Page 30: of Marine Technology Magazine (June 2006)

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Gregg Drilling & Testing, Inc. 2726 Walnut Avenue, Signal Hill, CA 90755

Tel: 562-427-6899; Fax: 562-427-3314

E-mail: [email protected]

Internet: www.greggdrilling.com

President: John M. Gregg

Vice President: Patrick Keating

Director of Marketing and Business Development: Tim Boyd variety of standard and specialized marine products and systems includ- ing side scan sonar, sub-bottom pro- filing and combined, integrated and modular imaging systems for deep towed, AUV, ROV and other applica- tions. It sells and supports its prod- ucts and systems to commercial, insti- tutional and military customers on an international basis and is considered a leader in its field. EdgeTech Marine employs over 50 people and currently operates out of two facilities within the U.S.; in Massachusetts and

Florida.

Technology Profile

EdgeTech develops a variety of high end marine products by utilizing and enhancing a set of core technologies, which includes, but is not limited to,

Full Spectrum Chirp Processing,

MultiPulse Technology, Dynamically

Focused Arrays, Synthetic Aperture

Sonar (SAS), Bathymetry, Telemetry,

Modular Design, Compact & Low

Power Electronics and Application

Customization. Most recently

EdgeTech has used this technology set to introduce a new high frequency 300/600 kHz option for its 4200-FS

Dual Mode Side Scan Sonar System and portable topside processors for many of their systems to allow for more versatility and use in smaller ships or when portability is required.

In addition to EdgeTech's standard system offerings, they also develop specialized systems for users based upon their special applications and requirements. Some recent examples of such systems are a Wideband

Acoustic Mapping System (WAMS) designed for Woods Hole

Oceanographic Institution (WHOI),

Edge Tech's latest technology - Buried Object Scanning

Sonar (BOSS) System - which is currently under develop- ment with Florida Atlantic University for the U.S. Navy.

Gregg Drilling & Testing, Inc. and Gregg In Situ, Inc. offers a wide range of environmental drilling, geotechnical drilling and cone penetration testing (CPT) services for site investigation and remediation. On or off-shore, our experienced per- sonnel and extensive resources allow us to solve the most complex technical problems and save time and money, without sacrificing quality.

Services Include: Offshore drilling using jack-up boats, barges or Gregg's drill boat (the Quin Delta)/ Sediment/soil sam- pling and continuous coring/ Cone penetration testing (CPT) services/ Offshore foundation and liquefaction services/Vibracore

Gregg Marine Services offers offshore drilling, sediment sampling, and cone penetration testing (CPT) services.

The drill ship Quin Delta is a self-propelled ocean going vessel with a draft of only three ft. This allows for offshore drilling in a wide range of locations, from deep waters, to harbors, rivers and shallow inland locations. The Quin Delta is equipped with 80-ft. spuds which can be used for stable anchoring in waters up to 70-ft. deep.

The Quin Delta is ideally suited for offshore foundation and liquefaction studies, soil sampling and coring, and for estab- lishing baseline conditions and material quantities for dredging programs.

CPT soundings can be completed using either a conventional CPT system deployed by the B-80 or with our specially designed "minicone" system. The minicone system is a miniaturized CPT system that utilizes a coilable cone rod and thruster unit mounted in a cage that is lowered to the seafloor.

The minicone is attached to a shipboard data acquisition system and results can be viewed in real-time during the sounding. The minicone system allows for rapid deployment and completion of CPT soundings in water as deep as 5,000- ft.

Gregg also operates vibra-core and gravity core sampling systems that can be used to collect near surface soil cores.

The vibra-core system can be used to collect core samples to depths up to 20 ft. The gravity core system is useful for quickly sampling soils to a depth of 5 ft. For deeper coring, Gregg uses an OW coring system. The OW system is capa- ble of obtaining 2 in. cores and 3 in. Shelby tube or 3 in. split spoon samples.

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