Environment terminology · MLC-0121

Environment terms: C (3,357)

Page 5 of 7

Complete ComplaintWritten statement that contains the complainant’s name and address and describes the agency’s alleged...
Complete Exposure PathwayA complete exposure pathway is how a chemical can be traced, or expected to travel, from a source to a plant...
Complete Mix DigesterA controlled temperature, constant volume, mechanically mixed vessel designed to maximize biological...
Complete On-Site ConstructionAll necessary collection system components and air pollution control devices identified in the final control...
Complete StreetsRequires agencies to balance the needs of all users-including pedestrians, bicyclists, motorists, transit...
Complete Treatment1. A method of treating water which consists of the addition of coagulant chemicals, flash mixing...
Complete Vehicle1. Vehicle meeting the definition of complete vehicle in 40 CFR 1037.801 when it is first sold as a vehicle...
Complete Waste Treatment SystemComplete waste treatment system consists of all the treatment works necessary to meet the requirements of...
Completed Manufacturing Cycle1. Completed and ready for shipment (whether or not packaged).
Completely Buried TankAny container completely below grade and covered with earth, sand, gravel, asphalt, or other material...
Completely Closed Drain SystemIndividual drain system that is not open to the atmosphere and is equipped and operated with a closed vent...
Completely Destroy Controlled Substance1. Cause the expiration of a controlled substance at a destruction efficiency of 98 percent or greater, using...
Completely Destroyed SubstanceDestroyed with a destruction efficiency of 99.99 percent or greater.
Completely Mixed ConditionA condition in which no measurable difference in the concentration of a pollutant exists across a transect of...
Completely Recaptured Fluorinated Greenhouse Gas99.99 percent or greater of each fluorinated GHG is removed from a stream.
Completeness1. A measure of the amount of valid data obtained from a measurement system.
Completion Combustion DeviceIgnition device, installed horizontally or vertically, used in exploration and production operations to...
Completion Date1. The date and time on which the strategy run was most recently completed.
Completion DatesThe official date a removal or response action has been completed at a site.
Complex Fabric Manufacturing Operation“Simple” unit processes (desizing, fiber preparation and dyeing) plus any additional manufacturing operations...
Complex FacilityFacility possessing a combination of transportation-related and non-transportation-related components that is...
Complex numberComprised of a real and imaginary part.
Complex resistivityA geophysical effect, also the basis of the CR method, in which polarization within the medium results in the...
Complex SlaughterhouseSlaughterhouse that provides extensive processing of the by-products of meat slaughtering. A complex...
Complex Systems ScienceScientific study of the characteristics and workings of complex systems.
Complex TerrainTypically used to refer to mountainous terrain. In general usage, it may also refer to coastal regions and...
Complex VirusVirus with an asymmetrical capsid
Complexation1. Formation of a group of compounds in which a part of the molecular bonding between compounds is of the...
Complexing AgentAn organic chemical which combines with metallic inorganic ions, forming compounds usually having a center...
Complexity1. The opposite of simplicity. Complex systems tend to have a large number of variables, multiple parts...
Complexity TheoryOrganizing theory which attempts to understand complex systems as they are without breaking them down into...
Compliance1. The act of meeting all state and federal drinking water regulations.
Compliance & Enforcement1. Activities supporting all EPA Pollution Prevention and Control Programs through the direct monitoring and...
Compliance Account1. An Allowance Tracking System account, established by the Administrator under § 73.31(a) or (b) of this...
Compliance ApplicationCompliance certification application submitted to the Administrator pursuant to section 8(d)(1) of the WIPP...
Compliance AssessmentAnalysis conducted to determine compliance with § 191.15, and part 191, subpart C of this chapter.
Compliance Assistance1. Activities to support regulated entities in voluntarily complying with environmental standards, permits...
Compliance Assurance MonitoringAny form of collecting data on a routine basis to determine or otherwise assess compliance with emission...
Compliance Audit PolicyThe Audit Policy provides major incentives for regulated entities that voluntarily discover, promptly...
Compliance Certification1. A a submission to the Administrator or permitting authority, as appropriate, that is required by this...
Compliance CoalAny coal that emits less than 1.2 pounds of sulfur dioxide per million Btu when burned.
Compliance CoatingA coating whose volatile organic compound content does not exceed that allowed by regulation.
Compliance costThe private cost that a regulated entity incurs to comply with a regulation - for instance, through the...
Compliance Cycle1. Thee nine-year calendar year cycle during which public water systems must monitor. Each compliance cycle...
Compliance Date1. EPA determined dates for certain compliance actions by the regulated community or response by the EPA.
Compliance EquipmentMonitoring equipment used by an owner or operator of an affected source under this subpart to demonstrate...
Compliance Evaluation InspectionThe compliance evaluation inspection (CEI) is an on-site evaluation of a hazardous waste handler's compliance...
Compliance IncentiveEPA promotes compliance by providing compliance incentives -- policies and programs that reduce or waive...
Compliance IncentivesPolicies and programs that eliminate, reduce or waive penalties under certain conditions for business...
Compliance LevelFor an engine family is determined by averaging the in-use test results from each engine.
Compliance Monitoring1. Actions to monitor compliance with rules, including audits and inspections as well as direct measurement...
Compliance Period1. A three year calendar period within a compliance cycle. Each compliance cycle has three three-year...
Compliance Ratio1. Ratio of the actual HAP loss in gallons from the previous 12 operating months to an allowable HAP loss in...
Compliance Recordkeeping Date1. Date on which monthly compliance recordkeeping begins. For existing sources, recordkeeping typically...
Compliance Schedule1. A schedule of remedial measures included in a permit or an enforcement order, including a sequence of...
Compliance Use DateThe first calendar year for which an allowance may be used for purposes of meeting a source's Acid Rain...
Compliance/Conformance Audit1. A compliance audit checks to see if an entity meets an applicable standard and/or set of criteria of an...
Compliant Coating/Contact AdhesiveFinishing material, contact adhesive, or strippable booth coating that meets the emission limits specified in...
Component1. A group of related elements reported together within the XML document. (Within the XML schema, this is...
Component PartObject other than a panel that contains one or more composite wood products and is used in the construction...
Components Not SpecifiedIf a permit component is not specified this means the facility did not submit the component type to EPA.
CompositaeFlowering plant family which includes daisies
Composite CorePlatform for making hardwood plywood or laminated products that consists of particleboard and/or medium...
Composite DataData from multiple facilities performing the same operation that have been combined or averaged in some...
Composite/ Grab NumberA numeric value representing the total number of grab samples in a composite sample.
Composite MeasureA measure constructed using several alternate measures of the same phenomenon.
Composite Mesh PadType of control device similar to a mesh pad mist eliminator except that the device is designed with multiple...
Composite Mesh-Pad SystemAdd-on air pollution control device typically consisting of several mesh-pad stages. The purpose of the first...
Composite MethodThe method by which a composite of two or more samples is created. View the entire Composite Method reference...
Composite Nitrogen Oxides StandardFor a manufacturer which elects to average lightduty trucks subject to the NOX standard of...
Composite Particulate StandardFor a manufacturer which elects to average diesel light-duty vehicles and diesel light-duty trucks together...
Composite Sample1. Sample composed of two or more discrete samples. The aggregate sample will reflect the average water...
Composite Samples(come-PAH-zit) A collection of individual samples obtained at regular intervals, usually every one or two...
Composite Sampling1. Sampling method used where several samples are physically mixed into a larger composite sample. The entire...
Composite StatisticStatistics (e.g. average, maximum, minimum) and performance types (e.g., accuracy, precision) that STORET may...
composite underground storage tankA fiberglass coated steel tank.
Composite Wood Product1. Include, but are not limited to, plywood, veneer, particleboard, molded particleboard, oriented...
Composite Wood Product TypeType of composite wood product, or group of composite wood products, made by the same panel producer with the...
Composite Wood Products ImporterAny person or entity who imports composite wood products, component parts, or finished goods into the customs...
CompositesWater samples comprised of a series of equal volume samples taken over interval time periods (temporal...
Composition (structure)The composition of the taxanomic grouping such as fish, algae, or macroinvertebrates relating primarily to...
Compost1. Decomposed organic material that is produced when bacteria in soil break down garbage and biodegradable...
compost amendmentOrganic matter that is added to soil to improve infiltration.
Composting1. The controlled biological decomposition of organic material in the presence of air to form a humus- like...
Composting Facilities1. Refers to an offsite facility where the organic component of municipal solid scraps is biologically...
Composting FacilityOffsite facility where the organic component of municipal solid scraps is biologically decomposed under...
Composting PadA concrete or hard packed surface that provides an area on which manure and discarded feed may be composted...
Compound1. A substance composed of two or more elements whose composition is constant. For example, table salt...
Compounding Unit1. Unit operation which blends, melts, and resolidifies solid polymers for the purpose of incorporating...
CompoundsMixtures containing 2 or more parts. Sulfur dioxide contains sulfur and oxygen, and nitrogen oxides contain...
Comprehensive Environmental EvaluationStudy of the reasonably foreseeable potential effects of a proposed activity on the Antarctic environment...
Comprehensive Environmental Response, Compensation & Liability ActTo provide for liability, compensation, cleanup, and emergency response for hazardous substances released...
Comprehensive Environmental Response Compensation and Liability Act Criminal Litigation1. A judicial action charging criminal violation(s) of CERCLA authority. Such cases typically cite (but are...
Comprehensive Environmental Response, Compensation and Liability Information SystemComprehensive Environmental Response, Compensation and Liability Information System is a database maintained...
Comprehensive Environmental Response, Compensation, and Liability Information System 3The newest version of the Comprehensive Environmental Response, Compensation, and Liability Information...
Comprehensive environmental reviewA stage in the environmental review process that involves gathering and analyzing data on environmental...
Comprehensive General Liability InsuranceThis policy provides broad protection against situations in which a business must defend itself against...
Comprehensive Performance EvaluationThorough review and analysis of a treatment plant’s performance-based capabilities and associated...
Comprehensive Performance TestingThe initial and periodic evaluation procedure for demonstrating compliance with the national emission...
Comprehensive Procurement GuidelineThrough the Comprehensive Procurement Guideline (CPG), EPA designates items that must contain recycled...
Comprehensive Procurement GuidelinesA list, updated every two years, which designates items with recycled content that procuring agencies should...
COMPREHENSIVE RECORDS SCHEDULEA schedule or collection of schedules based on NARA-approved disposition authorities and issued as a...
Comprehensive State Groundwater Protection ProgramA groundwater management strategy developed by a state. EPA reviews CSGWPPs and "endorses" those that...
Comprehensive Title V Permit ProgramA program approved by the Administrator under part 70 of this chapter or a program promulgated for EPA permit...
Compressed Natural GasAn alternative fuel for motor vehicles; considered one of the cleanest because of low hydrocarbon emissions...
CompressibilityThe relative volume reduction that geological material can undergo when a force is applied or water is...
Compression MoldingCompression molding is a common method for forming thermosets and is rarely used for thermoplastics, except...
Compression WoodAbnormal wood formed on the lower side of branches and inclined trunks of softwood trees. Compression wood is...
Compressional waveCompressional acoustic waves (P) are propagated in the same direction as particle displacement; they are...
Compression-Ignition Engine1. Relating to a type of reciprocating, internal-combustion engine that is not a spark-ignition engine. [40...
Compressor1. Any machine for raising the pressure of a natural gas or CO2 by drawing in low pressure natural gas or CO2...
Compressor AcceptanceMeasured noise emissions of the compressor, when measured in accordance with the applicable procedure...
Compressor ConfigurationBasic classification unit of a manufacturer's product line and is comprised of compressor lines, models or...
Compressor Configuration CategoryGroup of compressor configurations which are identical in all aspects with respect to the parameters listed...
Compressor ModeOperational and pressurized status of a compressor. For both centrifugal compressors and reciprocating...
Compressor SourceSource of certain venting or leaking emissions from a centrifugal or reciprocating compressor. For...
Compressor Station1. Any combination of facilities that supply the energy to move gas in transmission or distribution lines or...
CompromiseIn relationship to an electronic signature device, refers to when the device's code or mechanism is available...
Compton scatteringThe inelastic scattering of gamma photons by orbital electrons; Compton scattering is related to electron...
Computational BiologyField of biology concerned with the development of techniques for the collection and manipulation of...
Computational ComplexityA measure of the amount of computer effort entailed in carrying out a computation.
Computational ModelModels that use measurable variables, numerical inputs, and mathematical relationships to produce...
Computational ModelsTerm that refers to computerized predictive tools. Sometimes referred to as "in silico" models.
Computational ToxicologyThe application of mathematical and computer models and molecular biological approaches to improve the...
Computed TomographyA noninvasive medical examination or procedure that uses specialized x-rays equipment to produce...
COMPUTERAn electronic device designed to accept data (input), perform prescribed mathematical and logical operations...
Computer and Electronic Product ManufacturingIndustries in the Computer and Electronic Product Manufacturing subsector group establishments that...
COMPUTER ARCHITECTUREThe organizational structure of a computer system, including hardware and software.
Computer Code DevelopmentDevelopment of instructions, written in the syntax of a computer language, which provide the computer with a...
Computer Code VerificationExamination of the algorithms and numerical technique in the computer code to ascertain that they truly...
COMPUTER INPUT MICROFILMMicrofilm containing data suitable for direct input into a computer.
Computer Model1. A model in which the mathematical operations are carried out on a computer.
COMPUTER OUTPUT MICROFILMMicrofilm containing data converted and recorded directly from a computer. Generally used instead of hard...
COMPUTER OUTPUT MICROFILMERA device for converting data from a computer into human-readable language and recording it onto microfilm.
Computer Paper/PrintoutRefers to a type of paper used in manifold business forms and produced in rolls and/or fan folded. It is used...
Computer Program1. A systematic plan for the automatic solution of a problem by a computer.
COMPUTER SECURITYThe protection of the information and physical assets of a computer system.
Computer Software DocumentationOwner’s manuals, user’s manuals, installation instructions, operating instructions, and other similar items...
COMPUTER SYSTEMA configuration, or working combination, of hardware, software, and data communication devices.
COMPUTER-ASSISTED LOCATER SYSTEMA computer system that keeps track of documents as they circulate through an agency.
COMPUTER-ASSISTED RETRIEVAL SYSTEMA records storage and retrieval system, normally microfilm-based, that uses a computer for indexing...
Concentrated Animal Feeding Operation1. An AFO that is defined as a Large CAFO or as a Medium CAFO, or that is designated as a CAFO. Two or more...
Concentrated Animal Feeding Operation DischargeDischarge from an AFO that is defined as a Large CAFO or as a Medium CAFO, or that is designated as a CAFO...
Concentrated Animal Feeding Operation EmissionGaseous emissions from a Concentrated Animal Feeding Operation, include hydrogen sulfide, ammonia, and...
Concentrated Animal Feeding Operations1. A lot or facility where: (1) animals have been, are, or will be stabled or confined and fed or maintained...
Concentrated Animal Feeding Operations FacilityA lot or facility where: (1) animals have been, are, or will be stabled or confined and fed or maintained for...
Concentrated Aquatic Animal Feeding OperationDefined at § 122.24.
Concentrated Aquatic Animal Production DischargeDischarge from a facility for the farming of animals that live in water, such as fish or shellfish.
Concentrated Aquatic Animal Production FacilityDefined at 40 CFR 122.24 and appendix C of 40 CFR part 122.
Concentrated FlowRills, ephemeral gullies, gullies, channels, streams and rivers are examples on the landscape of areas where...
ConcentratesHigh energy or high protein feeds consisting primarily of the seed of the plant, but with out stems and...
Concentrating Solar Power SystemConcentrating solar power (but not Solar thermal power) may also refer to a system that focuses solar rays on...
Concentration1. The relative amount of a substance in an environmental medium, expressed by relative mass (e.g., mg/kg)...
Concentration Design ValueCalculated concentration according to the applicable appendix of part 50 of this chapter for the highest site...
Concentration LimitsFor purposes of TSDF ground water monitoring, the maximum levels of hazardous constituents allowed to be...
Concentration Measurement SystemTotal equipment required for the continuous determination of SO2 gas concentration in a given source effluent.
Concentration Polarization1. The ratio of the salt concentration in the membrane boundary layer to the salt concentration in the bulk...
Concentration ProcessThe process of increasing the dissolved solids per unit volume of solution, usually by evaporation of the...
Concentration TechnologyPrimarily serves to separate contaminants from soils, thereby concentrating the waste stream and reducing the...
Concentration-Based LimitA limit based on the relative strength of a pollutant in a wastestream, usually expressed in milligrams per...
concentration-effect relationshipRelationship between the exposure, expressed in concentration, of a given organism, system, or (sub)...
Concentration-Response1. The relationship between the concentration of an agent and the frequency or magnitude of a biological...
Concentration-Response CurveA curve describing the relationship between exposure concentration and percent of the test population...
Concentration-Response Relationship1. The relationship between the concentration of an agent and the frequency or magnitude of a biological...
ConcentratorA photovoltaic module, which includes optical components such as lenses (Fresnel lens) to direct and...
Concept1. An abstract or symbolic tag that attempts to capture the essence of reality. The "concept" is later...
Conceptual BasisThis is the underlying scientific foundation of model algorithms or governing equations. The conceptual basis...
Conceptual InteroperabilityInteroperability of conceptions and restraints
Conceptual Model1. A written description or illustrated picture of the geologic, hydrogeologic, or environmental conditions...
Conceptual Model DevelopmentDevelopment of a hypothesis regarding the important factors that govern the behavior of an object or process...
Conceptual Model StageA hypothesis regarding the important factors that govern the behavior of an object or process of interest...
Conceptual Site Model1. A CSM, a key element used in facilitating cleanup decisions during a site investigation, is a planning...
ConcernPublic apprehension about whether some land use action might produce some more or less vaguely de-fined...
Concrete Batch PlantThe equipment that blends the concrete components.
Concrete CastingMaterial is spread, vibrated, screeded, and finished.
Concrete Curing and Sealing CompoundLiquid membrane-forming compound marketed and sold solely for application to concrete surfaces to reduce the...
Concrete Curing CompoundCoating formulated and recommended for application to freshly placed concrete to retard the evaporation of...
Concrete Delivery and CastingThe equipment used depends on the size of the products. Casting of small products may be done both manually...
Concrete FinishingTreating the surfaces of the concrete article not in contact with the form. .
Concrete ManufacturingManufacturing of products made from concrete. The basic materials of concrete are portland cement, aggregate...
Concrete MixingWeigh and mix cement, aggregate and water in the correct proportions. Precasting is a manufacturing procedure...
Concrete Pipe ProductionManufacturing of pipe made from concrete. The basic materials of concrete are portland cement, aggregate, and...
Concrete Protective CoatingHigh-build coating, formulated and recommended, for application in a single coat over concrete, plaster, or...
Concrete Surface RetarderMixture of retarding ingredients such as extender pigments, primary pigments, resin, and solvent that...
Concrete WasteBuilding material waste which was made by mixing cement, sand, aggregate and water and letting the mixture...
Condensable Particulate MatterParticulate matter, contained almost entirely within the PM₂.₅ classification, that forms from condensing...
Condensate1. Liquid formed when warm landfill gas cools as it travels through a collection system.
Condensate DrainDrains which remove condensation from air-conditioning or other equipment, frequently empty into the sump or...
Condensate drainsDrains which remove condensation from air-conditioning or other equipment, frequently empty into the sump or...
Condensate Return SystemSystem that returns the heated water condensing within steam piping to the boiler and thus saves energy.
Condensate Stripper SystemColumn, and associated condensers, used to strip, with air or steam, TRS compounds from condensate streams...
Condensation1. A part of the hydrologic cycle during which water vapor turns into a liquid.
Condensation ReactionThe polymerization reactions take place between two kinds of molecules
condenseTo change from gas or vapor to liquid form.
Condenser Stack GasGaseous effluent evolved from the stack of processes utilizing heat to extract mercury metal from mercury ore.
Condition1. The distribution of scores describing resource attributes without respect to any societal value or desired...
Condition indicatorA characteristic of the environment that provides quantitative estimates of the state of ecological resources...
Condition UnknownCondition Unknown is when a waterbody is identified for a specific use but not assessed for that use.
Conditional MethodAny method of sampling and analyzing for air pollutants that has been validated by the Administrator but that...
Conditional RegistrationUnder special circumstances, the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) permits...
conditionally exempt generators1. Small quantity facilities that produce fewer than 220 pounds of hazardous waste per month. Exempt from...
Conditionally Exempt Small Quantity Generator1. Someone that produces (otherwise known as generates) less than 100 kg (220 lb) of hazardous waste, or less...
Conditionally Exempt Small Quantity GeneratorsFacilities that produce less than 100 kg of hazardous waste, or less than 1 kg of acutely hazardous waste...
Conditionally Unstable AirAn atmospheric condition that exists when the environmental lapse rate is less than the dry adiabatic lapse...
Conditionally Valid DataData from a continuous monitoring system that are not quality-assured, but which may become quality-assured...
Conditioned AirAir that has been heated, cooled, humidified, or dehumidified to maintain an interior space within the...
Conditioned Space1. The part of the home that is meant to be heated and/or cooled. Typically includes the living area; may or...
ConditionsProvisions of an insurance policy that state the rights and duties of the insured and insurer.
Conditions of UseCircumstances, as determined by the Administrator, under which a chemical substance is intended, known, or...
Conduct of ScienceFormulation of hypotheses, study design, testing, data collection and analysis, modeling, systematic review...
Conductance1. A rapid method of estimating the dissolved-solids content of a water supply. The measurement indicates the...
Conduction1. The transfer of heat from one substance to another by direct contact. Denser substances are better...
Conduction currentsElectrical current resulting from the movement of free ges (contrast with displacement current).
Conductive SensitizerCoating applied to a plastic substrate to render it conductive for purposes of electrostatic application of...
conductivity1. A coefficient of proportionality describing the rate at which a fluid (e.g., water or gas) can move...
Conductivity (electrical)The ability of a material to conduct electrical current. In isotropic material, it is the reciprocal of...
conductivity probeA DP tool that measures the electrical conductivity of the soil to define lithology.
ConductorA substance, body, device or wire that readily conducts or carries electrical current.
Conductor HoleA large diameter hole, lined with pipe, also called a starter hole, varies in depth down of tens of feet to a...
ConduitA closed channel to convey water through, around, or under a dam.
coneDown-hole sensor used with CPT. At a minimum, consists of load cells to measure tip resistance and side-wall...
Cone of Depression1. The depression, roughly conical in shape, produced in the water table by the pumping of water from a well.
Cone of Influence1. The depression, roughly conical in shape, produced in the water table by the pumping of water from a well.
cone penetrometer testing1. A DP system used to measure lithology based on the penetration resistance of the soil. Sensors are mounted...
Confer1. Shift the essential-use allowances obtained under § 82.8 from the holder of the unexpended essential-use...
Conference Of PartiesThe supreme body of the United Nations Framework Convention on Climate Change (UNFCCC). It comprises more...
Conference of the PartiesThe supreme body of the United Nations Framework Convention on Climate Change (UNFCCC). It comprises more...
Conference(s)A meeting, retreat, seminar, symposium, workshop or event whose primary purpose is the dissemination of...
Confidence coefficient1. "The probability statement that accompanies a confidence interval and is equal to unity minus the...
Confidence Interval1. An estimate of a population parameter that consists of a range of values bounded by statistics called...
Confidence Interval (One-Sided)An interval below the estimated upper confidence limit, or interval above the estimated lower confidence...
Confidence Interval (Two-Sided)An estimated interval from the lower to upper confidence limit of an estimate of a parameter. This interval...
Confidence intervalsAn estimated range of values with a given probability of including the population parameter of interest. The...
Confidence LevelThe level of certainty to which an estimate can be trusted. The degree of certainty is expressed as the...
Confidence Limit1. An estimated value below (or above) which the true value of an estimated parameter is expected to lie for...
Confidence LimitsTwo statistics that form the upper and lower bounds of a confidence interval.
Confidential Business Information1. Information that contains trade secrets, commercial or financial information, or other information that...
Confidential InformationNational security information or material which requires protection. The test for assigning Confidential...
Confidential Statement of Formula1. A list showing the identity of the ingredients (both active and inert) contained in a pesticide...
Confidentiality1. Secrecy. In research this involves not revealing the identity of research subjects, or factors which may...
Confidentiality FormA written form that assures evaluation participants that information they provide will not be openly...
Configuration TestingChecking the performance of a computer system successively for each combination of its various hardware and...
Confined Abrasive Blasting EnclosureEnclosure that includes a roof and at least two complete walls, with side curtains and ventilation as needed...
Confined Aquifer1. An aquifer in which ground water is confined under pressure which is significantly greater than...
confined disposal facilityA facility built specifically for the disposal of dredged sediment. Often referred to by the acronym CDF.
Confined Space1. Space that: (1) Is large enough and so configured that an employee can bodily enter and perform assigned...
Confining BedBody of impermeable or distinctly less permeable material stratigraphically adjacent to one or more aquifers.
Confining Layer1. A geologic formation characterized by low permeability that inhibits the flow of water.
Confining Zone1. A geological formation (or group or part of a formation) capable of limiting fluid movement out of an...
Conflict of InterestFrom a federal ethics perspective, the term “conflict of interest” refers to representational or financial...
Conflicting Land UseLand uses by which the quality of each individual use is harmed by the others when they occur together in the...
Confluent Growth1. A continuous bacterial growth covering the entire filtration area of a membrane filter, or a portion...
Confocal MicroscopyA system of (usually) epifluorescence light microscopy in which a fine laser beam of light is scanned over...
Conformal map projectionOne of a class of map projections that preserves angular relationships between the map and the surface of the...
ConformanceAn affirmative indication or judgment that a product or service satisfies the relevant specification...
Conformation1. The body form or physical traits of an animal or parts of the animal in the case of udder conformation.
Conformity assessment1. Demonstration that specified requirements relating to a product, process, system, person or body are...
Conformity DeterminationEvaluation (made after an applicability analysis is completed) that a Federal action conforms to the...
Confounder1. A condition or variable that is both a risk factor for disease and associated with an exposure of...
Confounding1. An inability to distinguish the separate impacts of two or more individual variables on a single outcome.
Confounding Error1. Error induced by unrecognized effects from variables that are not included in the model. The unrecognized...
Confounding ErrorsErrors induced by unrecognized effects from variables that are not included in the model. The unrecognized...
Confounding FactorA condition or variable that is both a risk factor for disease and associated with an exposure of interest...
Confounding FactorsVariables other than chemical exposure level which can affect the incidence or degree of a parameter being...
Congener1. A congener is one of the 209 different PCB compounds. A congener may have between 1 and 10 chlorine atoms...
CONGENER SPECIFIC ANALYSISA form of chemical analysis that distinctly identifies and quantifies individual PCB congeners. It allows...
Congenital Abnormality1. Malformations of organs or body parts during development in utero.
ConglomerateA course-grained sedimentary rock composed of rounded fragments of pebbles, cobbles, or boulders cemented...
Congressional Districts1. The Congressional Districts layer includes information on the 118th Congressional Districts of the United...
CONGRESSIONAL EARMARKAssistance agreements awarded in response to direction from Congress or a Congressional Committee as...
Congressional Liaison OperationsCongressional Liaison Operations involves all activities associated with supporting the formal relationship...
Congressional Review ActThe Congressional Review Act allows Congress to review every new federal regulation issued by the government...
Conic map projectionOne of a class of map projections formed by projecting coordinates from the earth's surface onto a cone that...
ConicalShaped like a cone.
Conical map projectionOne of a class of map projections formed by projecting coordinates from the earth's surface onto a cone that...
ConidiumReproductive body produced by fungi.
Conifer1. Any needle-leaved or scale-leaved cone-bearing tree or shrub, such as pines, spruces and cypress.
Coniferous treesCone-bearing trees, mostly evergreens, that have needle-shaped or scale-like leaves. They produce wood known...
Coniothyrium minitans strain CON/M/91-08A highly specialized antifungal agent that targets Sclerotinia sclerotiorum and clerotinia minor, common...
Conjugate VaccineJoining together of two compounds (usually a protein and polysaccharide) to increase a vaccine’s...
ConjunctivitisInflammation of the lining of the eyelids
ConkFruiting body of a wood-decay fungus, often hoof or bracket-shaped and perennial, although some are annual...
Connected PipingAll underground piping including valves, elbows, joints, flanges, and flexible connectors attached to a tank...
ConnectednessThe structural links between habitat patches in a landscape; can be described from mappable features (adapted...
ConnecticutThe Connecticut River Basin. Connecticut, Massachusetts, New Hampshire, Vermont. Area = 11100 sq.mi.
Connecticut CoastalThe coastal drainage into Long Island Sound from the Pawcatuck River Basin boundary to and including the...
ConnectionWired “line” or wireless “channel” that provides a dedicated communication path between a Location and the...
Connective Tissue ProcessTissue that supports and binds other tissues. It consists of connective tissue cells embedded in a large...
Connector1. Flanged, screwed, or other joined fittings used to connect two pipe lines or a pipe line and a piece of...
ConnexinsA group of homologous proteins which form the intermembrane channels of gap junctions. The connexins are the...
Consecutive ChargingCharges observed successively, excluding any charge during which the observer’s view of the charging system...
Consecutive SystemPublic water system that receives some or all of its finished water from one or more wholesale systems...
ConsensusConsensus means substantial agreement has been reached by directly and materially affected interests. This...
Consensus Building1. A term for a variety of processes based on collaboration in which diverse and often competing interest...
Consensus Building OutcomeThe production of a common understanding among participants about issues and programs.
Consensus StandardStandards that are developed and adopted by achieving agreement with all affected parties. These standards...
consensus standardsStandards that are developed and adopted by achieving agreement with all affected parties. These standards...
Consent AgreementAdministrative agreement used to initiate potentially responsible party (PRP) response or cost recovery.
Consent Agreement (Administrative)Administrative agreement used to initiate potentially responsible party (PRP) response or cost recovery.
Consent Decree1. A legal document submitted by the Department of Justice on behalf of the EPA for approval by a federal...
Consent Decree CycleCycle for which Consent Decree actions are due.
Consent Decree (Order)A legal document, approved by a judge, that formalizes an agreement reached between EPA and potentially...
ConsequenceEffect of an event, incident, or occurrence. Consequence is commonly measured in four ways: human, economic...
Consequence AssessmentProduct or process of identifying or evaluating the potential or actual effects of an event, incident, or...
Consequence of FailureThe real or hypothetical results associated with the failure of an asset.
Consequential Life Cycle AssessmentAn LCA that attempts to account for flows/impacts that are caused beyond the immediate system in response to...
Conservation1. Preserving and renewing, when possible, human and natural resources. The use, protection, and improvement...
Conservation EasementEasement restricting a landowner to land uses that are compatible with long-term conservation and...
Conservation EasementsStatutes adopted by some states that establish easements to conserve and protect property and natural...
Conservation management systemA generic term used by the NRCS that includes any combination of conservation practices and management that...
Conservation, Marine & Land ManagementConservation, Marine and Land Management involves the responsibilities of surveying, maintaining, and...
Conservation Pricing1. Water rate structures that help achieve beneficial reductions in water usage. See Nonpromotional Rates.
Conservation Reserve Enhancement ProgramA new initiative of CRP which uses financial incentives to encourage farmers and ranchers to voluntarily...
Conservation Reserve ProgramA volunteer program offering annual rental payments, incentive payments, and cost-share assistance for...
Conservation TillageAny tillage and planting system that covers 30 percent or more of the soil surface with crop residue, after...
Conservation VentAutomatically operated (e.g., weight-loaded or spring-loaded) safety device used to prevent the operating...
Conservation Verification ProtocolMethodology developed by the Administrator for calculating the kilowatt hour savings from energy conservation...
Conservation (water)Any beneficial reduction in water losses, waste, or use.
Conservation ZoningZoning which restrains development of unsuited areas such as steep slopes with fragile soils, areas of scenic...
Conservative1. A conservative risk assessment estimates high-end risk rather than low-end risk. A conservative risk...
Conservative PollutantPollutants that do not readily degrade in the environment and that are mitigated primarily by dilution after...
Conservative SubstanceA substance that does not undergo any chemical or biological transformation or degradation in a given...
Consistency of EvidenceThe degree to which types of evidence in a strength-of-evidence analysis are in agreement in either...
Consistently Achievable Effluent ConcentrationEffluent Concentrations Consistently Achievable through Proper Operation and Maintenance. For a given...
Consolidated Checklists C1 through C11A consolidation of the checklists used for the initial RCRA Base Program, plus all the revisions to this...
Consolidated Emissions Reporting SchemaThe XML schema that describes the structure of the XML document for reporting emissions inventory data.
Consolidated Human Activity DatabaseAn in-depth EPA database of human activity. CHAD includes data from over 20 activity studies dating to 1982...
Consolidated Metropolitan Statistical AreaA CMSA is an area with a population of one million or more that meets a range of other statistical criteria...
Consolidated Microbial Commercial Activity NoticeAny MCAN submitted to EPA that covers more than one microorganism (each being assigned a separate MCAN number...
Consolidated PlanState may meet statutory and regulatory requirements by combining two or more plans into one document and...
Consolidated Premanufacture NoticeAny PMN submitted to EPA that covers more than one chemical substance (each being assigned a separate PMN...
Consolidated Rules of Practice1. Consolidated Rules of Practice Governing the Administrative Assessment of Civil Penalties and the...
ConsolidatorThe person or firm that consolidates (combines) cargo from a number of shippers into a container that will...
Consortium1. An organization representing a group of methyl bromide users that has collectively submitted an...
Constant Air Volume SystemAir handling system that provides a constant air flow while varying the temperature to meet heating and...
Constant Air Volume SystemsAir handling system that provides a constant air flow while varying the temperature to meet heating and...
Constant Control TechnologySystems which limit the quantity, rate, or concentration, excluding the use of dilution, and emissions of air...
Constant Variance Model1. A BMDS model assumption that the variance of a normal distribution of continuous measures is the same for...
ConstantsQuantities with have fixed values (e.g., the speed of light and the gravitational force) representing known...
Constant-Speed Engine1. Engine that is governed to operate only at rated speed.
Constant-Speed Engine Operation1. Engine operation with a governor that automatically controls the operator demand to maintain engine speed...
constituentAn essential part or component of a system or group (e.g., an ingredient of a chemical mixture). For...
Constituent of ConcernSpecific chemicals that are identified for evaluation in the site assessment process.
Constituent of Potential ConcernSpecific chemicals that are identified for evaluation in the site assessment process
Constituent(s) of ConcernSpecific chemicals that are identified for evaluation in the site assessment process.
Constitutive Androstane ReceptorNuclear receptor subfamily 1 group I member 3 (352 aa, ~40 kDa) is encoded by the human NR1I3 gene. This...
Constrained Dose-Response ModelEstimates of one or more parameters of the model are restricted to a specified range, e.g., equal to or...
ConstraintA limitation of any kind to be considered in planning, programming, scheduling, implementing, or evaluating...
ConstructA concept that describes and includes a number of characteristics or attributes. The concepts are often...
Construct ValidityThe extent to which a measurement method accurately represents a construct and produces an observation...
Constructed Wetland1. An artificial wetland system designed to mitigate the impacts of urban runoff.
Construction1. Construction involves all programs and activities in which the Federal Government builds or constructs...
Construction and Demolition Debris1. Refers to waste that is generated during the construction, remodeling, repair, or demolition of buildings...
Construction and Demolition Landfill1. Solid waste disposal facility subject to the requirements of subparts A or B of this part that receives...
Construction and Demolition MaterialsConstruction and demolition (C&D) materials consist of the debris generated during the construction...
Construction and Demolition Waste1. Waste building materials, dredging materials, tree stumps, and rubble resulting from construction...
Construction and Demolition WoodConstruction and demolition (C&D) wood means wood that is generated from the processing of debris from...
Construction and Panel AdhesiveAny one-component household adhesive having gap-filling capabilities that distributes stress uniformly...
Construction ApprovalPermits and approvals required under Federal, State or local hazardous waste control statutes, regulations or...
Construction BanIf, under the Clean Air Act, EPA disapproves an area's planning requirements for correcting nonattainment...
Construction CompleteRemedies at a site often require physical construction (e.g., building of water treatment systems). A site is...
construction completionThe stage in cleanup when physical construction of all cleanup remedies is complete, all immediate threats...
Construction Completion ListSee http://www.epa.gov/superfund/cleanup/ccl.htm. EPA has developed a construction completion list (CCL) to...
Construction Equipment1. Any internal combustion engine-powered machine primarily used in construction and located on commercial...
Construction Equipment OperatorUses machinery to move construction materials, earth, and other heavy materials at construction sites and...
Construction IndustryThe construction sector comprises establishments primarily engaged in the construction of buildings or...
Construction Material1. Supplies used in building.
construction materialsMaterials used in construction, notably sand, gravel, crushed stone, dimension stone, asbestos, clay, cement...
Construction MineralMaterials used in construction, notably sand, gravel, crushed stone, dimension stone, asbestos, clay, cement...
construction mineralsMaterials used in construction, notably sand, gravel, crushed stone, dimension stone, asbestos, clay, cement...
Construction Permit1. A permit issued by the designated local regulatory authority that allows the installation of a wastewater...
Construction PhaseThe project phase following land acquisition and land development. Construction of structure(s) occurs during...
Construction PlasticizerSmall, often volatile molecules that are added to hard, stiff plastics to make them softer and more flexible.
Construction PlasticsBuilding materials made of plastic.
Construction Project TypeThe kind of construction job
Construction Quality AssuranceA program required by EPA to ensure that a landfill, surface impoundment, or waste pile meets all of the...
construction runoff interceptsA temporary berm or channel constructed across a slope to collect and divert runoff.
Construction Sand and GravelThe sand and gravel used mostly for construction purposes.
Construction Service1. Meaning given in 40 CFR 52.21.
Construction SiteLocation where construction activities, i.e.,construction, alteration, and/or repair, including painting and...
Construction StormwaterPermit requirements associated with construction activities, as defined at 40 CFR 122.26.
Construction Vehicle1. Any internal combustion engine-powered machine primarily used in construction and located on commercial...
ConsultantAn individual who provides expert or professional advice or services, often in a paid capacity.
Consumer1. A heterotrophic organism in a food chain that ingests other organisms or organic matter.
Consumer (Biological)Any organism that consumes other organisms (living or dead) to meet its energy needs
Consumer (Food Chain)Heterotrophic organism in a food chain that ingests other organisms or organic matter.
Consumer Paint and Coating RemovalPaint and coating removal performed by any natural person who uses a paint and coating removal product for...
Consumer Price Index1. Refers to an index measuring the change in the cost of typical wage-earner purchases of goods and services...
Consumer Product1. Any household or institutional product (including paints, coatings, and solvents), or substance, or...
Consumer Product ContainerPart or parts of the consumer product that serve only to contain, enclose, incorporate, deliver, dispense...
Consumer Product Manufacturer1. Any person who manufacturers or processes a consumer product. Manufacturers include:(1) Processors who...
Consumer Product PackagingPart or parts of the consumer product that serve only to contain, enclose, incorporate, deliver, dispense...
Consumer Products ImporterPerson who brings a consumer product that was manufactured, filled, or packaged at a location outside of the...
Consumer SurplusThe amount people value a good or service over the price they pay for it.
Consumer UnitA consumer unit is defined as either (1) all members of a particular household who are related by blood...
Consumer UseUse of a chemical substance or a mixture containing a chemical substance (including as part of an article)...
Consumer Water DeviceEquipment using water at the consumer's residence
Consumer Water UseWater which is used directly by people for personal use
Consumer-only intake rateThe average quantity of food consumed per person in a population composed only of individuals who ate the...
Consumption Allowance1. Privileges granted by this subpart to produce and import controlled substances; however, consumption...
consumption rateThe average quantity of an item consumed or expended during a given time interval, expressed in quantities by...
Consumption rate of interestThe rate at which individuals are willing to exchange consumption in one period (usually year) for...
Consumptive Use1. Water removed from available supplies without direct return to a water resource system for uses such as...
Consumptive Water Use1. Water removed from available supplies without return to a water resources system, e.g. water used in...
Contact1. Person registered as the owner of station, sample, and result information. You may access this information...
Contact Adhesive1. Any household adhesive that:(1) When applied to two substrates, forms an instantaneous, nonrepositionable...
Contact boundary1. The surface on a target where an agent is present. Examples of outer exposure surfaces include the...
Contact Cooling and Heating WaterProcess water that contacts the raw materials or plastic product for the purpose of heat transfer during the...
Contact Cooling Water1. Wastewater which contacts the metal workpiece or the raw materials used in forming metals for the purpose...
Contact DermatitisA type of acute or chronic skin reaction in which sensitivity is manifested by reactivity to materials or...
Contact HypersensitivityContact hypersensitivity is an inflammatory response induced by antigen-reactive T cells that are exposed to...
Contact MaterialAny substance formulated to remove metals, sulfur, nitrogen, or any other contaminant from petroleum...
Contact PesticideA chemical that kills pests when it touches them, instead of by ingestion. Also, soil that contains the...
Contact ProcessIn the production chain of sulfuric acid; oxidation of SO2 to SO3.
Contact TracingIdentification of those persons (or animals) who have had such an association with an infected person...
Contact-handledA legal definition from the WIPP Land Withdrawal Act. Transuranic waste whose surface radioactive dose rate...
Contact-Handled Transuranic WasteLegal definition from the WIPP Land Withdrawal Act. Transuranic waste whose radioactive dose rate is less...
ContactorAn electrical switch, usually magnetically operated.
Contagious1. Disease that can be passed from one bird or animal to another through a number of possible ways.
Contagious Bovine PleuropneumoniaAn infectious disease of the lungs in cattle caused by Mycoplasma mycoides subsp mycoides that is spread by...
Contagious Caprine PleuropneumoniaA highly contagious and fatal disease of goats in the Middle East, Africa, and Asia, causing significant...
contagious distributionA probability distribution describing a stochastic process consisting of a combination of two or more...
Contagious EcthymaAn infectious dermatitis of sheep and goats, affecting primarily the muzzle and lips. It is caused by a...
Contagious Equine MetritisA venereal disease of horses caused by the bacteria Taylorella equigenitalis. It is spread during breeding or...
Contained Gaseous MaterialGases that are in a container when that container is combusted.
Contained Hazardous WasteHeld in a unit (including a land-based unit as defined in this subpart) that meets the following criteria...
Contained Secondary MaterialThe non-hazardous secondary material is stored in a manner that adequately prevents releases or other hazards...
Contained-in Determination for SoilGranted by EPA or an authorized state that certifies that soil is no longer considered a hazardous waste. You...
Contained-in Policy1. The "contained-in" policy dates back to a 1986 memorandum which states that although groundwater is not a...
Container1. A box made of aluminum, steel or fiberglass used to transport cargo by ship, rail, truck or barge. Common...
Container AlterationAny work on a container involving cutting, burning, welding, or heating operations that changes the physical...
Container Capacity1. As applied to containers, the rated capacity of the container.
Container ConditionDescription of the various statuses a container may have, e.g. empty, closed.
Container Glass1. Glass made of soda-lime recipe, clear or colored, which is pressed and/or blown into bottles, jars...
Container in Light Material ServiceContainer is used to manage a material for which both of the following conditions apply: The vapor pressure...
Container Nominal CapacityExpected volumetric working capacity of a container.
Container or Tank(1) Any stationary device constructed primarily of nonearthen materials (such as wood, concrete, steel, or...
Container Storage CapacityShell capacity of the container
ContainersPortable devices in which a material is stored, transported, treated, or otherwise handled.
Containment1. Any physical, chemical, biological, or radiological substance or matter in air, water, or soil that can...
Containment Building1. A completely enclosed structure used to store or treat noncontainerized waste.
Containment Control1. Any combination of mechanical, procedural, or biological controls designed and operated to restrict...
Containment PadAny structure that is designed and constructed to intercept and contain pesticides, rinsates, and equipment...
Containment StructureEither a secondary containment unit or a containment pad.
Containment SumpLiquid tight container that protects the environment by containing leaks and spills of regulated substances...
Contaminant1. Any physical, chemical, biological, or radiological substance or matter in water.
Contaminant by TypeIndividual contaminants classified into contaminant groups based on their chemical structure and physical...
Contaminant CandidatesItems that are on the Contaminant Candidate List.
Contaminant CarrierDredged or fill material that contains contaminants
Contaminant concentrationContaminant concentration is the concentration of the contaminant in the medium (air, food, soil, etc.)...
Contaminant ControlTechnologies, treatments, processes or procedures that control or limit any physical, chemical, biological...
Contaminant LevelA measure of how much of a contaminant is present.
Contaminant of Concern1. Anything that makes the water or land impure, unclean or polluted.
Contaminant of (Ecological) ConcernA substance detected at a hazardous waste site that has the potential to affect ecological receptors...
Contaminant of Emerging ConcernPharmaceuticals, personal care products and other chemicals that are being discovered in water that...
Contaminant of Potential ConcernChemicals that are potentially site-related and whose data are of sufficient quality for use in a...
Contaminant of Potential Ecological ConcernAny contaminant that is shown to pose possible ecological risk to a site. A Contaminant of Potential...
Contaminant (regulatory)Any physical, chemical, biological, or radiological substance or matter in water. {OW/TSC}
Contaminant RemobilizationSpread of toxic or otherwise dangerous chemicals by means of flooding or other events that disturb...
Contaminant SpeciationDistribution of the contaminant across the various chemical species in the environment
Contaminant TransformationThe change of a contaminant from one chemical form to another.
Contaminant TransportThe movement of a contaminant from one medium or location to another
ContaminantsAny element, substance, compound, or mixture that, after release into the environment and upon exposure...
Contaminants of Concern1. Contaminants of Concern (COCs) are those contaminants which have been shown through analysis to be those...
Contaminants of emerging concernPharmaceuticals, personal care products and other chemicals that are being discovered in water that...
Contaminants of Potential ConcernChemicals that are potentially site-related and whose data are of sufficient quality for use in a...
Contaminated Ground WaterWater below the land surface in the zone of saturation which has been contaminated by activities associated...
Contaminated Groundwater Migration Environmental Indicator MeasureThe Contaminated Groundwater Migration (GM) environmental indicator documents whether contamination is below...
Contaminated groundwater migration is not under controlIndicates that all information on known and reasonably expected groundwater contamination has been reviewed...
Contaminated groundwater migration is under controlIndicates that all information on known and reasonably expected groundwater contamination has been reviewed...
Contaminated Groundwater Migration Under ControlThe Migration of Contaminated Groundwater Under Control EI is a Government Performance and Results Act (GPRA)...
Contaminated LandLand that has been polluted with hazardous materials and requires cleanup or remediation. Contaminated lands...
Contaminated MediaMedium affected by contaminants at a site. Types of media include: Soil, Solid Waste, Sediment, Groundwater...
Contaminated Non-Process Waste Water1. Any water including precipitation runoff, which during manufacturing or processing, comes into incidental...
Contaminated Nonprocess Waste WaterAny water including precipitation runoff, which during manufacturing or processing, comes into incidental...
Contaminated Nonprocess WastewaterAny water which, during manufacturing or processing, comes into incidental contact with any raw material...
Contaminated RunoffRunoff which comes into contact with any raw material, intermediate product, finished product, by-product or...
Contaminated Sediment1. Soil, sand, organic matter, or minerals that accumulate on the bottom of a water body and contain toxic or...
Contaminated SiteMeans all portions of environmental media at a site that contain one or more contaminants at a concentration...
Contaminated SoilRefers to the introduction of micro-organisms, chemicals, toxic substances, wastes, or wastewater into soil...
Contaminated Soil (excluding land treatment)Soil onto which available evidence indicates a hazardous substance was spilled, spread, disposed, or...
Contaminated Storm Water1. Storm water which comes in direct contact with CWT wastes, the waste handling and treatment areas, or...
Contamination1. The act of polluting or making impure; any indication of chemical, sediment, or biological impurities.
Contamination Mitigation SystemA system which reduces health risks to hazardous substances or materials. It is used to monitor and mitigate...
Contamination SourceThe place where a hazardous substance comes from, such as a landfill, waste pond, incinerator, storage tank...
Contamination Source InventoryAn inventory of contaminant sources within delineated State Water-Protection Areas. Targets likely sources...
Contamination Warning SystemA system to deploy and operate online sensors, other surveillance systems, rapid communication technologies...
contentThe intellectual substance of a document, including text, data, symbols, numerals, images, and sound.
Content AnalysisA set of procedures for collecting and organizing nonstructured information into a standardized format that...
content managementThe capability to manage and track the location of, and relationships among, content within a repository.
Content typeDenotes the particular from of content. For the purposes of this document, the content types reference in the...
Content ValidityThe ability of the items in a measuring instrument or test to adequately measure or represent the content of...
Context (of an evaluation)The combination of the factors accompanying the study that may have influenced its results. These factors...
Contiguous With Regard to WetlandsHydraulic connection (constructed or natural) between other surface water bodies and the wetland that allows...
Contiguous Zone1. The zone of the high seas, established by the United States under Article 24 of the Convention on the...
Continental Air MassA dry air mass originating over a large land area. Contrast with tropical air mass.
Continental ClimateA continental climate is a climate lacking oceanic influence and characterized by more extreme temperatures...
Continental CrustThe layer of the Earth that lies under continents and the continental shelves. It ranges in thickness from 35...
Continental Liquid Oil-Fired SubcategoryAny oil-fired electric utility steam generating unit that burns liquid oil and is located in the continental...
continental margin1. The region of the sea floor between the shoreline and the deep abyssal ocean, see margin, active and...

3,357 of 30,736 terms in Environment terminology (MLC-0121). Request the full dataset.