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7/25/2019 6-22-16 MASTER Boston Resiliency Planning.pdf
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Environmental Business Council of New England
Energy Environment Economy
EBC Ocean and Coastal Resources Program:
Resiliency Planning for theCity of Boston
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Payson Whitney
Chair, EBC Ocean & Coastal
Resources Committee
Vice President
ESS Group, Inc.
Environmental Business Council of New England
Energy Environment Economy
Welcome
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Varoujan Hagopian
Program Chair and Moderator
Senior Consultant, Waterfront and
Coastal Engineer, GEI Consultants
Environmental Business Council of New England
Energy Environment Economy
Introduction
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Carl Spector
Commissioner,Environment Department,
City of Boston
Environmental Business Council of New England
Energy Environment Economy
The Climate Ready Boston Initiative
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Environmental Business Council of New England
22 June 2016
CLIMATE
READY
BOSTON
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CLIMATE READY BOSTON COMPONENTS
Science-based
consensus re likelyranges for futurechange climateimpacts acrossmultiple risks forseveral future time periods (e.g., 2030s,
2060s/2070s, and2100).
Comprehensive
assessment of currentand potential futurerisks facing Boston’s physical assets andsystems, includingbuildings,infrastructure and
environmentalsystems.
Set of actions to
enhance Resilience inCritical ResilienceFocus Areas, whereResilience actions arenot currently beingtaken or planned andmultiple
vulnerabilities exist.
Report that offers
recommendations forexecution, potentiallyincluding fundingsources, incentives,legal/regulatorychanges, communityengagement, and
local/regionalcoordination.
ClimateConsensus
VulnerabilityAssessment
ResilienceInitiatives
ImplementationRoadmap
I. II. III. IV. ..
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7
City of Boston
P r o j e c t
L e a d e r
s h i p
P r o j e c
t
T e a m
Green RibbonCommission
UMass BostonClimate Consensus
HR&A AdvisorsProject Manager
ArcadisVulnerability Assessment
Boston ResearchAdvisory Group
Project Team
Climate Ready Boston Team
Outreach PartnersThe Boston HarborAssociation
Chief ResilienceOfficer
Imagine Boston2030
InfrastructureAdvisory Group
SasakiSocial
Vulnerability
InkhouseCommunications
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8
Project Context: Confluence of General Boston Planning Efforts
Housing
Cultural
Mobility
Climate
Preparedness
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THE NUMBER OF VERY HOT DAYS WILL INCREASE
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RAINFALL FROM STORMS WILL INCREASE
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RELATIVE SEA LEVEL IN BOSTON WILL RISE
11
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CLIMATE READY BOSTON
FLOOD EXTENT MAPS
(2030-2050)
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CLIMATE READY BOSTON
FLOOD EXTENT MAPS
(2060-2085)
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CLIMATE READY BOSTON
FLOOD EXTENT MAPS
(2070-2100)
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CITYWIDE FLOOD IMPACTS
1% AEP* 10% AEP* AVG. MONTHLY HIGH TIDE
*Annual Exceedance Probability
2,140
5,550
12,130
580
2,760
9,730
1,840
9" SLR 21" SLR 36" SLR
EXPOSED BUILDINGS
9,000
27,000
65,000
2,000
12,000
52,000
8,000
9" SLR 21" SLR 36" SLR
EXPOSED POPULATION
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RESILIENCE INITIATIVES PRINCIPLES
SUPPORT MULTIPLEBENEFITS WITH EACH
ACTIVITY
MAKE IMPROVEMENTS AS PARTOF NATURAL BUILDING CYCLES,AND ADDRESS MARKET FAILURES
INCORPORATE LOCALINVOLVEMENT IN DESIGNAND DECISION-MAKING
WORK IN LAYERS FORINDEPENDENTLY
EFFECTIVE SOLUTIONS
DEVELOP ADAPTIVE AND FLEXIBLE
STRATEGIES
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17
ProtectedShores
ResilientInfrastructure
AdaptedBuildings
Connected &PreparedCommunities
A Resilient Seaport District
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SociallyVulnerable
Groups
SouthBoston
Population
% of SouthBoston
Total Population 33,600
Older Adults (65+) 3,200 10%
Children (<5) 4,900 14%
People withDisabilities
3,000 9%
Low to No Income 8,200 24%
People of Color 7,100 21%
PREPARING SOCIALLY VULNERABLE POPULATIONSSouth Boston
Connected & PreparedCommunities
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Environmental Business Council of New England
22 June 2016
CLIMATE
READY
BOSTON
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Julie Wormser
Vice President for Policy and Planning,
Boston Harbor Now
Environmental Business Council of New England
Energy Environment Economy
An Uncertain Future: Adjusting
Environmental Regulations to Account
for a Changing Climate
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Institutionalizing Flood
Preparedness in Boston
Julie Wormser
VP Policy and Planning
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Boston Harbor Now is a new civicorganization formed through the mergerbetween The Boston Harbor Association andthe Boston Harbor Island Alliance.
Our Climate Preparedness Committee iscomprised of academic, agency, non-profitand private sector practitioners.
We examined Boston’s waterfront regulationsto propose improvements to institutionalizeflood preparedness.
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For the first time in human history, climacticconditions are beginning to change duringthe lifespan of a project.
Our current regulations assume staticenvironmental conditions.
We need to index regulations to climatechange so projects are ready throughout their
lifespan.
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Framingham, September 2015
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Fall River, March 2010
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Codifies FEMA flood maps through a BostonRedevelopment Authority zoning ordinance.
Restricts or bans building in places at risk offlood damage either to the structure itself or
its surroundings.
Meets requirements of the National FloodInsurance Program to “adopt and enforce
sound floodplain management regulationsand ordinances.”
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FEMA is prohibited by law from usingprojections; maps based on existing datafrom past events.
Most buildings last 60+ years or more. With
up to 3’ higher seas by 2070, structures notnow in the flood zone will be during theirlifespans.
Doesn’t apply to existing buildings notundergoing substantial construction, or tostate and federal projects.
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Calculate current and projected flood zonesusing better science, such as the BostonHarbor Flood Risk Model.
Require flood resilience for a buildings’ entire
design life, not just for current conditions.
Create a Flood Resilience Overlay District toencourage flood-adaptive design withoutrequiring variances.
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Administered by the Interagency GreenBuilding Committee (IGBC) as part of theArticle 80 process for large developments.
Requires completion of a Climate Change
Preparedness and Resiliency Checklist.
The checklist provides a framework forconsidering present and future climateconditions in project design, including sealevel rise.
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Unilever Corporate Headquarters,
Hamburg, Germany
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PwC Boston,
Seaport Blvd
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Developers are not required to take actions toprepare for specified future conditions.
Doesn’t apply to existing buildings notundergoing substantial construction, or to
state and federal projects.
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Use Climate Ready Boston projections for alldevelopment projects.
Require detailed climate preparedness in thesame way Chapter 37 already requires
building sustainability.
Develop performance-based designstandards to match sea level rise scenarios.
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The Building Code provides minimumrequirements for flood-resistant design andconstruction of applicable structures.
Lowest floors must be elevated one foot
above “Base Flood Elevation” in the FEMAflood zone; two feet above in areas exposedto wave action.
Limits what can be built below Base FloodElevation.
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Only applies to new construction orsubstantial repairs/improvements of existingstructures.
Cannot be used to address the resiliency of
existing buildings that do not needsubstantial improvements.
Little incentive to build to higher standardsthan the minimum required.
Doesn’t require adaptation over time asflooding increases.
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Petition the state for a Boston-specificbuilding code amendment for flood resistantconstruction in current/future flood zones.
Require flood proofing elevations to be based
on the flood conditions that are expected tobe present during the lifetime of a structure(can be phased in over time).
For existing buildings currently exposed toflood risks, require flood-resilient retrofittingover time.
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Administered by the Mass Department ofEnvironmental Protection, guarantees publicaccess to/enjoyment of the waterfront andprotects maritime industrial areas.
Requires that new buildings are designed andconstructed to incorporate some sea level riseduring the design life of the buildings.
Includes multi-parcel Municipal Harbor Plans
that can override Chapter 91 regulatoryrequirements to meet local planningobjectives.
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Allows sea level rise projections to be based onhistorical rates and does not define “design life”of structures. Even this provision is not typicallyapplied during the review process.
Based on sea level rise projections, filledtidelands will become flowed tidelands again,rendering Chapter 91 less applicable in thefuture than it is today.
Currently there are no incentives or mandates forprojects to include climate adaptation ormitigation.
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It may be possible to include neighborhood-wide flood resilient measures in MunicipalHarbor Plans without having to amendChapter 91 itself.
Mass DEP’s is currently revising Chapter 91;these revisions should incorporate climateresiliency standards into both site-specificprojects and into Municipal Harbor Plan
requirements.
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Mass Environmental Policy Act Wetlands Protection Act
FEMA Letters of Map Change
National Pollutant Discharge EliminationSystem
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We found four good opportunities toinstitutionalize flood preparedness onindividual properties.
Only Chapter 91 Municipal Harbor Plans
encouraged actions across properties. Once coastal flooding becomes chronic, we
will need such collective action to protect thecity as a whole, not just building-by-building
solutions. Get ready for another Big Dig during our
lifetimes.
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Julie Wormser [email protected] 617-223-5255
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Jerry Friedman
Senior Project Manager,HDR Engineering Inc.
Environmental Business Council of New England
Energy Environment Economy
Designing and Constructing a
Resilient Morrissey Boulevard
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DESIGNING AND CONSTRUCTING A
RESILIENT MORRISSEY BOULEVARD
EBC Ocean and Coastal Resource Program
Resiliency Planning for the City of BostonWednesday, June 22, 2016
Jerry Friedman, PE, ENV SP
Agenda
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Agenda
• Project Scope and Goals
• Stormwater and Flooding
Issues
• Design Criteria
• Inter-relation of resiliency
and other project goals
Design Team
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Civil & Structural Engineering; Drainage & Coastal Design
Stormwater & Flood Control Strategy; Green Infrastructure
Landscape Architecture & Urban Design
Transportation Analysis & Design
Environmental Permitting
Geotechnical & Geoenvironmental
Survey & Right-of-Way
Overall Project Management, Direction and Guidance
Design Team
Primary Project Goals
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• Stormwater and f lood ing : Provide
stormwater improvements and climateresiliency
• Transportat ion : Provide safe, convenient,
and inviting pedestrian and bicycle
accommodations, balanced with
appropriate vehicular accommodations
• Landsc ape & Urban Design : Enhance
parkway character and strengthenconnections to recreational facilities,
natural resource areas, and
neighborhoods
Primary Project Goals
Design Project Scope
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• Conceptual through final
design and construction
• Public involvement process
• Environmental permits
• Drainage, transportation, and
urban design upgrades
• Safety improvements
• New traffic signals and
roadway lighting
Design Project Scope
Potential Project
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Potential Project
Phasing
• Design is fullyfunded
• “Middle” segment is
most vulnerable
today and will be
prioritized first for
construction
• Construction of allsegments subject to
funding availability
Project Goal: Stormwater and Flooding
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Project Goal: Stormwater and Flooding
• Provide Stormwater Improvements and Climate Resiliency
Stormwater and Flooding
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Why does Morrissey Boulevard flood?
• Physical Characteristics Low elevation
Coastal exposure
Size, location, and condition of drainage infrastructure (catch
basins, pipes, outfalls)
• Flood Sources Precipitation falling directly on the roadway
Stormwater from upgradient areas (in pipes and on surface)
Coastal processes (tides/wind/waves/storm surge)
g
Stormwater and Flooding
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Why will it get worse?
• Sea Level Rise (SLR)
“New Normal” of higher tides restricts free flow of stormwater from
roadway to Boston Harbor
• More frequent and stronger coastal storms Higher water = further restrictions on flow through drainage system
Direct flooding due to wind and waves
• Increased rainfall intensity Can overwhelm the drainage system, even without coastal impacts
g
Stormwater and Flooding
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How much worse?
• Increasingly sophisticated modeling and studies have been
performed for the Boston area
Stormwater and Flooding
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How much worse?
Year 2070 – 10% Probability*
*There is a 1 in 10chance that sometime in
year 2070 the flood
depths shown on this
map will be reached or
exceeded
Morrissey Boulevard
H h ?
Stormwater and Flooding
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How much worse?
Year 2070 – 1% Probability*
*There is a 1 in 100
chance that sometime in
year 2070 the flood
depths shown on this
map will be reached or
exceeded
Morrissey Boulevard
Stormwater and Flooding
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…but Coastal Processes are only Part of the
Story for Morrissey…
• Increase in predicted high tides for 2070:
2.5 - 4 feet above today’s tides
Many segments of the roadway, and much of the
drainage system, will be below predicted water levels formuch of the daily tide cycle
• Increased rainfall intensity:
“Cornell” model for NY and New England Existing Morrissey roadway drainage (capture and
conveyance) is circa 1950’s and obsolete
Stormwater and Flooding
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Design Criteria
• 10-Year Storm (Cornell model)
• Sea Level Rise by Year 2065
• 100-Year Tidal Inundation
• Allow 3 events per year, in 2065,
where roadway may be
impassable for 1-hour or more
during forecast peak tides without
storm surge
Stormwater and Flooding
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Potential Adaptation Tools:
Roadway Elevation and/or Flood Walls
Existing
Roadway
Full
RoadwayElevation
Existing
Roadway
Partial
Roadway
Elevation
Stormwater and Flooding
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Potential Adaptation Tools:
Shoreline Protection
Source: Delewarestuary.org
“Hard”
Solutions
“Soft”
Solutions
Stormwater and Flooding
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Potential Adaptation Tools:
Green Infrastructure (GI)
GI tools such as biofiltration
and pervious surfaces can
both reduce total runoff and
improve water quality.
Stormwater and Flooding
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Potential Adaptation Tools:
Capacity and Conveyance
These tools can store water
in the system when tides are
too high to discharge and can
prevent ocean water from
backing up onto the roadway
Tide Gate at Drainage Outfall
Backflow Prevention Device at Drainage Outfall
Cutaway View of Temporary Underground
Stormwater Storage
Primary Project Goals
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• Stormw ater and f looding : Provide
stormwater improvements and climateresiliency
• Transportat ion : Provide safe, convenient,
and inviting pedestrian and bicycle
accommodations, balanced with
appropriate vehicular accommodations
• Landscape & Urban Design : Enhance
parkway character and strengthenconnections to recreational facilities,
natural resource areas, and
neighborhoods
y j
O p p o r t u n i
t i e s &
C o n s t r a i n t s
Transportation
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Bicycle and Pedestrian Goals
• Provide facilities along entire corridor
• Minimize conflicts between bicycles
and pedestrians and between bicycles,
pedestrians, and vehicles
• Integrate with surrounding
bicycle/pedestrian network
Landscape / Urban Design
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Green Space/Bicycle/Pedestrian Connections
City of Boston “Bike Network Plan”
Morrissey Blvd.
Corridor
Project Goals: Landscape and
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Project Goals: Landscape and
Urban Design
• Enhance parkway character and strengthen connections to
recreational facilities and natural resource areas
Landscape / Urban Design
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Parkway Character
One section of Morrissey Boulevard – Option to raise edges, but not
roadway. Blocks views from the Boulevard.
Landscape / Urban Design
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Parkway Character
One section of Morrissey Boulevard – Option to raise roadway and edges.
Allows views from the Boulevard and road edge plantings.
Landscape / Urban Design
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Neighborhood Connections and Character
Design must respond to
current adjacent conditions
and look for opportunities to
connect neighborhoods on
both sides of the Boulevard.
Landscape / Urban Design
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Neighborhood / Open Space Connections
Important open space connections, such as those at Malibu Beach, will
respond to future as well as current conditions.
In Summary…
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• A “typical” parkway
restoration project becomesmore exciting given the
resiliency challenges
• Need to balance both current
and potential future
conditions
• Design criteria and analysis
tools are all very dynamic
• Single agency project, but
many outside
actors/influences
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Questions?
Panel Discussion
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Environmental Business Council of New England
Energy Environment Economy
Panel Discussion
Moderator: Varoujan Hagopian,GEI Consultants
Panel Members:
• Jerry Friedman, HDR Engineering, Inc.
• Carl Spector, City of Boston
• Julie Wormser, Boston Harbor Now
EBC Ocean and Coastal Resources Program:
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E i t l B i C il f N E l d
Resiliency Planning for the
City of Boston