Environment terminology · MLC-0121
Environment terms: G (787)
- Gram-Negative BacteriaBacteria which lose crystal violet stain but are stained pink when treated by Gram's method.
- Gram-Negative Oxygenic Photosynthetic BacteriaWidely distributed unicellular or multicellular bacteria. The cyanobacteria use chlorophyll a and phycobilins...
- Gram-Positive BacteriaBacteria which retain the crystal violet stain when treated by Gram's method.
- GraniteA coarse-grained intrusive igneous rock with at least 65% silica. Quartz, plagioclase feldspar and potassium...
- Grant1. An assistance agreement that does not substantially involve EPA in the project and where the recipient has...
- GRANT AGREEMENTAn assistance agreement that does not substantially involve EPA in the project and where the recipient has...
- Grant OfficerA person in each OW program office who serves as a central resource of information and coordinates...
- Grant Specialist1. The EPA official designated in the assistance agreement as EPA's administrative contact with the...
- Grantee1. The government to which a grant is awarded and which is accountable for the use of the funds provided. The...
- Grant(s)A legal instrument of financial assistance between a Federal awarding agency or pass-through entity and a...
- GrantsGrants are not benefits or entitlements. A federal grant is an award of financial assistance from a federal...
- GRANTS MANAGEMENT OFFICEThe Headquarters and Regional units responsible for all business management aspects associated with the...
- Granular Activated CarbonUses the physical/chemical adsorption process to remove soluble contaminants from wastewater. The adsorptive...
- Granular Activated Carbon AdsorptionA technology used to adsorb the relatively small quantities of soluble organics and inorganic compounds such...
- Granular Activated Carbon TreatmentA filtering system often used in small water systems and individual homes to remove organics. Also used by...
- Granular Diammonium Phosphate PlantAny plant manufacturing granular diammonium phosphate by reacting phosphoric acid with ammonia
- Granular Road BaseRoad base typically constructed by spreading aggregates in thin layers of 150 mm (6 inches) to 200 mm (8...
- Granular Triple Superphosphate Storage FacilityAny facility curing or storing fresh granular triple superphosphate.
- Granular-Media FiltrationRemoval of suspended solids accomplished by passing wastewater through a filter bed of granular media. Media...
- Granulocyte1. A leucocyte with conspicuous cytoplasmic granules. In humans the granulocytes are also classified as...
- Granuloma InguinaleAnogenital ulcers caused by Calymmatobacterium granulomatis as distinguished from lymphogranuloma inguinale...
- Grape PressingWashing and subsequent handling including pressing, heating, and filtration of natural juice from all...
- Grape ProcessingWashing and subsequent handling including pressing, heating, and filtration of natural juice from all...
- Graphic Arts and Printing OperationThis operation includes such processes as letterpress, flexographic printing, screen and digital printing...
- Graphic Arts CoatingCoating formulated and recommended for hand-application by artists using brush or roller techniques to indoor...
- Graphics Interchange Formata compressed image format. GIF was the first commonly used image format on the Web, but it has been largely...
- GraphiteAn allotropic form of carbon that is used in pencils, as a lubricant, and in matches and explosives. It is...
- Graphite Furnace Atomic Absorption SpectroscopyGraphite furnace atomic absorption (GFAA) spectroscopy is a highly sensitive spectroscopic technique that...
- Grass1. Refers to lawn clippings. Excludes leaves, brush, and branches. (Mish et al., 1988)
- Grass AnatomyParts of a plant in the Poaceae family
- Grass FuelGrasses that fuel fires; fires characteristically spread and burn out quickly.
- Grass SicknessA weakening and often fatal disease of horses, ponies and donkeys that impairs the part of the nervous system...
- Grasscycling1. Refers to the source reduction activity where by grass clippings are left on the lawn after mowing.
- grassed swalesA term to describe a vegetated, open runoff channel planted with grasses or turf. Similar terms include...
- Grassed WaterwayNatural or constructed watercourse or outlet that is shaped or graded and established in suitable vegetation...
- Grassland1. Terrestrial ecosystem (biome) found in regions where moderate annual average precipitation (25 to 76...
- Grate CleaningRemoving ash from fireboxes.
- Grate Kiln FurnaceType of indurating furnace
- Grate SiftingsThe materials that fall from the solid waste fuel bed through the grate openings.
- graupelAlso called soft hail or snow pellets, is precipitation that forms when super cooled droplets of water are...
- Gravel1. An unconsolidated, natural accumulation of rounded rock fragments resulting from erosion, consisting...
- GravimetricA means of measuring unknown concentrations of water quality indicators in a sample by WEIGHING a precipitate...
- GravitropismThe directional growth of organisms in response to gravity. In plants, the main root is positively...
- Gravity FlowThe movement of fluids in reaction to the force of gravity on the fluid. All open channels as well as most...
- Gravity Separation1. A method which uses gravity to separate the parts of dry granular mixtures or suspensions which have...
- Gravity Separation MethodTreatment of mineral particles which exploits differences between their specific gravities. The separation is...
- Gravity SystemThe movement of fluids in reaction to the force of gravity on the fluid. All open channels as well as most...
- Gravure Cylinder1. Printing cylinder with an intaglio image consisting of minute cells or indentations specially engraved or...
- GrayThe special name for the SI unit of absorbed dose (the amount of energy absorbed in mass) in joules per...
- Gray InfrastructureHuman-made engineered parts of the infrastructure
- Gray IronA cast iron that gives a gray fracture due to the presence of flake graphite.
- gray literature1. Research reports that are not found in traditional peer-reviewed publications; for example: government...
- Gray MoldFungus appearing under consistently wet or humid conditions to grow on fruits and vegetables
- Gray Water1. Water that is considered waste and not to be used for cleaning milking systems. Usually including recycled...
- Grayscalea range of luminance values for evaluating shading through white to black. Also, a term used when referring...
- Graywater1. Wastewater drained from sinks, tubs, showers, dishwashers, clothes washers, and other non-toilet sources.
- Grazing1. Any vegetated land that is grazed or that has the potential to be grazed by animals. (More information...
- GreaseAny product used to reduce friction, heat, or wear between moving or adjacent solid surfaces, or that enhance...
- Great Basin RegionThe drainage of the Great Basin that discharges into the states of Utah and Nevada. Includes Parts of...
- Great Divide-Upper GreenThe Green River Basin above the confluence with the Yampa River Basin; and the Great Divide closed basin...
- Great Lakes1. In EMAP, the resource that encompasses the five Great Lakes--Superior, Michigan, Huron, Erie, and Ontario...
- Great Lakes BasinWaters defined as “Great Lakes” and “Great Lakes System” as those terms are defined in § 132.2 of this...
- Great Lakes Connecting ChannelSaint Mary's River, Saint Clair River, Detroit River, Niagara River, and Saint Lawrence River to the Canadian...
- Great Lakes RegionThe drainage within the United States that ultimately discharges into: (a) the Great Lakes system, including...
- Great Lakes Water Quality Agreement1. Agreement Between Canada and the United States of America on Great Lakes Quality, 1978
- Great MiamiThe Great Miami River Basin. Indiana, Ohio. Area = 5330 sq.mi.
- Great PlainsRefers to the continental slope of central North America in Canada and the United States, a vast grassland...
- Great Salt LakeThe Great Salt Lake Basin excluding the Bear River Basin. Idaho, Nevada, Utah, Wyoming. Area = 28700 sq.mi.
- GreenThe Green River Basin. Kentucky, Tennessee. Area = 9140 sq.mi.
- Green AlgaeUnicellular or colonial algae with chlorophyll pigments similar to those in terrestrial green plants. Some...
- Green BuildingThe building industry is increasingly focused on making its buildings greener, which includes using...
- Green Chemistry1. Design of chemical products and processes that reduce or eliminate the use or generation of hazardous...
- Green Chemistry ManufacturingDesign of chemical products and processes that reduce or eliminate the use or generation of hazardous...
- Green DesignThe design of products, services, buildings, or experiences that are sensitive to environmental issues and...
- Green Engine Factor1. Factor that is applied to emission measurements from a locomotive or locomotive engine that has had little...
- Green Infrastructure1. An adaptable term used to describe an array of products, technologies, and practices that use natural...
- Green Liquor SulfiditySulfidity of the liquor which leaves the smelt dissolving tank.
- Green Manure1. Crops grown to be incorporated into the soil to increase soil quality, fertility and structure.
- Green mortgageMortgages that provide benefits to homeowners who reduce their impacts on the environment and minimize...
- Green Power1. Electricity that is generated from renewable energy sources is often referred to as "green power." Green...
- Green Power Marketers1. Due to increased customer awareness of the environmental implications associated with power generation, a...
- Green Power ProductGreen power electricity products are supplied from renewable energy resources that provide the highest...
- Green Power Purchasing1. Green power can be purchased nationwide from several sources. Green power marketers offer green power...
- Green Pricing1. Green pricing refers to an optional utility service that allows customers of traditional utilities support...
- Green Product IndexA set of environmental criteria that are aggregated and by which products in similar categories can be...
- Green Purchasing PlanA green purchasing plan is an agency's strategy for maximizing its purchases of green products and services...
- Green RemediationConsidering all environmental effects of remedy implementation and incorporating options to minimize the...
- Green Roof1. Also known as rooftop gardens, green roofs are planted over existing roof structures, and consist of a...
- Green RoofsGreen roofs are rooftops planted with vegetation. Intensive green roofs have thick layers of soil (6 to 12...
- Green Rotary DryerRotary dryer that dries wood particles or fibers with an inlet moisture content of greater than 30 percent...
- Green StreetscapeThose which adhere to well established standards of sustainable design. Several attributes of good...
- Green TechnologyA technology that offers a more environmentally benign approach compared to an existing technology.
- Green TireAssembled, uncured tire.
- Green Tire Spraying OperationSystem used to apply a mold release agent and lubricant to the inside and/or outside of green tires to...
- Green VehicleEach model year, EPA rates every new car, truck, and Sport Utility Vehicle (SUV) for greenhouse gas and...
- Greenfield1. A site that has not been previously developed or graded, including previous agricultural fields.
- Greenfield SuiteContiguous area under common control that is an undeveloped site.
- Greenfields1. Locations, typically outside of cities, that have not previously been developed.
- GreenhouseAny operation engaged in the production of agricultural plants inside any structure or space that is enclosed...
- Greenhouse BarnCommonly referring to any of a group of hoop type barns with translucent or plastic covers over a tubular...
- Greenhouse Effect1. The warming of the Earth's atmosphere attributed to a buildup of carbon dioxide or other gases; some...
- Greenhouse Gas1. A greenhouse gas is any gas that absorbs infrared radiation in the atmosphere. Greenhouse gases include...
- Greenhouse Gas Auto StandardsA greenhouse gas auto standard establishes fleet average GHG emission requirements for vehicles, such as...
- Greenhouse Gas Calculation MethodologyMethodology prescribed under the section “Calculating GHG Emissions” in any subpart of part 98.
- Greenhouse Gas EmissionEmission of any gas that absorbs infrared radiation in the atmosphere.
- Greenhouse Gas Emissions ModelGEM simulation tool described in 40 CFR 1037.520. Note that an updated version of GEM applies starting in...
- Greenhouse Gas InventoryA greenhouse gas (GHG) inventory is an accounting of the amount of GHGs emitted to and removed from the...
- Greenhouse Gas MitigationActions a community has considered or taken to reduce greenhouse gas emissions.
- Greenhouse Gas Monitoring SystemMonitoring technology that measures various greenhouses gases, e.g. CO, CO2, Nox, THC, H2S, SO2, O2.
- Greenhouse Gas Performance StandardA power sector greenhouse gas (GHG) performance standard is a requirement that all new power plants have...
- Greenhouse Gas PollutantCompounds regulated under this part based primarily on their impact on the climate. This includes CO2, CH4...
- Greenhouse Gas RegistryA greenhouse gas (GHG) registry is an official repository to which an entity reports emissions of one or more...
- Greenhouse Gas ScoreThis score reflects fuel emissions of carbon dioxide (CO2) and other greenhouse gases. (Note: see About the...
- greenhouse gases1. Gases that occur naturally in the Earth's atmosphere and trap heat to keep the planet warm. Some examples...
- Greenhouse Gases EmittedVehicles create greenhouse gases as a result of fuel combustion. Greenhouse gases trap heat in the...
- Green/Sustainable ProcurementA process for buying products with a reduced environmental impact compared to similar products.
- GreenwareClay, ceramic or sanitaryware that have not gone throught the firing process via kilns.
- GreenwashingThe practice of advertising a product or process as "green" or environmentally friendly, when the product...
- GreenwayA greenway is a corridor of open land that provides one or more of the following benefits: (1) protection and...
- GrenzA soil horizon, which is frequently marked by a bed of clay, that results from a temporary halt in the...
- Grey Literature1. Publications particularly of governments or businesses that are not commercially published and that may be...
- Grey Water1. Non-drinkable water that can be reused for irrigation, flushing toilets, and other purposes.
- GreyfieldA site that has been previously developed or graded and may have existing infrastructure that can be utilized.
- Grid1. A data structure commonly used to represent map features. A cellular-based data structure composed of...
- Grid Casting FacilityFacility which includes all lead melting pots and machines used for casting the grid used in battery...
- Grid cellAn approximately 890m by 890m square defined by the (X,Y) coordinates of its center point. The set of grid...
- Grid enhancementIncreasing the grid density, a method for augmenting the sample. When the sample size is too small, as will...
- Grid, hierarchicalHaving nested levels and structure; the density of the EMAP grid is readily increased or reduced in a regular...
- Grid ModelGrid models are used primarily to assess concentrations of secondary criteria pollutants (e.g., ozone) in...
- Grid openingsAn area that overlays a mounted sample to aid in its microscopic examination.
- grid point dataData that is collected at the intersections of imaginary or real lines laid over a surface in a grid pattern.
- Grid randomizationThe process of randomly positioning the grid so that each (discrete) unit of area of fixed size is equally...
- Grid, triangular (EMAP)A lattice of points in exact equilateral triangular structure on a plane. The EMAP grid points are 27.1 km...
- Grid-Connected SystemSolar electric or photovoltaic (PV) system in which the PV array acts like a central generating plant...
- Grignard ReactionAn important synthetic method for forming carbon-carbon bonds, using alkyl, vinyl, or aryl-magnesium halides,
- GrinderUnit which is used to pulverize dry phosphate rock to the final product size used in the manufacture of...
- Grinder PumpA mechanical device that shreds solids and raises sewage to a higher elevation through pressure sewers.
- grinder pump systemA pump that shreds solids in a waste stream and conveys the resulting mixture under pressure to a subsequent...
- Grinding1. Process performed on a workpiece to remove undesirable material from the surface or to remove burrs or...
- Grinding MillMachine used for the wet or dry fine crushing of any nonmetallic mineral. Grinding mills include, but are not...
- GripA stagehand on an audiovisual production crew.
- groin1. An engineering structure oriented perpendicular to the coast, used to accumulate littoral sand by...
- GroinsA wall or jetty built out over a riverbank or seashore to control erosion.
- Grooved ConcreteFloor surfaces with grooved patterns cut or depressed into concrete to provide better traction for cattle.
- Gross αThe total radioactivity due to alpha particle emission as inferred from measurements on a dry sample.
- Gross Alpha EmissionThe total radioactivity due to alpha particle emission as inferred from measurements on a dry sample.
- Gross Alpha Particle Activity1. The total radioactivity due to alpha particle emission as inferred from measurements on a dry sample.
- Gross Alpha Particle Activity (regulatory)The total radioactivity due to alpha particle emission as inferred from measurements on a dry sample. {OW/TSC}
- Gross Alpha/Beta Particle ActivityThe total radioactivity due to alpha or beta particle emissions as inferred from measurements on a dry sample.
- Gross βThe total radioactivity due to beta particle emission as inferred from measurements on a dry sample.
- Gross Beta EmissionThe total radioactivity due to beta particle emission as inferred from measurements on a dry sample.
- Gross Beta Particle Activity1. The total radioactivity due to beta particle emission as inferred from measurements on a dry sample.
- Gross Beta Particle Activity (regulatory)The total radioactivity due to beta particle emission as inferred from measurements on a dry sample. {OW/TSC}
- Gross Combination Weight Rating1. Value specified by the vehicle manufacturer as the maximum weight of a loaded vehicle and trailer...
- gross countTotal activity from all emitters (alpha or beta).
- Gross domestic productThe total value of goods and services produced by labor and property located in the United States. As long as...
- Gross Electrical Output1. For a unit, electricity made available for use, including any such electricity used in the power...
- Gross Energy Output1. For facilities constructed, reconstructed, or modified before May 4, 2011, the gross electrical or...
- Gross Output1. Gross useful work performed by the steam generated. For units generating only electricity, the gross...
- Gross Power1. Power measured at the crankshaft or its equivalent, the engine being equipped only with the standard...
- Gross Power-Generation PotentialThe installed power generation capacity that landfill gas can support.
- Gross Sales ReceiptsTaxable transactions, or the total dollar value of goods sold in a state that are subject to state sales tax...
- Gross Vehicle Weigh Rating Class 3Relating to heavy-duty motor vehicles above 10,000 pounds GVWR but at or below 14,000 pounds GVWR.
- Gross Vehicle WeightManufacturer’s gross weight rating for the individual vehicle. [40 CFR 86.082-2 (CFR 2018)]
- Gross Vehicle Weight Rating1. The weight specified by the manufacturer as the loaded weight of a single vehicle. The loaded weight of...
- Gross Vehicle Weight Rating ClassRelating to GVWR classes, as follows:(1) Class 2b means heavy-duty motor vehicles at or below 10,000 pounds...
- Gross Vehicle Weight Rating Class 2bRelating to heavy-duty motor vehicles at or below 10,000 pounds GVWR.
- Gross Vehicle Weight Rating Class 4Relating to heavy-duty motor vehicles above 14,000 pounds GVWR but at or below 16,000 pounds GVWR.
- Gross Vehicle Weight Rating Class 5Relating to heavy-duty motor vehicles above 16,000 pounds GVWR but at or below 19,500 pounds GVWR.
- Gross Vehicle Weight Rating Class 6Relating to heavy-duty motor vehicles above 19,500 pounds GVWR but at or below 26,000 pounds GVWR.
- Gross Vehicle Weight Rating Class 7Relating to heavy-duty motor vehicles above 26,000 pounds GVWR but at or below 33,000 pounds GVWR.
- Gross Vehicle Weight Rating Class 8Relating to heavy-duty motor vehicles above 33,000 pounds GVWR.
- Ground1. Emissions or resources from the solid phase of the earths crust [Original source...
- Ground CoverPlants grown to keep soil from eroding.
- Ground Cover PlantPlants grown to keep soil from eroding.
- Ground electrodeA surface electrode used for SP and resistivity logging.
- Ground FireFires that occur when plant roots and other organic matter below the soil surface ignite. OR Fire that...
- ground fuelsAll combustible materials below the surface litter, including duff, roots, peat and sawdust dumps that...
- Ground Granulated Blast Furnace SlagA by-product of iron blast furnaces. The slag is ground into granules finer than Portland cement and can be...
- Ground Level EmissionAir emissions that are emitted at ground level. This is the default context for air flows in the Federal...
- Ground Level OzoneGround-level ozone (smog) is formed by a chemical reaction between volatile organic pollutants (VOCs) and...
- Ground ModelRepresentation of the earth's surface and subsurface, including hydrological features.
- Ground MoraineAn extensive, low-relief area of till, that has an uneven or undulating surface and is commonly bounded on...
- Ground MotionGround motion is the movement of the earth's surface from earthquakes or explosions. Ground motion is...
- ground penetrating radar1. A geophysical method that uses high frequency electromagnetic waves to obtain subsurface information. The...
- Ground Phosphate Rock Handling and Storage SystemSystem which is used for the conveyance and storage of ground phosphate rock from grinders at phosphate rock...
- Ground Source Heat PumpElectrically powered systems that tap the stored energy of the earth. These systems use the earth's...
- Ground Traffic/Marking CoatingCoating designed and labeled exclusively to be applied to dirt, gravel, grass, concrete, asphalt, warehouse...
- Ground TransportationTransportation over any of the Earth's surface which is not primarily water.
- Ground Water1. The supply of fresh water found beneath the Earth's surface, usually in aquifers, which supply wells and...
- Ground Water Cleanup1. As applied to ground water, cleanup is the term used for actions taken to deal with a release or threat of...
- Ground Water Cleanup TechnologyRemoves or contains the source of the contamination and clean up the affected ground water.
- Ground Water Contaminant RemovalRemoval of harmful substances such as noxious chemicals, harmful bacteria or other organisms, or radioactive...
- Ground Water MonitoringSampling and analysis of ground water for the purpose of detecting the release of contamination from a solid...
- Ground Water Protection AreaGeographic areas near and/or around community and non-transient non-community water systems that use ground...
- Ground Water under Direct InfluenceAny water beneath the surface of the ground with significant occurrence of insects or other macroorganisms...
- Ground Water Under the Direct Influence of Surface WaterAny water beneath the surface of the ground with: 1. significant occurrence of insects or other...
- Ground Water under the Direct Influence (UDI) of Surface WaterAny water beneath the surface of the ground with: 1) significant occurrence of Insects or other...
- Ground Water-Surface Water Mixing ZoneZone where river water and aquifer water mix
- Ground-levelDescribes air emissions that are emitted at ground level. This is the default context for air flows in the...
- Ground-source geothermal systemA type of heat pump that uses the ground, ground water, or ponds as a heat source and heat sink, rather than...
- Groundwater1. Water that sinks into the soil, where it may be stored for long times in slowly flowing and slowly renewed...
- Ground-Water AquiferA natural underground layer of porous, water-bearing materials (sand, gravel) usually capable of yielding a...
- Groundwater ContaminantWater pollutant in the zone of saturation within the earth which supplies wells and springs.
- Groundwater ContaminationIntroduction into groundwater of microorganisms, chemicals, toxic substances, wastes, or wastewater in a...
- Groundwater ControlAny engineering control pertaining to groundwater, including in situ and ex situ treatment like...
- Groundwater Control StatusSee definitions for Contaminated groundwater migration is not under control, Contaminated groundwater...
- Ground-Water DischargeGround water entering near coastal waters which has been contaminated by landfill leachate, deep well...
- Groundwater DischargeGround water entering near coastal waters which has been contaminated by landfill leachate, deep well...
- Ground-Water Disinfection RuleA 1996 amendment of the Safe Drinking Water Act requiring EPA to promulgate national primary drinking water...
- Groundwater InfiltrationIn § 440.131 means that water which enters the treatment facility as a result of the interception of natural...
- Groundwater Migration Environmental IndicatorWhat does the Contaminated Groundwater Migration EI measure? - The GM EI documents whether contamination is...
- Groundwater Migration Under ControlA "yes" indicates that there is no migration of contaminated groundwater under current conditions. This...
- Groundwater MonitoringAction used when monitoring is the only cleanup response specified in a Record of Decision (ROD).
- Groundwater Monitoring (Post-Record of Decision)Groundwater monitoring action is used when monitoring is the only cleanup response specified in a Record of...
- Groundwater Monitoring SystemA system which collects samples from the uppermost aquifer (defined as the geological formation nearest the...
- Groundwater PlumeA defined area of groundwater contamination. In this project, the term "groundwater plume" means the...
- Ground-Water Recharge1. Inflow of water to a ground-water reservoir from the surface. Infiltration of precipitation and its...
- Groundwater Recharge1. Inflow of water to a ground-water reservoir from the surface. Infiltration of precipitation and its...
- Groundwater Releases Controlled Determination - Migration of Contaminated GW is Under Control1. The event by which the State or EPA completes an Environmental Indicators (EI) Evaluation verifying that...
- Groundwater Releases Controlled Determination - More Information Needed1. The event by which the State or EPA completes an Environmental Indicators (EI) Evaluation verifying that...
- Groundwater Releases Controlled Determination - Unacceptable Migration of GW is Observed or Expected1. The event by which the State or EPA completes an Environmental Indicators (EI) Evaluation verifying that...
- Groundwater RunoffGroundwater that is discharged into a stream channel as spring or seepage water.
- Groundwater Sampling DeviceUsed to collect water samples to be analyzed for all groundwater contaminants. Examples of these devices...
- Group 1 Batch Front-End Process VentBatch front-end process vent releasing annual organic HAP emissions greater than or equal to 11,800 kg/yr and...
- Group 1 Batch Process Vent1. Batch process vent releasing annual organic HAP emissions greater than the level specified in § 63.1323(d)...
- Group 1 BoilerTangentially fired boiler or a dry bottom wall-fired boiler (other than a unit applying cell burner...
- Group 1 Combination of Batch Process VentsCollection of process vents in a PMPU from batch unit operations that are associated with the use of a...
- Group 1 Continuous Front-End Process VentContinuous front-end process vent for which the flow rate is greater than or equal to 0.005 standard cubic...
- Group 1 Continuous Process Vent1. Continuous process vent releasing a gaseous emission stream that has a total resource effectiveness index...
- Group 1 FurnaceFurnace of any design that melts, holds, or processes aluminum that contains paint, lubricants, coatings, or...
- Group 1 Miscellaneous Coating OperationApplication of edge seals, nail lines, logo (or other information) paint, shelving edge fillers...
- Group 1 OilInclude:(1) A petroleum-based oil that, at the time of shipment, consists of hydrocarbon fractions:(A) At...
- Group 1 Process Vent1. Process vent from a process at an existing or new affected source for which the uncontrolled organic HAP...
- Group 1 Storage TankStorage tank with a capacity greater than or equal to 10,000 gal storing material that has a maximum true...
- Group 1 Storage Vessel1. Storage vessel at an existing affected source that meets the applicability criteria specified in Table 2...
- Group 1 Wastewater Stream1. Process wastewater stream at an existing or new source that meets the criteria for Group 1 status in §...
- Group 2 Batch Front-End Process VentBatch front-end process vent that does not fall within the definition of a Group 1 batch front-end process...
- Group 2 Batch Process Vent1. Batch process vent that does not fall within the definition of a Group 1 batch process vent.
- Group 2 BoilerWet bottom wall-fired boiler, a cyclone boiler, a boiler applying cell burner technology, a vertically fired...
- Group 2 Combination of Batch Process VentsCollection of process vents in a PMPU from batch unit operations that are associated with the use of a...
- Group 2 Continuous Front-End Process VentContinuous front-end process vent for which the flow rate is less than 0.005 standard cubic meter per minute...
- Group 2 Continuous Process Vent1. Continuous process vent that does not fall within the definition of a Group 1 continuous process vent.
- Group 2 Furnace1. Furnace of any design that melts, holds, or processes only clean charge and that performs no fluxing or...
- Group 2 Process Vent1. Any process vent that does not meet the definition of a Group 1 process vent.
- Group 2 Storage TankStorage tank that does not meet the definition of a Group 1 storage tank.
- Group 2 Storage Vessel1. Storage vessel that does not fall within the definition of a Group 1 storage vessel. [40 CFR 63.1312 (CFR...
- Group 2 Wastewater Stream1. Process wastewater stream that does not meet the definition of a Group 1 wastewater stream. [40 CFR...
- Group 2A Process VentProcess vent that is not Group 1 or Group 2B for which monitoring and recordkeeping are required to...
- Group 2B Process VentProcess vent that is not Group 1 or Group 2A for which monitoring and recordkeeping are not required to...
- Group FunctionA group of related activities and/or projects for which an organizational unit is responsible. This is also...
- Group of Processes1. All of the equipment associated with processes in a building, processing area, or facility-wide. For a...
- Group Quarters PopulationIncludes all people not living in households. This term includes those people residing in group quarters as...
- Groups of chemicalsA group of chemicals. This can include undefined mixtures, although it is recommended that individual...
- Group-Transferring CoenzymesIntermediate carriers of functional groups being transferred in the reaction catalyzed with another enzyme
- grout1. Cement and/or bentonite slurry used to seal DP holes and other exploratory borings. It is also used to...
- GrowerAn immature male or female swine animal managed between weaning and finishing weights.
- Grower SwineAn immature male or female swine animal managed between weaning and finishing weights.
- Grow-FinishThe last phase of production before the animals go to market.
- GrowthThe amount, as a percent, a community's demand for water or wastewater treatment has increased or decreased...
- Growth Factor BindingGrowth Factor Interaction involves temporary non-covalent binding through intermolecular physical forces of...
- Growth RingThe layer of wood growth put on a tree during a single growing season. In the temperate zone, the annual...
- GSA AdvantageThe General Services Administration's Internet accessible tool for ordering products.
- GS-omega/kappa-Hxtx-Hv1aA biological insecticide and miticide.
- GTP BindingGTP Binding is a molecular interaction between specific proteins (containing a GTP binding site) and...
- GuaifenesinAn expectorant that also has some muscle relaxing action. It is used in many cough preparations.
- GuanineOne of the four nitogenous bases in DNA and RNA that make up the letters ATGC, guanine is the "G". The others...
- Guanosine TriphosphateAn energy-rich nucleotide analogous to ATP that is composed of guanine linked to ribose and three phosphate...
- Guard log1. A type of focused resistivity log that derives its name from guard electrodes that are designed to focus...
- GuardianIndividual who is authorized under applicable State, Tribal, or local law to consent on behalf of a child to...
- Guidance1. A suggested practice that is not mandatory, intended as an aid or example in complying with a standard or...
- Guidance Document1. EPA has prepared memos and documents that articulate EPA policies on a number of topics related to state...
- Guidance DocumentsEPA has prepared memos and documents that articulate EPA policies on a number of topics related to state...
- Guide CoatPrimer-surfacer.
- Guide Coat OperationGuide coat spray booth, flash-off area and bake oven(s) which are used to apply and dry or cure a surface...
- Guideline1. Official, peer-reviewed documentation stating current U.S. EPA methodology in assessing risk of harm from...
- Guidelines (human health risk assessment)Official, peer-reviewed documentation stating current U.S. EPA methodology in assessing risk of harm from...
- GulfA relatively large portion of sea, partly enclosed by land.
- Gully1. A channel or miniature valley cut by concentrated, non-continuous runoff such as during snowmelt or...
- Gully Erosion1. They are formed when channel development has progressed to the point where the gully is too wide and too...
- GummosisThe exudation of gum, latex or sap from some fruit trees and sugar cane, which may be caused by insects...
- Gun wash systemA cleaning system used to clean spray guns after being used to spray auto body parts.
- GunnisonThe Gunnison River Basin. Colorado. Area = 7930 sq.mi.
- Gutter1. A shallow to deep channel located behind cows in tiestall barns capture manure and urine.
- Gypsic HorizonThe gypsic horizon is an illuvial horizon in which secondary gypsum has accumulated to a significant extent...
- Gypsum WallboardConstruction panels with a noncombustible core of gypsum and paper surfaces and edges. Used for interior...
- gyroscopic steering tool1. Used in horizontal directional drilling, a highly accurate locating technology that uses gyroscopes...
787 of 30,736 terms in Environment terminology (MLC-0121). Request the full dataset.