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

PRESENTATION TITLE

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



LOCATION, LOCATION, LOCATION


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


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


…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



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


VANITY, THY NAME IS The Groleau Island Complex


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


Turbidity Curtain

MHW

MLLW

Wave Break

MHW

MLLW

Settlement

Wave Break

INITIAL

FINAL

4:1 VERTICAL SCALE EXAGGERATION


ISLANDS IN THE SUN

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

Estimated Savings: $10+ Million


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


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


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



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

Stephanie Groleau [email protected]

904-232-1979

Coraggio Maglio [email protected]

904-232-1131

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

Documents