The Ike Dike. A Coastal Barrier Protecting the. Hurricane Storm Surge. Protecting the Houston/Galveston Region from Hurricane Storm Surge

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1 The Ike Dike A Coastal Barrier Protecting the Houston/Galveston A Coastal Barrier Region from Hurricane Storm Surge Protecting the Houston/Galveston Region from Hurricane Storm Surge

2 If farther west, many more lives lost, much more damage

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5 Dutch Delta Commission Considered Two Major Options Continue building and strengthening internal dikes/barriers Shorten the surge defense needed with a coastal spine

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7 The Ike Dike strategy is to keep the ocean surge out of Galveston Bay by using a gated coastal barrier Houston Ship Channel High Island Bolivar Roads Existing Seawall Intracoastal Waterway Coastal Spine San Luis Pass

8 The first component of the Ike Dike already exists the Galveston Seawall Houston Ship Channel High Island Bolivar Roads Existing Seawall Intracoastal Waterway San Luis Pass

9 The second component - Land Extensions of the protection afforded by the Seawall Houston Ship Channel High Island Bolivar Roads Existing Seawall Intracoastal Waterway San Luis Pass

10 Revetments can be hidden to look natural

11 The third component Flood Gates Houston Ship Channel High Island Bolivar Roads Existing Seawall Intracoastal Waterway San Luis Pass

12 The Bolivar Roads Gates Must not impede navigation Must allow water circulation into the bay under normal conditions But close quickly when a hurricane approaches to provide a 17ft higher-than-sea-level barrier across Bolivar Roads We can use existing technology

13 Possible New York Barrier

14 Dutch Deltaworks and the Ike Dike Shorten the coast as much as possible Keep the surge out of internal waters Use surge gates to accomplish the above And to allow for ship traffic And to preserve marine ecosystem function

15 Ike Dike Additional Characteristics 1 Stops the Surge at the coast where it s the smallest Protects strategic assets of national importance Protects Bay s Natural Resources Occupies the minimum foot print for comprehensive protection Protects every community rich or poor Entire region recovers quickly

16 Ike Dike Additional Characteristics 2 System can be leaky unlike New Orleans, Holland Can use Galveston Bay as a retention pond Only needs to hold maximum surge for a few hours Doesn t harm neighboring communities Doesn t lead to a race for more and higher dikes

17 A Coastal Spine Suppresses Surge and is Technically Feasible Economically Sound Environmentally Friendly, and Socially Just It Should Be the Cornerstone of Our Surge Suppression Strategy

18 Research Team Economics Institute for Regional Forecasting at UH, Dr Bill Gilmer Modeling Homeland Security Center of Excellence at Jackson State, Dr Robert Whalin and Dr Ty Wamsley, USACE/ERDC Barrier Design Delft Technical University, Drs. Bas Jonkman and Mathijs van Ledden Overall Flood Risk Reduction/Project Coordination TAMUG, Drs. Sam Brody and Bill Merrell

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20 Research Approach/Schedule Economic Study ASAP Modeling to Inform Economic Study and Barrier Design Dutch Dialogues And to Understand Galveston Bay s Roles Test Barrier Conceptual Designs Better Cost Estimates Costs/Benefits

21 Chemical Plants Affected By Hurricane Rita (Percent U.S. Capacity Shut Down at Peak) Ethylene Steam Cracker: 58.5% RG Propylene: 30.7% Benzene: 68.5% Polyethylene: 63.0% Styrene: 85.3% Butadiene: 95.8% Data from CMAI, Inc and expressed as percent of North American Capacity

22 Ethylene Capacity on the Gulf Coast Location Number of Crackers Capacity (000 ton/yr) Houston/Texas City 16 13,890 New Orleans/Baton 7 5,380 Rouge Beaumont/Lake 8 5,288 Charles Corpus Christi Oil and Gas Journal

23 New Ethylene Capacity Concentrated on the US Gulf Coast Company Location Capacity (mm lb/yr) Start Up Exxon Baytown 3, Chevron Phillips Baytown Dow Chemical US Gulf Coast 4, Ineos Lake Charles, LA 3, CP Chem Baytown, TX 2, /2017 Braskem/Idesa Mexico 2, Shell Chemical Pennsylvania 2, Formosa Point Comfort, TX 1, LyondellBasell LaPorte, Texas 1, Dow Chemical Hahnville, LA Q4 Williams Lake Charles, LA Q3 Westlake Chemical Lake Charles, LA Ineos Chocolate Bayou, TX Source: Chemical Week, December 2011