Morganza to the Gulf of Morganza to the Gulf of Mexico ProjectMexico Project

State & Local ViewsState & Local Viewsandand

Path ForwardPath Forward

Jerome ZeringueJerome ZeringueCPRACPRA

Morganza Technical Review Morganza Technical Review PanelPanel

CPRA Convened a Panel of Experts CPRA Convened a Panel of Experts to Evaluate and Report Findings on to Evaluate and Report Findings on Morganza ProjectMorganza Project

Consider Projects Reliability to Consider Projects Reliability to Provide Flood Reduction and Provide Flood Reduction and Environmental Benefits that can be Environmental Benefits that can be Provided by the Authorized Project Provided by the Authorized Project

Morganza Technical Review Morganza Technical Review PanelPanel

Recommendations Recommendations IMPLEMENTATIONIMPLEMENTATION

Continue Work on Levees, Floodgates & Continue Work on Levees, Floodgates & Environmental Structures – Authorized Environmental Structures – Authorized AlignmentAlignment

Continue Work on the HNC Lock ComplexContinue Work on the HNC Lock Complex Integrate proactive wetlands restoration Integrate proactive wetlands restoration

approachapproach Routinely (~ every 5 years) Evaluate Project Routinely (~ every 5 years) Evaluate Project

to reassessto reassess Risk to CommunitiesRisk to Communities Ecosystem SustainabilityEcosystem Sustainability

Morganza Technical Review Morganza Technical Review PanelPanel

RecommendationsRecommendations PLANNINGPLANNING

Initiate Comprehensive Community Based Initiate Comprehensive Community Based Planning ProcessPlanning Process

Increase Efforts to Inform Business Increase Efforts to Inform Business Community & General Public – Level of Community & General Public – Level of Protection and Risk ReductionProtection and Risk Reduction

Implement Comprehensive Flood Implement Comprehensive Flood Management ApproachManagement Approach

Non-StructuralNon-Structural Incentivize options for businesses & general Incentivize options for businesses & general

publicpublic Conservation Easements, Land Use Plans, Conservation Easements, Land Use Plans,

ZoningZoning

Morganza Technical Review Morganza Technical Review PanelPanel

RecommendationsRecommendations TOOLS & ANALYSISTOOLS & ANALYSIS

Develop System wide ModelDevelop System wide Model Ecosystem sustainability (operation of environ. Ecosystem sustainability (operation of environ.

structures) structures) Hold Workshop/Convene Panel Hold Workshop/Convene Panel

Develop knowledge of effects of flooding & Develop knowledge of effects of flooding & salinity changessalinity changes

Evaluate project impacts to wetlandsEvaluate project impacts to wetlands Apply Planning ToolsApply Planning Tools

Consideration/Planning: future economic, social Consideration/Planning: future economic, social and environmental scenariosand environmental scenarios

Guide future phases of project construction, Guide future phases of project construction, prioritizationprioritization

If you are asked, I would just encourage parish officials who are interested in using some of their Gustav/Ike parish allocation for coastal/restoration projects to begin drafting descriptions of projects they are considering and providing those to us (Myself, Pat Forbes, KVO, Robin, Lynn or Sandra). We have not received approval of our action plan yet so we can not say with certainty what will be eligible. Then we will conduct outreach over the next few months to outline for parishes what coastal protection work can be funded by CDBG. If you are asked, I would just encourage parish officials who are interested in using some of their Gustav/Ike parish allocation for coastal/restoration projects to begin drafting descriptions of projects they are considering and providing those to us (Myself, Pat Forbes, KVO, Robin, Lynn or Sandra). We have not received approval of our action plan yet so we can not say with certainty what will be eligible. Then we will conduct outreach over the next few months to outline for parishes what coastal protection work can be funded by CDBG.

Building Strong 6

New Orleans DistrictNew Orleans District

Morganza to the Gulf of Mexico Risk Reduction

Project

Morganza to the Gulf of Mexico Risk Reduction

Project

14 January 2009

Briefing on Analysis of Alternative AlignmentsCarl Anderson, Senior Project Manager

Building Strong 7

• Design CriteriaDesign Criteria– New Hydraulic Analysis for 100-year Surge Levels and New Hydraulic Analysis for 100-year Surge Levels and

WavesWaves– New Hydraulic Standards for Wave Run-Up and Overtopping New Hydraulic Standards for Wave Run-Up and Overtopping – New Geotechnical and Structural Design StandardsNew Geotechnical and Structural Design Standards

• Borrow Composition and Compaction StandardsBorrow Composition and Compaction Standards• New Method for Stability Analysis; Higher Factor of SafetyNew Method for Stability Analysis; Higher Factor of Safety• Wider Levee Base, Increased FootprintWider Levee Base, Increased Footprint

– More than an 60% Increase in ElevationsMore than an 60% Increase in Elevations– More than a 300% Increase in Base WidthsMore than a 300% Increase in Base Widths

• Increase in QuantitiesIncrease in Quantities– Borrow MaterialBorrow Material– MitigationMitigation– Real EstateReal Estate

• Unit Price IncreasesUnit Price Increases

Hurricane Katrina/Rita ImpactsHurricane Katrina/Rita Impacts

Building Strong 8

Comparison of Similar Levee Cross-SectionsComparison of Similar Levee Cross-Sections

Levee Cross-Section – changes due to Katrina/RitaLevee Cross-Section – changes due to Katrina/Rita– – > 60% increase in height > 60% increase in height

- 15’ to 28’- 15’ to 28’– – > 300% increase in base width> 300% increase in base width

- 200’ to 725’- 200’ to 725’

Current 100-year Cross-Section superimposed on Authorized Cross Section

Building Strong 9

• Considerations:Considerations:

– Estimated direct impacts on bottomland hardwoods and marsh for Estimated direct impacts on bottomland hardwoods and marsh for each of the 4 alternative footprintseach of the 4 alternative footprints

– All alternatives utilized top 5 ft organic material from adjacent All alternatives utilized top 5 ft organic material from adjacent borrow pits to create marsh; resulted in surplus marsh creation borrow pits to create marsh; resulted in surplus marsh creation over mitigation requirementover mitigation requirement

– More detailed wetland impact study needed for Revised More detailed wetland impact study needed for Revised Programmatic Environmental Impact StatementProgrammatic Environmental Impact Statement

Environmental AnalysisEnvironmental Analysis

Building Strong 1010

Alternative # 1: Alternative # 1: Authorized Alignment at Post-Katrina 100-year Elevations Authorized Alignment at Post-Katrina 100-year Elevations

Levee Length – 64.6 miles

Building Strong 11

AlternativeAlternative # 2: # 2: Feasibility Alternative #5 at Post-Katrina 100-year ElevationsFeasibility Alternative #5 at Post-Katrina 100-year Elevations

Levee Length – 55.2 miles

Building Strong 12

Alternative 3: Alternative 3: Multiple Lines of Defense (NGO Plan) at Post-Katrina Multiple Lines of Defense (NGO Plan) at Post-Katrina 100-year Elevations 100-year Elevations

Levee Length – 63.0 miles

Building Strong 13

Alternative # 4: Alternative # 4: Authorized Alignment at Post-Katrina 25-year ElevationsAuthorized Alignment at Post-Katrina 25-year Elevations (Pre-Katrina 100-year Elevations) (Pre-Katrina 100-year Elevations)

Levee Length – 64.6 miles

Building Strong 14

Project Cost for Alternatives by Account

Alt 1 Alt 2 Alt 3 Alt 4

01 Lands and Damages 38 57 119 17

02 Relocations 39 43 21 23

05 Locks 297 297 211 211

06 Fish & Wildlife Facilities 1,660 1,523 1,995 510

11 Levees & Floodwalls 5,315 4,505 4,632 1,141

15 Floodgates 397 340 530 314

30 E&D 445 381 406 139

31 CM 399 345 360 132

TOTAL ($ in Millions) 8,590 7,489 8,274 2,486

Building Strong 15

Alt 1 Alt 2 Alt 3 Alt 4

TOTAL Costs ($ in Millions) 8,590 7,489 8,274 2,486

Bottomland Hardwoods Impacted 1,024 ac 1,358 ac 3,776 ac 331 ac

Marsh Impacted 5,558 ac 4,953 ac 3,901 ac 1,562 ac

Total Marsh Created 13,511 ac 11,532 ac 12,003 ac 3,535 ac

Total Benefits - Ranking 1 2 3 4

Net Benefits - Ranking 2 3 4 1

Comparison of Alternatives

Building Strong 16

FindingsFindings• Results of Analysis (2008)Results of Analysis (2008)

– Authorized alignment: Authorized alignment: • Follows the Congressional authorized alignmentFollows the Congressional authorized alignment• Provides risk reductionProvides risk reduction• Reduces salt water intrusion for the largest project area; therefore, incorporating the Reduces salt water intrusion for the largest project area; therefore, incorporating the

most residences and businesses within the system.most residences and businesses within the system.• 80% of the authorized alignment overlays existing hydrologic barriers so the levee 80% of the authorized alignment overlays existing hydrologic barriers so the levee

system will cause fewer impacts to the existing water circulationsystem will cause fewer impacts to the existing water circulation• Confirmed as the best possible alignmentConfirmed as the best possible alignment• Terrebonne Levee and Conservation District supports construction of authorized Terrebonne Levee and Conservation District supports construction of authorized

project at Post-Katrina 25-year elevations (Alternative 4)project at Post-Katrina 25-year elevations (Alternative 4)– Analysis supports justification for proceeding to Post Authorization Change Analysis supports justification for proceeding to Post Authorization Change

ReportReport

Building Strong 17

Summary and Follow on ActionsSummary and Follow on Actions

• Prepare Post Authorization Change ReportPrepare Post Authorization Change Report

• Revise Programmatic Environmental Impact Statement Revise Programmatic Environmental Impact Statement (RPEIS)(RPEIS)

• Proceed with 100% Plans & Specifications on the Houma Proceed with 100% Plans & Specifications on the Houma Navigation Canal Lock Complex prior to completing PACNavigation Canal Lock Complex prior to completing PAC

• Obtain Congressional Re-Authorization and AppropriationObtain Congressional Re-Authorization and Appropriation

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REACH J-1

REACH J-32/1/2010

REACH H31/15/2009

REACH H22/1/2010

REACH H12/1/2010

REACH G2/1/2010

REACH F2/1/2010

REACH E2/1/2010

REACH J-27/1/2009

BAYOUGRAND CAILLOU

12/1/2009

HOUMANAVIGATION CANAL

12/1/2009

BAYOUPOINT AUX CHENES

12/1/2009

PLACID CANAL12/1/2009

BUSH CANAL12/1/2009