Sea Engineering, Inc. www.seaengineering.com

Coastal and Engineering Marine Renewable Energy Marine Environmental Studies Hydrographic and Geophysical Surveys Marine Construction and Diving

 Makai Research Pier  41-305 Kalanianaole Highway Waimanalo, Hawaii 96795 Phone: (808) 259-7966  FAX: (808) 259-8143

Sea Engineering, Inc. Company Profile

Sea Engineering, Inc., incorporated in Hawaii in 1973, provides ocean and coastal engineering, marine environmental and marine construction and diving services to private and government clients. Company principals and engineers have graduate level degrees (MS or PhD) in ocean engineering, marine geology, environmental engineering and mechanical engineering. Sea Engineering has three office locations:

Sea Engineering, Inc. Sea Engineering, Inc. Sea Engineering, Inc. Hawaii Engineering Hawaii Construction CA Engineering Makai Research Pier 863 N. Nimitz Hwy 200 Washington Street, Ste 210 Waimanalo, HI 96795 Honolulu, HI 96817 Santa Cruz, CA 95060 808-259-7966 808-536-3603 831-421-0871

Sea Engineering, Inc.'s capabilities include:

Coastal Engineering - marina and harbor design; coastal planning; beach nourishment design; planning and analysis; design and evaluation of coastal structures for erosion control, shore protection and navigation; storm inundation analyses; beach erosion and coastal processes studies.

Renewable Energy – Over a decade of experience working in the renewable energy sector. Work has included site selection and cable route surveys, , and tidal site studies, installation and planning. SEI has worked with wave energy conversion developers to assist in installation of transformer pods, anchor bases and power cables, as well as inspection and maintenance. SEI developed work plans and led logistics for the installation of the first grid-connected WEC device in the United States.

Numerical Modeling – state-of-the-science 2- and 3-dimensional hydrodynamic and transport modeling for applications including sediment transport; contaminant transport; water quality; beach response; and, discharges into marine and freshwater environments. Modeling of deepwater to nearshore wave transformation using both 2- D steady-state models (REFDIF, STWAVE) and 3-D fully non-linear Boussinesq models.

Ocean Engineering – determination of engineering oceanographic design criteria; storm wave propagation and wave-driven circulation modeling; design; measurement and analysis of , currents and other parameters for planning and design; submarine pipeline and cable route selection and conceptual design.

Marine and Aquatic Environmental Services – preparation of Environmental Assessments and Impact Statements; preparation of Federal, State and City permit applications for marine projects; measurement and analysis of sediment and contaminant transport; analysis; plume modeling; water quality monitoring; assessment of the impact of coastal facilities on the marine environment; oceanographic studies; search and recovery of hazardous materials.

Hydrographic and Geophysical Surveys – Fully automated hydrographic and geophysical survey capability including , side scan , subbottom profiling, UXO detection, and ROV surveys. Surveys tasks have included dredge monitoring and payment, dredge design, cable route reconnaissance and selection, environmental assessment, bottom mapping, object location, and sand deposit mapping.

Logistical Support – Support for oceanographic or research projects includes a fully equipped shop on the Honolulu Harbor waterfront and vessels ranging from 17 to 72 feet long.

 Makai Research Pier  41-305 Kalanianaole Highway Waimanalo, Hawaii 96795 Phone: (808) 259-7966  FAX: (808) 259-8143 www.seaengineering.com

Sea Engineering, Inc. Company Profile

Engineering Diving Services – structural condition inspections and documentation, pipeline and cable route surveys.

Marine Construction Services – fully equipped locker to provide diving services in support of the construction and repair of pipelines, wharves, cable landings, breakwaters, offshore oil moorings, and other coastal and offshore marine facilities. Repair and construction of waterfront structures, including wharves, piers, intakes, small boat ramps and other structures.

Sea Engineering, Inc. has worked throughout the Pacific, including California, the major Hawaiian Islands, Alaska, Guam, the Northern Mariana Islands, American Samoa, the Marshall Islands, the Federated States of Micronesia, the Society Islands, Malaysia, and Indonesia. Projects have included aquatic environmental services; conceptual planning and design of coastal resort features; planning and design for harbors and port facilities; coastal processes investigations and designs for shore protection and erosion control projects; oceanographic analysis and design studies for wastewater outfall construction; detailed inspection and diving construction services for numerous outfalls and pipelines.

Modern oceanographic instrumentation and physical resources include sediment measuring and monitoring equipment, oceanographic measuring and monitoring equipment; surveying, navigation and positioning equipment; a complete dive locker with both scuba and heavy gear capability; and workboats. Specific equipment includes:

• Cutting edge Acoustic Doppler Current Profiling technology for full water column profiling • Various single point 3-Axis acoustic Doppler Velocimeters and Wave Meters • Sedflume technology for state-of-the-art sediment stability analysis • gauges, thermistor strings, conductivity recorders and optical water quality sensors • Trimble differential survey system with real-time sub-meter accuracy and a digital survey fathometer • State-of-the-art sub-bottom profiler • Sector-scanning and swath-profiling for sediment surface morphologic characterizations, time series change analysis, and bedform transport rate analysis • Variety of seafloor instrumentation platforms and deployment vehicles • Outland 1000 ROV

In-house computer capability includes numerous numerical models for sediment and contaminant transport studies, water quality studies, and design and assessment of coastal facilities, including:

• 1, 2, and 3-dimensional hydrodynamic circulation in rivers, lakes, estuaries, and coastal ocean • Erosion, transport, and deposition of fine- and coarse-grained sediments • Transport and fate of contaminants • Turbidity transport and dispersion • Outfall discharge plume initial dilution, secondary transport and mixing, and water quality impact prediction • Storm wind and wave field analysis, wave transformation from deepwater to shore, and wave breaking • Coastal structure design • Global wave forecast and hindcast models

 Makai Research Pier  41-305 Kalanianaole Highway Waimanalo, Hawaii 96795 Phone: (808) 259-7966  FAX: (808) 259-8143 www.seaengineering.com

Sea Engineering, Inc.

Vessels

 Makai Research Pier  41-305 Kalanianaole Highway Waimanalo, Hawaii 96795 Phone: (808) 259-7966  FAX: (808) 259-8143 www.seaengineering.com Sea Engineering, Inc. Vessels

Huki Pau – Honolulu, HI. The ‘Huki Pau’ is a 74-foot Aluminum twin-screw workboat set up to support diving, marine construction and engineering operations throughout the Hawaiian Islands. The vessel has a large open well-deck, 120,000 Lb. Payload Capacity, 5 Ton crane, and built-in diving stations with capability.

Specifications LOA: 74’-0” Beam: 21’-0” Draft/Light: 4’-3” Hull: Aluminum Cargo Capacity: 120,000 lbs. Open Foredeck: 43’ x 17’ Open Afterdeck: 8’ x 19’, with swim step

Propulsion Engines: Twin GM-12V71 Marine Diesels Fuel: 950 Gallons Cruising Speed: 9 knots Safety Range: 450 nautical miles Zodiac 4 Man Life Raft 2 X 12 Man Life Floats Notable Facilities/Equipment EPIRB Flares Two built-in dive stations with Quincy 390 compressor Life jackets and built-in Nitrox capability High water level alarm Air conditioned wheelhouse and 204 sq. ft. Deckhouse Halon system in engine Hydraulic System: 62 gpm, 3000psi compartment Operable bow ramp Bilge pumps (2 each Pacer Four-point mooring system hydraulic) (4 ea. Keypower winches, 4 ea. 1000 lb. anchors) Hydra Pro 5-Ton Crane, certified Electronics Aurora 500gpm fire pump Furuno Depth Sounder Furuno 1650 DGPS Accommodations VHF Three crew berths Autopilot Full Galley Mathers Controls with Remote Enclosed head and shower steering

Sea Engineering, Inc. Vessels

Huki Pono – Honolulu, HI. The Huki Pono is a 43-foot twin screw workboat set up to support diving and marine survey operations in the Hawaiian Islands. The vessel has two steering stations and a large, air- conditioned deckhouse ideal for use as a support center for survey or ROV operations. Specifications LOA: 43’-0” Beam: 14’-0” Draft/Light: 4’-3” Hull: Fiberglass, semi- displacement, hard chine Manufacturer: Delta Marine, Seattle, WA. Steering Stations: Two (Wheelhouse and back deck) Open Aft Deck: 180 sq ft.

Propulsion Engine(s): Twin Caterpillar 3208 T marine diesels, 330 hp/ea. Safety Fuel: 500 Gallons DBC 8 Man SOLAS life raft Cruising Speed: 12 knots EPIRB Range: 400 nautical miles Flares

Life Jackets Notable Facilities/Equipment High water level alarm Halon system in engine Air conditioned wheelhouse and 110 sq. ft. Deckhouse compartment 18 kW generator Pacer hydraulic bilge pump Hydraulic System: 25 gpm, 2500 psi, quick disconnect, ports on deck for winches and equipment Articulating stern A-frame (2,000 lb. capacity) with Electronics 4000 lb. winch Furuno Depth Sounder Stern swim step Furuno 1650 DGPS VHF Accommodations Mathers Controls

Four single berths forward Refrigerator and microwave oven Enclosed head 75 gallons potable water

Sea Engineering, Inc. Vessels

Salvor – Alameda, CA. The Salvor is an 85-foot self-propelled working platform that supports diving and marine construction operations in and around the San Francisco Bay (CA) area. LOA: 85’-0” x 22’ beam Twin 500 hp diesel jet drives A-frame – 26,000 lb. capacity

Huki Wana – Alameda, CA. LOA: 32’-0” 1000 lb. winch and boom Furuno Depth Sounder GPS Trailerable

30’ Transporter – Honolulu, HI. LOA: 30’-0” x 10’ beam 6000 lb. cargo capacity Towing Bit Trailerable GPS/Depth Sounder

BobR – Honolulu, HI. The BobR is a 30 ft commerical grade Boston Whaler setup for survey and marine operations. The vessel has a large secure wheelhouse and large aft deck providing a flexible working platform throughout the Hawaiian Islands. LOA: 29’-10” Twin 225 hp Towing Bit Diver Door

Sea Engineering, Inc. Vessels

Response and Recovery Alameda, CA. Response and Recovery are 25-ft sister workboats setup to support diving, marine construction and surveying operations. The vessels have large secure deckhouses ideal for use as support centers for survey or ROV operations. LOA: 25’-0” 18 kW generator

25’ Whaler – Honolulu, HI. LOA: 25’-0” Towing Bit Trailerable GPS Fathometer

Ambar – Honolulu, HI. LOA: 23’-0” Aluminum RIB 300 hp Towing Bit Trailerable GPS / Fathometer

22’ Whaler – Honolulu, HI LOA” 22’0 Twin 90 hp” ADDITIONAL VESSELS Towing Bit Diver Door 17’ Whaler – Honolulu, HI 17’ Whaler, “Wombat” – Alameda, CA 12’ Livingston, “Elle” – Alameda, CA

Sea Engineering, Inc.

Representative Projects

 Makai Research Pier  41-305 Kalanianaole Highway Waimanalo, Hawaii 96795 Phone: (808) 259-7966  FAX: (808) 259-8143 www.seaengineering.com

PROJECT: CHARACTERIZATION OF SEDIMENT TRANSPORT IN THE VICINITY OF WIND FARMS CLIENT: SANDIA NATIONAL LABORATORIES

Santa Cruz, California

Sea Engineering, Inc. (SEI) is assisting Sandia National Laboratories (SNL) in developing methods to evaluate sediment transport patterns in nearshore coastal regions due to the presence of wind turbines. The objective was to develop a methodology to estimate a risk of sediment mobilization and scour based on hydrodynamic conditions (waves and currents) at a particular site. The end result is a quantitative method for comparing the effects on local physical processes due to the presence of wind turbines.

Specifically, to evaluate the sediment assessment methodology, information for a demonstration site in Santa Cruz, CA was pulled together into an analysis to assess spatial patterns of likely sediment erosion, deposition, and transport during typical and extreme conditions present at the site. The sediment transport assessment methodology can be used to supplement the understanding of the behavior of sediment transport and effects on the due to the installation of wind turbine arrays offshore.

Modeled wave heights with the inclusion of a wind turbine array.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: WAVE ENERGY CONVERSION (WEC) BUOY CLIENT: OCEAN POWER TECHNOLOGIES

Marine Corps Base Hawaii, Kaneohe, Hawaii

Ocean Power Technologies, Inc. developed a Wave Energy Conversion (WEC) buoy that underwent initial proof of concept testing in New Jersey. The Office of Naval Research has funded a test installation of three buoys in 100 feet of water off North Beach at the Marine Corps Base in Kaneohe, Hawaii. SEI has successfully installed 3 buoy generations at the project site. Power generated by the WEC device is transmitted to shore by a 3,400-foot long, 3-inch diameter, double armored electrical cable. Since the project inception in 2001 Sea Engineering has been providing engineering and diving services for the project including:

Engineering Services - Site selection and cable route surveys (bathymetry, side- scan, sub-bottom and diving) - Logistics, installation planning and engineering - Control room inspection and maintenance Shop and Fabrication Services Offshore Services - WEC device, node, power cable, anchor and mooring installation, inspection and maintenance - Vessels and diving personnel for offshore operations

Notable accomplishments have included installation of the Transformer pod, electrical cable, and 100 ton anchor bases and for the first time in the United States successful connection SEI engineer’s and welder on OPT Wave of a wave energy conversion device to grid. Energy Conversion Device

Wave buoy in place SEI diver injecting epoxy into buoy’s anchor base

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: OCEANLINX WAVE STUDY CLIENT: OCEANLINX

Peahi, Maui, Hawaii

Oceanlinx, an international renewable energy company is working with the Maui Electric Company to provide 2.7MW of wave energy along the northern coast of Maui near Peahi. In order to develop understanding of the wave climate affecting their potential site, Oceanlinx contracted Sea Engineering to provide a three-monthy deployment of two ADCPs in 30m and 40m water depths respectively.

Additionally, Sea Engineering provided a 10-year hindcast of wave conditions obtained from a nested spectral wave model that included 1) deep water Wavewatch III Global and Hawaii domains, and 2) a nearshore SWAN model for the Maui domain. Data obtained from the ADCP's were used to validate the numerical model hindcast.

Pacific Basin Hawaiian Islands Island of Maui Vicinity

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: KAHULUI HARBOR WAVE SURGE MEASUREMENT CLIENT: HAWAII SUPERFERRY

Maui, Hawaii

Following a series of large wave events that damaged the Hawaii Superferry mooring barge in Kahului Harbor, Sea Engineering was contracted by the operators to provide timely forecasts of wave conditions in the vicinity of the harbor, and to develop a system to measure harbor surge at the mooring barge location. The forecasts and surge measurements were used to decide if conditions in the harbor permitted safe operation. he surge data was correlated with crew operational observations, wave buoy measurements, and numerical wave model forecast output to develop an accurate forecast system for operational harbor conditions. Sea Engineering received the “2009 ASCE Best Small Project Award” for this work.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: HAWAII ENERGY RESOURCE ASSESSMENT CLIENT: HAWAIIAN ELECTRIC COMPANY (HECO)

Hawaiian Islands

Sea Engineering, Inc. (SEI) was contracted by Hawaiian Electric Company, Inc. (HECO) to assess the feasibility of utilizing the ocean currents around the Hawaiian Islands as a renewable energy resource. The study had three primary objectives: an evaluation of the ocean current resources, an assessment of the present state of underwater turbine development, and determination of the potential applicability of that technology to the resource in Hawaii. The geographic area covered included the waters around the main Hawaiian Islands (with the exception of Kauai) out to approximately the 2,000 m depth contour. A state-of-the- art tidal circulation model developed by the University of Hawaii (UH) was applied to provide a comprehensive assessment of the tidal current speeds. Model results were validated by comparing the results with existing current meter records from various locations around Oahu, Maui, Molokai and the Big Island, including most of the headlands and points known for strong currents.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: GOLDEN GATE TIDAL POWER GENERATION STUDY CLIENT: BLACK AND VEATCH

San Francisco, California

Sea Engineering, Inc. deployed two bottom-mounted (upward-looking) Acoustic Doppler Current Profilers (ADCPs) in proximity to the Golden Gate entrance of San Francisco Bay, California, USA. The objective was to collect current data to validate modeling efforts for a tidal power generation study. The ADCPs were deployed at 40 meter depth and 60 meter depth for a period of one month, to measure current velocity data in the water column that encompassed the monthly range of tidal currents. The instruments were mounted inside submerged buoys that were anchored to the seafloor. This deployment scheme ensured the ADCPs remained nearly vertical and eliminated the potential of deploying a tripod on an uneven seafloor.

In addition, cross-channel transects were navigated with a vessel-mounted (down- ward looking) ADCP during the spring tidal cycles. The objective was to measure the cross-channel current dynamics for the largest expected currents. Four transects were navigated: One was immediately west of the Golden Gate Bridge, measuring current dynamics within the narrowest portion of the gate; Three were east of the bridge, in close proximity to a raised submarine sill. The three transects measured current velocity changes that might be caused by the existence of the sill (e.g. speed increases around the perimeter due to funneling).

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: WAIKIKI BEACH WAR MEMORIAL NATATORIUM IMPROVEMENTS CLIENT: WIL CHEE – PLANNING, CITY & COUNTY OF HONOLULU

Honolulu, Hawaii 2010

The current project is follow-up work resulting from SEI’s Natatorium Shoreline Restoration Study completed in 2008. The City’s advisory panel selected the conceptual design produced by SEI to be the preferred alternative for beach restoration in the upcoming EIS. The purpose of this study is to perform an oceanographic study of the project area and accomplish preliminary design of the beach and stabilizing structures in support of the EIS. Key components include wave, current, and circulation field studies and modeling; sand source investigation; preliminary demolition plan; groin and beach design; preliminary construction plans; and discussion of potential impacts.

BOUSS2D Model Results: Prevailing wave pattern approaching the Natatorium

Expected wave pattern for conceptual design 2b

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: TESORO PIPELINE STABILIZATION STUDY CLIENT: TESORO HAWAII CORPORATION

Barbers Point, Oahu

Tesoro Hawaii Corporation operates three oil delivery pipelines at Barbers Point, Oahu that are critical for the State’s energy supply. The largest pipeline (30-inch) moved over 140 feet during Hurricane Iwa in 1982, and the stability of all the pipelines during extreme hurricane events was questionable. SEI conducted a comprehensive pipeline stability analysis for all three pipelines. The study included pipeline layout and bottom substrate mapping by divers, as well as extensive hurricane wave field modeling. Time-dependant numerical models were completed for six Category 5 hurricanes of various sizes and approach directions, as well as a hindcast model of Hurricane Iwa. Hurricane wind fields were input into WaveWatch III and SWAN numerical wave generation and propagation models, and a time series of wave heights along the pipeline alignments produced. Analytical methods were then used to calculate longshore current and wave on the pipelines. Surprisingly, Hurricane Iwa produced the second highest wave forces, in part because of its high angle of approach. The results will be used to design improved anchoring for the Tesoro pipelines. Hurricane Iwa Wind Model

Tesoro Pipeline Anchor Blocks Wave Heights Calculated for Hurricane Iwa

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: KAUMALAPAU HARBOR BREAKWATER REPAIR CLIENT: USCOE, HONOLULU DISTRICT, HAWAII DOT

Lanai, Hawaii 2008

Sea Engineering completed detailed engineering design and construction plans and specifications for a complete re-building of the Kaumalapau Harbor breakwater. The project was awarded the "2008 ASCE Hawaii Outstanding Civil Engineering Achievement Award". This is a significant coastal structure, with a construction cost of $28 million. Design work included a multi-beam hydrographic survey to precisely determine the existing bottom configuration, evaluation of design wave conditions, and hydraulic model studies of breakwater stability. The repair design utilizes 35-ton Core-Loc concrete armor units, the largest unit of this type in the world to-date. SEI’s work also included preparation and coordination of an environmental assessment, and Federal and State permit applications. Environmental coordination included Fish and Wildlife Coordination Act requirements; Endangered Species Act, Section 7 consultation; Clean Water Act, Section 404 evaluation; National Historic Preservation Act coordination; Clean Water Act, Section 401 Water Quality Certification; and Coastal Zone Management Consistency Certification.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: KAUMALAPAU AS-BUILT MULTIBEAM SURVEY CLIENT: USCOE HONOLULU DISTRICT

Kaumalapau Harbor, Lanai, Hawaii

The new Kaumalapau Harbor Breakwater on the island of Lanai was designed by Sea Engineering and built with 35-ton Core-Loc armor units, the largest ones ever used. The USACE- Honolulu District contracted SEI to conduct a precise multi-beam hydrographic survey to determine the as-built configuration of the new breakwater. The high resolution Reson 8125 multibeam system used for the survey produced imagery capable of resolving the positions and attitudes of individual coreloc armor units.

Kaumalapau Harbor Breakwater Survey: Plan view and (inset) point cloud image

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: GRAYS BEACH RESTORATION PROJECT CLIENT: KYO-YA HOTELS & RESORTS, LP

Waikiki, Honolulu, Hawaii 2010

Gray’s Beach, named after the operator of a 1920s boardinghouse located on the shoreline, is located in the middle of Waikiki Beach in the vicinity of the Sheraton Waikiki Hotel. Seawalls, including one fronting the Sheraton, were constructed along the Waikiki shoreline in the early 1900s, and these contributed significantly to the loss of sand beach along the shore. Over the past 80 years attempts have been made to restore the beach by importing sand, however 98% of the sand imported to nourish the beach cannot be accounted for today. The shoreline fronting the Sheraton is a microcosm of Waikiki Beach. The shoreline is a seawall, fronted by a narrow band of sand, which comes and goes and is typically underwater at high tide. The owners of the Sheraton Waikiki wish to restore the beach, for the use of hotel quests as well as the general public.

Sea Engineering, Inc. has been retained to investigate beach alternatives, conduct design studies, prepare a NEPA EIS, and prepare permit applications for the restoration of Gray’s Beach. The preliminary project plan would span approximately 500 linear feet of shoreline west of the existing Royal Hawaiian Hotel groin, and would include sand fill to create about 38,000 square feet of beach area 75 feet wide, with three new T-head groin structures used to stabilize and retain the sand fill.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: MADAGASCAR SITHE EAST AFRICA CABLE SYSTEM ROUTE SURVEY CLIENT: FUGRO SEAFLOOR SURVEYS

Toliary, Madagascar

Fugro Seafloor Surveys, Inc. subcontracted Sea Engineering, Inc. to conduct the inshore portions of the route surveys at Toliary, Madagascar for the Sithe East Africa telecommunication cable. The inshore survey included small boat, diver and landing site surveys. The beach landing topographic survey extended 1.2 km from the shoreline across large barchan sand to the beach manhole location. survey was conducted along the proposed route from 0 meters (MLLW) to approximately 4 meters water depth. The small boat survey included single beam bathymetry, sub-bottom, magnetometer and side scan sonar surveys within a corridor width of 500 meters in water depths less than 50 meters. Geologic Interpretation of Survey Area

Sub-Bottom Profiler Data along the Route Centerline

Land Topographic Survey on Barchan

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: APRA HARBOR CURRENT AND DREDGING PLUME STUDY FOR PROPOSED CVN BERTHING CLIENT: TEC, INC.

Apra Harbor, Guam

In support of a Habitat Equivalency Analysis to support proposed berthing and maneuvering of CVN class vessels, Sea Engineering was responsible for completing a current measurement and dredging suspended sediment modeling study to assess possible dredging impacts. Specific project work tasks included the following: • Current Measurement - SEI deployed a total of seven ADCPs to record currents throughout the project area and areas possibly impacted by the project. The deployment period was from November 1, 2007 to February 1, 2008 with the intent of capturing variable wind conditions during the transitional fall weather months of September to December, as well as typical trade wind conditions.

• Water quality and Velocities [Time 1.625] sediment sampling - Water 0 .2747 0.40 (m/s) quality profiling and Layer: 10 sediment sampling were conducted as part of the field activities. • Numerical Modeling - An EPA approved, state-of-the- art, three dimensional hydrodynamic model - EFDC - was applied to Apra Harbor. The model is 3- dimensional, which allows for variations in water properties and currents at

different depths; it computes suspended sediment transport and deposition; and it allows input of variable suspended sediment load size distributions and . The model was calibrated with data collected in the current measurement program. Measured Suspended sediment transport, settling and Model deposition was computed. Twenty modeling case studies were completed, bracketing a range of possible dredge locations; dredging plume suspended sediment grain size distribution, and initial size and ; winds – tradewinds, calm; tides – spring, neap, tide phase; and dredging operational intervals.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: SAND ISLAND REAL TIME MONITORING CLIENT: CITY & COUNTY OF HONOLULU

Honolulu, Oahu, Hawaii

The Sand Island Real Time Monitoring project was an extension to the Sand Island Ultraviolet Disinfection Study, conducted by Sea Engineering. The Real Time Monitoring project was developed to establish a real time ceanographic monitoring system located between the Sand Island Outfall and the highly used Ala Moana/Waikiki areas. Unlike standard oceanographic studies, Where data is collected over discrete periods of time and then downloaded and analyzed at the end of the study, the monitoring project collected data within the water column and transferred data via radio as it was being measured. The real time data allowed SEI and the C&C to monitor oceanographic parameters that may indicate presence of the outfall plume. SEI utilized an automated buoy system developed by Brooke Ocean Technology which included instrumentation to measure conductivity (salinity), , depth, turbidity and fluorescence. In addition, SEI installed an ADCP on the mooring buoy which provided real time current speeds and directions at the project site. As part of the project SEI partnered with UH which owns and operates the Kilo Nalu Observatory located offshore of the Kakaako Waterfront Park. The observatory, which has been in operation since July 2004, has a suite of shore-cabled instrumentation to measure waves, currents, tides, instrumentation to measure inshore water quality parameters and a Brooke Ocean Profiling system in shallower waters. This partnership allowed SEI to utilize UH’s array of instrumentation as well as a shoreline station to receive the offshore data. Data analysis was completed using Matlab scripts which plotted and analyzed the data. Results were provided to the C&C via a near- real-time web accessible site to allow C&C personnel to assess water quality conditions in the vicinity of the Sand Island Outfall and Waikiki shoreline.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: PORT ROYAL EMERGENCY RESTORATION SERVICES CLIENT: AECOM

Honolulu, Oahu, Hawaii

In February of 2009 the USS Port Royal ran aground on a offshore of the Honolulu Airport reef runway. Shortly following, Sea Engineering, Inc. (SEI) was contracted by AECOM to conduct assessment, mitigation and repair of reef damage created by the grounding. Damage assessment was completed using SEI’s 43-ft Huki Pono and included a geo- referenced diver survey. Reef restoration operations were conducted 7-days a week on-board SEI’s 74-ft landing craft, the Huki Pau. Work tasks included systematic search of 100% of the bottom in the project location, locating and collecting coral fragments, reattachment of viable coral fragments, and detailed reporting of results. Daily dive operations were conducted with an 18 person crew consisting of navigation engineers, diver biologists, surface supplied air divers, support laborers, and boat crew. During the 10-week operation, over 5,000 corals were successfully salvaged and reattached to the seafloor.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: SPENCER BEACH FIBER OPTIC CABLE LANDING – HONOTUA CABLE NETWORK CLIENT: MS DIVERSIFIED, LTD.

Spencer Beach, Hawaii

Sea Engineering, Inc. provided logistics and personnel support as well as equipment for the nearshore segment of the Spencer Beach Fiber Optic Cable Landing, part of the Honotua Fiber Optic Cable Network. Work was conducted between the lower beach face of Spencer Beach and the 100-ft water depth. Tasks included pre-lay, intermediate and final project dive surveys as well as cable landing support, cable manipulation and burial. Pre-lay survey work included occupying and visually inspecting the proposed cable route for obstructions and potential environmental impacts. In addition, a leadcore line was placed along the desired route, ensuring an environmentally suitable path around the shallow coral heads. The proposed route position was documented using SEI’s diver towed dGPS buoy system. Cable landing support was completed utilizing SEI’s 27-ft Boston Whaler, “BobR”, as well as additional vessels of opportunity. SEI’s landing responsibilities included logistical support and coordination between shore-end teams and offshore vessels and personnel, as well as landing the cable to shore and making final cable position adjustments before placing the cable on the seafloor. Intermediate and final project dive surveys were conducted to verify that no negative environmental impacts had occurred and ensure that the cable was installed as specified by the permit requirements. The final as-laid position of the cable was documented using SEI’s diver towed dGPS system and submitted to the client as a route position list and georeferenced drawing.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: KILO WHARF DREDGING MONITORING CLIENT: TEC, INC.

Apra Harbor, Guam

A key factor determining dredging impacts is the amount and nature of suspended sediments introduced into the water during dredging, and how those suspended sediments are transported and deposited on the seafloor. Sea Engineering was contracted to conduct a field monitoring study focused on measuring and characterizing the sediment introduced into the water during dredging at Kilo Wharf, Guam. The field study included the following: • CTD-turbidity casts at the dredge source, and along transects within the project area. • Water sampling at the dredge source, and at selected stations within the project area. The water samples were analyzed for total suspended solids (TSS) • A boat-mounted acoustic doppler current profiler (ADCP) survey to measure currents and acoustic backscatter along survey lines run throughout the dredge area. • In-situ, continuous measurements at two stations using bottom-mounted ADCPs and Wetlabs turbidity sensors. ADCP measured backscatter was correlated with water sample TSS analyses to allow near instantaneous mapping of the dredge plume.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871

PROJECT: DREDGING SEDIMENT TRANSPORT MODEL DEVELOPMENT OF LTFATE CLIENT: SANDIA NATIONAL LABORATORIES

Santa Cruz, CA

Sea Engineering, Inc. (SEI) is assisting Sandia National Laboratories (SNL) staff in developed state of the art field and modeling tools into a new version of the USACE LTFATE dredging model. The LTFATE model meshes hydrodynamic and sediment transport modeling to predict the long-term fate of dredge material disposal mounds. The new version being developed is based on field measured sediment stability data (Sedflume) and state of the art modeling techniques which utilize the data (SEDZLJ). Field verifications of the model have been conducted and the model is currently being implemented on multiple projects in conjunction with SNL.

SEI personnel has unique capability in both application of the Sedflume to characterize in-situ dredge material, but also in applying the numerical modeling techniques utilizing this data. The models have been used to evaluate practical engineering and environmental concerns associated with dredge disposal sites in coastal and estuarine environments.

Sea Engineering, Inc. www.seaengineering.com

41-305 Kalanianaole Hwy 863 N. Nimitz Hwy 200 Washington Street, Honolulu, HI 96795 Honolulu, HI 96795 Suite 210 (808) 259-7966 (808) 536-33603 Santa Cruz, CA 95060 (831) 421-0871