Dredging 101 Dredging And Disposal Workshop

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Dredging 101Dredging and Disposal WorkshopChristopher FrabottaChief, Navigation BranchU.S. Army Corps of EngineersGalveston DistrictJuly 24, 2012USUS ArmyArmy CorpsCorps ofof EngineersEngineersBUILDING STRONGBUILDING STRONG

Navigation MissionProvide safe, reliable, efficient andenvironmentally sustainable waterbornetransportation systems (channels, harbors,and waterways) for movement of commerce,national security needs, and recreation.BUILDING STRONG

Galveston District Facts 50,000 sq-mile district boundary 460 miles of coastline 48 Texas Counties 18 Counties – Coastal Bay EstuariesTexas Gulf System 3 LNG 346 full time employees 760 miles shallow draft 240 miles deep draft 13 shallow draft ports 15 deep draft ports Texas Ports and Waterways moved 575M 3 Strategic PortsBUILDING STRONG

BUILDING STRONG

Tonnage for Top Ten U.S. Ports in 2010(Millions of Tons)61.556.6236.362.472.4South Louisiana, LAHouston, TXNew York, NYBeaumont, TX73.7Long Beach, CACorpus Christi, TXNew Orleans, LALos Angeles, CAHuntington, Tristate75.4227.1Texas City, TX77.0139.2BUILDING STRONG

Tonnage of Commerce – U.S. Inland WaterwaysGIWWBUILDING STRONG

Project Delivery TeamBUILDING STRONG

DREDGING METHODSTYPES OF DREDGES Mechanical Dredges Clamshell Dipper Backhoe Dragline Pipeline Dredges Cutterhead Dustpan Trailing Suction Hopper DredgeBUILDING STRONG

MechanicalDredgesMechanical DredgesClamshell Dredge with ScowDipper DredgeSource: IHC HollandBackhoe DredgeBUILDING STRONG

Clamshell DredgesClamshellDredgeSource: Great Lakes Dredge & DockSource: The Dutra GroupBUILDING STRONG

Clamshell DredgeClamshellDredgeSource: Manson Construction and Engineering Co.BUILDING STRONG

BackhoeDredgeBackhoe DredgeSource: The Dutra GroupBUILDING STRONG

DraglineDredgingDragline DredgingSource: The Dutra GroupBUILDING STRONG

Hydraulic Pipeline Dredge(Cutterhead Dredge)BUILDING STRONG

Cutterhead SuctionSuction DredgesCutterheadDredgesBUILDING STRONG

CutterheadDredgeDredge ininOperationCutterheadOperationBUILDING STRONG

TypesCutterheadsTypesofofCutterheadsBUILDING STRONG

Cutterhead withTeethCutterheadwithRockRockTeethSource: Great Lakes Dredge and Dock Co.BUILDING STRONG

CutterheadDredgeCutterhead DredgeDREDGE TEXASTEXASDREDGEIdler Barge –w/ Spud CarriageBUILDING STRONG

HydraulicPipelinePipeline DredgeHydraulicDredge(DustpanDredge)(Dustpan Dredge)BUILDING STRONG

DustpanDredge inDustpanDredgeinOperationOperationBUILDING STRONG

Trailing Suction Hopper DredgeTrailing Suction Hopper Dredge(HopperDredge)(Hopper Dredge)Source: IHC HollandBUILDING STRONG

U.S.Hopper 14.15.16.Glenn EdwardsStuyvesantWheelerLiberty IslandTerrapin IslandEssayonsBayportColumbiaNewportBE LindholmRN WeeksPadre IslandDodge IslandMcFarlandWestportAtchafalaya13,800 CY11,140 CY8,000 CY6,540 CY6,400 CY6,000 CY5,000 CY4,425 CY4,000 CY4,000 CY4,000 CY3,600 CY3,600 CY3,140 CY1,500 CY1,300 1980196719801980BUILDING STRONG

Trailing Suction Hopper DredgeTrailing Suction Hopper Dredge(HopperDredge)(Hopper Dredge)Source: IHC HollandBUILDING STRONG

HopperDredge inHopperDredgeinOperationOperationSource: Great Lakes Dredge and Dock Co.BUILDING STRONG

Split-Hull HopperSplit-HullHopperDredgeDredgeSource: Bean-Stuyvesant DredgingBUILDING STRONG

Hopper Dredge with Hydraulic Disposal DoorsBUILDING STRONG

TurtleExclusion DeviceTurtleExclusionDeviceBUILDING STRONG

Disposal MethodsDisposalMethods Mechanical Dredges Scow to Offshore Dredged Material Disposal Site (ODMDS) Mechanically hauled Pipeline Dredges Upland Confined Placement Area (CPA) Semi-Confined (Control-of-Effluent Placement) Beach Placement Scow-to-ODMDS Trailing Suction Hopper Dredge ODMDS Near-Shore Feeder Berm Pump-out Beach Placement CPA Semi-Confined, etc.BUILDING STRONG

Mechanical Dredging withScow Disposal to ODMDSBUILDING STRONG

Disposal MethodsDisposalMethods Mechanical Dredges Scow to Offshore Dredged Material Disposal Site (ODMDS) Mechanically hauled Pipeline Dredges Upland Confined Placement Area (CPA) Semi-Confined (Control-of-Effluent Placement) Beach Placement Scow-to-ODMDS Trailing Suction Hopper Dredge ODMDS Near-Shore Feeder Berm Pump-out Beach Placement CPA Semi-Confined, etc.BUILDING STRONG

Aerial of Confined Placement AreaAerial of Confined Placement annel -- LostLost LakePlacementArea) Area)BUILDING STRONG

Aerial of Confined Placement AreaAerial of Confined Placement annel -- LostLost LakePlacementArea) Area)BUILDING STRONG

Aerials of Spillway StructuresAerials of Spillway ShipChannel -- LostLost LakePlacementArea) Area)BUILDING STRONG

Interior of Confined Placement AreaInterior of Confined Placement Area(Levees&&SpillwayStructure)(LeveesSpillway Structure)BUILDING STRONG

Interior of Confined Placement AreaInterior of Confined Placement Area(Levees&&SpillwayStructure)(LeveesSpillway Structure)BUILDING STRONG

Semi-Confined Placement AreaSemi-Confined Placement Area(BolivarMarshCreationUseof DredgedMaterial)(BolivarMarshCreation– –BeneficialBeneficial Useof DredgedMaterial)BUILDING STRONG

Semi-Confined Placement AreaSemi-Confined Placement Area(BolivarMarshCreationUseof DredgedMaterial)(BolivarMarshCreation– –BeneficialBeneficial Useof DredgedMaterial)BUILDING STRONG

Semi-Confined Placement AreaSemi-Confined Placement Area(BolivarMarshCreationUseof DredgedMaterial)(BolivarMarshCreation– –BeneficialBeneficial Useof DredgedMaterial)BUILDING STRONG

Semi-Confined Placement AreaSemi-Confined Placement Area(Bolivar(BirdMarshCreationBeneficialof DredgedIslandCreation – BeneficialUseUseof DredgedMaterial)Material)BUILDING STRONG

PipelineDredgeDredge withwith BeachBeach PlacementPipelinePlacementBUILDING STRONG

PipelineDredgeDredge withwith BeachBeach PlacementPipelinePlacementBUILDING STRONG

BUILDING STRONG

Disposal MethodsDisposalMethods Mechanical Dredges Scow to Offshore Dredged Material Disposal Site (ODMDS) Mechanically hauled Pipeline Dredges Upland Confined Placement Area (CPA) Semi-Confined (Control-of-Effluent Placement) Beach Placement Scow-to-ODMDS Trailing Suction Hopper Dredge ODMDS Near-Shore Feeder Berm Pump-out Beach Placement CPA Semi-Confined, etc.BUILDING STRONG

Hopper Dredge with Pump out to BeachBUILDING STRONG

HopperDredgewith PumpHopperDredgewith outPump-outBUILDING STRONG

Beach Placement Pipeline or Hopper Pump outBUILDING STRONG

Project Delivery TeamBUILDING STRONG

BudgetTimelineBudgetCycleCycle TimelineBUILDING STRONG

QuestionsBUILDING STRONG

BUILDING STRONG

BUILDING STRONG U.S. Hopper Fleet 1. Glenn Edwards 13,800 CY 2006 2. Stuyvesant 11,140 CY 1982 3. Wheeler 8,000 CY 1981 4.

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