greening your corridor (s468)media2.planning.org/apa2012/presentations/s468_greening your...
TRANSCRIPT
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Adam Varat San Francisco Planning Department
Greening Your Corridor (S468)
1
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The San Francisco Planning
Department’s City Design Group
works to improve San Francisco’s
livability through concern for the
physical qualities of the city.
Our goal is to recognize the positive
qualities of San Francisco’s built
environment and its relationship with
the natural setting, and to create
and foster initiatives that build upon
these qualities in ways that
strengthen the city’s sense of place.
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www.sfbetterstreets.org
Today’s Presentation
1. Background
2. San Francisco’s Better Streets Plan
3. Institutionalizing Complete Streets in San Francisco
4. Case Study: Leland Avenue
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Background
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Private parcels: 57% of city land
Parks: 18% of city land
Streets: 25% of city land
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www.sfbetterstreets.org
“Complete Streets are
designed and operated to
enable safe access for all
users. Pedestrians,
bicyclists, motorists and
transit riders of all ages and
abilities must be able to
safely move along and
across a complete street.”
- National Complete Streets Coalition
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San Francisco Local Policies
Transit First Policy (SF City Charter) “Decisions regarding the use of limited public street and sidewalk space shall
encourage the use of public rights of way by pedestrians, bicyclists, and public
transit...”
Better Streets Policy (SF Admin Code) “... all City departments shall coordinate their various determinations regarding
the planning, design, and use of public rights-of-way...”
“Complete Streets” Policy (SF Public Works
Code) “...a project involving the planning, construction, reconstruction, or repaving of a
public right-of-way, such project shall include ... transit, pedestrian, and bicycle
improvements...”
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San Francisco’s Better Streets Plan
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Updating Auto-Oriented Design
Standards
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Emphasis on Streets for Public Life
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Integrating Ecology and Street Design
Pervious Paving Bioretention
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Link between Livable Streets and
Physical Activity
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A Significant Public Outreach
Program
5 rounds of outreach with over 100
community meetings
Monthly meetings with CAC over two
years
1,000 surveys received
Over 100 comments on the Draft Plan
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Street Types
Commercial Downtown
Throughway
Neighborhood
Residential Downtown
Throughway
Neighborhood
Other Industrial
Mixed-use
Special Parkway
Park edge
Boulevard
Ceremonial (Civic)
Small Alley
Shared public way
Paseo
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www.sfbetterstreets.org
Standard
Improvements
Crosswalks
Furnishings
Stormwater
Trees
Bulb-outs
Lighting
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www.sfbetterstreets.org
Case-by-Case
Additions
Chicane Raised
crosswalk
Traffic circle
Transit bulb-out Center median
Parking lane
planter
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Institutionalizing Complete Streets
in San Francisco
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Who builds Better Streets improvements
City-sponsored capital improvements
Private development
Community initiatives
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Controller’s Office Better Streets Plan Study:
“Responsibilities for streetscape project planning,
design, delivery and maintenance are shared by many
City departments”
“Internal City challenges are amplified for members of
the public interested in developing streetscape projects”
- Better Streets Plan: Recommendations for Improved Streetscape Project Planning,
Design, Review and Approval, Office of the Controller – City Services Auditor, January 19,
2010
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Controller’s Office Recommendations
Citywide (Inter-agency) Recommendations
# Recommendation
1 Create and institute a unified project design checklist
2 Increase the profile of design and cost (operations and
maintenance) considerations
3 Pilot formally-framed interdepartmental collaboration groups
(Capital and Design Review)
4 Consolidate meaningful streetscape planning and delivery
resources into single location
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Case Study: Leland Avenue
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Project Area
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Public Workshops
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END
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Dan Christian, PE
Tetra Tech
Retrofitting Streets and Corridors Session: Greening Your Corridor (S468)
Topic: Greening the Michigan Avenue Corridor
Virg Bernero, MayorVirg Bernero, Mayor
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Agenda
• Project Overview
• Background and Timeline
• Goals and Challenges
• Design
• How it Works
• Education
• Maintenance
• Cost
• Results
• Lessons Learned
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Project Overview
Beautify the corridor
Consist of: • New concrete sidewalk and accenting clay pavers • Curb bump-outs constructed at certain intersections • Rain gardens, utilized to capture the initial storm water
runoff • Crosswalk improvements • Informational and educational kiosks • Bus shelters • Site amenities such as pedestrian and vehicular
signage, benches, litter receptacles
The curb bump-outs created by the rain garden construction will also increase pedestrian safety
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Background & Timeline January 2004 – Mayoral Task Force Formed
Tasked with Michigan Avenue corridor improvements
July 2004 – Committee Recommendations Create gathering places Highlight pedestrian crosswalks “Green Up” the corridor Place kiosks and benches where appropriate
June 2005 – Commercial Business Meeting No objections . . . no comments . . .
Politics • City Council voted NO • Grass roots support, lots of education and
absent council member overturned vote
2006 – Design
2007 to 2008 – Construction
2010 to 2011 – Performance Monitoring
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Goals and Challenges Goals
• “Green Up”
• Beautification
• Stormwater Treatment
• Public Education
• Pedestrian Friendly
Challenges
• Public Perception
• Pedestrian safety
• Storefront access
• Existing utilities, landscaping and driveways
• Structural integrity of adjacent infrastructure
• Adverse plant growth conditions
• Soils (permeability, compaction longevity)
• Cost
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Design
Ultra-Urban
5-ft wide planter box style bioretention
30 bioretention gardens
7,631 square feet
4.1 acre tributary area
4 blocks, both sides
Adaptable to community needs
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Final Product
7
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How it Works
• Rainfall runoff from road and sidewalk directed to gutter
• Gutter flow enters garden through curb cuts
• Water soaks into garden soil, storage in soil, uptake by plants
• Underdrain prevents excessive groundwater
• When system reaches capacity, flow bypasses the gardens and continues to traditional drainage system
Primary flow Excess flow
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Education
• Business community
• Meetings
• Door-to-door
• Planting ceremony
• Interpretative signage
• Hands on science museum
• Tours
• Maintenance guides
• People on the street
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Maintenance City of Lansing
Master Gardeners
Adopt-A-Spot
Instruction manual
Volunteer
City staff
• Native plant expert
• Businesses - grabber
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Costs
Construction
• $2.5M overall corridor enhancement project
• Bioretention facilities
• ~ $1M
• $122/sf
Maintenance
• $15,000 to $35,000 (annual)
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Corridor
● Significant corridor greening
● Adaptable design
● Accessible to business
Plants
● Vigorous plant growth
● Plant health 90% good or better
Stormwater Runoff
● 75% decrease in discharge volume
Results
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Lessons Learned
• Large scale green infrastructure projects in ultra-urban areas are possible
• Clean water is the goal, stormwater is a critical piece of the puzzle
• Integrate stormwater improvements with other capital improvement projects
• Work with adjacent property owners • Use a multi-disciplinary team
planning, aesthetics, soils, plants, stormwater, maintenance, education, participation, community buy-in
• Think Outside the Pipe! • Don’t give up . . . educate, educate,
educate
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Wing Tam
Dept. of Public Works, City of Los Angeles
Greening Your Corridor (S468)
1
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Westside Park Rainwater
Irrigation Project
An exercise in sustainability
Presented by: Adam Coghill
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Before Construction
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Before Construction
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Before Construction
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Before Construction
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Before Construction
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Before Construction
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Storm Drain Culvert Running
Through Park
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Storm Drain Exposed
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Original Concept
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Plan View of Project
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Treatment Train
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EPIC Sub-Surface Irrigation
System Profile
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Capillary Action
•Delivers water directly
to root zones
•No contact between
contaminated water and
park patrons
•Potable water savings
•Water demand as little
as 20% of landscaping
using traditional irrigation
systems
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Bottom of EPIC System
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Bottom of EPIC System
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Bottom of EPIC System
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Cross-Section of Dry Creek
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Construction Details
Cost: $3.3 million
Duration: 10 months
California Proposition 50 Grant (Protecting
Coastal Water Quality): $2 million
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Finished Park
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Turf: Sub-Surface Irrigation
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Dry Creek
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Dry Creek and Turf
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Universally Accessible Playground
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Universally Accessible Play
Equipment
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Turf: Sub-Surface Irrigation
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Play Equipment
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Universally Accessible Playground
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Universally Accessible Play
Equipment
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Fitness Equipment
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Questions?