presentation title pianc usa: dredging 2012...pianc usa: dredging 2012 rethinking the river city’s...

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BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

PIANC USA: DREDGING 2012 Rethinking the River City’s Dredging A Jacksonville Harbor Case Study

Presented by: Stephanie Groleau, Planning Technical Lead U.S. Army Corps Engineers Jacksonville District October 25, 2012

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District 2

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

WHERE IN THE WORLD IS CARMEN SANDIEGO?

DUVAL COUNTY, FLORIDA

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District 3

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

LOCATION, LOCATION, LOCATION

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

BUSINESS AS USUAL IS GETTING UNUSUAL Unexpectedly high shoaling rates at MOL/TRAPAC terminal Faster filling of DMMAs Upland real estate costs did not drop like other real estate costs FDEP has stricter sediment standards for beach placement Jacksonville Harbor GRR expansion study was accelerated by

President Obama

Bartram Island DMMA

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

WHAT’S HAPPENING!! Raising dikes Innovative weir design Offloading into unusable cells Nearshore placement

ODMDS expansion Habitat restoration Regional Sediment

Management (RSM)

USACE Innovative Design of the Year: Simplicity, Flexibility, Redundancy

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

…AND NOW FOR SOMETHING COMPLETELY DIFFERENT

Build a bridge from Bartram Island to offload by truck to mainland

‘Recycle’ poor quality material to be sold for construction

Public-Private partnership with upland land owners

Trading submerged lands Scour monitoring system Habitat creation

Image Courtesy of Nortek, USA

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

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

THE CHOSEN ONE Creation of islands for the purpose of higher value

habitat and recreation Sediment quality is not suitable for beach or

nearshore placement Cheaper than offshore placement Hope to improve flow in Mill Cove Lands turned over to the State of Florida

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

VANITY, THY NAME IS The Groleau Island Complex

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

THE SHORTEST DISTANCE BETWEEN 2 POINTS IS UNDER CONSTRUCTION

Modeling will determine best orientation for improved flow Turbidity curtain to build a low emergent berm using the

sandy material from the nearby channel Fill islands to 3 elevations using hydraulic dredge Place rock in select areas for essential fish habitat Plant native flora and monitor Remove turbidity curtains; let side slopes become gentle

(1:100) and flows around islands normalize

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

Turbidity Curtain

MHW

MLLW

Wave Break

MHW

MLLW

Settlement

Wave Break

INITIAL

FINAL

4:1 VERTICAL SCALE EXAGGERATION

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

ISLANDS IN THE SUN

Max Footprint: 150 Acres Max Volume of Material: 2.5 MCY

Estimated Savings: $10+ Million

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

IF YOU BUILD IT, THEY WILL COME -1: smooth cordgrass, bulrush

+1/2:saltwort, perennial glasswort, bushy seaside oxeye saltgrass, needle rush, saltmeadow cordgrass, groundsel tree and marshelder

+5: live oak, red cedar, cabbage palm, American holly, yaupon, wax myrtle, and saw palmetto

Animals: deer, otter, raccoon, brown pelicans, coots, egrets, gulls, terns, seaside sparrow, wood stork, alligator, various turtles and snakes

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

IT AIN’T OVER TILL IT’S OVER Still need to finalize:

Resource agency buy in Public support Sovereign Submerged Lands Mitigation Final cost estimates Justification of Jacksonville Harbor GRR

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

LIGHT AT THE END OF THE PIPELINE Expanding Regional Sediment Management

in Florida beyond beach placement Priority is providing high value habitat and

recreation areas to State and community Savings expected to help justify the Jacksonville

Harbor GRR expansion study I get to name an island after myself

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District 15

BUILDING STRONG® US ARMY CORPS OF ENGINEERS | Jacksonville District

ASK ME NO QUESTIONS, I’LL TELL YOU NO LIES

Stephanie Groleau Stephanie.M.Groleau@usace.army.mil

904-232-1979

Coraggio Maglio Coraggio.Maglio@usace.army.mil

904-232-1131