Glossary - A

Natural and Built Environments


291 words
Abandoned WellA well whose use has been permanently discontinued ...
AbatementReducing the degree or intensity of, or ...
Abatement DebrisWaste from remediation activities
Abiotic Water Cyclenon-living chemical and physical factors of the ...
AblationThe process by which ice and snow dissipate owing ...
Aboveground Storage Tank
Absorbed DoseIn exposure assessment, the amount of a substance ...
Absorptionone substance taking in another either physically ...
Absorption BarrierAny of the exchange sites of the body that permit ...
Absorption ChillerA type of air cooling device that uses absorption ...
Absorption CoefficientIn reference to a solar energy conversion devices, ...
Absorption CoolingA process in which cooling of an interior space is ...
Absorption Pita hole dug in permeable ground and filled with ...
AbsorptivityIn a solar thermal system, the ratio of solar ...
AbutmentThe part of a valley or canyon wall against which ...
Abutment SeepageReservoir water that moves through seams or pores ...
ACBMAcronym for "asbestos-containing building material."
Accident Involving Explosives
AcclimatizationThe physiological and behavioral adjustments of an ...
AccumulatorA component of a heat pump that stores liquid and ...
Acid AerosolAcidic liquid or solid particles small enough to ...
Acid DepositionA complex chemical and atmospheric phenomenon that ...
Acid Mine DrainageThis refers to water pollution that results when ...
Acid Neutralizing CapacityMeasure of ability of a base (e.g. water or soil) ...
Acid RainA complex chemical and atmospheric phenomenon that ...
Acop(Adjusted Coefficient of Performance) - A standard ...
Action-With-Mitigation ConditionScenario of the future with the proposed action ...
Activated CarbonA highly adsorbent form of carbon used to remove ...
Activated SludgeProduct that results when primary effluent is ...
Active Conservation StorageThe portion of water stored in a reservoir that ...
Active CoolingThe use of mechanical heat pipes or pumps to ...
Active PowerThe component of electric power that performs ...
Active SolarAs an energy source, energy from the sun collected ...
Active Solar EnergySolar radiation used by special equipment to ...
Active Solar Energy SystemA system designed to convert solar radiation into ...
Active Solar HeaterA solar water or space-heating system that use ...
Active Storage CapacityThe total amount of reservoir capacity normally ...
Actual Peak ReductionThe actual reduction in annual peak load (measured ...
Acute EffectAn adverse effect on any living organism which ...
Acute ExposureA single exposure to a toxic substance which may ...
Acute Toxicityhe ability of a substance to cause severe ...
Adaptive Management AreaLandscape units designated for development and ...
Adaptive Radiationclosely related species that look very different ...
Add-On Control DeviceAn air pollution control device such as carbon ...
Adirondack Type Snow Sampling SetA snow sampler consisting of a 5-foot fiberglass ...
Adjusted ElectricityA measurement of electricity that includes the ...
AdsorptionRemoval of a pollutant from air or water by ...
AdulterantChemical impurities or substances that by law do ...
Advanced Wastewater TreatmentAny treatment of sewage that goes beyond the ...
Advanced Water TreatmentA level of wastewater treatment more stringent ...
Adverse Effects DataFIFRA requires a pesticide registrant to submit ...
Adverse HydroWater conditions limiting the production of ...
AdvisA program which combines the Antecedent ...
Aerated LagoonA holding and/or treatment pond that speeds up the ...
Aeration BasinA basin where oxygen is supplied by mechanical ...
Aeration TankA chamber used to inject air into water.
Aerial Photogrammetric MappingContour maps developed fromstereo pairs of air photographs.
Aerobic TreatmentProcess by which microbes decompose complex ...
Affected Environment- A description of the existing environment to be ...
Afforestationplanting new forests on lands that have not been ...
African ElephantAfrican elephants are the largest land animals on ...
African Gray ParrotThe African Grey Parrot (Psittacus erithacus), ...
African LeopardThe African Leopard (Panthera pardus pardus) is a ...
African MantidAfrican mantis and African praying mantis are ...
African Termite
AfterbayThe tail race of a hydroelectric power plant at ...
Afue(Annual Fuel Utilization Efficiency) - A measure ...
Age TankA tank used to store a chemical solution of known ...
Agency For Toxic Substances And Disease RegistryATSDR is part of the U.S. Department of Health and ...
Agent OrangeA toxic herbicide and defoliant used in the ...
AgoutiAgouti refers to a number of species of New World ...
AgribusinessProducers and manufacturers of agricultural goods ...
Agricultural Land Use Any land that is used primarily for the ...
Agricultural PollutionFarming wastes, including runoff and leaching of ...
Agricultural Pollutionrefers to biotic and abiotic byproducts of farming ...
Agricultural WastePoultry and livestock manure, and residual ...
AgroecosystemLand used for crops, pasture, and livestock; the ...
Agroforestryan ecologically based farming system that ...
Ahera Designated PersonA person designated by a Local Education Agency to ...
AhosAutomatic Hydrologic Observing System
Ahos-SAutomatic Hydrologic Observing System - Satellite
Ahos-TAutomatic Hydrologic Observing System - Telephone
Air BatteryStorage. a battery type forwhich the negative ...
Air BindingSituation where air enters the filter media and ...
Air Changes Per HourThe movement of a volume of air in a given period ...
Air CleaningIndoor-air quality-control strategy to remove ...
Air CollectorIn solar heating systems, a type of solar ...
Air ContaminantAny particulate matter, gas, or combination ...
Air Contaminant Discharge Permit
Air CurtainA method of containing oil spills. Air bubbling ...
Air DiffuserAn air distribution outlet, typically located in ...
Air Emission Inventory
Air Emissions ReductionThe use of fossil fuels releases VOCs, SO2, NOx, ...
Air Exchange RateThe rate at which outside air replaces indoor air ...
Air FilmA layer of still air adjacent to a surface which ...
Air Film CoefficientA measure of the heat transfer through an air film....
Air Filtera device for filtering particles of dust, soot, ...
Air Fuel CellRenewable/Alternative. a typeof fuel cell system ...
Air GapOpen vertical gap or empty space that separates ...
Air Handling UnitEquipment that includes a fan or blower, heating ...
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