FLAGLER COUNTY FLORIDA - United States Army · 2014-02-10 · FLAGLER COUNTY FLORIDA . Hurricane...

FLAGLER COUNTY FLORIDA Hurricane and Storm Damage Reduction Study

BUILDING STRONG® U.S. ARMY CORPS OF ENGINEERS | Jacksonville District

Public Workshop February 5, 2014 Presented by U.S. Army Corps of Engineers Jacksonville District

BUILDING STRONG® U.S. ARMY CORPS OF ENGINEERS | Jacksonville District

PRESENTATION OUTLINE Background Problems and Opportunities Objectives Future Without Project Conditions Plan Formulation • Tentatively Selected Plan (TSP)

Engineering Aspects Cost Aspects Environmental Aspects

Schedule & Next Steps

2

STUDY BACKGROUND

BUILDING STRONG® U.S. ARMY CORPS OF ENGINEERS | Jacksonville District 3

2002

Study Authorized

(House Resolution 2676)

2004

Reconnaissance Report

Feasibility Cost-Sharing Agreement

2008

Feasibility Study

Initiated

2011

Feasibility Scoping Meeting

2014

Draft Feasibility Study and

Environmental Assessment

PROBLEMS AND OPPORTUNITIES Problems: Erosion, storm surge (inundation),

and wave attack Damage to coastal structures

and infrastructure including A1A evacuation route

Loss of natural beach habitat Threatened recreational and tourism

opportunities


Opportunities:

Reduce storm damage to coastal structures and infrastructure

Restore dunes to function naturally Protect natural habitat Protect the current hurricane

evacuation route capability Maintain recreation and tourism

opportunities

1. Reduce storm damages to structures and infrastructure

2. Maintain environmental quality

3. Maintain recreational opportunities

4. Maintain a safe hurricane evacuation route

STUDY OBJECTIVES


R-50

R-60 BEVERLY BEACH

R-67

R-1

R-4 MARINELAND

SR 100

NOT TO SCALE

FLAGLER COUNTY

STUDY REACHES

PAINTER’S HILL

R-101

FLAGLER BEACH

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District BUILDING STRONG® U.S. ARMY CORPS OF ENGINEERS | Jacksonville District 6

6

DESIGN REACHES

R-101

NOT TO SCALE

SR 100

R-50

R-60

R-80

R-94

Reach A

Reach B

Reach D (S 28th Street)

(7th Street S)

Unarmored Single Family Residences

Pier & Parking

Unarmored SR A1A & Park

Reach C Armored

SR A1A

Unarmored SR A1A


FUTURE WITHOUT PROJECT (FWOP) CONDITION

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

$0

$1

$2

$3

$4

$5

$6

$7

$8

$9

ERO

SIO

N R

ATE

(FT/

YEA

R)

Mill

ions

LONG TERM DAMAGES AND EROSION RATES FWOP Damages Historic Erosion Rates

| A | B | C | D |

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District BUILDING STRONG® U.S. ARMY CORPS OF ENGINEERS | Jacksonville District 7 BUILDING STRONG® U.S. ARMY CORPS OF ENGINEERS | Jacksonville District 7

Design Reaches

8

PLAN FORMULATION

8 NOT TO SCALE

Reach A

Reach C

Reach D Project not economically justified (benefits do not exceed costs)

Project not economically justified (benefits do not exceed costs)

Federal participation is prohibited by Corps policy due to inadequate public parking and access

R-50

R-60

R-101

SR 100 R-80

R-94

Reach B

(S 28th Street)

(7th Street S)

TENTATIVELY SELECTED PLAN:

Meets all study objectives and is consistent with Corps policy


TENTATIVELY SELECTED PLAN (TSP)

7th Street S

S 28th Street

2.6 Miles

10-foot dune and beach profile extension

11-year average nourishment interval Borrow Area 7 miles offshore

320,000 cubic yards per average nourishment

50-year period of Federal participation


ENGINEERING ASPECTS 10-foot seaward extension of the dune and beach profile in Reach C

HIGH TIDE

LOW TIDE

25

20

15

10

5

0

-5


TYPICAL PROFILE FOR TSP – REACH C, DUNE H

DISTANCE FROM R-MONUMENT (FT)

ELEV

ATIO

N (F

T-N

AV

D88

)

100 200 300 400 150 250 350

Existing

10-Foot Dune Extension Construction Template

TENTATIVELY SELECTED PLAN (TSP) CONCEPTUAL RENDERING

Existing Condition Location: FDOT seawall


Restored dunes and equilibrated

beach profile

COST ASPECTS Initial Construction: $14,127,000

Periodic Nourishments (4 events): $7,357,000 Total Project Cost: $43,465,000 over 50 years

Federal Cost (65%) Non-Federal Cost (35%) $9,182,550 $4,944,450

Federal Cost (50%) Non-Federal Cost (50%) $3,678,500 $3,678,500


ENVIRONMENTAL ASPECTS Dune extension will be vegetated with native plants to

stabilize the dune and promote wildlife usage Nesting habitat Food source Biodiversity

Hardbottom resources are outside of borrow and sand placement areas– no impacts to occur

No effect to cultural resources


The Tentatively Selected Plan (TSP) meets the objective to reduce damages caused by coastal erosion, is environmentally acceptable, and has been formulated according to Corps Policy:

TSP SUMMARY

Benefit Cost Ratio: 1.83

Maximizes net benefits for storm damage reduction

Maintains environmental quality and is environmentally favorable compared to the FWOP condition

Maintains recreational opportunities

Maintains evacuation route


Problem Identification

Reconnaissance Study

Feasibility Study

Pre-construction, Engineering,

& Design

Project Authorization & Appropriations

Project Construction

2002 2014

2016* 2017*

*

SCHEDULE AND NEXT STEPS

COMPLETED 2004

COMPLETED CURRENT STATUS

Subject to Future Federal Funding

2015*


HOW TO PROVIDE COMMENTS Mail to: U.S. Army Corps of Engineers, Jacksonville District ATTN: Kathleen McConnell (CESAJ-PD-EC) 701 San Marco Boulevard, Jacksonville, FL 32207 E-mail to: [email protected] Comment cards may be turned in tonight Public comment period ends on February 18, 2014


mailto:[email protected]

POSTERS STATIONS

Study Overview Environmental Economics Engineering Beach Basics


THANK YOU


2 Minute Timer

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FLAGLER COUNTY FLORIDA - United States Army · 2014-02-10 · FLAGLER COUNTY FLORIDA . Hurricane...

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