SNEAPA 2013 Friday f1 10_30_after the storm
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Transcript of SNEAPA 2013 Friday f1 10_30_after the storm
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Learning from St. Bernard Parish SNEAPA - After the Storm: The Planner’s Role for the Next One
Donald J. Poland, AICPDon Poland Consultingwww.donaldpoland.com
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Outside the Levee Wall
After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
What we Plan for - Risk Management and Emergency Planning•We calculate and try to measure risk and exposure to risk:
• Hazard x Exposure x Vulnerability = Risk
•We plan for emergency response:• Preparedness and Evacuation• First Response• Search and Rescue and Recovery
•We provide government aid and support in the aftermath for:• Loss• Clean-up• Planning• Redevelopment
•We DON’T plan for• After the disaster – What to do and how to do it?• How to redevelop – What areas should or should not be rebuilt? • Capacity and management – How do we manage recovery?• We don’t plan for the everyday – How do we manage the everydayness of recovery?
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After the Storm: St. Bernard Parish
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After the Storm: St. Bernard Parish
The Challenge of Planning for Recovery
•How do you tell people they can’t rebuild?
•How do you plan and do what is ‘right’ when there is an overwhelming rush to normalcy
• We must, we will rebuild!!!
•How do you manage government when every record, document, survey, map, and permit has been destroyed?
•What do you do when the community has infrastructure to support a population of 65,000 and you are now 35,000?
•How do you navigate and manage the red tap, strings, and conditions of Federal and State aid?
•When is recovery complete? How do we measure for our return to normalcy?
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After the Storm: St. Bernard Parish
Lessons I Have Learned
•Rush to normalcy out weighs rational thought and long term planning.
•The ‘little and simple things’ of everyday government is magnified and intensified—doing your job can become challenging?
•We need to plan for ‘after the disaster.’• What are our threats and what are the
potential impacts of those threats?• How might those threats impact us—
change our future? [Flood zones, Hurricanes, Tornados, etc.]
• What systems (policies, procedures, protocols) do we need to have in place to manage the outcomes of those threats?
• What are possible alternative futures and how do we plan for these futures?
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Southern New England American Planning Association
After the Storm: The Planner’s Role for the Next One
Thank You!
Don Poland Consulting
www.donaldpoland.com
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Michael Dietz, Ph.D.CT NEMO
University of Connecticut
SNEAPA Conference Panel10/18/13
It’s Not Just About Temperature: Stormwater
Management in a Changing Climate
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Precipitation Regime Changing
o Research shows higher annual totals, and more high-intensity events in the Northeast
Rhode Island-Spring 2010
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Annual precipitation in CT
Source: Miller, et al. 2003. Precipitation in Connecticut. Report No. 38. Institute of Water Resources, University of Connecticut.
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Sediment plume from Irene
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Storm Frequency Analysis100 year flood? 500 year storm?
oProbability of occurrence of a given precipitation event• Based on magnitude and duration of a rainfall event e.g., “the 100-year, 24 hour storm is 8.1 inches”
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Question
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Uses of storm frequency valueso Engineering design of culverts, storm drainage• TP-40 values (1961)
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Effects of Using Outdated TP-40 Values
o Due to changes in precipitation intensity and frequency, older return period estimates are inaccurate• This can lead to undersized stormwater
infrastructure
o Researchers at Cornell have updated these valueshttp://precip.eas.cornell.edu/
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Storrs, CT Precip. Values (24 hr)
RI TP-40(in)
Updated values (in)
1 2.5 2.67
5 4.0 3.95
10 4.5 4.66
25 5.5 5.79
50 6.0 6.84
100 7.0 8.07
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What Can You Do Now?
o Keep track of problem areas
o Digitize if possible
o Make sure that new infrastructure is sized properly
o Use Low Impact Development where possible
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LID tools
Bioretention/rain gardens
Permeable pavements
Vegetated roofs
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POST-DISASTER PLANNING
IN MILFORD, CT
After the Storm:THE PLANNER’S ROLE FOR THE NEXT ONE
Emmeline Harrigan, AICP, CFM Assistant City PlannerFloodplain ManagerMilford, CT
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New Haven
Year-Round Flooding Potential:Fall Hurricanes
Winter Nor’eastersSpring Storms/Up stream Melt
Summer Thunderstorms & Flash Floods
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MILFORD FLOOD FACTS
4,000 Flood zone properties
2,943 flood insurance policies in Milford
$2,935,266 premiums
$631,836,200 insurance in force
2,596 claims paid since 1978
$62,151,650 in closed paid losses
510 Repetitive Loss Properties
42 Severe Repetitive Loss Properties
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Storm Irene – August 28, 2011
540+ Structures Damaged
50 Substantially Damaged
$23M in insurance claims
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Storm Sandy – October 29, 2012
1,000 Structures Damaged – from basement heating systems to full structural collapse
200+ Substantially Damaged
Total $$ damages still unknown
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Long Term Recovery
From July 2012 to October 2013:
•New construction: 26
•IRENE repair (elevate): 2
•SANDY new: 3
•SANDY repair (elevate): 26
•Residential alteration (elevate): 1
Summary:
New construction is 29;
Elevate is 29
Only 25% of substantially damaged structures
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Step 1: Hazard Mitigation Planning
•Required if Community applies for any Hazard Mitigation Grant Program funds
•Every 5 years
•Milford’s “Update” increased from 30 pages to 144 pages with 100 pages of Appendices
•Extensive new FEMA guidelines for vulnerability assessments and potential property loss analysis
•Start early – approx. 2.5 years including public outreach and state and FEMA Region I review time
• HIRE A CONSULTANT!
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Vulnerability and Repetitive Loss
Identify Areas and Neighborhoods
Identify if Public
InfrastructureProjects Play a
Role
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Step 2: Be Prepared to Target Funding
Elevations (some reconstruction allowed): Hazard Mitigation Grant Program (FEMA) Severe Repetitive Loss (FEMA) Housing and Urban Development (HUD) Secretary of Interior/Historic Preservation Funds
Acquisitions (with an established local policy): Hazard Mitigation Grant Program (FEMA) National Oceanic and Atmospheric Administration (NOAA) National Resource Conservation Service (NRCS)
Public Mitigation Projects (culverts, drainage, etc.) Hazard Mitigation Grants (FEMA) US Army Corps of Engineers (USACE)
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Coastal Resiliency – Planning for the Future
Re-investment, Retreat or a Combination?
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Re-investment : Elevate & Reconstruct
Facts:Size: 480 SFAppraised Value:$155-160 KElevation Cost:
$65-70 KSite Grade: 3.5Tax Revenue:$2,800New FFE: 12+
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Milford Point/Cedar Beach
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New Neighborhoods/Different Quality of Life
Demographic shifts due to increased costs
Urban aesthetic – no more quaint beach cottages
Increased height= limited access/ability to age in place
Check height limits with local FD.
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Focused Retreat/Open Space Purchases
“Houses in the Swamp” Beneficial Natural Function/More Flood Storage Protecting Tidal Marshlands and Habitat Lessen Infrastructure Expansion Burden Prevent Future Jurisdiction/Ownership Issues
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SEA LEVEL RISE
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Planning a Combined or Phased Approach
Understand Long Term Municipal Costs
Understand Political Dynamic
Engage discussion about open space and ecology protection
Hire a Third party facilitator
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SNEAPA - After the Storm: The Planner’s Role for the Next One
Design of Shoreline Protection and Waterfront Structures
Azure Dee Sleicher, P.E.Ocean and Coastal Consultants, Inc.Trumbull, CTwww.ocean-coastal.com
October 201345
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Discussion Topics:
Design criteria and best practices for waterfront structures
Role of regulatory agencies in facilitating best practices
October 201346
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Residential PropertyGreenwich, CT
October 2013 47
After Sandy
• New home sufficiently elevated per FEMA FIRM map – sustained little to no damage.
• Scour and undermining of concrete seawall
• Timber pier destroyed
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Residential PropertyGreenwich, CT
October 2013 48
Apparent seawall structure deficiencies:• Lack of footing • No drainage allowances• No steel reinforcement
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Residential PropertyGreenwich, CT
October 2013 49
Apparent pier structure deficiencies:• Overall lack of initial design criteria• Deck elevation too low • All timber elements• Undersized hardware• Piles not embedded deep enough
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Residential PropertyGreenwich, CT
October 2013 50
Seawall design improvements:•Design for "100-year" storm wave loads•Foundation below expected depth of scour or pinned to rock•Incorporated weep holes and crushed stone behind wall for drainage
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Residential PropertyGreenwich, CT
October 2013 51
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Residential PropertyGreenwich, CT
October 2013 52
Pier design improvements•Design for "100-year" storm wave loads & uplift•Increased top of deck elevation•Steel piles and framing•Grated decking to reduce wave pressures
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Residential PropertyGreenwich, CT
October 2013 53
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Yacht Club PropertyDarien, CT
October 2013 54
After Irene
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Yacht Club PropertyDarien, CT
October 2013 55
After Reconstruction
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Yacht Club PropertyDarien, CT
October 2013 56
After Sandy
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Beach Club PropertyRye, NY
October 2013 57
After Sandy
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Beach Club PropertyRye, NY
October 2013 58
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Beach Club PropertyRye, NY
October 2013 59
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Role of Regulatory Agencies for Future Storm Resiliency
October 2013 60
• General Permits and Emergency Authorizations
• In-kind/in-place replacement of damaged shoreline protection structures
• Minimal/no reporting or after-the-fact permitting
• Allowed owners to quickly rebuild
BUT…
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Role of Regulatory Agencies for Future Storm Resiliency
October 2013 61
Was this the best idea?
•No engineering/future design criteria required
•No increase in seawall height/protection allowed
Will these structures just fail again during the next Sandy event?
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Role of Regulatory Agencies for Future Storm Resiliency
October 2013 62
Take away message… •We need to urge regulators to require waterfront structures to be designed by professionals to meet engineering and material standards as well as account for sea level rise and effects of climate change.•There is a lot of guidance available for development of wave criteria, loads and design of waterfront structures but very few agencies require certification as part of the permitting process.