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2. Presentation Outline

3. Gunderboom AFB Technology Initiati on  Aquatic Filter Barrier (AFB) Initial Development 1986, Alaska : Sediment Dredging Disposal, Kachemak Bay  Applications Developed: Reservoir Protection System (RPS TM ) Beach Protection System (BPS TM ) Particulate Control System (PCS TM ) Sound Attenuation System (SAS TM ) Marine Life Exclusion System (MLES TM ) – Initial Development Started 1995 Downstream, Filtered Water at 1.5 NTU 185 NTU Water and Debris from Construction Site PCS™

4. Types of AFB Applications Developed:  Reservoir Protection System (RPS TM )  Beach Protection System (BPS TM )  Particulate Control System (PCS TM )  Sound Attenuation System (SAS TM )  Marine Life Exclusion System (MLES TM ) – Initial Development Started 1995

5. What It Is…  A Water-Permeable Barrier that Keeps Fish Eggs, Larvae and Other Organisms a Safe Distance Away From an Industrial Intake Structure  Site-Specifically Designed to Prevent Impingement and Entrainment of Ichthyoplankton and Juvenile Aquatic Life  Best Technology Available on a Site-Specific Basis (Section 316(b) Of The Clean Water Act) Technology Review I: Marine Life Exclusion System™ (MLES™)

6. Technology Review II: Marine Life Exclusion System™ (MLES™) How It Works… Surrounds the Intake Structure, Preventing Targeted Planktonic and Neustonic Organisms From Entering the CWS. Water Velocity Through the Gunderboom ® MLES™ is 0.02 fps, 95% Less Than Approved Intake Velocity. Low Water Velocity Enables Small Fish Larvae to Drift Away From the AFB. Automatic AirBurst™ Cleaning Utilizes Sensor Equipment For System and Environmental Conditions and is Controlled by SCADA System; The AirBurst™ Releases any Deposits From the Filter Material and Helps Prevent Biological Fouling.

7. Technology Review III: MLES™ Performance Specifications  Size Of Organism Excluded: All Life Stages ≥ 0.6 mm  Screen Approach Velocity: 0.02 FPS at 10 GPM/FT 2  Fouling: Minimal Susceptibility To Most Taxa  Currents: 3 Knots Demonstrated Long Term; Higher Capability  Depths: Greater Depths Optimum For Additional Filter Surface Area  Tidal/River Level Range: >8 Feet Demonstrated Long Term, Extreme Alaska Tides Demonstrated Shorter Term

8. 8 Technology Review IV: MLES™ Design Considerations  Intake Design: Available Areas & Existing Structures Utilized MLES™ Structural Requirements Addressed a Variety Of Ways  System Size – Required Filter Area Depends On: Target Size And Seasonality of Organism To Exclude Flow Requirements of Facility  AirBurst™ Cleaning and SCADA System Requirements Instrumentation For Automatic Operation Integration With Wedgewire Automatic Cleaning Real-Time Operations and Data Download Via Remote Access  Environmental Conditions TSS/Turbidity Sudden Water Level Changes Availability Of Cross-Flow Seasonality

9.  Curtain: Anchored And Floating, Sealed To Bottom And Along Shoreline  Panel: Fixed, Panelized Structure Enclosing Intake Bay Area  Cartridge: Carriage Structure Accepts MLES Cartridges, Which Supply A Reservoir Area With Filtered Water Via Individual Pipes Technology Review V: Development and MLES™ Types

10. 10  Site Requirements: 386 MGD Total Flow Seasonal (6-Month) Exclusion of Eggs and Larvae of Fish Species Up To 3-Knot Current, 3-4 Foot Tide Range, and 40-Foot Depth High Degree of Automation and Remote System Access  Results: 95% Reduction With MLES™ In Place  Developmental Improvements: Stronger Attachment Points More AirBurst™ Cleaning System Functions Zippered Filter Cells For Easier Deployment Updated Filter Materials; Fabric Industry Technology is Moving Ahead By Leaps and Bounds Technology Review VI: Successful Years On The Hudson River

11. 11 Technology Review VII: Curtain Installation and Deployme nt

12. Technology Review VIII: MLES™ Panel Design

13. Technology Review IX: Panel Installation and Operation  Individual Framed Panels  Lower Flow Applications  Integrated Into Plant Operations

14. Technology Review XI: Cartridge Intake and Array Drawing  Individual Cartridges, Self- Contained and Sealed  Each Cartridge with Two Faces, Each with Double- Layered Fabric With An Air Diffuser Between the Fabric Layers  Cartridges Designed Into An Array, Factoring In: Intake Capacity Requirements Site Characteristics  Could Be In An Intake Bay Or Independent Support Structure

15. 15 PatentsPatents Floating Containment Boom PCS Patent No. 5,102,261; Containment/ Exclusion Boom and Methods of Using the Same (MLES) Patent No. 6,485,229; Containment/ Exclusion Boom with Bird Deterrent U.S. Patent No. 6,514,010; Boom System and Its Use to Attenuate Underwater Sound Or Shock Wave Transmission Patent No. 6,567,341; Panel Anchoring System For Boom Installation U.S Patent No. 6,848,861; Boom Curtain with Zipper Connections and Method of Assembling Boom Patent No. 6,739,801; Boom Curtain with Expandable, Pleated Panels, Containment Boom Containing the same, and Use There Patent No. 6,743,367; Containment/ Exclusion Barrier System with Infuser Adaptation to Water Intake System U.S. Patent No. 6,843,924; Attachment for use With Stockpiling Barge and Method of Filtering Runoff Water There from (Gundersock) U.S Patent No. 6,857,819; Patents Pending

16. G-Weave Fabric Developments Characteristics  Newly Available Woven Geo- Textile Capable of Higher Flows than Previous  Stronger and More Durable than Traditional Filter Fabric  Lighter, and No Increase with Wet-Weight  Easily Cleaned and Maintained

17. G-Weave Fabric Developments Woven Non-woven Strength Testing Field Testing Apparatus Fabric Depictions

18. G-Weave Fabric Developments Gunderboom Testing and Results –Tensile Strength – 440 vs. > 1400 lbs.* –Sew Seam Strength – ½” from edge –Pressure Wash Durability – No Signs of Wear –Agitation – No Signs of Wear; Heat Welds Held Up –Rip Stop – 200 vs. 1150 lbs.* –Puncture Durability – No Resultant Tearing *Traditional Non-Woven vs. G-Weave Woven

19. G-Weave Fabric Developments Biological Survivability – Testing at Alden Labs  Survival of Blueback Herring eggs after exposure to the G-Weave fabric in the laboratory was high  Alden described that, “the mortality experienced in this study... may potentially reflect natural mortality”.  There was no significant difference between the survival of eggs exposed to the new G-Weave fabric, or other Gunderboom fabrics, and the control samples.

20. Anchor/Mooring System Developments and Alternatives  Pile- Supported Structures  Filter Pools  Helical Anchors

21. Buoyancy Developments  Buoyancy Analysis

22. Control System Developments –Networking Hardware – More Robust and Widely-Used Systems Available (e.g. “DeviceNet”) –Independent Components Provide More Reliable Operation; No “Christmas Tree Lights”

23. Remote Monitoring Ability – Lovett Generating Station

25. Remote Monitoring Ability – Astoria Generating Station

26. Remote Monitoring Ability – Bethlehem Energy Center

27. Gunderboom Projects – Ongoing Projects –Lovett Generating Station

28.  Lovett Generating Station 2007 Exclusion Rates “Conclusion - Calculation of ichthyoplankton exclusion rate based on seasonal paired plankton sampling and analysis yielded a 95.4% exclusion for fish larvae and 96.4% exclusion for fish eggs.” (Gunderboom, 2007) Gunderboom Projects – Ongoing Projects

29. Gunderboom Projects - Other Gunderboom Successes! –Mamaroneck, NY – Beach Protection System™ (Demonstrated in Photo Below) –Kensico, NY – Reservoir Protection System™

30. Gunderboom Projects – New Projects  New York City Waterfalls, Public Art Fund

31.  Taunton River Desalination Plant* *Gunderboom Proprietary Material For viewing by the direct Recipient only. Not to be reproduced or forwarded. Gunderboom Projects – New Projects

32. *Gunderboom Proprietary Material For viewing by the direct recipient only. Not to be reproduced or forwarded. Gunderboom Projects – New Projects  Taunton River Desalination Plant*

33.  Taunton River Desalination Plant MLES™ Gunderboom Projects – New Projects *Gunderboom Proprietary Material For viewing by the direct recipient only. Not to be reproduced or forwarded.

34. Gunderboom Projects – New Projects  Paluel – MLES™ for Coastal Nuclear Power Plant

35. Gunderboom Projects – New Projects Previous Dredging Results InsideOutside Sheen:PresentNo Sheen Turbidity:96 NTU1.5 NTU TSS:350 mg/l13 mg/l Chrysene0.36 ug/lnd(ex) HEAVY DUTY TURBIDITY BARRIER 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.”  Highlands Bridge – Sea Bright, New Jersey

36.  City of Stockton – MLES™ Delta Water Supply Project GUNDERBOOM PROJECT APPROACH Phase I – Conceptual Design and Preliminary Feasibility Study Phase II – Design Engineering Studies; Pilot Testing Phase III – Final Engineering Design Phase IV – Procurement and Fabrication Phase V – Installation and Commissioning Phase VI – Operations and Maintenance Gunderboom Projects – New Projects

37. 9401 King St., Ste A 2 White Sands Lane Anchorage, AK 99515 Scarborough, ME 04074 866-396-5100 207-883-1777 Corporate Office 9401 King St., Ste A Anchorage, AK 99515 866-396-5100 For Copy of Presentation or Questions: amccusker@gunderboom.comamccusker@gunderboom.com or jwells@gunderboom.com jwells@gunderboom.com (207) 883-1777