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Glossary

HES G Terms

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General Shipyard Facility
(1) For operations on land, any structure or appurtenance thereto designed for the construction, repair, rehabilitation, refurbishment or rebuilding of any vessel, including graving docks, building ways, ship lifts, wharves and pier cranes; the land necessary for any structures or appurtenances; and the equipment necessary for the performance of any function referred to in this definition; and
(2) For operations other than on land, any vessel, floating dry lock or barge used for; or a type that is usually used for; activities referred to in paragraph (1) of this definition.

GLO
General Land Office

GPR
Ground Penetrating Radar

GC
Gas Chromatograph / Chromatography (used for chemical analysis)

Greenhouse Effect
A term used to describe the effect on the Earth's temperature that results from the capture of heat by molecules of carbon dioxide, water vapor, nitrous oxide, CFCs, ozone and other trace gases in the Earth's atmosphere.

Greenhouse Gas
Any gas that does not absorb incoming solar radiation but does absorb long-wavelength radiation emitted or reflected from the Earth's surface. The most important greenhouse gases are water vapor, carbon dioxide, nitrous oxide, methane, and Chlorofluorocarbons. When discussing global climate change the term "greenhouse gas" usually refers to the human-induced emissions of carbon dioxide, CFCs, methane and nitrous oxides.

GRT
Gross register tons, the gross ton measurement of the vessel under 46 U.S.C. chapter 145, Regulatory Measurement. For a vessel measured under only 46 U.S.C. chapter 143, Convention Measurement, the vessel’s gross tonnage, ITC is used to apply all thresholds expressed in terms of gross register tons.

GT ITC
Gross tonnage, ITC, the gross tonnage measurement of the vessel under 46 U.S.C. chapter 143, Convention Measurement. Under international conventions, this parameter may be referred to as “gross tonnage (GT).”

GWPS
Groundwater Protection Standard

GWQA
Groundwater Quality Assessment

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