21 illustrates.
Overview and importance
Although other alley projects have been built in Los Angeles, the Avalon Green
Alley Network Demonstration Project represents many firsts. It is the first
alley revitalization project in the high-density, working-class area of South Los
Angeles, the first comprehensive alley retrofit to simultaneously incorporate
green elements and vehicles in Los Angeles and the city’s first retrofitted
green alley network. The Trust for Public Land and other project proponents
offer the Avalon project as a replicable model for maximizing the potential for
alleys as open space to meet multiple community needs. The Avalon Project
also provides lessons about the importance of community participatory design
as well as ideas for the innovative re-use of existing infrastructure to meet
public health and ecological needs.95
The Avalon Project will transform six alley segments that create a network
and a connection between residential homes and community amenities,
including the local schools, parks, and local grocery store. The multi-benefit
Avalon Green Alley Network spans an approximately 35-acre neighborhood
and is comprised of six city blocks and alleyways. Each alley ranges from
approximately 1/4 to 1/3 acre, which creates a combined total of 1.8 acres.96
The project area is bordered by Vernon Avenue to the north, Central Avenue
to the east, Slauson Avenue to the south and the Harbor Freeway (110) to the
west(see Figure 22). As a demonstration project, two of the six alleys within
the network are targeted as full green infrastructure retrofits, totaling 0.61
acres. In addition, the entire network will be planted with nearly 150 street
trees.97
Figure 21: Community residents cleaning an alley in the Avalon Project site

Avalon Green Alley Network Demonstration Project
New Pedestrian Walkway
Figure 22: The Avalon Project site
Image Credit: The Trust for Public Land and SALT Landscape Architects

Rationale
South Los Angeles has the highest concentration of alleys in the city.98
Inventory studies of these alleys have shown that a majority are unsafe,
unused, and refuse-filled environments.99
The Avalon Green Alley Network
Demonstration Project is demonstrating that while transforming these alleys
will take considerable effort, the alleys could represent a significant opportunity
for much needed public open space.
Los Angeles ranks last among major cities in per capita open space; the area
of South Los Angeles and the South Park neighborhood are disproportionately
affected.100
The National Recreation and Parks Association recommends 10
acres of park space per 1,000 residents, but Los Angeles has 1.107 acres
and South Los Angeles has a mere 0.42 acres of park space per 1,000
residents.101
These statistics define South Los Angeles as “park poor.” (See
Figure 23)
With a lack of open space and recreation opportunities, perhaps not
surprisingly, residents of South Los Angeles suffer from the highest rates of
obesity, diabetes, and heart disease in Los Angeles County.102
Furthermore,
resources to deal with these health issues are limited in South Los Angeles.
South Los Angeles is identified as a “Severely Disadvantaged Community” in
terms of income. The median household income (MHI) is $31,256 (53 percent
of the statewide MHI).103
There are also environmental challenges in the area, including polluted runoff
and stormwater management. The Los Angeles River traverses through South
Los Angeles, carrying polluted runoff and stormwater from city streets to the
ocean. Green infrastructure improvements can help the local area and the City
of Los Angeles comply with water quality standards. Water quality compliance
related to the Clean Water Act can be an impetus for implementing multi-
benefit green alleys.
In sum, green alleys in South Los Angeles could address a range of
community challenges by facilitating physical activity, active transportation,
watershed health among other benefits.104
Figure 23: Level of park need in the City of Los Angeles with circle indicating the boundaries the
South Park neighborhood
Image Credit: The Trust for Public Land 2014 ParkScore© Index

Goals
The Trust for Public Land has the following project goalsfor the Avalon Green
Alley Network Demonstration Project:105
• Improve community health and fitness. The South Park
neighborhood in South Los Angeles is a dense residential, park-poor
community. Alleys are an important land resource in this area that can be
transformed into user-friendly green spaces that promote physical activity.
The network of alleys can function as a fitness path to encourage walking,
cycling, recreation and exercise. The green alley network could help to
serve a need not otherwise met by existing parks; alleys can provide
residents and their children with an outdoor area to enjoy directly adjacent
to their homes and schools.
• Increase safety. Safety concerns are one of the top priorities of alleys
within this South Los Angeles community. Through renovating and greening
the alleys, The Trust for Public Land seeks to increase residential usage
and stewardship, which could promote reductions in crime, illegal dumping,
and pollution. Improvements will extend to the surrounding street network in
the form of added streetlights, crosswalk striping and signage to encourage
pedestrian use, safe passage and walkability.
• Provide neighborhood connections. The Avalon Project intends
to provide connections between homes and the local grocery store,
parks and school sites. Signs, lighting and pavement markings will be
implemented to encourage residents to use the alleys as green pedestrian
pathways throughout the neighborhood.106
The green alleys are designed
to adaptively re-use existing infrastructure in order to integrate a green
network of corridors into the fabric of the neighborhood.
• Improve water quality and supply. Infrastructural improvements,
such as permeable pavers and bioswales, are planned for the Avalon
Project, with the objective to decrease urban run-off, recharge groundwater
and help improve water quality in the Los Angeles River Watershed
and coastal waters. For example, permeable pavers will be installed to
help prevent standing water, as seen in Figure 24, and direct rainfall not
otherwise captured by fruit tree and vine pocket planters along the alleys.
This design allows water to percolate through porous pavement to the
ground soil, providing natural drainage, and then filter under the permeable
surface layer to recharge the ground water table.
• Green and cool the urban matrix. The Avalon Project features green
infrastructure improvements including light colored pavement to reduce
the urban heat island effect as well as drought tolerant plantings to create
shade and help green and beautify the neighborhood. The addition of
approximately 150 street trees is intended to further these cooling efforts
and help increase canopy coverage.
Figure 24: Existing conditions of an alley in the South Park neighborhood with standing water

Project Development Timeline
2009 201520122010 2011 2013 2014
Foundation: a) Studies; b) Political and Municipal Support and; c) Community Outreach and Engagement
Partnerships + Funding
Design
2016
Construction + Implementation
Monitoring + Evaluation
Maintenance + Stewardship
Monitoring + Evaluation
2017
Steps to alley transformation
The Avalon Green Alley Network Demonstration Project has involved a multi-
step development process. This section describes that process, with details
that could be useful for readers thinking about how to approach future alley
greening efforts, especially medium and large scale projects. (Small scale
efforts may not involve such comprehensive steps). The main steps include:
1) Laying the Foundation with:
a) Research and Pre-Design Studies;
b) Political and Municipal Support and;
c) Ongoing and Integrated Community Outreach and Engagement;
2) Partnerships and Funding;
3) Design and Permitting;
4) Construction and Implementation;
5) Maintenance and Stewardship and;
6) Monitoring and Evaluation
The below development timeline visualizes these steps and their duration:

1. Laying the Foundation
Conducting research, building political and municipal support, and
focusing on community outreach and engagement were key first steps to
development of the Avalon Green Alley Network Demonstration Project.
Research and Pre-Design Studies
Research and data helped spur general interest in alleys in Los Angeles and
laid the foundation for efforts on the Avalon Project. These research efforts
included:
• The University of Southern California’s Center for Sustainable Cities (CSC)
published “Transforming Alleys into Green Infrastructure in Los Angeles
(2008),” which sparked the idea of alleys as usable space and locations for
green infrastructure. This report included physical inventories of alleys in Los
Angeles, which identified the benefits of green alleys and made several policy
recommendations. One main policy recommendation was to develop a Green
Alleys Program and Subcommittee within the City’s Green Streets Committee
to facilitate green alley implementation.107
• The Cal Poly Pomona Landscape Architecture graduate student studio and
the Los Angeles Community Redevelopment Agency (CRA/LA) collaborated
to produce a Vision Plan for South Los Angeles in 2008, which included alley
improvements. Out of this process, the CRA/LA identified the South Park
neighborhood as one of the priority locations for improvements. The CRA/LA
referred to the Avalon Project at this time as the “Eco-Alley Walk” in South Los
Angeles.
• The Trust for Public Land and the CRA/LA conducted studies to assess what
was possible for alleys in South Los Angeles. This included looking at how
other cities developed green alleys. In addition, The Trust for Public Land
and the CRA/LA conducted feasibility studies to better understand existing
conditions in the South Park neighborhood of South Los Angeles, as seen in
Figure 29. This involved studying pedestrian and vehicle circulation, examining
adjacent intersections and determining potential alley segments for closures
to vehicles. One study found that the project site had a significant lack of
street trees, faded crosswalks, an absence of Americans with Disabilities Act
(ADA)108
accessible sidewalk ramps and inconsistent lighting in the alleys,
among others. Research also identified three segments for closure, based on
surveying residents’ comfort levels and projecting the impact that alley closure
would have on residents’ use of the alleys for parking and accessing their
properties and garages.
Overall the findings helped determine that an alley network project was
possible due to the proximity of the alley segments and nearby amenities. As a
result, the scope of the project widened to include an alley network that could
increase connectivity within the area and function as alternative pedestrian
passageways.
Figure 25: Existing conditions of an alley in the South Park neighborhood with illegal dumping

LA Nuisance Alley Conversion Program: An Early Solution
While current efforts to improve alley conditions focus on increasing
public access, early efforts by the City of Los Angeles focused on closing
alleys for strict private use. The LA Nuisance Alley Conversion Program
was established in the mid-90s as a solution to mitigate illegal dumping
and crime. Under the program, the City installed 8-foot high wrought-
iron gates and gave the keys to residents, who were responsible for
maintaining the enclosed property.1
In the program’s peak, the City had
sealed off approximately 430 alleys citywide.2
However, a superior court
ruling in 2004 deemed the program illegal and halted further gating
because they violated the publics’ access to a city’s public right-of-way.3
The LA Nuisance Alley Conversion Program provides important historical
context to alley efforts in Los Angeles; the discontinuance of the program
marks a notable shift in the city's perspective on alleys, which helped
pave the way for green alley development.
1
Martin, Hugo. “Iron Gates Taking Bite Out of Back-Alley Crime.” Los Angeles Times 19 Oct. 1998. Web. 15
Dec. 2014. <http://articles.latimes.com/1998/oct/19/local/me-34082>.
2
Ibid.
3
Cassidy, Arly, Josh Newell, and Jennifer Wolch. Transforming Alleys into Green Infrastructure for Los Ange-
les. Rep. Los Angeles: Center for Sustainable Cities, U of Southern California, 2008. Print. (p.2)
Initial Municipal Support and Coordination
The City of Los Angeles responded to the aforementioned research by
beginning to coordinate efforts within City departments and other stakeholders
outside of the municipal government. This initial City organizing around
greening alleys was also fueled by growing concerns of stormwater runoff
pollution.109
In response, the City of Los Angeles formed the Green Alleys
Subcommittee of the City’s Green Streets Committee in 2008. Jennifer Wolch
of USC’s Center for Sustainable Cities helped lead the efforts with city staff.
The Green Alleys Subcommittee was comprised of a group of individuals
representing the City of Los Angeles’ Department of Public Works, Department
of Planning Urban Design Studio, the Los Angeles Community Redevelopment
Agency (CRA/LA), The Trust for Public Land and USC’s Center for Sustainable
Cities. Using Chicago’s Green Alley Program as a source of inspiration,
the purpose of the Subcommittee was to develop, design and determine
successful implementation strategies for a green alley program at the citywide
scale.110
Examples of the Subcommittee’s tasks included investigating funding
opportunities, developing green alley selection criteria, and creating a tiered
and prioritized list of pilot projects.111
The result of this process was the development of a menu of six green alley
design schemes that can be used as a guide for engineering and design. All
of the schemes include Best Management Practices (BMPs) for managing
stormwater, such as permeable pavers, bioswales, and other integrated
stormwater management features along with their associated estimated
costs per square foot. These green alley scenarios were incorporated into
the “Rainwater Harvesting Program: Green Street & Green Alleys Design
Guidelines,” in 2009 as a tool to guide the city in the creation of projects with
stormwater management components.
Once the green alley design principles and pilot projects were established
and in progress, the Subcommittee’s responsibilities merged with the City’s
Green Streets Committee. Presently, any projects with planned or potential
green infrastructure elements are to refer to the “Green Street & Green Alleys
Design Guidelines” for BMPs, costs, necessary permits and implementation
Figure 26: Gated alley in the city of Los Angeles
Image credit: theeastsiderla.com

guidance. The Bureau of Sanitation, Watershed Protection Division continues
to coordinate and promote alley conversion and other green infrastructure
projects across the city of Los Angeles.
The initial municipal support and coordination gained through the development
of the City’s Green Alleys Subcommittee created a supportive environment to
Figure 27: Early analysis of the Avalon Project site area showing a lack of street trees
further realize green alley revitalization in South Los Angeles. In 2008, shared
interests in South Los Angeles alleys led The Trust for Public Land and the
CRA/LA to begin developing what was referred to at the time as the Eco-Alley
walk project in the Avalon neighborhood of South Los Angeles. The result was
a formalized partnership in 2009 between The Trust for Public Land and CRA/
LA. To jumpstart the process, CRA/LA provided funding for outreach, design

and construction documents for two alleys near the Avalon Eco-Alley Walk.
Figure 27 shows an early analysis of the Avalon Project site area, revealing a
significant lack of street trees. Through this partnership process, The Trust for
Public Land began their work with the Avalon Project.
Ongoing and Integrated Community Outreach and Engagement
While main construction for the Avalon Project is due to break ground in early
2015, community members have been engaged with the project since 2009.
In many ways, the foundation for the Avalon Project is built upon community
outreach, engagement and empowerment. For The Trust for Public Land,
community outreach was not a box to check on a to-do list but rather an
integral component to the entire project; ongoing and integrated community
outreach is seen as the process of building community around the Avalon
Project.112
Yet, integrating outreach into every project development step was not without
initial challenges. The first initial challenge was eliciting consistent participation
from residents otherwise disengaged from municipal decision-making
processes. The second challenge came from the degraded state of the alleys
in the Avalon Project site and the negative perception of alleys as unpleasant
places for trash. For many residents, the concept of transforming alleys into
desirable public places with sustainable co-benefits was a new concept.
The solutions to these initial challenges involved ongoing and integrated
engagement strategies. First, to solve the issue of inconsistent participation,
The Trust for Public Land actively engaged with a range of community
members, including residents, local schools, and community-based groups
which led to the formation of the Avalon Green Alley Green Team. The Avalon
Green Alley Team’s efforts have included alley cleanups, tree planting,
community art projects such as murals, and the formation of a neighborhood
watch in coordination with the local police division.113
Additionally, instead of
time-intensive community design charrettes, community members were given
the opportunity to provide design input many times over the development
process during events and activities.
Coupling events and activities with gaining community input has also helped to
solve the second issue of the overall negative perception of the alleys. Visually
learn about green alley options and weighing in on the types of green alley
elements they wanted to see in their neighborhood, as seen in Figure 28 and
29, has helped community members to become mutual authors of the project.
Other formats have included presenting options of green alley elements
through conducting surveys, tabling, door-to-door engagement and interactive
flip books. The result of this engagement has been community input on mural
designs, planting types and green alley features. This flexible and adaptive
strategy has allowed The Trust for Public Land to receive input about the
community’s immediate concerns related to alley safety and cleanliness
while gathering feedback on green alley improvement possibilities. The Trust
for Public Land hopes that this ongoing community engagement process
promotes long-term stewardship and placemaking in the alleys.114
Figure 28: The Trust for Public Land presenting images of options for theAvalon Project to gain feedback

Examples of Integrated Community Outreach in the
Beginning of the Avalon Project
Community groups, residents and other stakeholders were heavily
involved in initial outreach activities to build excitement about green
alleys and discuss possibilities for green local alleys. Initial outreach
activities included:
• Door-to-door flyering, tabling, and living room meetings around: What
is a green alley?
• Presenting at schools, community centers, parent meetings and
neighborhood council meetings.
• Posting “No Dumping” signs and partner-led alley cleanups.
• Tree-care training and workshops in collaboration with TreePeople to
support the planted 150 street trees.
In order to expand upon ongoing and integrated community outreach and
engagement, each project step within this chapter is accompanied by a
sidebar of Integrated Community Outreach Examples. The purpose of each
sidebar is to highlight outreach methods used during each stage of the project
that could be relevant to future efforts. These examples are not an exhaustive
list of outreach and engagement strategies, but rather noteworthy examples
that can aid in green alley development.
Figure 29: Interactive flip books presenting green alley options to residents

2. Partnerships and Funding Steps
A myriad of partnerships has set the foundation for the Avalon Green
Alley Network Demonstration Project to accomplish the diverse range of
goals and features.
Funding and Municipal Partnerships
Early in the development of the Avalon Green Alley Network Demonstration
Project, The Trust for Public Land established partnerships with multiple City
agencies to align the project with Citywide green infrastructure development
and to create strong inter-agency collaboration. As previously mentioned,
CRA/LA was The Trust for Public Land’s main City agency partner, until the
2012 dissolution of community redevelopment agencies in California, including
the CRA/LA. This partnership was key in jumpstarting the Avalon Project
in terms of providing seed money and coordinating the project with other
Citywide policy and planning efforts.115
After the dissolution of the CRA/LA,
the Bureau of Sanitation, Watershed Protection Division (BOS WPD) became
The Trust for Public Land’s primary City partner. BOS WPD’s main objective is
water quality, therefore, BOS WPD’s ownership of the Avalon Project centers
on the stormwater management components. Other municipal partnerships
included:
• City of Los Angeles Department of Planning
• City of Los Angeles Department of Transportation
• City of Los Angeles Department of Public Works - Bureaus of Engineering
and Street Services
• The inter-agency City of Los Angeles Green Streets Committee116
and Green
Alley Subcommittee117
• Los Angeles Fire and the Los Angeles Police Department, including the
Newton Division (see Figure 30).
• The Los Angeles Mayor’s Office of Community Beautification (supplied
materials for alley cleanups with the community as well as permission to
reprint the city’s ‘No Dumping’ sign in English and Spanish, as seen in Figure
31).
Figure 30: The Los Angeles Police Department, Community-Policy Advisory Board, Newton Division
participating in community event in an alley in the Avalon Project site area

Political and municipal support has been a critical component of the Avalon
Project. Council member Price’s entrance into office in July 2013 and his
associated focus on alleys in District 9 significantly nurtured the project. This
partnership, along with other significant partners, can be seen in Figure 32.
Furthermore, the partnership with BOS WPD enabled robust stormwater
management elements with the alleys due to their support, expertise and
access to funding. This specific partnership has helped The Trust for Public
Land to apply and secure grants related to stormwater management (See
the Partial List of Funding Sources on page 51 for these and other funding
sources).
Figure 31: ‘No Dumping’ Spanish sign posted in alleys in the Avalon Project site area
While some of the listed municipal partnerships were initially challenging to
foster, all of the aforementioned partners engaged in early-stage concept and
planning meetings to identify the Avalon Project as a potential model effort.123
As a non-profit organization approaching the City about an unprecedented
green alley network, The Trust for Public Land had to develop, navigate and
demonstrate the authorization process, which took multiple coordination
meetings, time and patience. This experience is further clarified in the
Partnerships and Funding section in on pages 70 and 71.
Figure 32: U.S. Representative Lucille Roybal-Allard and Los Angeles City Councilman Curren Price,
whose respective districts encompass the Avalon Project site, with students and faculty of Maya
Angelou Community High School, the Avalon Green Alley Green Team and The Trust for Public Land
staff

Other Partnerships and Funding118
The following additional partners collaborated with The Trust for Public Land
on various outreach, advocacy and design elements of the Avalon Project:
• Los Angeles Conservation Corps (LACC): The LACC Clean and Green
Division helped The Trust for Public Land to organize alley cleanups (See
Figure 36). They are the primary partners for street tree planting and near-
term watering.
• The Coalition for Responsible Community Development (CRCD): The CRCD
is a nonprofit community development organization in South Los Angeles who
has worked with The Trust for Public Land on alley cleanups, including graffiti
abatement. They are part of a long-term maintenance strategy for aspects of
the green alleys.
• Community Health Council (CHC)/ Coalition for an Active South Los Angeles
(CASLA): The CASLA, a branch of CHC, advocated for the Avalon Project
by highlighting it as a priority project for community health and promoting the
project to South Los Angeles residents and partner organizations.
• TreePeople: This environmental nonprofit connects Los Angeles residents
to the environment through tree plantings and tree-care activities. TreePeople
partnered with The Trust for Public Land to form the Avalon Green Alley Green
Team, training residents to care for and plant trees and co-hosting several tree
care and planting days in the neighborhood.
• Maya Angelou Community High School and Main Street Elementary School:
Located within the Avalon Project and part of the participatory design process,
school students participate in cleanups. The Trust for Public Land intends to
collaborate with the schools and facilitate the integration of the Avalon Project
features into their core curriculum.
Figure 33: Student cleaning up an alley in an Avalon Project alley site
• Jefferson High School: This adjacent high school formally hosted a Green
Design Academy and also has a green alley project. Jefferson High School
partnered with The Trust for Public Land on outreach activities (see Figure 33).
• California State Polytechnic University, Pomona, College of Environmental
Design, 606 Design Studio: The design studio, held in 2009, assisted The
Trust for Public Land in the early conceptual design of the Avalon Project.
• Council for Watershed Health: Monitoring and evaluation of water quality,
both before and after project implementation.
• Consultants and vendors: SALT Landscape Architects, Breen Engineering
civil engineers and Byer Geotechnical are Los Angeles-based consulting
firms that developed preliminary and final designs for the project. (A private
company will also be hired for the construction phase).

A Partial List of Funding Sources119
Creating a prioritization strategy for improvements was important to
establishing a fundable construction budget. This funding strategy has led
to a plan that does not apply the full range of greening and design elements
to every alley in the network; instead, the system allows The Trust for Public
Land to apply design features to select alley segments that fulfill certain
funding qualifications and thereby meet overall programmatic objectives.
Funding the select alley segments of the Avalon Project through grants, as
seen below, has led to a phased construction. This is in part due to the fact
that grant funding was not achievable for all phases simultaneously. Therefore,
the project’s implementation is broken down into three phases for construction.
Public Funding:
• City of Los Angeles Community Redevelopment Agency
• State of California Urban Greening Grant Program
• State of California Water Resources Control Board – Stormwater Grant
Program, Rounds One and Two
• State of California Coastal Conservancy
• City of Los Angeles Proposition O
• LA County Proposition A
Private Funding:
• The JIB Fund Community Building Initiative
• LA2050, an initiative of the Goldhirsh Foundation
• The National Fish and Wildlife Foundation
• Wells Fargo
• The Trust for Public Land
Examples of Integrated Community Outreach During the
Partnerships and Funding Phase
Developing multiple partnerships at varying levels with the South Los
Angeles area and the broader city was crucial to advancing the Avalon
Project. Diverse project elements has attracted a myriad of support
from many types of stakeholders to:
• Organize and facilitate monthly platicas, informal talks and
lectures, through partnerships with the Maya Angelou High School
and TreePeople, a Los Angeles-based environmental non-profit.
TreePeople provided structure, content and expertise around tree
planting and The Trust for Public Land provided information and
education around how residents can green their alleys. The resulting
platicas curriculum included a monthly meeting centered on tree
planting and green alleys.
• Develop the Avalon Green Alley Green Team to lead green alleys
Days of Service for alley clean-ups. Members earn a Green Team
T-shirt, as seen in Figure 48 on page 71, after attending five events or
platicas, which helps to create cohesion and excitement around the
Avalon Project.
• Facilitate graffiti abatement in partnership with CRCD and the Los
Angeles Conservation Corps.

3. Design and Permitting Steps
City Regulations
Before elaborating on the design elements, it is important to acknowledge
the role that City regulations played in the final design schematics. Specific
interactions with City agencies altered elements, materials and design
schematics of the Avalon Project while others facilitated the development
process. Meetings with City departments regarding design schematics
resulted in a refined palette of suitable materials; the City’s advice centered
on utilizing standard materials and avoiding the use of textures and colors
out of the context of road and pedestrian safety. Through the use of the
non-standard techniques and materials featured in the “Rainwater Harvesting
Program: Green Street & Green Alleys Design Guidelines (2009),” The
Trust for Public Land was able to navigate the City’s compliance related to
green infrastructure, including permeable paving, dry wells and other green
infrastructure elements suitable in the public right-of-way (see Figure 34).
The Avalon Project complies with permit requirements within the public
right-of-way. Ultimately, however, BOS WPD decided that no permits were
necessary because of the Avalon Project’s status as a pilot project.120
Instead,
a Memorandum of Agreement with The Trust for Public Land states that
BOS WPD is responsible for correct design features, liability, and complete
maintenance of the stormwater BMP elements.121
In order to achieve the alley closure in what is referred to as the North Alley
segment within the T-shaped alley, The Trust for Public Land employed the
precedent set by the East Cahuenga Alley Revitalization Project (EaCa Alley)
to designate the alley segment as a pedestrian mall. As previously mentioned
The various design schematics for the Avalon Green Alley Network
Demonstration Project, and ultimately the versions that will be
implemented, are products of a participatory and collaborative design
process and regulatory considerations.
Figure 34: Two examples of green alley scenarios developed by the City of Los Angeles’ Green Alley
Subcommittee
Image Credit: The City of Los Angeles

in the EaCa Alley case study on pages 24 and 25, the Pedestrian Mall Law
of 1960 within the California Constitution can be applied to alley conversions
into pedestrian-only spaces in California, which was the case in EaCa Alley.
A pedestrian mall designation restricts vehicle access in a public street, which
includes an alley, and enables exclusive or primary pedestrian travel.121
A Green Alley Network and System for Prioritizing
Improvements
As previously mentioned, one defining decision made early in the design
process was the broadened scope of the Avalon Project to a green alley
network. This decision also broadened the improvement possibilities and
enabled the idea that the network of improved alleys could function as
alternative pedestrian passageways throughout the area. As a result, the
Avalon Project proposes design amenities that are traditionally used in street
re-design or improvement projects, such as signage, art and street trees.
Additional public right-of-way and sidewalk improvements, such as bus
shelters, crosswalks, new curb and gutters, striping and traffic calming street
features, were inventoried during this process in order to lay the groundwork
for potential future municipal implementation.
In order to control costs, The Trust for Public Land developed a system
for prioritizing improvements: the Alley Retrofit TIER 1 and TIER 2 alley
improvement structure. This system allows identified alleys to receive one
of two treatments. Alley Retrofit TIER 1 involves low-impact development
projects in which alleys will have asphalt pavement replaced with permeable
materials to reduce stormwater runoff as well as planted vegetation and
espaliered fruit trees accented with public art. The remaining Alley Retrofit
TIER 2 alleys will be cleaned up and beautified with vines and artwork but will
not involve stormwater management elements.

A Summary of Design Features
A key intention for the design of the Avalon Project is a replicable model
that demonstrates a comprehensive approach to green alleys that can be
implemented throughout Los Angeles. With this in mind, it was imperative to
design transferable features that comply with City regulations and permitting.
The Trust for Public Land retained the refined material palette developed in
accordance with suggestions from multiple City agencies in order to create
a replicable project for the City of Los Angeles. While not all city agencies
approved the non-standard materials, willingness within the BOS WPD to
try new materials and promote pilot green infrastructure projects ultimately
created a window of opportunity for developing the project.122
The overall design concept for the Avalon Project began as the re-
appropriation of an auto-oriented alley into a pedestrian environment.
However, City standards required initial design elements be scaled back,
such as the use of tactile pavement as decorative features and a limited color
palette to differentiate alley markings from standard markings in the public
right-of-way. To avoid cost and time delay, hardscape materials were selected
from those that met with the City’s previously tested standards and the color
palette was limited to the standard colors used for public right-of-way spaces.
Despite some design restrictions, many creative elements will be used in
varying degrees throughout the network. These elements include permeable
paving, colored concrete, sandblasting, solar powered lights and recreational
elements, such as fruit tree planters and boulders for seating, along with
interpretive signage and design-based information inlaid into the paving. The
Trust for Public Land hopes that the combination of these design elements
will help to create a sense of place within the Los Angeles River Watershed,
and educate residents about pollution prevention and green infrastructure
benefits.123
Future steps will potentially include a fitness and walking loop and
additional artwork.
Pedestrians will share the green alleys network with vehicles, except for one
segment of a T-shaped alley in the northeastern corner of the network, which
is a pedestrian-only zone that will be closed to traffic. This 1,700-square-foot
public right-of-way will have specialized elements to help create a green
space and a nexus for outdoor gathering, positive community interaction, and
recreation(See Figure 36).124
While the parking feasibility study conducted in
the Research and Pre-Design Studies step identified that three alley segments
could be closed to vehicle traffic, further research prioritized one segment for
transformation into a pedestrian mall with prohibited vehicular access.
Design improvements of the Avalon Project will extend to the surrounding
street network by way of extensive street tree planting. To amplify surrounding
improvements, The Trust for Public Land’s vision of the Avalon Project
includes traffic calming and pedestrian-friendly improvements to surrounding
streets, such as speed bumps, bus shelters, enhanced crosswalks, advanced
crossing or “sharks teeth” and flashing warning pedestrian crossing signage at
strategic locations within the network.125
It is important to note that streetscape improvements are outside of The Trust
for Public Land and BOS WPD’s current scope, therefore their implementation
depends on how the Los Angeles Department of Transportation (LADOT)
and the Metropolitan Transportation Agency (MTA) decide to prioritize
investments.126
The Trust for Public Land hopes that these elements will
help connect and create safe crossings among the alley segments as well
as improve the pedestrian experience. The pedestrian enhancements may
be implemented through a prioritization system that allows The Trust for
Public Land to assign levels of priority to intersections and high pedestrian
traffic areas based on pedestrian usage, existing safety features, proximity to
schools and traffic speeds (see Figure 37).

Figure 36: Conceptual rendering of the T-shaped alley, pedestrian-only zone located in the northeastern corner of the network

6NETWORK: PROPOSED PRIORITY PROJECTS
AVALONGREENALLEYNETWORK:PEDESTRIANENHANCEMENTS
2 2
4
4
1 33
3
MAINST
WOODLAWNST
WALLST
SANPEDROST
W 51st ST
W 52nd ST
W 52nd PL
W 53rd ST
W 54nd ST
W 55st ST
E 54th ST
E 52nd ST
E 51st ST
SANPEDROST
E 55th ST
AVALONBLVD
TOWNEAVE
Main Street Elementary
Food for Less
South Los Angeles Wetlands Park
South Park
Central Regional
High School #16
Alley Retrofit TIER 1: LID Demonstration Projects
lights, art, entrance features, traffic calming elements
vines, decorative / permeable paving, directional signage
Alley Retrofit TIER 2
Lights, signs, and vines
Existing Open Space
Commercial
School
Church
Residence
Proposed Enhanced Crosswalks
Priority Level for Pedestrian Enhancements
Levels based upon existing pedestrian usage, existing safety features,
proximity to schools, and traffic speeds
Existing Enhanced Crosswalks
1
Figure 37: Priortization of streetscape improvements

A Summary of Stormwater BMPs
The inclusion of robust stormwater BMPs in the Avalon Project design is
in part due to the City of Los Angeles’ expanded interest in stormwater
management over the lifetime of the project.127
This interest further increased
after a Supreme Court ruling on Los Angeles’ stormwater pollution and new
regional projections for climate change and reduced California water supply.128
The most visible stormwater BMP to be implemented consists of the removal
and replacement of impervious asphalt with light-colored, high albedo
permeable pavers and concrete (see Figure 38). The permeable interlocking
pavement system will collect stormwater runoff via a four-foot-deep,
subsurface infiltration trench, providing temporary storage prior to infiltration
into the soil below. Any stormwater draining from the block not otherwise
captured in the permeable paving, as well as water captured through catch
basins connecting to intersecting streets, will guide flows to dry wells. Dry
wells consist of subsurface chambers to capture, provide inline filtration
and infiltrate runoff from accumulated stormwater. They are a cost-effective
strategy to provide maximum capture and storage volume in a limited space.129
By the time the Avalon Green Alley Network Project is built out, the retrofitted
green alleys will minimally capture and infiltrate over 76,000 gallons of
stormwater each time it rains, which represents the first flush (first 3/4-inches)
or most polluted runoff for each rain event. Roughly speaking, up to two million
gallons of stormwater could be captured and infiltrated each year, based on an
average annual rainfall of 12 inches for the Los Angeles area.
Combined with the planting areas, these BMPs can help reduce pressure on
the existing storm drain system, clear alleys of stagnant wet spots and foul
odors, replenishing groundwater stores through infiltration, thus improving
water quality to downstream receiving waters such as the Los Angeles River
and coastal areas.130
Water not captured in permeable paving or infiltrated in
dry wells will help water trees and vines planted along the side of alleys (see
Figures 39 and 40).
Figure 38: Conceptual rendering of the Avalon Project’s permeable paving and catch basins

Figure 40: Construction details of the vine plantings
Figure 39: Conceptual rendering of vine plantings

Next Steps
The following planned steps are not yet implemented and thus the details
could be subject to change. Nevertheless, these steps are included in this
report because they are integral to creating an impactful and comprehensive
green alley project.
4. Construction and Implementation Steps
Construction for the Avalon Project begins in early 2015 and will be
implemented in three phases due to the nature of funding through multiple
grant sources.
As the City’s lead partner, The Trust for Public Land hired several private sub-
contractors for the project’s design, construction and engineering. A general
contractor will complete the construction under private contract. While the
Avalon Project has three construction phases, it is important to note that other
green alley project or program’s construction phase can be implemented in
a single phase. The following elaborates on the elements included in each
construction phase:
Phase 1: Avalon Green Alley South.131
Phase 1 includes construction
of the TIER 1 L-shaped alley in the southwestern corner of the network,
located between W 53rd street and W 54th street and Main Street and San
Pedro Street. Phase 1 involves the construction of three BMPs to capture and
infiltrate runoff from the surrounding block and intersecting streets via catch
basin intercepts; a drywell system; over 2,200 SF of interlocking permeable
pavers overlying an infiltration trench and; vines and fruit trees in planters.
• Avalon South’s Total Stormwater Volume Managed (per 0.75” rainfall) =
47,771 gallons (or 6,386 cubic feet)
• Drainage Area = 4.44 acres
Phase 2 and 3: Avalon Green Alley North.132
Phase 2 includes
construction of the pedestrian-only segment of the TIER 1 T-shaped alley in
the northeastern corner of the network, located between E 51st street and E
52nd street and Avalon Blvd and Towne Avenue, and directly adjacent to the
Examples of Integrated Community Outreach during the
Design and Permitting Phase
The community was very involved in project design. Through offering
suitable choices that were driven by permitting considerations, The Trust
for Public Land was able to receive community design input. Residents
informed the process by responding to different images of green alleys
and deciding if they liked certain elements through:
• Participatory design feedback in a 10-minute interview format.
• Attending free neighborhood-wide events held by The Trust for Public
Land and partners that included Christmas posadas (potlucks), end-of-
school BBQs and Earth Day Tree-Planting, and potentially becoming
interested and invested in the project.
• Joining the Avalon Green Team (which expanded at this time from
seven to 20 members).

Examples of Integrated Community Outreach during
the Construction and Implementation Phase
Community members will continue to be involved in the construction
and implementation phase including, for example creating poetry that
will be included in the alleys. The Avalon Green Team will be part of tree
planting and clean up events that will be held throughout the different
construction phases. Additional outreach efforts that The Trust for Public
Land plans include:
• Holding community information meetings during construction.
• Facilitating the participatory process for poetry that will be added in the
alleys.
• Organizing the alley grand-opening event.
Maya Angelou Community High School. Phase 3 involves the construction
of three BMPs to capture and infiltrate runoff from the surrounding block and
intersecting streets via a catch basin intercepts; a drywell system; over 800
SF of interlocking permeable pavers overlying an infiltration trench and; vines
and fruit trees in planters.
• Avalon North Total Stormwater Volume Managed (per 0.75” rainfall) = 29,002
gallons (or 3,877 cubic feet)
• Drainage Area = 2.89 acres
During Phases 1 and 2: the Avalon Green Alley Green Team and the Los
Angeles Conservation Corps will participate in community planting days to
plant nearly 150 street trees throughout the green alley network (See Figure
44).
Figure 41: Community residents participating in a tree care workshop

5. Maintenance and Stewardship Steps
The maintenance plan involves stewardship by the various agency
stakeholders and perhaps most importantly, community stakeholders.
The overall, long-term care of the green alleys is anticipated to be a combined
city and community-led endeavor. In order to facilitate and promote this
hybrid stewardship and maintenance regime, community outreach is tightly
coordinated with maintenance requirements. Ultimately, The Trust for
Public Land seeks to join neighborhood safety, greening and events with
maintenance. Regular use of the alleys by residents during the day and night
can promote their integration into daily life activities, as well as help deter
vandalism and reduce illegal activity.
Multi-agency collaboration and community support will help to maintain the
improvements over time. Accordingly, the Memorandum of Understanding
with BOS WPD places the bureau as responsible for the stormwater BMPs
and green infrastructure maintenance (grant funding obligates the City for 20
years minimum.133
Additionally, adjacent local schools have informally agreed
to support the project with maintenance through the schools’ service-learning
and community service activities.134
As an example, the partnership with the
neighboring school, Maya Angelou High School, has led to a multi-year plan
and a letter of understanding of their commitment to engage students and
provide spaces for various community meetings. The objective is to work with
the school with adjacent schoolteachers to integrate green alley maintenance
and stewardship into the students’ curriculum, daily schedules and school
events over time.
Maintenance will also involve Los Angeles Conservation Corps and the
non-profit organization Coalition for Responsible Community Development
(CRCD), which often helps the Bureau of Sanitation and other city agencies
in graffiti and trash removal, as well as mitigating deterioration by the request
of residents (see Figure 41). Vegetation maintenance is planned to be the
responsibility of volunteer gardening organizations, yet identified, who will
mentor and assist the Avalon Green Alley Green Team in pruning, watering
and care of the fruit trees and drought-tolerant plants (see Figure 42). In
most circumstances, the Bureau of Sanitation and Street Services maintain
alleys in the City of Los Angeles and beyond. However, the Avalon Project is
unique in that only the maintenance and operations of the project’s stormwater
components will be provided by the Bureau of Sanitation. The BOS WPD will
provide long-term maintenance and operations of the stormwater BMPs as
part of their regular wastewater conveyance and sanitation oversight.135
Figure 42: Community residents and project partners removing trash from South Park
neighborhood’s alleys

Examples of Integrated Community Outreach:
Maintenance and Stewardship
Through sharing the multi-benefits of green alleys and facilitating active
community participation throughout the development steps, The Trust for
Public Land has created a framework to guide the community with long-
term stewardship of the green alleys. With community members already
engaged, maintenance and stewardship are planned to coincide to
support and care for the green alleys. Examples of community outreach
at this step are:
• Maintenance provided by Maya Angelou High School through the
integration of standards-based content about green alleys into their
curriculum.
• Provision of training to the Avalon Green Alley Green Team, a group
that meets monthly in support of the project, to prepare them as
green alley stewards: tree planting and tree maintenance, community
education on bulky item pickup, event organizing (see Figure 43).
• Facilitating an increase in participation and stewardship through Avalon
Green Alley Days of Service and other events approximately two to three
times per year in the alleys.
Figure 43: Members of the Avalon Green Alley Team maintaining alleys in the Avalon Project’s site area

6. Monitoring and Evaluation Steps
Monitoring and evaluation is crucial for quantifying the effects of the
improvements of the Avalon Project and determining its overall success.
Data gained from these steps can help to promote further green alley
development.
The Trust for Public Land and the Council for Watershed Health (CWH) will
conduct pre- and post- implementation evaluation and monitoring for the
purposes of quantifying green alley benefits. These steps are expected to help
provide measurable outcomes and replicable solutions for the implementation
of stormwater infiltration in other densely developed neighborhoods across
Los Angeles. The CWH will provide an analysis based on monitoring the
stormwater infiltration components and collecting water samples. The CWH
will also analyze the effects of the proposed BMPs on water quality and
water supply as well as document the operations and maintenance needs
of the BMPs.136
Monitoring and Evaluation is planned for six months prior to
construction and 12 months after construction completion.
Monitoring and evaluation plans also include measuring social and
educational impacts, public health improvements, greenhouse gas reduction,
and increased biological diversity through the implementation of monitoring
equipment, neighborhood surveys and interviews with residents and
students.137
The Trust for Public Land plans to survey the community during
these evaluation periods to ask questions, like those seen in the sidebar, that
help to quantify the changes created by the implementation of the project.
Integrated Community Outreach: Monitoring and
Evaluation
The community outreach during the Monitoring and Evaluation steps
will revolve around interviewing residents through pre- and post-
implementation evaluation. One of the planned methods of collecting
information from residents includes surveys to present questions in an
attempt to measure the social, educational, economic, public health and
environmental improvements. Examples of planned survey questions
about alley use and quality include the following:138
Generally, how often do you use the alleys in your
neighborhood? (Check one)
o Daily
o A few times per week
o Once per week/a few times per month
o Monthly
o A few times per year
o Never
Are there specific concerns you have about the alleys in your
neighborhood or reasons you do not use them? (Check all
that apply)
o Desired features are not available
o Safety concerns
o Maintenance issues
o Traffic (driving cars or parking)
o Other:

Thinking Big: Going Beyond the Avalon Green Alley
Network Demonstration Project
There is a growing recognition that green alley projects and programs can
have multi-benefits in cities. Alleys in Los Angeles are extensive and ripe
for investment (see Figure 44). The South Los Angeles Green Alley Master
Plan has the potential to scale up the Avalon Project to other parts of South
Los Angeles. The plan focuses on a 17 square mile study area in South Los
Angeles, which is framed by the 10 freeway to the north, Florence Avenue to
the south, Alameda Street to the east and Western Avenue to the west, is one
of the most underserved and economically challenged areas of the city.The
plan has the following goals:139
1) Extend the Avalon Green Alley Network Demonstration Project;
2) Promote infill development;
3) Improve community walkability (thereby reducing Vehicle Miles Traveled);
4) Develop new attractive spaces for outdoor exercise and;
5) Promote multi-benefit infrastructure improvements with a focus on
stormwater capture and infiltration
The main intention of the South Los Angeles Green Alley Master Plan is to
formalize the green alley process and create a resource to guide the City in
future green infrastructure projects. Through the partnership between The
Trust for Public Land and the CRA/LA, along with other City agencies and
local schools, a “Sustainable Communities Planning and Incentives Grant”
was awarded to CRA/LA to create the Plan. With funds awarded from the
grant in 2010, The Trust for Public Land and the CRA/LA conducted precedent
studies and identified which alley segments had the greatest potential to fulfill
the Plan’s diverse goals. Currently, the Trust for Public Land is responsible for
project management and administration as well as overseeing outreach and
completing initial design concepts for new networks.140
Throughout 2014, The
Trust for Public Land gathered community input through approximately 1,000
surveys collected from residents in South Los Angeles related to the alleys.
The completed plan will provide a clear vision with detailed implementation
steps for phasing and funding alley networks in the study area. With the re-
establishment of the Bureau of Sanitation WPD as the lead City agency since
the CRA/LA’s dissolution in 2012, the Master Plan is slated to be completed by
June 2015.
As many other cities and stakeholders continue to develop green alley projects
and programs, it is important to reflect upon successful and noteworthy
strategies for their implementation. Chapter 4 is designed to relay unique
strategies and resources for green alley development from the Avalon Green
Alley Network Demonstration Project and the various project and program
examples featured in this report.
Figure 44: Existing conditions of alleys in South Los Angeles

Endnotes
95
“State of California Urban Greening Grant Program Proposal.” The Trust for
Public Land. 2011
96
“Green Infrastructure for the Avalon Green Alley Demonstration Project.” The
97
Ibid
98
Public Land. 2011
99 Combined Report for CF 05-0752 Alternative Street Surfacing Materials;
Green Streets; CF 08-0102 Green Alleys. October 15, 2008
100
2009. California Water Board. Web. 6 Aug. 2014.
101
Ibid; South Los Angeles Green Alleys Master Plan Grant Application.
August, 2010
102
Los Angeles County Public Health, August 2006 and 2006
103
Ibid.
104
Combined Report for CF 05-0752 Alternative Street Surfacing Materials;
105
State of California Urban Greening Grant Program Proposal.” The Trust for
Public Land. 2011.
106
Ballock, Laura. Project Manager for the Parks for People program for The
Trust for Public Land. In-person interview. 4 Sept. 2014.
107
Rainwater Harvesting Program: Green Street & Green Alleys Design
Guidelines.” 1st edition. City of Los Angeles in partnership with Sanitation
Department of Public Works and Watershed Protection Division. September 4,
2009.
108
Title II of the ADA requires state and local governments to make pedestrian
crossings accessible to people with disabilities by providing curb ramps.that
meet specific standards for width, slope, cross slope, placement, and other
features (http://www.ada.gov/pcatoolkit/chap6toolkit.htm)
109
“Rainwater Harvesting Program: Green Street & Green Alleys Design
Guidelines.” 1st edition. City of Los Angeles in partnership with Sanitation
Department of Public Works and Watershed Protection Division. September 4,
2009.
110
Combined Report for CF 05-0752 Alternative Street Surfacing Materials;
111
Ibid.
112
113
Ibid.
114
State of California Water Resources Control Board Grant Program
115
Public Land. 2011
116
A team of experts from the city of Los Angeles’ Departments of Planning
and Public Works
117
Comprised of members from the Board of Public Works; Bureau of
Sanitation; CRA/LA; Department of Planning; and USC Center Sustainability
118
Public Land. 2011
119
“Funding Sources for the Avalon Green Alley Demonstration Project.” The
120
121
Ibid.; California Codes (shc:11000-11011).” CA Codes (shc:11000-11011).
N.p., n.d. Web. 21 Jan. 2015.
122
123
Public Land. 2011
124
Ibid.
125
“Avalon Green Alley Network Pedestrian Improvements Report.” The Trust
for Public Land. 2014
126
127
Ibid.
128
Ibid.
129
Ibid.
130

Public Land. 2011
131
“Green Infrastructure for the Avalon Green Alley Demonstration Project.”
The Trust for Public Land. 2014.
132
Ibid.
133
Ibid.
134
135
“State of California Water Resources Control Board Grant Program
136
Ibid.
137
Ibid.
138
“Draft Survey Questions for the Avalon Green Alley Network Demonstration
Project.” The Trust for Public Land. 2014
139
South Los Angeles Green Alleys Master Plan Grant Application. August,
2010
140
“State of California Water Resources Control Board Grant Program
Chapter page image credit: The Trust for Public Land

chapter 4 lessons learned from the avalon green
alley network demonstration project

Chapter 4. Lessons Learned68
Introduction
While the Avalon Project will not be fully constructed before the completion
of this report, there are many important lessons that can be gained from its
past and current developmental steps. The purpose of Chapter 4 is to present
key lessons learned and strategies that can be transferable for future projects
to transform alleys and other public right-of-way spaces. These lessons and
strategies are organized within the Avalon Project’s three main development
steps introduced in Chapter 3:
1) Laying the Foundation
2) Partnerships and Funding
3) Design and Permitting
While most of the lessons and strategies are gleaned from the Avalon Project,
this chapter also includes best practices from other project and program
examples, as first introduced in Chapter 2. Chapter 4 does not contain a
comprehensive list of considerations but rather noteworthy examples and
strategies.

69Chapter 4. Lessons Learned
1) Laying the Foundation
• Do your research. Research and data can help spur overall interest in
transforming alleys, which is the case for Los Angeles. Here, university-driven
research and design efforts helped initiate collaborations including the City’s
Green Alley Sub-committee and subsequent actions that helped pave the
way for the Avalon Green Alley Network. Additionally, initial research identified
South Los Angeles as a park-poor neighborhood, which shaped the idea
to transform a network of alleys into green open spaces for community and
recreational purposes.
• Know the site. Site-specific studies can be an important next step. The
Trust for Public Land conducted feasibility studies to assess current physical
conditions of local alleys and identify which ones might be appropriate as part
of the project network site.
• Develop objectives that align with city goals. Aligning the design
of a green alley project with city guidelines and standards is clearly important
for city approval but in addition, alignment with city goals and programs can
contribute to obtaining funding and other important types of project support. In
the early stages of development, The Trust for Public Land initiated multiple
coordination meetings with several Los Angeles City departments to establish
municipal support and to align the project with Citywide green infrastructure
development. For example, the Avalon Project’s stormwater management
features were designed to help address the City of Los Angeles’ Total
Maximum Daily Load (TMDL) compliance for municipal stormwater programs
with the Environmental Protection Agency for the Los Angeles River.
• Lead activities and events to encourage residents to become
long-term stakeholders. A group of stakeholders that is part of the design
and development process can also be part of the long-term maintenance
plan. Community members involved in these early stages of the project will
also have a role in the maintenance and long-term care of the alley network.
For example, Alley Days of Service in the Avalon neighborhood will continue
to involve alley clean up, graffiti abatement and community building. Other
events, such as the Christmastime posada (potluck) and school events, as
seen in Figure 46, have helped to create a social environment within the alley
and ultimately increase alley usage. By integrating activities and events with
maintenance, lead entities can encourage fun community participation.

Figure 46: Christmastime posada (potluck)

2) Partnerships and Funding
Partnerships
• Use the power of people. Most often both private and public partnership
and investment are needed to implement a successful project. Yet low cost
completely grassroots projects are possible. The alley reclamation efforts in
the East Los Angeles neighborhood of Boyle Heights exemplifies this strategy
(see page 28 for details). Here residents have transformed their alleys into
community assets, which helps create residential ownership of alleys and
facilitates long-term care (see Figure 47). Along with the residents of Boyle
Heights, Union de Vecinos, a neighborhood-based group that is run by
committees of residents, design and construct alley improvements throughout
the community. Green LA, a group of professional landscape architects and
planners who work to transform Los Angeles streets into sustainable Complete
Streets,also collaborate with Boyle Heights high school students on ensuring
that the alleys serve as a safe route to school and other community
amenities. 141
• Partner with local and established community entities. There
can be challenges when developing green alley projects in residential areas
without previous or successful models for neighborhood improvements. Issues
of neighborhood instability, such as areas with high rental turnover rates, can
also affect long-term investment in the neighborhood. A model for overcoming
this barrier is to partner with local established community entities, such as
neighborhood organizations and schools. For instance, The Trust for Public
Land has partnered with the neighborhood high school. Students are serving
as project ambassadors and stewards, educating their fellow students and
neighbors about the benefits of green alleys through the integration of the
Avalon Project into curriculum and daily schedules. These students are also
already involved in maintenance of the alleys as green community spaces.

Figure 47: Boyle Heights resident sweeping a revtialized green alley
Image Credit: Boyle Heights Beat

• Transform local stakeholders into an established alley support
team. The Trust for Public Land built community partners within the vicinity
of the Avalon Green Alley Network Demonstration project because of the lack
of existing community organizations. With TreePeople as a partner, The Trust
for Public Land helped to transform the core group of stakeholders within the
community into the Avalon Green Alley Team. Residents who come to five
events or meetings an Avalon Green Alley Team receive a t-shirt, pictured in
Figure 48, as recognition for their support and efforts. The Trust for Public
Land has found that the simple element of a t-shirt has helped to form a
movement within the community; Green Team members have a sense of
identity and the beginnings of potential stewardship for future green alleys.
• Partner with municipal officials and departments. Finding a
“local champion who invites collaboration and expanded ownership142
”
can be a challenging step in the green alley development process. Before
planning for and implementing green alleys, it is important to think about
city leadership. Make sure to talk to local elected officials and be prepared
to succinctly explain the benefits that your proposal can bring to their
constituents. It is important to think about what is already happening in city
or county departments and their programs that could can integrate alleys
into the conversation. The City of Chicago’s Green Alley Program and the
City of Austin’s Green Alley Initiative demonstrate that green alleys can be
institutionalized into city departments, such as public works, transportation and
sustainability bureaus.
• Specifically involve the local police force. The local police force
in South Los Angeles, the Los Angeles Police Department (LAPD) Newton
Division, expressed initial skepticism towards the Avalon Project. However,
by taking a participatory and educational approach to conveying the current
uses and potential benefits of greening the alleys, the LAPD Newton Division
became one of Avalon Project’s early key supporters that helped the effort to
gain credibility(see Figure 49).143

Figure 48: Avalon Green Alley Team t-shirt

Figure 49: Community residents and project partners connecting with local police force

• Pilot a project and create visual tools to explain program or
project benefits to potential partners. By starting out with a few
demonstrations of a project idea, rather than trying to create a citywide
standard from scratch, Janet Attarian from the Chicago Department of
Transportation (CDOT) found that stakeholder and city officials’ concerns
related to new process and non-standard materials were alleviated.144
CDOT created a demonstration project by re-adapting the normal street
reconstruction process and identifying it as a pilot project. After demonstrating
a physical example of a green alley, the City created the most well-known
example of promotional green alley materials: “The Chicago Green Alley
Handbook,” as seen in Figure 50.The Handbook is designed to help explain
green infrastructure design through visuals and assisted in gaining program
support.145
It was distributed at public meetings and citywide “green events” in
the hopes that residents understand, adopt and request the green alleys.
Figure 50: The City of Chicago’s Green Alley Handbook
Image Credit: The City of Chicago

Funding
• Partner with local businesses, business improvement districts
or property owner alliances for support and funding. Green
alleys can have economic benefits, including attracting pedestrian traffic,
encouraging commercial activities and potentially increasing property values.
If green alley development is framed as an economic development project,
the effort can potentially be supported, funded and operated by surrounding
commercial entities. The East Cahuenga Alley Revitalization Project (EaCa
Alley), (see page 24 for further detail), is a commercial green alley with
support and involvement from the Hollywood Property Owners Alliance
(HPOA), the Hollywood Entertainment District and the Business Improvement
District (BID) (see Figure 51).
• Develop a tiered system for improvements and create an
achievable budget. While it is possible to obtain funding for an entire green
alley project from a single source, if a project or program is multi-faceted,
it may be necessary to develop a multi-faceted funding strategy. The Trust
for Public Land developed a tiered system for design features, knowing that
every alley segment could not receive the same level of improvements, thus
prioritizing resources within a limited but achievable budget. For example,
while TIER 1 alleys will have asphalt pavement replaced with permeable
materials to reduce stormwater runoff as well as planted vegetation and
espaliered fruit trees accented with public art, TIER 2 alleys will only be
cleaned up and beautified with vines and artwork. The Trust for Public Land
also plans to construct the green alleys in three difference phases because
grant funding came in at different times for different components of the larger
project. Funding sources includes a mix of local, state and federal grants as
well as foundation grants.
• Municipal-led efforts will want to engage local residents through
localized funding. Distributing funds to small, manageable geographies
can enable customized, resident-driven green alley development. Examples of
this funding strategy can be seen in the City of Chicago’s allocation of capital
funds to its 50 wards, or neighborhoods. Residents within the wards vote on
a menu of options for local improvements, including green alleys. Through
developing and implementing green alleys in neighborhoods or districts
in manners that encourage participation and design feedback, community
members can also take on green alley stewardship.
Figure 51: Grand opening of the EaCa Alley in Hollywood with city officials and project partners
Image Credit: The Beverly Press

• Medium Cost: Aboveground path lights traditionally
used to illuminate gardens and walkways can also bring a soft light to
alleyways. These lights can be incorporated into planters or landscaped strips.
• Higher Cost: Dark sky compliant
lighting is an example of energy efficient light fixtures that are specially
designed to focus the illumination toward the ground and minimizes light
pollution.148
The City of Chicago’s Green Alley Program includes dark sky
compliant lighting, which uses a white light source that also conserves energy
(see Figure 53).149
3) Design and Permitting
Lighting Features
Public safety is of paramount consideration for all new and existing alleys.
Lighting is one essential design feature that can help create a feeling of public
safety in alleys.146
Lighting features provide users with a greater sense of
safety and walkability by increasing visibility within the alley and to adjacent
streets and sidewalks.147
The following outlines three lighting strategies
arranged from low to high cost:
• Low Cost: An example of an inexpensive, Do-it-Yourself (DIY) way to
bring light to alleys is through installing strings or lattices of overhead lights
or lanterns throughout the corridor. In the City of Seattle, for example, events
as part of the Alley Network Project frequently use strings of lights throughout
the alleys to attract users and provide a festive, safe public space (See Figure
52). The Trust for Public Land’s Avalon Project will also include DIY lighting
throughout the green alley network in the form of solar lights.
Figure 53: Graphic of dark sky compliant alley light fixture
Image Credit: The City of Chicago
Figure 52: DIY string lighting in an alley in Seattle, Washington.
Image Credit: Mitch Reinitz

Figure 54: Alley closure, gained through permits from the City of Seattle, allow for events in
Seattle’s alleys
Image Credit: Kari Quaas
Other Safety Features
Whether an alley operates as a pedestrian-only space or as a shared street, it
is important to include design features that make the intended users and uses
of the alley clear.
• Low Cost: Orange cones and DIY signs communicating an alley’s
function can be a simple, low-cost safety measure. For example, when
Seattle’s Alley Network Project facilitates alley closures for events and
projects, the International Sustainability Institute and other organizers obtain
necessary alley closure permits and post signs, cones, and other visual
safety barricades to denote alley closure to vehicle access (see Figure 54).
• Medium Cost: Re-painting a faded crosswalk
or adding a painted pattern to a preexisting crosswalk can help create
safe connections among green alleys. The Trust for Public Land has
identified and prioritized crosswalks within the Avalon Project site so that
outside stakeholders can implement improvements in the future. Along
with crosswalk enhancements, The Trust for Public Land recommends
implementing a suite of pedestrian enhancements to the Avalon Project and
its environs to help create safe, pedestrian and cyclist-friendly spaces.
• Higher Cost: Installing fixed or
removable bollards or signs outside of the alley can help to demarcate the
space and communicate the alley’s function. The Avalon Project incorporates
removable bollards for the purpose of added pedestrian safety as well as
extensive street tree planting.157

Sustainable Green Features
Green features can range from light vegetation to sophisticated stormwater
management infrastructure. Such sustainable green features can help
to create an inviting public space for people to walk, bike, play and build
community.
• Low Cost: Planters with native vegetation can support biodiversity,
reduce irrigation needs and provide aesthetic value to the project. Building
planters can be low-cost and simpler to maintain than full landscaping. Boyle
Heights’ residents built movable planters while also providing mechanisms for
blocking vehicle access to alleys during events (see Figures 55 and 56). The
Avalon Project is planting fruit-producing vines to add greenery and provide
residents with fresh fruit without impeding vehicle access.
Figure 56: Movable planters add greenery and help block vehicle access to alley during alley events
Image Credit: Kris Fortin/LAStreetsblog
Figure 55: Resident-designed and constructed movable planter
Image Credit:: Kris Fortin/LAStreetsblog

Figure 57: Grasscrete image and diagram
Image Credit: Sustainable Paving Systems, LLC; The City of Los Angeles
• Medium Cost: Cobblestone, concrete blocks or
vegetated pavers (or “grasscrete”) can be installed in locations where the
soil allows for it. The hallmark of permeable paving materials and strategies
is that there are spaces in-between the blocks, which enables water to drain
to the ground instead of pool on impervious pavement (see Figure 57).
An important feature of permeable pavement materials is that they do not
impede vehicle access in the alley and also comply with the Americans with
Disability Act (ADA).150
The Avalon Project features permeable pavers due to
environmental benefits and the fact that all but one alley segment within the
network will remain open to vehicle access.
• Higher Cost: There are many
high-functioning green infrastructure elements that can be implemented in
green alleys. The Avalon Project features a suite of innovative elements,
such as light-colored, high albedo permeable pavers, and dry wells systems
with both inline pre-filtration and subsurface vaults in the form of catch
basins to remove trash, sediment, hydrocarbons, and other debris.151
Green
infrastructure elements can be designed to clear alleys of stagnant wet spots
and foul odors, replenish groundwater stores through infiltration, and improve
water quality of stormwater runoff.152

• Medium Cost: If green alleys are retrofitted with
new pavement or concrete, project facilitators can take the opportunity to
install stamped pavement. The stamp can have the name of the alley, the
date established, a vision statement or community-identified phrase and/or
project funders.154
The City of Chicago’s Green Alley Program incorporates
stamped pavement to signal the alley as a City-implemented green alley
(see Figure 59). Markers can also be incorporated into the wall of adjacent
buildings and created with low-to-medium-cost materials, as seen in one of
Seattle’s Alley Network Project’s events in Nord Alley in which living art was
displayed throughout the alley. For this event, a local artist constructed a
three-dimensional sign for Nord Alley that incorporated living plants.
• Higher Cost: Higher-cost green
alley markers can be signs posted on adjacent buildings, embedded mosaics
or sandblasted imagery or words on the pavement. The Avalon Project will
feature sandblasted patterns, text and signage embedded into the integral
color concrete pavement. This approach will provide a long-term art project
that the community is proud of.
Art and Community Identity Features
Green alley branding can help to denote public space, create community
ownership and unify multiple alley projects. Public art amenities such as
murals, art installations and playful street furniture can create a unique alley
identity, thus attracting pedestrians.
• Low Cost: A low-cost green alley marker can be a painted mural either
on a wall, fence, or the concrete alley floor. When developed and created
by the neighborhood, this feature can simultaneously build community
and beautify the alley. One of the many alley improvement projects led by
residents in the East Los Angeles neighborhood of Boyle Heights involved
repaving and painting the alley concrete blue and tan to represent the beach
and create a safe and playable surface.153
In the Elmer Paseo Stormwater
Improvement Project, residents collaborated with the non-profit Council for
Watershed Health to paint murals and interpretive signs on the Paseo’s walls
(see Figure 58).
Figure 58: A team of stakeholders and residents painting the walls of Elmer Paseo
Image Credit: Urban Applications
Figure 59: Stamped pavement decal in Chicago’s green alleys
Image Credit: Kate A. Ekman

• Higher Cost: Higher-cost
furnishing features can be fixed tables, chairs or benches, which help to
contribute to alleys as public spaces for community gathering. Often the
majority of the cost for higher-cost furnishing features is due to construction.
The Avalon Project features boulders as informal, customized and permanent
seating options in a network segment that is pedestrian-only.
Figure 60: Birthday party held in a Boyle Heights alley with the help of movable plastic chairs
Image Credit: Kris Fortin/LAStreetsblog
Figure 61: Lightweight and movable additional seating for restaurants adjacent to EaCa Alley
Image Credit: Sarah McPherson- Besley, Hollywood Business Improvement District
Furnishing Features
Adding furnishing features to green alleys promotes the use of alleys as
functional public spaces.
• Low Cost: Low-cost street furniture, such as folding chairs, plastic
tables and milk crates can create simple, community gathering places in the
alley. Boyle Heights residents often bring folding chairs to the parties and
potlucks they hold in their alleys, which function as a shared backyard and
public space (see Figure 60).
• Medium Cost: Adding public street furniture, in the
form of movable tables, chairs or benches can provide adjacent restaurant
and cafe owners with opportunities for additional seating for their businesses.
Commonly used public space furniture pieces are metallic, European cafe-
style tables and chairs because they are light, durable and simple to clean,as
seen in Hollywood’s EaCa Alley in Figure 61.155

Permitting
• Design a temporary, pilot or demonstration project. Obtaining
city permits is among the most cited challenges in project implementation.
Building in the public right-of-way, like alleyways, involves specific processes
and designated city departments. Standardization within public right-of-way
projects makes it challenging for stakeholders outside of city departments
to instigate and participate in improvement efforts. First approaching your
green alley efforts as a pilot or temporary demonstration can help overcome
concerns among city departments and ultimately streamline permitting and
institutionalize a green alley program. The Avalon Project took this approach.
• Build the process to develop green alleys if there isn’t one
already. Developing green alleys is not always a challenging undertaking
if there is a designated process in place. If there is a clear process for
implementing green alleys, project facilitators simply follow the steps. This was
not the case for The Trust for Public Land in the creation of the Avalon Project.
As a non-profit organization approaching the City about a first-of-its-kind
project with elements that deviate from the standard processes of public right-
of-way projects, The Trust for Public Land had to navigate and demonstrate
the approval process. The result of this process is a better understanding of
City regulations, processes and parameters for future green alley projects.
While the Avalon Project complies with permit requirements of various City
departments, The Trust for Public Land has found that there are significant
challenges that need addressing when obtaining permitting for wide-scale
replication across the city.
Figure 62: Reception for adjacent gallery in a Seattle, Washington alley
Image Credit: Mira Poling

• Permanently designate the green alley as a pedestrian mall.156
The Pedestrian Mall Law of 1960 within the California Constitution can be
applied to alley conversions into pedestrian-only spaces in California. A
pedestrian mall designation restricts vehicle access in a public street, which
includes an alley, and enables exclusive or primary pedestrian travel. In the
case of the East Cahuenga Alley Revitalization Project, those spearheading
the project discovered that the alley was designated as a pedestrian mall as a
result of the Pedestrian Mall Law of 1960. Therefore the gating implemented
by adjacent property owners and the associated restriction of pedestrian
access was illegal. The Los Angeles City Council’s re-designation of the alley
as a pedestrian mall allowed for alley closure to vehicles and the creation of
a pedestrian-friendly environment. The Avalon Project used this approach for
part of the network (see Figure 63).
• Obtain a temporary street closure or street use permit for alley
events and activities. Street use and street closure permits are required
for any work, occupation or community events within the public right-of-way.
This is type of permit is common across cities but the permits and associated
conditions may be housed in varying departments. Public works departments
are often the point of contact for obtaining such permits, however, departments
of transportation can also be the key entity.157
Permitting for temporary alley
events is used in Seattle’s Alley Network Project unique events and projects,
as seen in Figure 62. Interested parties must obtain a temporary street closure
and street use from the Seattle Department of Transportation.

Challenges, Solutions and
Opportunities
The following page offers a visual tool summarizing key lessons learned from
the Avalon Green Alley Network Demonstration Project. The objective is to
summarize current development to help support future green alley projects
overcome challenges. The Avalon Project turned challenges into opportunities,
as the following graphic illustrates.
Design Exploration
Figure 64: Design exploration for features of the Avalon Project

Alleys were places known for illegal dumping,
and gang activity.
Engage the Avalon Green Team to improve
alley cleanliness, post “No Dumping” signs
during cleaning events and partner with
Maya Angelou High School to paint murals
on alley network walls.
Cleaner and clearer alleys that promote local
stewardship prior to physical improvements.
The degraded state of the alleys made it difficult
for residents to look beyond existing conditions
and imagine green, improved alleys.
Organize and facilitate monthly platicas,
or informal talks or lectures, to provide
visuals of green alley possibilities and share
information on how residents can green
their alleys.
A community-shaped green alley network
with amenities and designs that reflect
residents’ preferences.
A lack of existing community organizations within
the area to collaborate with as project partners.
Directly engage with and empower local
residents. One way to reach youth is to
partner with local schools. Give residents
opportunities to shape the project and drive
efforts forward.
Resident-led Alley Days of Service cleaning
events evolved and expanded into the Avalon
Green Alley Team - a resident-driven group
of community members who lead cleaning
events and tree planting throughout the area.
Challenge Solution Opportunity
Incomplete parameters and criteria for an
innovative, first-of-its-kind residential green alley
network within the City of Los Angeles.
Develop and define parameters and criteria
through multiple coordination meetings with
various city departments.
A development process that can promote
green alley network replication throughout
the city of Los Angeles.

Difficulties-in planning for long-term maintenance
and ownership of the alleys.
Facilitate the development of a multi-
pronged community outreach and
engagement strategy that segues into
community-led maintenance, ownership and
stewardship of the alleys.
Community meetings and alley clean-
ups enable residents to learn how to
self-organize & implement greening and
sanitation in their neighborhood.
Funding for the comprehensive features of the
Avalon Green Alley Network were difficult to
acquire.
Create phases of construction that coincide
with available funding sources and develop
a tiered approach that prioritizes design
features.
Unique alley segments with different
features throughout the network.
Challenge Solution Opportunity

Conclusion
This report has shared the lessons learned about green alley projects and
programs from across North America to help expand green alleys in Los
Angeles and elsewhere. Cities across the U.S. are realizing the potential of
alleys as more than single-function spaces for vehicle use and increasingly
transforming alleyways into multi-purpose community assets. These efforts
come at an important time: open space is decreasing but innovative strategies
to re-imagine and re-adapt public space and infrastructure are emerging.
The green alley movement is among other efforts to re-imagine underutilized,
public rights-of-way spaces.
As the project and program examples have illustrated, green alley
development can take on a variety of forms, for a range of purposes.
Depending on objectives, green alleys have environmental, social, economic,
even multiple benefits. Collectively, the examples featured in this report
highlight the flexibility of alleys to provide multi-purpose places for people.
Designing and implementing a green alley requires a variety of considerations.
Depending on the surrounding land use, green alleys can range from public
green spaces, to extensions of cafes, or locations for community parties.
One of the most important prerequisites to green alley development is
community and municipal partnerships. Green alley efforts can be community
driven, business driven, city driven, or a combination of the three. Regardless,
developing community support is important to not only creating the green alley
but also ensuring longevity through local maintenance and monitoring.
The Avalon Green Alley Network Demonstration Project provides ideas and
lessons for green alley design, funding, partnership development, community
engagement and the navigation of a complex regulatory environment.
The Avalon Project is a case study in innovative alley use that enhances
environmental sustainability, economic vitality and social connectedness.
Despite a Los Angeles focus, many of the challenges and solutions presented
in this document can be transferable to other communities across the nation.
While this report is not intended to be a full green alley development toolkit, it
lays a foundation.
In Los Angeles, there is excitement and increasing support for green alleys.
The Avalon Project is an important demonstration that could be scaled up.
With 900 linear miles of alleys in Los Angeles, the potential is enormous for
providing residents with tangible local environmental, economic and social
benefits.
85
Figure 65: An alley in South Los Angeles with potential for transformation
Chapter 4. Lessons Learned

endnotes
141
“About Living Streets LA.” Living Streets LA. N.p., n.d. Web. 21 Jan. 2015.
142
“A Tale of Three Alleys: Integrating Green Infrastructure in Diverse
Neighborhoods.” American Landscape Architects Annual Meeting handout. 2013.
143
144
Arvidson, Adam. “Unseen Green.” Treeline: The Story of Your Land.
Landscape Architecture, September, 2008, 2008. Web. 21 Jan. 2015.
145
Ibid.
146
“Urban Street Design Guide.” Green Alley. National Association of City
Transportation Official, n.d. Web. 21 Jan. 2015.
147
Cassidy, Arly, Newell, Josh Newell, and Wolch, Jennifer. Transforming
Alleys into Green Infrastructure for Los Angeles. Rep. Los Angeles: Center for
Sustainable Cities, U of Southern California, 2008. Print
148
Ibid.
149 “
Green Alley Program Handbook: An Action Guide to Create a Greener,
Environmentally Sustainable Chicago.” The City of Chicago, Department of
Transportation. 2010
150
Trust for Public Land. In-person interview. 4 Sept. 2014
151 “
NOAA Federal Funding Opportunity Grant.” The Trust for Public Land Climate
Smart Cities Initiative: City of Los Angeles Green Alley Network Assessment
Project.
152
Trust for Public Land. In-person interview. 4 Sept. 2014
153
Cancian, Steve Rasmmusen. Telephone interview. 6 Sept. 2014
154
Burgos, Lila and Sarkisian,Tamar. East Cahuenga Alley Revitalization Project:
Best Practices for Creating a Pedestrian-Friendly Urban Alley. October 2013. Los
Angeles Sustainability Collaborative.
155
Ibid; Loukaitou-Sideris, Anastasia, Callahan, Colleen and Brozen, Madeline.
Reclaiming the Right of Way: A Toolkit for Creating and Implementing Parklets.
Rep. Los Angeles: UCLA Luskin School of Public Affairs, September 2012. Print.
156
Burgos, Lila and Sarkisian,Tamar. East Cahuenga Alley Revitalization Project:
Best Practices for Creating a Pedestrian-Friendly Urban Alley. October 2013. Los
Angeles Sustainability Collaborative.; California Codes (shc:11000-11011).” CA
Codes (shc:11000-11011). N.p., n.d. Web. 21 Jan. 2015.
157
Stenning, Liz and Somers, Nikki. “Alley Event Handbook.” The Alley Network
Project. 2012
Chapter page image credit: SALT Landscape Architects
Back cover page image credit: SALT Landscape Architects
86 Chapter 4. Lessons Learned

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