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Hazard Mitigation Plan
Public Meeting #2March 10th, 2010
USDA: NRCC Photo Gallery
Introduction About the Sewerage and Water Board of New Orleans What is Hazard Mitigation? Hazard Mitigation Plan Overview Hazard Assessments Vulnerability Assessments
Mitigation Projects Updating and Monitoring the Plan Continued Public Involvement
Plan Adoption and Next Steps Summary Public Comments Wrap-Up
Agenda
Paul G. Seldes, Lambert Engineers, LLC
Team Introductions
Sewerage and Water Board Marcia St. Martin, Executive Director Robert Miller, Deputy Director
Emergency Management Operations Jason Higginbotham Tom Miller
Environmental Affairs Division Gordon Austin Harvey Stern
Community and Intergovernmental Relations Robert Jackson
Risk Management Ike Cameron
Lambert Engineers Paul Seldes, FPEM, CHS-III - Hazard Mitigation Consultant & Project Manager Dennis Lambert, PE Rich Campanella, GIS Specialist
Infinity Engineering Consultants Michael Leitzinger
GOHSEP Shenetia Henderson-McGee
About TheSewerage and Water Board of New Orleans
The Sewerage and Water Board (S&WB) has been serving citizens and protecting the environment since 1899. Originally formed to combat disease by providing safe drinking water and eliminating the health hazards of open sewer ditches, today the S&WB continues its mission using 21st century technology.The Sewerage and Water Board of New Orleans consists of the Mayor, the two at-large council members of the City Council, one district councilman selected by the Council, two members of the Board of Liquidation, City Debt, and seven citizen members appointed by the Mayor, in accordance with the law, for overlapping terms of 9 years.
The S&WB is divided into 3 main areas: Water, Sewerage and Drainage; serving 101,833 residential customers, 4,503 multi-residential customers, 12,350 commercial customers and 40 industrial customers for a customer base of 118,726
Water
Sewer
Drainage
Hazard Mitigation
80% of New Orleans Flooded
What is ―Hazard Mitigation‖?
Any sustained measures undertaken to reduce or eliminate the risks posed by natural and/or manmade hazards on a place and its population.
Hazard Mitigation Plan:
A plan to reduce a jurisdiction’s risk and exposure to disasters
Local governments must have a local hazard mitigation plan to apply for certain federal grant programs
What is ―Hazard Mitigation‖?
Hazard mitigation measures can include structural projects…
What is ―Hazard Mitigation‖?
… non-structural projects …
What is ―Hazard Mitigation‖?
…regulatory and policy practices…
What is ―Hazard Mitigation‖?
…training and educational programs…
What is a Hazard Mitigation Plan?
It all boils down to two basic questions:
1.What hazards present the greatest risk to the jurisdiction and its citizens?
2.What are the most effective ways to reduce those risks?
Regulatory Requirements
44 CFR 201 – Code of Federal Regulations The Stafford Act - Robert T. Stafford Disaster Relief and Emergency
Assistance Act of 1988 (amended by DMA 2000)
44 CFR 201.6 details the requirements for local hazard mitigation plans
Local plans must be submitted to State (GOHSEP) and FEMA for approval.
44.CFR.201 requires the plan be updated every 5 years
More information on HMGP available at http://www.fema.gov/government/grant/hmgp/index.shtm
The State of Louisiana Hazard Mitigation Plan: http://gohsep.la.gov/mitigation/statehazmitplan_08/hazmitigatpln_08.htm
The goal is to mitigate the losses from identified hazards.
Why does the Sewerage and Water Board need a plan?
The purpose of this project is to develop a Local Hazard Mitigation Plan (LHMP) that complies with the HMGP (Hazard Mitigation Grant Program) and 44.CFR.201.6 and classifies the Sewerage andWaterBoard of New Orleans as a single, local jurisdiction.
As a single, local jurisdiction with a LHMP, the S&WB can be a direct applicant to the State for various FEMA grant funding programs and reimbursements.
Planning Process Overview
There is a lot of jargon that is used to describe the planning process. We’ll try to be jargon free.
This graphic shows the process recommended by FEMA. We’ll go thru this step-by-step.
Hazard Mitigation Simplified 4 Phase Process
Organize Resources
Assess Hazards & Risks
Develop a Mitigation Plan
Implement the Plan & Monitor
Progress
How is the Plan Structured?
Introduction and process
Identification of hazards and threats from natural or manmade sources
Assessment of risks to populations, property, economies
Critical Facility Data
Assessment of capability for hazard mitigation
Action plans to reduce risk
Plan Implementation and Maintenance
Phase 1 – Organize Resources
Assess Community Support
Build the Planning Team
Engage the Public*
Organize resources and process
The S&WB service networks (water, sewer, drainage) are critical facilities
Hazards impact the S&WB differently than they impact the City of New Orleans
We seek to identify and mitigate the ―systemic‖ impact that represents a risk to public health, safety and service delivery.
S&WB Differences
Phase 2 – Assess Risks
Risk assessment answers the fundamental question that fuels the natural hazard mitigation planning process: "What would happen if a natural hazard event occurred in this area?"
Risk assessment is the process of measuring the potential loss of life, personal injury, economic injury, and property damage resulting from natural hazards by assessing the vulnerability of people, buildings, and infrastructure to natural hazards.
Identified Hazards
Natural Hazards Manmade Hazards
Hurricane/Tropical Cyclone -
Flood
Terrorism/Civil Unrest
Hurricane/Tropical Cyclone -
Wind
Levee Failure
Flood (other) Hazardous Materials
Earthquake Cyber Attack
Tornado
Pandemic Disaster Aftermath
Severe Thunderstorms
Lightning
Severe Heat/Severe Cold
Storm Surge
Hailstorm
Drought
Subsidence (Erosion, Expansive
Soils)
Wildfire
Winter Storm
Avalanche
Tsunami
Volcano
Included Hazards
Hazard Why Identified Probability Impact History
Flood High risk of
occurrence
High High Katrina 2005, Ivan 2005, TS Isidore
2002, Lilli 2002
TS Allison 2001, April 1999
flooding
Hailstorm NOLA has recorded
the 8th most costly
hailstorm hazard for
the US
Low Low 2002 hailstorm with minimal
damage to a crane (DPS 6)
Hazardous Materials Potential for
occurrence and
impact to S&WB
assets
Presents systemic
impact to S&WB
Low High July 23, 2008 – oil spill in river
Oct 28, 2008 – oil spill in river
Hazard Why Identified Proba
bility
Impact History
Hurricane/Tropical
Cyclone (Storm) –
Flood
Coastal Storm
Region is at
significant risk for
this hazard event
per historical record
High High Katrina 2005, Ivan 2005, TS
Isidore 2002, Lilli 2002
TS Allison 2001
Hurricane/Tropical
Cyclone (Storm) –
Wind
Coastal Storm
Region is at
significant risk for
this hazard event
per historical record
High High Katrina 2005, Ivan 2005, TS
Isidore 2002, Lilli 2002
TS Allison 2001
Hazard Why Identified Probability Impact History
Levee Failure Catastrophic
potential impact
Low High Katrina 2005
Lightning / Severe
Storm
/ Thunderstorm
High probability of
occurrence
High Medium Various
Severe Heat / Severe
Cold / Winter Storm
Exacerbates general
maintenance and
repair
Low Low Various
Saltwater Intrusion Presents systemic
impact to S&WB
Medium Medium Occurrence in mid-1980’s. no
data currently available.
Storm Surge Catastrophic
potential impact
High High Katrina 2005
Subsidence (Erosion) Long term damage
Exacerbates damage
by other hazards
Medium Low No data in historical record
Tornado Significant damage
results
Medium Low Two tornados in 2006. No
damage to S&WB assets in
historical record.
Feb 2007
Risk Assessments
Probability
Impact Low Medium High
HighHazardous Materials Levee Failure
Flood Hurricane Flood - Hurricane Wind Storm Surge
Medium Salt Water IntrusionLightning Severe Storm Thunderstorm
LowSevere Heat/ColdWinter Storm
Subsidence Tornado
Hailstorm
Each hazard is defined in terms of:
Description – What is this hazard?
Past Occurrences – When has this hazard occurred?
Location – What areas are subject to the hazard?
Severity – How bad can the hazard get?
S&WB Impact – What can this hazard do to S&WB assets?
Probability – How likely is this hazard?
Risk Assessment
Vulnerability Assessment
As part of the assessment we also:
1.Assess relative importance or ―criticality‖ of facilities
2.Assess risk to facilities from different hazards, based upon estimated losses
The S&WB network is widespread and complex and serves as part of the perimeter defense for the City
of New Orleans.
Vulnerability Summary
Hazard Vulnerability
Flood Due to the potential for significant flooding (see Figure 26), S&WB
assets located throughout the services area are at risk. The damage or
loss of a single critical asset (pump station, treatment plant, intake),
places greater burden on other system components thereby increasing
the risk to the entire system. Flooding poses a systemic risk with
potential losses dependent on the extent of flooding. Major flooding as
seen after Hurricane Katrina poses potential losses in the hundreds of
millions of dollars. Key factors for losses remain the depth and duration
of flood water.
Hailstorm Hailstorms can occur anywhere in the region and structures and vehicles
are vulnerable to damage. Damage from this hazard tends to be non-
systemic and be repair and maintenance oriented.
Hazardous Materials Hazardous spills in close proximity to water intakes remain possible
given the traffic on the Mississippi River. The closure of water intakes
would pose a significant risk to the potable water supply for the S&WB
service area. There is no alternate source of potable water for the
service area. Any loss of water intakes for an extended period would
represent a financial impact beyond measure.
Hurricane/Tropical Cyclone
(Storm) – Flood
Coastal Storm
Historically, the New Orleans region is extremely vulnerable to this
hazard. The combined impacts (wind, rain, flood, levee, storm surge)
place the entire S&WB network in the risk area. See the “Flood” hazard
description above.
Hurricane/Tropical Cyclone
(Storm) – Wind
Coastal Storm
Historically, the New Orleans region is extremely vulnerable to this
hazard. The combined impacts (wind, rain, flood, levee, storm surge)
place the entire S&WB network in the risk area. The standing HV power
lines are at risk from wind damage. Based on Katrina (2005), $2,000,000
was spent to repair/replace these poles. S&WB buildings are subject to
“typical” structural building damage from storm winds (roof, windows,
wall, etc).
Levee Failure Though unlikely by itself, the resultant flooding from a levee failure
would knock out sections of the S&WB network. The vulnerability of
S&WB assets are consistent with the flood hazard (above).
Lightning / Severe Storm
/ Thunderstorm
Flooding from severe storms and thunderstorms can pose a significant
risk. Heavy rainfall events are not uncommon in the region and assets
vulnerable to flooding are at risk from this hazard. Lightning strikes in
the region are also fairly common. HV equipment and system are
vulnerable to over voltage and voltage spikes. Aside from flood
potential, most vulnerability remains similar to the flood hazard (above)
Severe Heat / Severe Cold /
Winter Storm
The infrastructure (pipes, valves, etc) are subject to damage from
extended freeze events. Some equipment is subject to overheating
during extended heat event. This hazard tends to be non-systemic and
repair/maintenance oriented.
Saltwater Intrusion Depending on the proximity of a salt water ridge to water intakes and
the concentration levels of sodium chloride, the entire potable water
system is vulnerable. Loss of the potable water system is a financial
impact beyond value.
Storm Surge Given the high risk of tropical storms, storm surge poses the same issues
as flood and levee failure for S&WB assets.
Subsidence (Erosion) This hazard poses a risk to all underground infrastructure (pipes, mains,
valves). As this is a slow process, the issue is non-systemic.
Tornado The region has a moderate risk for tornados given the national averages
(see Figure 36). Structures and assets can be struck but a) the damage
tends to be non-systemic, and b) the region tends to experience minor
F0-F2 events.
Phase 3 – Develop a Mitigation Plan
The data gathered in the previous phases and the information revealed in the hazard profiles and loss estimation will be used to develop mitigation goals and objectives.
Mitigation goals are guidelines that explain what you want to achieve.
Mitigation objectives are statements that detail how those goals will be achieved.
Develop a Mitigation Plan
Range of actions considered
Stormproofing Pumping Stations
Policy and Organizational Changes
Enhance/Expand Power Generation
Protect critical network components
Analysis of mitigation actions
Prioritization Methodology
Mitigation Actions
74 identified mitigation projects•4 projects completed•63 projects related to Sewer Pumping Stations•3 projects related to policy or procedure issues•5 projects with undefined timelines•35 projects scheduled for completion in 2010
Total of Estimated Amounts for projects is $98,184,480
Phase 4 – Implement the Plan and Monitor Progress
Adopt the mitigation plan
Implement the plan recommendations
Evaluate your planning results
Revise the plan
Implement the Plan
Monitor and Update the Plan
The plan is typically a ―living‖ document
44.CFR.201.6 requires that plans are updated every 5 years
The plan should also be evaluated and revised following actual disasters
When updating the plan we also evaluate the process
44.CFR.201.6 requires ongoing public involvement in the update process
Draft Plan concept reviewed and approved by S&WB Infrastructure Committee on 3/3/2010
Draft Plan to be reviewed by Sewerage and Water Board Directors 3/17/2010
Informal submission to FEMA and State
Plan comments from FEMA will be reviewed and addressed (if any)
Plan will receive formal adoption from the Board
State and FEMA formally approve Plan
End Date for all the above is April 11th, 2010
Plan Adoption
The approved plan will be available on the Sewerage and Water Board website: http://www.swbno.org
Summary
Organize Resources
Assess Hazards & Risks
Develop a Mitigation Plan
Implement the Plan & Monitor
Progress
Public Comment
Please complete a speaker comment card
Speak for up to 3 minutes per speaker
There will be a 10 minute break before comments
Contact
For more information or questions contact:
Mr. Jason Higginbotham
Sewerage and Water Board of New Orleans
Emergency Management Operations
625 St. Joseph St.—Room 117, NO 70165
(504) 585-2020
Hazard Mitigation Plan Consultants
Lambert Engineers, LLC
Paul G. Seldes – Hazard Mitigation Consultant
504-529-7687