Gordon G. Thomson, P.E., D.CE. Director, Coastal Planning & Engineering, Inc. – A Shaw Group Company Monitoring and Performance Evaluation of Emergency Berms April 25, 2012

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips ►Reach locations and design ►Shell Island ►Pelican Island ►Scofield Island ►Chandeleur Island ►Volume Change Mechanisms ►Summary 2 Emergency Berm Monitoring and Performance EMERGENCY BERM MONITORING & PERFORMANCE ►Sample Text Box Sample Photo Frame

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips 3 Project Location Map EMERGENCY BERM MONITORING & PERFORMANCE

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips ►Crest elevation = +6 ft, NAVD ►Crest width = 20 ft ►Side slopes –1V:25H above -2 ft, NAVD –1V:50H below -2ft, NAVD 4 Emergency Berm Design EMERGENCY BERM MONITORING & PERFORMANCE

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips Shell Island (W-8) 5 EMERGENCY BERM MONITORING & PERFORMANCE ►Start = Oct. 3, 2010 ►End = Nov. 23, 2010 ►As-built length = 8,400 ft ►Pre-construction condition had no continuous shoreline ►As-built volume = 780,000 cubic yards (cy) ►360-day volume = 640,000 cy ►82% of volume remains

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips 6 Shell Island (W-8) EMERGENCY BERM MONITORING & PERFORMANCE

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips ►Start = July 18, 2010 ►End = Oct. 2, 2010 ►As-built Length = 12,400 ft ►Advanced shoreline an average of 260 ft ►As-built volume = 1,240,000 cy ►360-day volume = 980,000 cy ►79% of volume remaining 7 EMERGENCY BERM MONITORING & PERFORMANCE Pelican Island (W-9) Photo courtesy of Great Lakes Dredge & Dock Oct 4, 2011

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips Pelican Island (W-9) 8 EMERGENCY BERM MONITORING & PERFORMANCE

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips ►Start = Sept. 13, 2010 ►End = Nov. 24, 2010 ►As-built length = 14,000 ft ►Advanced shoreline an average of 310 ft ►As-built volume = 960,000 cy ►360-day volume = 880,000 cy ►92% of volume remaining 9 Scofield Island (W-10) EMERGENCY BERM MONITORING & PERFORMANCE

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips Scofield Island (W-10) 10 EMERGENCY BERM MONITORING & PERFORMANCE

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips ►Start = June 20, 2010 ►End = March 21, 2011 ►As-built length = 48,000 ft ►Advanced shoreline an average of 410 ft ►As-built volume = 3,170,000 cy ►180-day volume = 3,490,000 cy 11 Chandeleur Island (E-4) EMERGENCY BERM MONITORING & PERFORMANCE

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips Chandeleur Island (E-4) 12 EMERGENCY BERM MONITORING & PERFORMANCE

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips Volumetric Change Mechanisms 13 EMERGENCY BERM MONITORING & PERFORMANCE ►Frequency of the monitoring surveys allowed for differentiation between the various coastal processes ►Settlement: Compaction of underlying soils ►Overwash: Volume change landward of as-built crest (no net loss of sediment) ►Longshore transport: Sediment movement along Gulf shoreline ►Offshore loss: Loss of fine grained sediment in an offshore direction

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips 14 Profile Comparison: Pelican Island EMERGENCY BERM MONITORING & PERFORMANCE

Gradient Samples 01M042012D Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide Color Palette Use colors from the pre-loaded color palette to increase consistency firm- wide R:0 G: 25 B: 73 R: 25 G:58 B:140 R: 57 G: 104 B: 170 R: 248 G: 152 B: 29 R: 119 G: 160 B: 66 R: 96 G: 129 B: 66 R: 241 G: 95 B: 35 R: 0 G: 147 B: 207 R: 17 G: 82 B: 65 Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Be concise! Try to limit to 6 bullets or less, covering detailed descriptions in your speaking points Use pictures and charts to illustrate your point vs. spelling everything out Use text boxes that are provided on slide to maintain pre-set font styles and automated updates Keep text legible on screen - avoid small font sizes Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Use Caution Make sure text/graphics do not overflow onto the Shaw logo and do not substitute the Shaw for another Design Tips 15Summary EMERGENCY BERM MONITORING & PERFORMANCE ReachShoreline Status Volume Remaining (CY) Shell IslandContinuous640,000 (82%) Pelican IslandContinuous, 260 feet seaward 980,000 (79%) Scofield IslandOne breach 310 feet seaward 880,000 (92%) Chandeleur IslandBreaches at north end 430 feet seaward 3,170,000

Gordon Thomson Director, CPE – A Shaw Group Company CONTACT 16