Shell Island West NRDA Restoration Catherine Ricks, P.E. Engineering May 6, 2014 committed to our coast committed to our coast

Coastal Protection and Restoration Authority of Louisiana Presentation Outline Project Background Project Overview Map Project Features East Lobe West Lobe Borrow Areas Mississippi River – Dune/Beach & Sand Flat Offshore – Marsh Fill Project Schedule Overview Summary Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Project Background Shell Island West NRDA Restoration Project (BA-111) LCA Barataria Basin Barrier Shoreline (BBBS) Restoration Project Emergency Berm Project constructed in 2010 in response to the Deepwater Horizon Oil Spill, constructed a portion of the Shell Island East Lobe (W8). Shell Island East Berm Barrier Island Restoration Project (Shell East Berm), constructed in 2013 with Berm Enhancement Funds. Shell Island West NRDA Restoration Project (Shell West NRDA) is the construction of the remainder of the East Lobe and the entire West Lobe. Shell Island started the design process as part of the BBBS Restoration project under LCA The dune portion of the eastern extent of the island was constructed under the 2010 Emergency berm construction as a response to the 2010 oil spill Berm Enhancement funds used to complete the construction of the Shell Island East Barrier Island Restoration Project, approximately eastern 1/2 of Shell Island east lobe Shell West NRDA completes the construction of the western portion of the east lobe, and constructs the west lobe Design of Shell Island West NRDA is complete and waiting funding Shell West NRDA is awaiting funding. Coastal Protection and Restoration Authority of Louisiana

BA-111 Shell West NRDA Overview MR-E MR-A MR-B 35-E Shell Island Shell Island West Lobe Shell Island East Lobe Project extents Located in Plaquemines Parish between Gulf of Mexico and Bastian Bay to the west of Empire WW Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Shell Island East Berm Project August 15, 2013 was the last day of dune fill placement. May 4, 2013 September 9, 2013 April 1, 2014 May 2013 aerial showing the construction of the containment dike prior to any dune or marsh fill Last day of fill operations was August 15, 2013 September 2013 aerial after all material placed April 2014 aerial shows the migration of the island to the west and into the design template for the Shell Island West NRDA project. Surveys will be taken at some time prior to the bid process so a redesign can be completed with updated volumes. Coastal Protection and Restoration Authority of Louisiana

Shell West NRDA East Lobe Shell East Berm Project Project Features – East Lobe (as of May 2013) Shell West NRDA East Lobe features include: Marsh fill platform at approximately 3,000 linear feet +2.5’ NAVD88 Containment dike 486,200 cy 60 acres Marsh sand flat at approximately 5,000 linear feet +2.5’ NAVD88 Turbidity Control Structure on the landward/bay side (no containment) 93 acres Beach/Dune at approximately 7,800 linear feet +8.0’ NAVD88 Uniform dune width of 340’ 2,839,000 cy (includes marsh sand flat) 176 acres Marsh Fill (with containment) Access Channel Marsh Sand Flat The volumes shown here are the volumes prior to the construction of the Shell Island East Berm project. At this time the marsh fill platform is offshore material due to volumes available in the river, Will look into river sand for the marsh fill area during an update to the E&D Shell West NRDA East Lobe Plan View Dune/Beach Shell East Berm Project Coastal Protection and Restoration Authority of Louisiana

19,405 acres Marsh Fill Containment Dike Primary Borrow Source Containment Dike Secondary Borrow Source Primary Dike 8 1 Dune/Beach 60 1 Break in Slope at +1.0 30 Marsh Sand Flat 30 1 19,405 acres of coastal habitats benefited One time slope adjustment Slope and dune width may be revised while updating the survey information to account for the change in slope during the Shell East Berm project Shell West NRDA East Lobe Typical Cross-sections Coastal Protection and Restoration Authority of Louisiana

Shell West NRDA West Lobe Project Features – West Lobe Shell West NRDA West Lobe features include: Marsh fill platform approximately 5,600 linear feet +2.5’ NAVD88 Containment dike 878,000 cy 134 acres Beach/Dune constructed approximately 7,000 linear feet +8.0’ NAVD88 Uniform width of 380’ 2,234,000 cy 196 acres Containment Dike Marsh Fill Access Channel Dune/Beach Shell West NRDA West Lobe Plan View Coastal Protection and Restoration Authority of Louisiana

Containment Dike Borrow Source Marsh Fill Primary Dike 30 8 1 Break in Slope at +1.0 1 60 1 Containment Dike Borrow Source Dune/Beach Marsh Fill Primary Dike 30 8 1 1 Break in Slope at +1.0 60 1 Containment Dike Borrow Source Shell West NRDA West Lobe Typical Cross-sections Coastal Protection and Restoration Authority of Louisiana

Dune/Beach and Sand Flat Borrow Areas Project Features – Mississippi River Borrow Areas MR-A 5.3 MCY (Volume are based on pre-Shell East surveys) Cut depths to -75’ NAVD88 and -80’ NAVD88 Shell West NRDA Dune/Beach and Sand Flat Borrow Areas Coastal Protection and Restoration Authority of Louisiana

Dune/Beach and Sand Flat Borrow Areas Project Features – Mississippi River Borrow Areas MR-B 3.96 MCY (Volume are based on pre-Scofield surveys) Cut depths to -80’ NAVD88 Shell West NRDA Dune/Beach and Sand Flat Borrow Areas Coastal Protection and Restoration Authority of Louisiana

Dune/Beach and Sand Flat Borrow Areas Project Features – Mississippi River Borrow Areas MR-E 3.5 MCY (Volume are based on Post-Construction Shell East surveys) Cut depths to -80’ NAVD88 Need to update to post-con Scofield or Shell East Shell West NRDA Dune/Beach and Sand Flat Borrow Areas Coastal Protection and Restoration Authority of Louisiana

Offshore Marsh Fill Borrow Area Project Features – Offshore Borrow Area 35-E 15 MCY (Volume are based on pre-Shell East surveys) Cut depths to -51.0’ NAVD88 and -54.0’ NAVD88 Shell West NRDA Offshore Marsh Fill Borrow Area Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Project Schedule Tasks Completed: Bathymetric and Topographic Surveys – February 2011 and January 2012 Geophysical Investigation and Final Report (Borrow Areas)– May 2012 Geotechnical Investigation and Final Report (Fill Area) – August 2012 Coastal Use Permit – August 2012, Modification – June 2013 COE 404 Permit – October 2012, Modification – Not Required LDWF Fill Material Permit – February 2013 Engineering and Design Future Tasks: Update Bathymetric and Topographic Survey Update E&D Bid Process – Availability of Funding Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Project Summary Dune/Beach Fill Volume: 5,073,000 cy Marsh Fill Volume: 1,123,000 cy Area of Fill: 342 acres Primary Dike: 10,790 linear feet Sand Fencing: 14,400 linear feet Settlement Plates: 17 plates Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana QUESTIONS Coastal Protection and Restoration Authority of Louisiana