april 20, 2011 shoreline protection emergency restoration plan

April 20, 2011

Shoreline Protection Emergency Restoration

Plan

Photo Credit: NOAA

Plan Overview

Goal: To protect areas where the marsh vegetation was highly impacted by the DWH Spill in order to avoid irreversible losses and reduce the continuing threat to natural resources located in areas of coastal Louisiana.

• Site Selection

• Local Coordination

• Field Reconnaissance

• Phased Approach

Photo Credit: NOAA

Phase 1: Potential Shoreline Protection Areas

Barataria Bay

REAC

H -

H

Photo Credit: NOAA

Reach - H

Location: Plaquemines ParishReach Length: .27 miles

REAC

H -

I

Photo Credit: NOAA

Reach - I

Location: Plaquemines ParishReach Length: .91 miles

REAC

H -

J

Photo Credit: NOAA

Reach - J

Location: Plaquemines ParishReach Length: .87 miles

REAC

H -

K

Photo Credit: NOAA

Reach - K

Location: Plaquemines ParishReach Length: .47 miles

Lightweight Shoreline Protection Options

Examples of Types of Lightweight Protection

Treatments Being Considered

• Lightweight gabions (TE-45 Terrebonne Bay Shore Demo): Rock or shell filled steel baskets

• Deltalok – sandbag mat

• Submerged articulated concrete revetment mats (TE-41 Mandalay Bay Demo)

• Oyster Shells

• Floating Island Technologies – Pre-planted matrix

REAC

H: S

OU

TH P

ASS

SPIT

Photo Credit: NOAA

South Pass Spit

Location: Plaquemines ParishReach Length: 1.88 miles*

*Approximate length to be surveyed for sand fencing if implemented

REAC

H: F

OU

RCH

ON

BEA

CHLocation: Lafourche ParishReach Length: 3.73 miles

* Approximate length to be surveyed for sand fencing if implemented

Photo Credit: NOAA

Next Steps

• Design and Permit Phase 1 Areas• File for CIAP Modification• Bid Construction• Sequence Construction with Ongoing Shoreline

Treatments• Develop Phase 2 Plans