Bayou Dupont Sediment Delivery – Marsh Creation #3 (BA-164) 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 Borrow Areas Project Schedule Overview Summary Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Project Background Bayou Dupont Sediment Delivery – Marsh Creation #3 (BA-164) CWPPRA PPL #22 Project Approved in 2013 Cells located in Jefferson and Plaquemines Parish Project proposed to utilize sediment from the Mississippi River to nourish an area of open water and marsh remnants to complement existing restoration projects Primary goal is to create just over 400 acres of marsh Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Potential Borrow Areas Bayou Dupont #3 Overview Existing and Under Construction Restoration Projects Project extents Located in Plaquemines Parish between Gulf of Mexico and Bastian Bay to the west of Empire WW BA-39 constructed in 2010 Bayou Dupont #3 (BA-164) Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Bayou Dupont #3 Plaquemines Parish Jefferson Parish Most of the area is open water In the E&D process we are considering unconfined or partially unconfined fill cells. Constructability wise which would be preferable? Bayou Dupont #3 (BA-164) Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Project Features – Mississippi River Borrow Areas Wills Point 2.38 MCY (based on BA-48/ Long Distance design surveys) Cut depths to -90’ NAVD88 45.2 acres Alliance Anchorage 7.1 MCY (based on BA-48/ Long Distance design surveys) Cut depths to -90’ NAVD88 144.3 acres Wills Point: 45.2 acres, 2,800 feet long, 680-715 feet wide Alliance Anchorage: 144.3 acres, 7,010 feet long, 600-1050 feet wide Myrtle Grove: 168 acres, 9,100 feet long, 300-925 feet wide Myrtle Grove Potential 7.9 MCY to -90’ NAVD88 168 acres Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Project Schedule Tasks Completed: Borrow Area Surveys Wills Point – Bathy, mag and geotech: 2012; Cultural Resource: 2011 Alliance Anchorage – Bathy: 2011; Geotech: 2012 Myrtle Grove – Bathy, mag and Cultural resource: 2012 Fill Area Bathymetric and Topographic Surveys – March and April 2014 Applied for Geotechnical Permit – February 2014 Received Geotechnical CUP – March 2014 Waiting on COE Geotechnical Permit Future Tasks: Geotechnical Investigation and Final Report (Fill Area) – July 2014 Apply For Coastal Use Permit (State and COE) – September 2014 Engineering and Design – October 2014 Apply for LDWF Fill Material Permit – October 2014 Wills Point (CR October 2011, Bathymetric (multibeam) and Mag August 2011, Geotech – 2 borings June 2012) Alliance Anchorage (Bathy August 2011, Geotech – 2 borings June 2012) Myrtle Grove (Bathy, Mag, and CR January 2012) Coastal Protection and Restoration Authority of Louisiana

Coastal Protection and Restoration Authority of Louisiana Project Summary Area of Fill: 410 acres E&D in process Will Compete for Construction Funding in Winter 2014 Coastal Protection and Restoration Authority of Louisiana

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