Environment terminology · MLC-0121

Environment terms: B (1,313)

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B 0Maximum CH4 producing capacity of a waste stream, kg CH4/kg COD.
B CellSmall white blood cells that help the body defend itself against infection. These cells are produced in bone...
B Cell ProliferationGrowth and reproduction of B-lymphocytes.
B Horizon1. The layer that typically is immediately beneath the E horizon and often called the subsoil. This middle...
B Lymphocyte1. Immunologically important lymphocyte that is not thymus-dependent, is either short-lived and naive or...
B Nitropropionic AcidA mycotoxin, poisonous substance generated by certain fungi.
B Renewable Identification NumberRIN verified during the interim period by a registered independent third-party auditor using a QAP that has...
B1 Emissions ScenarioA low emissions scenario in which emissions are reduced substantially, but not as rapidly as B1.
B2 Emissions ScenarioA low emissions scenario in which emissions are reduced substantially, but not as rapidly as B1.
BabesiaA genus of tick-borne protozoan parasites that infests the red blood cells of mammals, including humans...
BabesiosisA parasitic infection caused by Babesia. It is transmitted by ticks and infects the red blood cells. Signs...
Baby Food ProcessingProcessing of canned fresh fruits and vegetables, meats, eggs, fruit juices, cereal, formulated entrees...
BacillariophytaDiatoms -- in the phylum of microscopic unicellular Stramenopiles. Most are aquatic, being found in fresh...
Bacillary BacteriaRod-shaped bacteria
Bacillary DysenteryShigellosis, or bacillary dysentery, is an intestinal infection caused by Shigella, a genus of...
BacillusA genus of Bacillaceae that are spore-forming, rod-shaped cells. Most species are saprophytic soil forms with...
Bacillus amyloliquefaciens MBI 600A spore-forming bacterium that colognizes the developing root system of young plants.
Bacillus anthracis1. A species of bacteria that causes anthrax in humans and animals.
Bacillus cereus1. Bacillus cereus is a Gram-positive, facultatively aerobic sporeformer whose cells are large rods and whose...
Bacillus cereus Food PoisoningFood poisoning is the general description although two recognized types of illness are caused by two distinct...
Bacillus mycoides Isolate JExperimental use as a fungicide to control Cercospora Leaf Spot on sugar beet leaves.
Bacillus pumilus1. A soil bacteria that is spore like gram positive, and aerobic. It is used as an active ingredient in...
Bacillus subtilis1. Bacteria capable of growth within diverse environments including the gastrointestinal tracts of animals
Bacillus thuringiensisA soil bacterium that produces toxins that are deadly to some pests. The ability to produce Bt toxins has...
Bacillus thuringiensis ssp. aizawai strain ABTS-1857Insecticide to prevent and control wax moths in beehives
Bacillus thuringiensis ssp. aizawai strain GC-91A specific strain of the bacterial insecticide bacillus thuringiensis selected for its control of...
Bacillus thuringiensis ssp. kurstaki strain ABTS-351Used as an insecticide (PT18) against the larvae Lepidoptera insect species and the specific use is for the...
Bacillus thuringiensis ssp. kurstaki strain BMP123Insecticide for Lepidoptera on terrestrial food crops, greenhouse non-food crops, domestic outdoor uses and...
Bacillus thuringiensis ssp. kurstaki strain EG2348Insecticide used for the control of gypsy moth and spruce budworm
Bacillus thuringiensis ssp. kurstaki strain SA - 11an insecticide
Bacillus thuringiensis variety aizawaiBacillus thuringiensis, or simply Bt, is a naturally occurring soil bacterium that, when sprayed on plants...
Bacillus thuringiensis variety israeliensisBacillus thuringiensis, or simply Bt, is a naturally occurring soil bacterium that, when sprayed on plants...
Bacillus thuringiensis variety kurstakiBacillus thuringiensis, or simply Bt, is a naturally occurring soil bacterium that, when sprayed on plants...
BackThe dorsal area between the base of the neck and the sacrum.
Back Barrier FlatA subaerial, gently sloping landform on the lagoon side of the barrier beach ridge. These flats are composed...
Back EndUnit operations in an EPPU following the stripping operations. Back-end process operations include, but are...
Back End Continuous Process VentContinuous process vent for operations related to processing liquid resins into a dry form. Back-end process...
Back End CostInclude environmental costs that arise following the useful life of processes, products, systems, or...
Back End ProcessSafely manage, prepare, and dispose of highly radioactive spent nuclear fuel. Chemical processing of spent...
Back Pressure1. A pressure that can cause water to backflow into the water supply when a user's water system is at a...
back reamerA device pushed or pulled into the borehole to enlarge the diameter of the borehole.
Backdrafting1. A condition caused by negative pressure in the home in which the exhaust from combustion equipment such as...
backdunesDunes inland from the lakes with well-established vegetation.
Backfill TechniqueTechniques used in cumulative case studies to collect information needed if the study is to be usable for...
Backfill TechniquesTechniques used in cumulative case studies to collect information needed if the study is to be usable for...
backfilling1. The filling in again of a place from which the rock or ore has been removed.
Backflow1. A reverse flow condition, created by a difference in water pressures, which causes water to flow back into...
Background ConcentrationsThe amount of a pollutant that exists in the air that does not come from a specific source. These pollutants...
Background count rateThe counting rate obtained on a given instrument with a background counting sample. Typical reference...
Background DataThe background data include energy and materials that are delivered to the foreground system as aggregated...
BACKGROUND DENSITYThe opacity of the noninformation area of a microform. See also DENSITY (2).
background geochemistryThe abundance of an element in a naturally occurring material in an area where the concentration is not...
Background InformationSupporting material used or usable during the course of the project, including peer-reviewed external...
Background Level1. 1. The concentration of a substance in an environmental media (air, water, or soil) that occurs naturally...
Background Levels1. Two types of background levels may exist for chemical substances: (a) Naturally occurring levels: Ambient...
Background measurementsMeasurements made with either active instruments exposed to a radon-free gas, such as aged air or nitrogen...
Background Mesoscale FieldA water mass characterized by organized ocean-surface currents formed by coupled eddies (at the mesoscale...
Background Radiation1. Radiation arising from radioactive material other than that under consideration. Background radiation due...
Background SampleA sample used in establishing a background level.
background sourceAny source from which pollutants are released and contribute to the background level of a pollutant, such as...
BackgroundingGrowing program for feeder cattle from the time calves are weaned until they are on a finishing ration in the...
BACKING UPMaking a copy of a computer file for use if the original is lost, damaged, or destroyed. Sometimes called...
Backing WindWinds which shift in a counterclockwise direction with time at a given location (e.g. from southerly to...
BackscatterProcess by which up to 25% of radiant energy from the sun is reflected or scattered away from the surface by...
Backscatter Ultraviolet SpectrometerType of spectrometer sensitive to ultraviolet radiation scattered by clouds, etc., through an angle of more...
Backscattered RadiationThe scattering of radiant energy into the hemisphere of space bounded by a plane normal to the direction of...
Backshore1. The upper part of the active beach above the normal reach of the tides (high water), but affected by large...
BacksiphonageA form of backflow caused by a negative or below atmospheric pressure within a water system.
Backstop Daily NOX Emissions RateNOX emissions rate used in the determination of the CSAPR NOX Ozone Season Group 3 primary emissions...
Backstop emission rateA rate-based emission limit applied to a regulated source in conjunction with a cap; generally used to ensure...
Back-up curveA curve on the analog record that displays log data on a new scale when deflections on the main curve exceed...
Backup Energy SystemA reserve appliance; for example, a stand-by generator for a home or commercial building.
Backup FuelFuel for a unit where: (1) For purposes of the requirements of the monitoring exception of appendix E of part...
BackwashThe seaward return of the water following the uprush of the waves. Also called backrush or run down.
Backwashing1. The process of reversing the flow of water back through the filter media to remove the entrapped solids.
Backwater1. A still body of water or a still portion of a larger body of water that is unaffected by the flow of the...
Backyard Composting1. refers to the diversion of food scraps and yard trimmings from the municipal waste stream through the...
Bacteria1. (Singular: bacterium) Microscopic living organisms that can aid in pollution control by metabolizing...
Bacteria and Other MicrobesBacteria and other microbes (pathogens) are potentially disease-causing organisms from human or animal waste...
Bacteria by ShapeBacteria exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal.
Bacterial AdhesinCell-surface components or appendages of bacteria that facilitate adhesion to other cells or to inanimate...
Bacterial AdhesionPhysicochemical property of fimbriated ( fimbriae, bacterial) and non-fimbriated bacteria of attaching to...
Bacterial AggregationThe phenomena of bacterial cells forming clusters, or otherwise grouping together in a mass.
Bacterial Artificial Chromosome1. A vector used to clone DNA fragments (100- to 300-kb insert size; average, 150 kb) in Escherichia coli...
Bacterial Cell WallA specialized, rigid extracellular matrix that lies next to the plasma membrane, protecting a cell and...
Bacterial ChromatophoreOrganelles of phototrophic bacteria which contain photosynthetic pigments and which are formed from an...
Bacterial ChromosomeStructures within the nucleus of bacterial cells consisting of or containing DNA, which carry genetic...
Bacterial ColonyGroup of bacterial cells that energe to become a large cohesive group, grown from a single bacterium
Bacterial ContaminationIntroduction into water, air, and soil of bacteria in a concentration that makes the medium unfit for its...
Bacterial Denitrification1. The biological reduction of nitrate to nitrogen gas by bacteria in soil.
Bacterial FimbriaeThin, hairlike appendages, 1 to 20 microns in length and often occurring in large numbers, present on the...
Bacterial Gill DiseaseCaused by Cytophaga bacteria, gills of fish are damaged, allowing infection to enter more easily.
Bacterial InfectionsAn acute infectious disorder caused by gram positive or gram negative bacteria. Representative examples...
Bacterial Nucleoid RegionNucleus-like space in a prokaryotic cell that contains genetic material not encased by a nuclear membrane.
Bacterial Photochemical Reaction CenterFor photosynthetic bacteria, the assemblage where the energy conversion reactions of photosynthesis. take...
Bacterial PneumoniaInflammation of the lung parenchyma that is caused by bacterial infections.
Bacterial RibosomeMulticomponent ribonucleoprotein structures found in the cytoplasm of cells, and in mitochondria, and...
Bacterial Spore1. Heat and stain resistant, metabolically inactive bodies formed within the vegetative cells of bacteria of...
Bacterial WetwoodChronic bacterial infection of shade and ornamental trees, characterized by the oozing condition of the wood...
Bacterial WiltA plant disease caused by bacteria which causes wilting and shriveling of the stems and leaves.
Bactericide1. A pesticide used to control or destroy bacteria, typically in the home, schools, or on hospital equipment.
BacteriochlorophyllPyrrole containing pigments found in photosynthetic bacteria.
Bacteriophage1. A virus that infects and lyses certain bacteria.
BaculoviridaeFamily of insect viruses containing two subfamilies: Eubaculovirinae (occluded baculoviruses) and...
Baffle1. A flat board or plate, deflector, guide or similar device constructed or placed in flowing water or slurry...
Baffle ChamberIn incinerator design, a chamber designed to promote the settling of fly ash and coarse particulate matter by...
Baffled Flask TestTest to evaluate the potential effectiveness of a dispersant product using what is essentially an Erlenmeyer...
Bag DumpEquipment into which bags or other containers containing a powdered, granular, or other solid feedstock...
Bag FilterPressure-driven separation devices that remove particulate matter larger than 1 micrometer using an...
Bag Leak Detection GuidanceOffice of Air Quality Planning and Standards (OAQPS): Fabric Filter Bag Leak Detection Guidance, EPA...
Bag Leak Detection System1. Instrument that is capable of monitoring PM loadings in the exhaust of a fabric filter in order to detect...
Bag SlitterDevice for enclosed transfer of particulates. A bag of raw materials is placed in a hopper, the hopper is...
Bagging OperationMechanical process by which bags are filled with nonmetallic minerals.
Baghouse1. Control device that collects particulate matter by filtering the gas stream through bags. A baghouse is...
Baghouse Filter1. Large fabric bag, usually made of glass fibers, used to eliminate intermediate and large (greater than 20...
Bailer1. (BAY-ler) A 10- to 20-foot-long pipe equipped with a valve at the lower end. A bailer is used to remove...
Bait TreatmentPesticide product intended to be ingested by the target pest that kills or controls an invertebrate pest such...
Bake OvenDevice which uses heat to dry or cure coatings [40 CFR 60.311 (CFR 2013)]
Bake Oven Air SealEntry or entry vestibule to or an exit or exit vestibule from a bake oven which isolates the bake oven from...
Bakers YeastDried cells of one or more strains of the yeast Saccharomyces cerevisiae, used as a leavening in baking.
Bakken Pool OilOil produced from the Bakken, Three Forks, and Sanish Formations.
Balanced Indigenous CommunitySynonymous with the term balanced, indigenous population in the Act and means a biotic community typically...
Balanced Indigenous PopulationEcological community which: (1) Exhibits characteristics similar to those of nearby, healthy communities...
Balancing AreaA metered segment of the power system, maintained by a balancing area authority, that ensures the total of...
Balancing AuthorityResponsible entity that integrates resource plans ahead of time, maintains load-interchange-generation...
Bale BreakerDevice used to break apart a bale of aluminum scrap for further processing. Bale breakers are not used to...
BalerMachine used to compress solid wastes, primary materials, or recoverable materials, with or without binding...
BalingCompacting solid waste into blocks to reduce volume and simplify handling.
Ball ValveA valve regulated by the position of a free-floating ball that moves in response to fluid or mechanical...
Ballast1. Water, sand, or other heavy material used to give ships weight and stability.
Ballast waterFresh or salt water, sometimes containing sediments, held in tanks and cargo holds of ships to increase...
Ballistic SeparatorA machine that sorts organic from inorganic matter for composting.
Band ApplicationThe spreading of chemicals over, or next to, each row of plants in a field.
Band GapIn a semiconductor, the energy difference between the highest valence band and the lowest conduction band.
Bandwidth1. The capacity of a telecom line to carry signals. The necessary bandwidth is the amount of spectrum...
Bank Erosion1. Destruction of land area by active cutting of stream-banks. (Wash. Dep. Ecol. 1973)
Bank FiltrationWater treatment process that uses a well to recover surface water that has naturally infiltrated into ground...
Bank recalibrationMinimizing the accumulation of saved allowances available for purchase.
bank shapingRe-grading streambanks to a stable slope, placing topsoil and other materials needed for sustaining plant...
Banked Emission CreditPositive emission credits based on actual applicable production/sales volume as contained in the end of model...
Bankfull Discharge1. For a natural channel that is not adapting to hydrologic change in its watershed, it is the discharge that...
bankfull elevationThe water surface elevation within a channel corresponding to bankfull discharge.
Bankfull StageThe stage at which a stream first overflows its natural banks formed by floods with 1- to 3-year recurrence...
Banking1. Commercial Banking: This industry comprises establishments primarily engaged in accepting demand and other...
Bar1. An offshore ridge or mound of sand, gravel, or other unconsolidated material which is submerged (at least...
Bar, Billet and BloomAcid pickling operations that pickle bar, billet or bloom products.
BAR CODEA series of rectangular marks and spaces in a planned pattern. Used in records management to encode indexing...
Bar ScreenIn wastewater treatment, a device used to remove large solids.
Barbela slender elongate sensory structure protruding from the lips or jaws of certain fishes, such as catfishes...
BarbituratesA class of drugs characterized as central nervous system (CNS) depressants. Barbiturate compounds bind to the...
Barium and Barium Compounds1. Barium is a silvery-white metal which exists in nature only in ores containing mixtures of elements. It...
Barium Compounds (1.0)Includes any unique chemical substance that contains barium as part of that chemical's infrastructure. This...
Bark1. A non-technical term applied to all tissues outside the vascular cambium in woody root, stem, or branch...
BarnA large agricultural building that can be used for a variety of farm activities including storing hay, feed...
Barn CleanerUsually a chain linked system of paddles that moved manure from gutters, up a chute, into a waiting manure...
Baroclinic InstabilityCauses the cyclones and anticyclones of mid-latitude weather patterns. Exists when there is an atmospheric...
Baroclinic ZoneA region in which a temperature gradient exists on a constant pressure surface. Baroclinic zones are favored...
BarometerAn instrument that measures the air pressure of the atmosphere. Differences in air pressure are responsible...
Barometric Condensing OperationThose operations or processes directly associated with or related to the concentration and crystallization of...
Barotropic SystemA weather system in which temperature and pressure surfaces are coincident, i.e., temperature is uniform (no...
Barrel1. 42 U.S. gallons at 60 degrees Fahrenheit.
Barrel FinishingOperation in which castings, forgings, or parts pressed from metal powder are rotated in a barrel with...
barrel sampler1. Open-ended steel tube used to collect soil samples. The sampler has a sharpened end, or "shoe," that is...
Barren LandA Land cover/use category used to classify lands with limited capacity to support life and having less than 5...
Barren landsAreas characterized by bare rock, gravel, sand, silt, clay, or other earthen material, with little or no...
Barren ZoneAn area of fresh, vegetation-free bedrock around the margin of a retreating glacier that documents the recent...
Barrier1. Any material or structure that prevents or substantially delays movement of water or radionuclides toward...
Barrier Beach1. A bar essentially parallel to the shore, which has been built up so that its crest rises above the normal...
Barrier CoatingA layer of a material that obstructs or prevents passage of something through a surface that is to be...
Barrier CoveA subaqueous area adjacent to a barrier island (or submerged barrier beach) that forms a minor embayment or...
Barrier FlatA relatively flat, low-lying area that is separating the exposed (or seaward) edge of a barrier beach or...
Barrier Island1. Refers to a long, narrow island running parallel to the mainland, built up by waves and currents and...
Barrier Island HabitatA barrier island is defined as a piece of land, usually elongated and somewhat parallel to the mainland...
barrier island rolloverThe landward migration or landward transgression of a barrier island, accomplished primarily over decadal or...
barrier migration1. The movement of an entire barrier island or barrier spit in response to sea-level rise, changes in...
Barrier ReefA long, narrow coral reef, roughly parallel to the shore and separated from it by a lagoon of considerable...
barrier spit1. A barrier island that is connected at one end to the mainland bathymetry the measurement of ocean depths...
BarrowA neutered male is a barrow and the adult male is a boar.
BART-Eligible SourceAn existing stationary facility as defined in this section.
Basal ApplicationIn pesticides, the application of a chemical on plant stems or tree trunks just above the soil line.
Basal Metabolic RateMinimum level of energy required to maintain normal body functions.
BasaltConsistent year-round energy use of a facility; also refers to the minimum amount of electricity supplied...
base1. Any large group of chemicals with a pH greater than 7. Examples are ammonia and baking soda.
base cationsPositively charged ions such as magnesium, sodium, potassium, and calcium that increase pH of water (make it...
Base ClosureDOD defines major closures as installations recommended for closure with plant replacement value exceeding...
Base EngineLand-based engine to be marinized, as configured prior to marinization. [40 CFR 94.2 (CFR 2013)]
Base Excision RepairInitiation of DNA base excision repair (BER) involves a DNA glycosylase that binds the altered...
Base FilmSubstrate that is coated to produce magnetic tape.
Base FloodFlood that has a one percent chance of occurring in any given year (i.e., a flood with a magnitude equalled...
Base Flow1. Sustained flow of a stream in the absence of direct runoff. It includes natural and human-induced...
Base FluidContinuous phase or suspending medium of a drilling fluid formulation. [40 CFR 435.41 (CFR 2013)]
Base Fluid Retained on Cuttings1. As applied to BAT effluent limitations and NSPS refers to the “Determination of the Amount of Non-Aqueous...
Base FuelGeneric fuel formulated from a set of specifications to be representative of a particular fuel family.
Base GasolineAny gasoline that does not contain detergent.
Base InertiaValue expressed in mass units to represent the rotational inertia of the rotating dynamometer components...
Base Level1. Unique combination of basic engine, inertia weight class and transmission class.
Base Load1. Load level at which a gas turbine is normally operated.
Base Load Combustion TurbineStationary combustion turbine that supplies more than 40 percent of its potential electric output as...
Base Load Generating PlantTypically coal or nuclear generating units, these plants are usually committed and dispatched at constant or...
Base Load Rating1. Maximum amount of heat input (fuel) that an EGU can combust on a steady-state basis, as determined by the...
Base Metal1. A metal (such as iron) which reacts with dilute hydrochloric acid to form hydrogen.
base metalsThose metals usually considered to be of lesser value and of greater chemical reactivity compared to the...
Base Pair1. The pair of nitrogenous bases, consisting of a purine linked by hydrogen bonds to a pyrimidine, that...
Base Pair MiscodingAny DNA sequence rearrangement that results in the exchange of the original sequence with noncomplementary...
Base Program AuthorizationThe RCRA program initially made available for final authorization, reflecting federal regulations as of July...
Base Program ChecklistsThe set of checklists submitted for state base program authorization, including Checklists I, II, III, IVA...
Base Realignment and Closure SiteEPA's Base Closure and Realignment program develops policies, plans and programs to expedite the cleanup and...
Base RedevelopmentPart of the base realignments and closures process involving property transfers and environmental cleanups.
Base SamplesThe number of sites (sample size) that will fulfill the monitoring program requirements for precision and...
Base Sequence1. The sequence of purines and pyrimidines in nucleic acids and polynucleotides. It is also called nucleotide...
Base Sequence Analysis1. A method, sometimes automated, for determining the base sequence.
Base StationA land station in the land mobile service. For example, in cellular and personal communications uses, each...
Base SubstrateSurface, such as plastic or paper, to which a coating is applied.
Base Tire1. Tire size specified as standard equipment by the manufacturer on each unique combination of a vehicle's...
Base Vehicle1. Lowest priced version of each body style that makes up a car line.
Baseboard HeaterAs a type of heating equipment, a system in which either electric resistance coils or finned tubes carrying...
BasecoatCoat of colored material, usually opaque, that is applied before graining inks, glazing coats, or other...
Basecoat/ClearcoatTopcoat system applied to exterior and selected interior vehicle surfaces primarily to provide an...
Baseflow1. Groundwater discharge to the stream; the flow not accounted for by storm runoff.
Basel Convention1. The Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal...
Baseline1. The numeric level of pollution coming from a source during a particular time period, which is used as a...
Baseline ArchitectureDescribes the current (as is) state of the agency in terms of performance, business, data, services, and...
Baseline Assessment SurveyPlanned sampling or measurement of parameters at set stations or in set areas in and near disposal sites for...
Baseline Best Available Technology LimitationBAT limitations specified in § 430.24(a) (1) or (2), as applicable, and the NSPS specified in § 430.25(b) (1)...
Baseline Bioconcentration FactorFor organic chemicals, a BCF that is based on the concentration of freely dissolved chemical in the ambient...
baseline condition1. A reference condition against which changes or trends are judged; often a set of conditions that exist at...
Baseline ConfigurationUnretrofitted test configuration, tuned in accordance with the automobile manufacturer's specifications.
Baseline Consumption AllowanceConsumption allowances apportioned under §§ 82.6 and 82.19.
Baseline Data1. Initial information on a program or program components collected prior to receipt of services or...
Baseline EmissionMeaning given in § 1042.825.
Baseline gridThe fixed position of the EMAP grid as established by the position of the hexagon overlaying the United...
Baseline Lifecycle Greenhouse Gas EmissionAverage lifecycle greenhouse gas emissions for gasoline or diesel (whichever is being replaced by the...
Baseline Production AllowanceProduction allowances apportioned under §§ 82.5 and 82.17.
Baseline Risk Assessment1. A baseline risk assessment is an assessment conducted before cleanup activities begin at a site to...
baseline scenario1. In environmental economics, a scenario in which current conditions (i.e., without any policy change) are...
Baseline ValueBaseline of an economic analysis is a reference point that reflects the world without the proposed...
Baseline Visibility ConditionAverage of the five annual averages of the individual values of daily visibility for the period 2000-2004...
Baseline Volume1. Permitted capacity or, if permitted capacity cannot be determined, the actual peak capacity of a specific...
Baseline Year Emissions InventoryFor the RFP plan is the emissions inventory for the year also used as the base year for the attainment...
Baseload ElectricityAn estimate of the electricity produced from plants that are devoted to the production of baseload...
BasementHarder and usually older igneous and metamorphic rocks that underlie the main sedimentary rock sequences...
basic1. Describes a substance with a pH greater than 7. Another word for basic is alkaline.
Basic Amino AcidsAmino acids with side chains that are positively charged at physiological pH.
Basic CommoditySix crops (corn, cotton, peanuts, rice, tobacco, and wheat) that are covered by parity-based price support...
Basic EmissionTotal hydrocarbons, carbon monoxide, oxides of nitrogen, and particulates occurring in motor vehicle or...
Basic Engine1. Unique combination of manufacturer, engine displacement, number of cylinders, fuel system (e.g., type of...
Basic Format/Content CheckerA desktop tool used to check data for the 2002 inventory cycle.
Basic Oxygen FurnaceAny refractory-lined vessel in which high-purity oxygen is blown under pressure through a bath of molten...
Basic Oxygen Furnace SteelmakingProduction of steel from molten iron, steel scrap, fluxes, and various combinations thereof, in refractory...
Basic Oxygen ProcessThe most common method of steel-making where oxygen is blown through molten pig iron
Basic Oxygen Process FurnaceAny furnace with a refractory lining in which molten steel is produced by charging scrap metal, molten iron...
Basic Oxygen Process Furnace GroupCollection of BOPF shop steelmaking operating units and their control devices including the BOPF primary...
Basic Phase II Allowance AllocationFor calendar years 2000 through 2009 inclusive, allocations of allowances made by the Administrator pursuant...
Basic Research1. Theoretical or experimental investigations to advance scientific knowledge where such knowledge is...
Basic solutionWater solution with more hydroxide ions (OH-) than hydrogen ions (H+); water solutions with pH greater than...
Basic Vehicle Frontal AreaArea enclosed by the geometric projection of the basic vehicle along the longitudinal axis, which includes...
BasicityThe ability of a substance to lose an hydroxyl group or to donate an electron pair in a reaction.
BasidiomycotaA phyllum of filamentous fungi that reproduce sexually via the formation of specialized club-shaped end cells...
Basin1. An area of land that drains into a particular river, lake, bay or other body of water. Also called a...
Basin Floor FanDeposition of submarine fans on the lower slope or basin floor; fan formation is associated with the erosion...
Basin Irrigation InfrastructureInfrastructure to support water distribution in which a field or orchard is divided into basins which are...
Basis Material1. Coiled strip which is processed.
Bat White-Nose SyndromeAn emergent disease named for the white fungus, Pseudogymnoascus destructans, that infects skin of the...
batch1. A group of samples prepared at the same time in the same location using the same method.
Batch Alkaline CleaningAlkaline cleaning operations which process steel products such as coiled wire, rods, and tubes in discrete...
Batch Cleaning MachineSolvent cleaning machine in which individual parts or a set of parts move through the entire cleaning cycle...
Batch Compressor AcceptanceNumber of non-complying compressors in the batch sample is less than or equal to the acceptance number as...
Batch Copper Converter1. Pierce-Smith converter or Hoboken converter in which copper matte is oxidized to form blister copper by a...
Batch Cycle1. Manufacturing a product from start to finish in a batch unit operation. [40 CFR 63.1082 (CFR 2013)]
Batch Descaling OperationDescaling operations in which the products are processed in discrete batches.
Batch Distillation OperationNoncontinuous distillation operation in which a discrete quantity or batch of liquid feed is charged into a...
Batch Electrolytic Process TankTank used for an electrolytic process in which a part or group of parts, typically mounted on racks or placed...
Batch Emission Episode1. Discrete venting episode that may be associated with a single unit operation. A unit operation may have...
Batch FermentationFermentation conducted from start to finish in a single vessel without addition to, or removal of, a major...
Batch Front End Process VentProcess vent with annual organic HAP emissions greater than 225 kilograms per year from a batch unit...
Batch (General)1. Specific quantity or lot of a test, control, or reference substance that has been characterized according...
Batch Hospital/Medical/Infectious Waste IncineratorHMIWI that is designed such that neither waste charging nor ash removal can occur during combustion.
Batch Mass Input LimitationEnforceable restriction on the total mass of HAP or material that can be input to a batch unit operation in...
Batch ModeDiscontinuous bulk movement of material through a unit operation. Mass, temperature, concentration, and other...
Batch Municipal Waste Combustion UnitMunicipal waste combustion unit designed so it cannot combust municipal solid waste continuously 24 hours per...
Batch Operation1. Noncontinuous operation involving intermittent or discontinuous feed into equipment, and, in general...
Batch Pickling LineCollection of equipment and tanks configured for pickling metal in any form but usually in discrete shapes...
Batch Pickling OperationPickling operations which process steel products such as coiled wire, rods, and tubes in discrete batches or...
Batch, Pipe and TubeDescaling operations that remove surface scale from pipe and tube products in batch processes.
Batch, Preparation (radiochemistry)A set of up to 20 environmental field samples that are prepared and/or analyzed together with the same...
Batch Process1. A treatment process in which a tank or reactor is filled, the water is treated or a chemical solution is...
Batch Process Unit Tank CoverSolid structure made of an impervious material that is designed to cover the entire open surface of a tank or...
Batch Process Vent1. Process vent with annual organic HAP emissions greater than 225 kilograms per year from a batch unit...
Batch Product-Process Equipment Train1. Collection of equipment (e.g., connectors, reactors, valves, pumps, etc.) configured to produce a specific...
Batch ReactorContainer in which a reaction is performed without any inflow or outflow or material during the reaction
Batch RefrigerantSingle bulk cylinder of refrigerant after all reclamation has been completed prior to packaging or shipping...
Batch Rejection1. Number of noncomplying vehicles in the batch sample is greater than or equal to the rejection number as...
Batch Renewable Fuel PathwayEach combination of approved pathway, equivalence value as determined under § 80.1415, and verification...
Batch Renewable Identification NumberRenewable Identification Number that represents multiple gallon-RINs. [40 CFR 80.1101 (CFR 2013)]
Batch, Rod and WireDescaling operations that remove surface scale from rod and wire products in batch processes.
Batch Sample1. Collection of compressors that are drawn from a batch.
Batch Sample Size1. Number of compressors of the same category or configuration which is randomly drawn from the batch sample...
Batch Sequence Acceptance1. Number of rejected batches in the sequence is less than or equal to the sequence acceptable number as...
Batch Sequence RejectionNumber of rejected batches in a sequence is greater than or equal to the sequence rejection number as...
Batch, Sheet and PlateDescaling operations that remove surface scale from sheet and plate products in batch processes.
Batch Size1. Number, as designated by the Administrator in the test request, of compressors of the same category or...
Batch Unit Operation1. Unit operation involving intermittent or discontinuous feed into equipment and, in general, involves the...
Batch UploadUpload that submits one "batch" file instead of multiple files.
Batch Vehicle AcceptanceNumber of noncomplying vehicles in the batch sample is less than or equal to the acceptance number as...
Bath1. a tank of chemicals in which a metal part is dipped to apply a metal coating.
Bath ComponentTrade or brand name of each component(s) in trivalent chromium plating baths. For trivalent chromium baths...
Bath dumpsChemicals that have degraded or become contaminated over time and no longer serve their function.
Bathroom and Tile CleanerProduct designed to clean tile or surfaces in bathrooms. “Bathroom and tile cleaner” does not include...
Bathyl Deep CirculationDeep, slow circulation in the bathyl zone driven by horizontal differences in density of water masses. Water...
Bathymetry1. The varying physical characteristics--including depth, contour and shape--of the bottom of the Bay and...
Battery1. A device consisting of one or more electrically connected electrochemical cells which is designed to...
Battery CellSimplest operating unit in a storage battery. It consists of one or more positive electrodes or plates, an...
Battery ChargeThe process of adding electrical energy to a battery.
Battery ConfigurationElectrochemical type, voltage, capacity (in Watt-hours at the c/3 rate), and physical characteristics of the...
Battery Manufacturing OperationAll of the specific processes used to produce a battery including the manufacture of anodes and cathodes and...
Battery PackThis high-voltage battery stores energy generated from regenerative braking and provides supplemental power...
Bauxite1. A naturally occurring, heterogeneous material composed primarily of one or more aluminum hydroxide...
Bay1. A recess or inlet in the shore of a sea or lake between two capes or headlands, not as large as a gulf but...
Bay jurisdictionsDelaware, Maryland, New York, Pennsylvania, Virginia, West Virginia and the District of Columbia.
Bay SegmentSubunits of the Chesapeake Bay estuary that were derived on the basis of specific selection criteria related...
Bayer Process1. Extracts alumina from bauxite ore
Bayesian Analysis1. Bayesian analysis is a method of statistical inference in which the knowledge of prior events is used to...
Bayesian Belief NetworkA probabilistic model, comprised of a directed graph and associated probability tables, which enables...
Bayesian inferenceInference is using data to learn about some uncertain quantity. Bayes’ theorem describes how to update a...
Bayesian information criterionAlso known as the Schwartz Criterion or BIC, a statistical criteria using Bayes theorem.
Bayesian Monte CarloCombines a prior probability distribution and a likelihood function to yield a posterior distribution.
Bayesian Statistical Method1. Statistical methods characterized by the updating of prior knowledge and estimation of conditional...
Baylisascaris InfectionCaused by roundworm intestinal parasite found in a variety of animals ; disease may be passed between people...
BayscapeColorful, environmentally sound landscapes that provide wildlife habitat; slow and filter polluted runoff...
BayScapesColorful, environmentally sound landscapes that provide wildlife habitat; slow and filter polluted runoff...
B-Cell DifferentiationIn mammalian bone marrow, B-Cell Development consists of progressive differentiation from CD34+ progenitor...
B-Cell Receptor BindingA process that involves the binding of an antigen to the transmembrane B cell receptor, an IgD molecule...
beach1. The unconsolidated material that covers a gently sloping zone extending landward from the low water line...
Beach and Dune HabitatThe Beach is an area of land at the ocean shore, marked by an accumulation of sand, stone, and other sediment...
Beach BermThe natural bench or platform lying below the main beach slope and above the foreshore.
Beach Monitoring TechnologyDetects pathogen indicator organisms in fresh, brackish, and/or marine/estuarine water. The analytical...
Beach NotificationAn Exchange Network data exchange that allows for the reporting of beach metadata, contact information, and...
beach nourishment1. Large quantities of sand added to the beach system to offset losses caused by wave erosion.
Beach RidgeA low, essentially continuous mound of beach (or beach-and-dune material) heaped up by the action of waves...
BeadRubber-covered strands of wire, wound into a circular form, which ensure a seal between a tire and the rim of...
Bead Cementing OperationSystem that is used to apply cement to the bead rubber before or after it is wound into its final circular...
BeadingThe process in three-piece can assembly where the walls of the cans are strengthened by the formation of...
Beam Pumping UnitThere are four basic types of beam pumping units. Three involve a walking beam, which seesaws to provide the...
Bean SheetCommon term for a pesticide data package record.
BearThe Bear River Basin. Idaho, Utah, Wyoming. Area = 7310 sq.mi.
Bearing CoatingCoating applied to an antifriction bearing, a bearing housing, or the area adjacent to such a bearing in...
Beaufort Scale1. A scale of wind strength based on visual assessment of the effects of wind on seas and vegetation.
Beauveria bassianaBeauveria bassiana is a natural fungus present in soils around the world functioning as a parasite on various...
BecquerelThe special name given to the SI unit of activity (s^-1) used to measure the number of nuclear...
Bed LoadSediment particles resting on or near the channel bottom that are pushed or rolled along by the flow of water.
Bed MaterialThe sediment mixture of which a streambed, lake, pond, reservoir, or estuary bottom is composed.
Bedded PackOpen housing in a barn that is commonly used in conjunction with an outside feeding area.
Bedding1. Material used to absorb moisture and provide cushion. It is easily cleaned to provide a clean, dry surface...
Bedding and Litter1. Bedding is material used to absorb moisture and provide cushion. It is easily cleaned to provide a clean...
Bedding TechniqueA site preparation technique whereby a small ridge of surface soil is formed to provide an elevated planting...
Bedload1. Sediment carried along a channel bed by sliding, rolling, or bouncing.
Bedload SedimentPortion of sediment load transported downstream by sliding, rolling, bouncing along the channel bottom...
Bedrock1. Bedrock is the rock that underlies the soil; it can be permeable or non-permeable. See also Confining...
bedrock beachThe bare rock that is washed by the lake waves.
bedrock gladeThin-soiled plant communities consisting of a few trees, scattered shrubs, or thickets and a grassy sedge...
Bee DisordersIncludes bacterial, viral, and protozoan diseases, and parasitic mites as well as disorders from currently...
BeefMeat from cattle (bovine species) other than calves. Meat from calves is called veal.
Beet ProcessingProcessing of beets into the following product styles: Canned and peeled, whole, sliced, diced, French style...
Beet SugarSucrose which is obtained from the roots of the sugar beet, a cultivated form of the common beet, Beta...
Before-After DesignsThe elementary quasi-experimental design known as the before-after design involves the measurement of...
Begin Actual Construction1. In general, initiation of physical on-site construction activities on an emissions unit which are of a...
Beginning DateThe term used in the querying process to denote the earliest date the Sample Start Date may be in order for...
Behavioral ResistanceBehavioral response of the pest to control agents that enables it to avoid being harmed by the control agent.
Behind-the-Counter-DrugThese drugs do not require a prescription, but do require a pharmacist's approval to purchase them. Applied...
BeliefAn unmeasurable and unprovable assertion based on one or more fundamental assumptions. (O'Connell 1974)
Bell-Shaped CurveA distribution with roughly the shape of a bell; often used in reference to the normal distribution but...
Below - ground TankA tank with its entire surface area below the surface and not visible; however, a fraction of its associated...
Below Limit of DetectionDue to limitations of chemical analysis procedures, small concentrations cannot be precisely measured. These...
Belowground BiomassThe total amount of organic matter present in tree and plant structures located below ground, such as the...
Belowground ReleaseAny release to the subsurface of the land and to groundwater. This includes, but is not limited to, releases...
Belowground Storage FacilityTank or other container located other than as defined as “Aboveground”.
Belowground Storage Unit1. A tank or other container located completely below the natural grade of the earth.
Below-Ground Wood PreservativeCoating that is formulated and recommended to protect below-ground wood from decay or insect attack and that...
Belt ConveyorConveying device that transports material from one location to another by means of an endless belt that is...
BENEPA's computer model for analyzing a violator's economic gain from not complying with the law.
BenazeprilA carboxyl-containing angiotensin-converting enzyme (ACE) inhibitor with antihypertensive activity. As a...
BenchArea of relatively level land on the flank of an elevation such as a hill, ridge, or mountain where the slope...
benchmarkA concentration or other accepted measure against which environmental conditions are compared.
Benchmark Concentration1. A dose or concentration that produces a predetermined change in response rate of an adverse effect (called...
Benchmark Concentration Limit1. A statistical lower confidence limit on the dose or concentration at the BMD or BMC, respectively.
Benchmark Dose1. A dose or concentration that produces a predetermined change in response rate of an adverse effect (called...
Benchmark Dose 10Benchmark Dose associated with a 10% response adjusted for background.
Benchmark Dose Limit1. A statistical lower confidence limit on the dose or concentration at the BMD or BMC, respectively.
benchmark dose lower confidence limitA statistical lower confidence limit on the dose or concentration at the BMD.
Benchmark Dose or ConcentrationAn exposure due to a dose or concentration of a substance associated with a specified low incidence of risk...
Benchmark Reasonable Further Progress PlanReasonable further progress plan that requires generally linear emission reductions in pollutants from the...
Benchmark Response1. An adverse effect, used to define a benchmark dose from which an RfD (or RfC) can be developed. The change...
Benchmark SoilA benchmark soil is one of large extent, holds a key position in the soil classification system, or is of...
Benchmark-Dose ApproachThe benchmark dose (BMD) approach, which involves dose-response modeling to obtain BMDs, i.e., dose levels...
BenchmarkingMeasuring progress toward a goal at intervals prior to the anticipated attainment of the goal.
BenchmarksMeasures of progress toward a goal, taken at intervals prior to the program's completion or the anticipated...
Bench-Scale Batch Process1. Batch process (other than a research and development facility) that is capable of being located on a...
Bench-Scale Operation1. Laboratory testing of materials, methods, or processes on a small scale, such as on a laboratory worktable.
Bench-Scale ProcedureAny operation that is small enough to be performed on a bench, table, or similar structure so that the...
Bench-Scale TestLaboratory testing of potential cleanup technologies.
Bench-Scale TestsLaboratory testing of potential cleanup technologies
Beneficence"Persons are treated in an ethical manner not only by respecting their decisions and protecting them from...
Beneficial InsectInsect species that provide functions valued by humankind such as pest control and pollination
Beneficial LandscapingUsing different landscaping techniques to achieve all kind of benefits (e.g., decrease of maintenance costs...
Beneficial MicroorganismBacteria, yeasts, and other microrganisms that benefit crop health and yield and are useful in human...
Beneficial OrganismAny pollinating insect, or any pest predator, parasite, pathogen or other biological control agent which...
Beneficial Use1. Taken from Section 303(c)(2)(A) of the Clean Water Act and state statutes, these include municipal...
Beneficial usesUses of Lake Erie that are valued by society, such as water quality that is suitable for drinking, swimming...
Beneficial Water UseA use of water resources that benefits people or nature. State law may define beneficial use.
BeneficiaryIn common usage, a beneficiary is "a person who receives benefits." However, because a single person with...
Beneficiary ClassificationClassification of the different types of interests individuals, groups of people, or organizations that drive...
Beneficiation1. Improvement of the grade of ores by milling, flotation, sintering, gravity concentration, or other...
Beneficiation AreaArea of land used to stockpile ore immediately before the beneficiation process, the area of land used for...
Benefit1. In the ESRP, shorthand notation for ecological benefit.
benefit indicatorA non-monetary measure based on economic theory and empirical evidence of value that indicates a relative...
benefit transfer1. Techniques to estimate values of ecosystem goods and services based on previously conducted valuation...
Benefit transfers"[T]he use of research results from pre-existing primary studies at one or more sites or policy contexts...
benefit-cost analysis1. A formal quantitative and sometimes qualitative evaluation of the benefits to be derived from a decision...
Benefit-cost ratioThe ratio of the net present value (NPV) of benefits associated with a project or proposal, relative to the...
Benefits1. Net program outcomes, usually translated into monetary terms. Benefits may include both direct and...
Benefits ManagementBenefits Management designs, develops, and implements benefit programs that attract, retain and support...
Benefits Transfer ApproachThe use of estimated values of environmental quality changes drawn from primary (usually published) studies...
Benign Tumor1. A tumor that does not spread to a secondary localization, but may impair normal biological function...
Benioff ZoneA dipping planar (flat) zone of earthquakes that is produced by the interaction of a downgoing oceanic...
bent subassemblyA device that can be used in horizontal directional drilling to change the drilling path. It attached as part...
Benthic1. Of or pertaining to the bottom of a body of water.
Benthic BioturbationTubes, holes, furrows, and small mounds formed by the digging, feeding, and movement of benthic fauna. These...
Benthic Boundary LayerThe layer formed at the interface between the lower water column and the benthic substrate.
Benthic BurrowTubes, holes, furrows, and small mounds formed by the digging, feeding, and movement of benthic fauna. These...
Benthic Community1. The community of organisms dwelling at the bottom of a pond, river, lake, or ocean. (pertains to...
Benthic EnvironmentThe environment at the bottom of lakes, rivers, estuaries, or oceans.
Benthic flux ratesFlux of nutrients across the sediment-water interface in a waterbody.
Benthic InvertebrateAny of the insects, mollusks, crustaceans, worms, and other organisms without a backbone that live in, on, or...
Benthic InvertebratesThose animals without backbones that live on or in the sediments of a lake, pond, river, etc.
Benthic macroinvertebrateBottom-dwelling invertebrates that can be seen with the unaided eye. Benthic macroinvertebrates are used by...
Benthic MacroinvertebratesAquatic larval stages of insects, such as dragonfly larvae and aquatic beetles; crustaceans such as crayfish...
Benthic MicroorganismThe group of microorganisms inhabiting the bottom of an aquatic environment. They are useful as indicators of...
benthic organism1. Any of a diverse group of aquatic plants and animals that lives on the bottom of marine and fresh bodies...
Benthic Organisms1. Organisms living in, or on, bottom substrates in aquatic ecosystems.
Benthic RegionThe bottom of a body of water. This region supports the benthos, a type of life that not only lives upon, but...
Benthic Zone1. The bottom layer of a body of water.
Benthos1. The name used to describe the plants and animals (without backbones) living in the streambed or benthic...
Bentonite1. A colloidal clay, largely made up of the mineral sodium montmorillonite, a hydrated aluminum silicate...
Bentsen WasteGeothermal exploration, development, and production waste exempt from RCRA Subtitle C regulation.
Bentsen WastesGeothermal exploration, development, and production waste exempt from RCRA Subtitle C regulation.
BenzazepinesBicyclic structure consisting of fused benzene and azepine rings; many compounds with this structure react...
Benzene1. Please see the ATSDR fact sheet for benzene.
Benzene Soluble OrganicsOrganic compounds that dissolve in benzene
Benzene Toluene Ethylbenzene And XyleneBTEX is the term used for benzene, toluene, ethylbenzene, and xylene-volatile aromatic compounds typically...
BenzidineCompound benzidine and its salts as identified by the chemical name 4,4′-diaminobiphenyl.
Benzo(a)PyreneA potent mutagen and carcinogen. It is a public health concern because of its possible effects on industrial...
Benzodiazepines1. Drugs from this chemical class are used for their central nervous system depressant properties including...
Bequest Value1. Value we place on a thing because we want it to be passed down to future generations.
Berberis thunbergiiJapanese barberry is a dense, deciduous, spiny shrub that grows 2 to 8 ft. high. The branches are brown...
Bergeron ProcessThe process by which ice crystals in a cloud grow at the expense of supercooled liquid water droplets.
berm1. A commonly occurring, low, impermanent, nearly horizontal ledge or narrow terrace on the backshore of a...
BermsEither dirt, concrete or other constructed embankments that are commonly employed for secondary containment...
Bernoulli trialA single random event for which there are two and only two possible outcomes that are mutually exclusive and...
BerylliosisLung disease caused by exposure to metallic beryllium or its soluble salts.
BerylliumAn metal hazardous to human health when inhaled as an airborne pollutant. It is discharged by machine shops...
Beryllium AlloyAny metal to which beryllium has been added in order to increase its beryllium content and which contains...
Beryllium and Beryllium Compounds1. Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust...
Beryllium Compounds (0.1)Includes any unique chemical substance that contains beryllium as part of that chemical's infrastructure.
Beryllium Copper AlloyAny copper alloy that is alloyed to contain 0.10 percent or greater beryllium.
Beryllium Extraction PlantFacility chemically processing beryllium ore to beryllium metal, alloy, or oxide, or performing any of the...
Beryllium OreAny naturally occurring material mined or gathered for its beryllium content.
Beryllium PropellantAny propellant incorporating beryllium.
Beryllium WorkerA current worker who is or was exposed or potentially exposed to airborne concentrations of beryllium.
Beryllium-Containing WasteMaterial contaminated with beryllium and/or beryllium compounds used or generated during any process or...
Best attainable useThe "use" of a water body is the most fundamental articulation of its role in the aquatic and human...
Best Attainable Water Body UseThe "use" of a water body is the most fundamental articulation of its role in the aquatic and human...
Best Available Control MeasureA term used to refer to the most effective measures (according to EPA guidance) for controlling small or...
Best Available Control MeasuresA term used to refer to the most effective measures (according to EPA guidance) for controlling small or...
Best Available Control Technology1. The application of the most advanced methods, systems, and techniques for eliminating or minimizing...
Best Available Retrofit Technology1. “An emission limitation based on the degree of reduction achievable through the application of the best...
Best Available ScienceScience that is reliable and unbiased. Use of best available science involves the use of supporting studies...
Best Available Technology1. The water treatment(s) that USEPA certifies to be the most effective for removing a contaminant.
Best Available Technology Economically Achievable1. Originally described under Section 304(b)(2)(B) of the Clean Water Act, this level of control is generally...
Best Available Technology (regulatory)The best technology, treatment techniques, or other means which the Administrator finds, after examination...
best caseThe situation or input for which an algorithm or data structure takes the least time or resources.
Best Control TechnologyA series of EPA-defined technologies to control the discharge or emission of a pollutant
Best Conventional Pollutant Control Technology1. Technology-based standard for the discharge from existing industrial point sources of conventional...
Best Demonstrated Available Technology1. A BDAT is a technology that has demonstrated the ability to reduce a particular contaminant to a lower...
Best Management Practice1. A method that has been determined to be an effective, practical means of preventing or reducing pollution...
Best Management Practices1. Procedures or controls other than effluent limitations to prevent or reduce pollution of surface water...
Best Management Practices (treatment technology)For purposes of the ELG Database, best management practices include treatment requirements, operating...
Best Practicable Control Technology Currently Available1. The first level of technology-based standards established by the CWA to control pollutants discharged to...
Best Practical Wastewater Treatment Technology1. The technology in which the EPA has set effluent limitations for conventional,toxic, and non-conventional...
Best PracticesNew ideas or lessons learned about effective program activities that have been developed and implemented in...
Best Professional Judgment1. The method used by permit writers to develop technology-based NPDES permit conditions on a case-by-case...
Best Tracer MethodMethod for estimating soil ingestion that allows for the selection of the most recoverable tracer for a...
Beta, (β)The tolerated probability of a "false negative" (i.e., Type II error). See False Negative. {ORD} {OW/EAD}...
beta distribution1. The general formula for the probability density function of the beta distribution is [See PDF page 125 for...
Beta Diversityas change along an environmental gradient or among the different communities of a landscape.
beta error1. The probability of a type II (false-negative) error. In hypothesis testing, β is the probability of...
Beta Particle1. An electron or positron emitted by the nucleus of a radioactive atom. Beta particles can be stopped by a...
Beta Radiation EffectA Beta Radiation Effect involves biological damage caused by beta particles emitted from a radioactive...
Beta TestingPersons outside the project group use thesoftware as they would in normal operation and record any anomalies...
Beta-Binomial Distribution1. A statistical distribution of clustered values, e.g., measures on offspring in a litter, where the average...
Better Assessment Science IntegratingA computer-run tool that contains an assessment and planning component that allows users to organize and...

1,313 of 30,736 terms in Environment terminology (MLC-0121). Request the full dataset.