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TECHNOLOGY OVERVIEW The Aquatic Filter Barrier: Demonstrating Versatility and Effectiveness US ARMY CORPS OF ENGINEERS MOBILE, AL January 25, 2011.

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Presentation on theme: "TECHNOLOGY OVERVIEW The Aquatic Filter Barrier: Demonstrating Versatility and Effectiveness US ARMY CORPS OF ENGINEERS MOBILE, AL January 25, 2011."— Presentation transcript:

1 TECHNOLOGY OVERVIEW The Aquatic Filter Barrier: Demonstrating Versatility and Effectiveness US ARMY CORPS OF ENGINEERS MOBILE, AL January 25, 2011

2 Overview of the Technology What sets us apart Designed to work for the application Bottom seal especially Adjustable Anchors or pile supported Can focus on turbidity, TSS, contaminants, solids movement Examples of projects and applications BMP

3 OVERVIEW OF THE TECHNOLOGY Origination, System Types and Components

4 Technology Origination 1986, Alaska Aquatic Filter Barrier (AFB) Sediment Dredging Disposal, Kachemak Bay Establishment of Gunderboom for engineered solutions

5 Types of System Applications Reservoir Protection System™ (RPS) Beach Protection System™ (BPS) Particulate Control System™ (PCS) Contaminated Particulate Control System (CPCS) Sound Attenuation System™ (SAS) Marine Life Exclusion System™ (MLES) Subsurface Oil Containment System (SOC)

6 Reservoir Protection System TM (RPS) Kensico RPS; Westchester County, NY Achieves successful reductions for drinking water: TSS – 93%, Turbidity – 96%, Coliforms – 99%

7 Beach Protection System TM (BPS) Harbor Island Beach BPS; Mamaroneck, NY Keeps beaches open all season long. Protects swimming areas from waterborne health hazards and creates safe recreational beaches and shores.

8 RESULTSINSIDEOUTSIDE Sheen:PresentNot Present Turbidity:96 NTU1.5 NTU TSS:350 mg/l13 mg/l Chrysene:0.36 µg/lND (ex) Particulate Control System TM (PCS) Excavation with Clam Shell

9 Sound Attenuation System TM (SAS) Designed to mitigate the damaging effects of sound and pressure waves produced by underwater construction and demolition activities. Oakland Bay, CA: Concussive force of driving 8- ft.-dia. piles deleterious to fish populations. Seneca Lake, NY: Testing new technology to mitigate noise from offshore drilling platforms.

10 Marine Life Exclusion System TM (MLES) Hudson River, NY Site-specifically designed to prevent impingement and entrainment of ichthyoplankton and juvenile aquatic and marine life. Best Technology Available; site-specific basis (section 316(b) of the Clean Water Act). Through-velocity is 0.02 fps, 95% less than approved intake velocity.

11 MLES Types

12 OVERVIEW OF THE TECHNOLOGY Origination, System Types and Components

13 Geotextiles, Fine Mesh Grids and Knotless Netting Nonwoven GB4508Nonwoven GB4508, Perforated Woven GWeave; 0.425 mm AOS Supplier 2: 0.25-in KnotlessSupplier 1: 0.25-in KnotlessFine Mesh Grid; 1.0, 2.0, or 5.0 mm

14 AFB Framework A load-bearing skeleton of Nylon webbing supports the barrier under heavy loading due to ambient currents and intake flows.

15 AFB Framework 20,000-lb. Dyneema Netting Supports Filter Throughout Load-Bearing Skeleton and Connection Points

16 AFB Anchoring Helical Anchors – Small FootprintNavy Anchors – Heavy Loading

17 MLES AirBurst Cleaning System Compressed Air DeliveryAutomated AirBurst Cleaning

18 PROJECTS AND DEVELOPMENTS An Overview and Update of Demonstrated Applications

19 Highland Avenue Bridge, NJ Demolition/Construction Turbidity Barrier Gunderboom Now: Where We Are Today HEAVY DUTY TURBIDITY BARRIER Demolition/Construction on Tidal River Specification: “A. Silt/turbidity barrier shall consist of heavy duty non-woven skirt, flotation elements, PVC coated reinforced vinyl debris boom, top tension cable and bottom chain ballast or other anchorage system which will not obstruct navigation. B. Barrier shall be full-height, extending from the water surface to the river bottom. The height will depend on the alignment of turbidity barrier and the bathymetric contours along that alignment. C. Non-woven skirt shall be comprised of 100% polypropylene filaments, needle punched and heat set.” “Gunderboom or equivalent”

20 Gunderboom Now: Where We Are Today Hydrocarbon Remediation Site Leachate Containment In Historical Canal

21 New York City Waterfalls Floating Intake Filter Pools Gunderboom Now: Where We Are Today

22 Montana Mines Settling Pond Outfall Solids and Chemical Control

23 Designed to work for the application Bottom seal Adjustable/Re-Usable/Durable Can design for focus on turbidity, TSS, contaminants, solids movement WHAT SETS GUNDERBOOM SYSTEMS APART FROM OTHERS

24 What sets Gunderboom Aquatic Barrier Systems apart Only Gunderboom Provides a Patented Bottom Seal

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26 What sets Gunderboom Aquatic Barrier Systems apart from “Others”? Engineered and Designed and designed to work for a specific application

27 What sets Gunderboom Aquatic Barrier Systems apart from “Others”? While designed site-specific, available options can be applied which make them adjustable and re-usable for like projects

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29 TECHNOLOGY OVERVIEW The Aquatic Filter Barrier: Demonstrating Versatility and Effectiveness US ARMY CORPS OF ENGINEERS MOBILE, AL January 25, 2011

30 New York City Waterfalls IFP Systems; 2008  42,000 gpm total intake flow through floating Intake Filter Pools (IFP’s)  Designed specifically for unique application where bottom seal system not feasible  4 IFP’s in East River and NY Harbor with >9 fps current bi-directional flow, waves and significant boat wakes  Utilized 0.425 mm WOVEN fabric (G- Weave)  No AirBurst™ cleaning; with GWeave fabric in the composite, flow rates are higher and the fabric does not retain sediment particles  Monitoring integrity of filter fabric only by weekly inspection program, no biological sampling

31 Nuclear Power Plant, Coastal France  2,536,000 gpm through two intakes, 1000 ft offshore  Primary target for exclusion is vegetal debris but system will also exclude larger fish larvae and juveniles  Gunderboom MLES as an adaptable technology  Determined initial feasibility and now engaged in design level for final decision-making  Includes physical modeling of candidate fabrics for exclusion effectiveness, clogging, head loss  Includes CFD modeling for “bull nose” sheet pile end walls to blunt and train water currents  Present phase to be completed this summer


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