Environment terminology · MLC-0121

Environment terms: N (1,191)

Page 2 of 3

New Propulsion Marine EngineDefinition too long to reproduce here.
"New" RenewablesThe voluntary green power market came into existence in the late 1990's. January 1, 1997 is considered a...
New Secondary Aluminum Processing UnitAny combination of individual group 1 furnaces and in-line fluxers within a secondary aluminum processing...
New Source1. Any building, structure, facility, or installation from which there is or may be a discharge of...
New Source Coal MineCoal mine (excluding coal preparation plants and coal preparation plant associated areas) including an...
New Source Performance Standard1. Technology-based standard for facilities that qualify as new sources under 40 CFR 122.2 and 40 CFR 122.29...
New Source Performance Standards1. Uniform national EPA air emission and water effluent standards which limit the amount of pollution allowed...
New Source Remining OperationRemining operation at a coal mine where mining first commences after February 22, 2002 and subsequently...
New Source Review1. A Clean Air Act requirement that State Implementation Plans must include a permit review that applies to...
New Tank SystemTank system that will be used to contain an accumulation of regulated substances and for which installation...
New UseA new use, when used with respect to a product containing a particular active ingredient, means: (1) Any...
New Use Pattern Registration ReviewReview of an application for registration, or for amendment of a registration entailing a major change to the...
New Used Oil TankTank that will be used to store or process used oil and for which installation has commenced after the...
New VehicleNonroad engine, nonroad vehicle, or nonroad equipment the equitable or legal title to which has never been...
New Vessel1. Vessel, the equitable or legal title to which has never been transferred to an ultimate purchaser.
New Violation CauseTo cause or contribute to a new violation of a standard in the area substantially affected by the project or...
New WaterWater from any discrete source such as a river, creek, lake or well which is deliberately allowed or brought...
New York Bight ApexOcean waters of the Atlantic Ocean westward of 73 degrees 30 minutes west longitude and northward of 40...
Newly Implemented Source Reduction ActivityAn activity is considered newly implemented if it went into effect, in whole or in part, during this...
NewtonA force which, when applied to a body having a mass of one kilogram, gives it an acceleration of one meter...
Next Generation ComplianceConsists of five interconnected components, each designed to improve the effectiveness of EPA compliance...
Neyraudia reynaudianaBurma reed, also known as silk reed, cane grass, and false reed, is a tall, perennial, large-plumed grass...
niche1. How an organism fits into the ecosystem--where it lives, what it consumes, what consumes it, and how it...
NickelTotal nickel.
Nickel and Nickel CompoundsIncludes any unique chemical substance that contains nickel as part of that chemical's infrastructure.
Nickel Cadmium BatteryRechargeable battery with nickel oxide hydroxide as the cathode and cadmium as the ande.
Nickel Compounds (0.1)Includes any unique chemical substance that contains nickel as part of that chemical's infrastructure.
Nickel Metal Hydride BatteryA rechargeable battery using a hydrogen-absorbing alloy at the anode and nickel hydroxide at the cathode
Nicotinamide Adenine Dinucleotide PhosphateA coenzyme composed of ribosylnicotinamide 5'-phosphate (NMN) coupled by pyrophosphate linkage to the...
Nicotine and Salts (1.0)Includes any unique chemical substance that contains nicotine or a nicotine salt as part of that chemical's...
NidoviralesAn order comprising three families of eukaryotic viruses possessing linear, nonsegmented, positive sense RNA...
NifedipineA potent vasodilator agent with calcium antagonistic action. It is a useful anti-anginal agent that also...
NIH Manuscript Submission SystemThe National Institutes of Health's submission system for inclusion of journal publications or associated...
NiihauThe drainage on the islands of Niihau and Kaula; and associated waters. Hawaii. Area = 72 sq.mi.
NimbostratusA cloud of the class characterized by a formless layer that is almost uniformly dark gray; a rain cloud of...
Nine minimum elementsComponents that EPA has identified as critical for achieving improvements in water quality. EPA requires that...
Ninetieth PercentileValue that would divide an ordered set of increasing values so that at least 90 percent are less than or...
Ninety-Fifth PercentileValue that would divide an ordered set of increasing values so that at least 95 percent of the set are less...
NiobraraThe Niobrara River Basin and the Ponca Creek Basin. Nebraska, South Dakota, Wyoming. Area = 13900 sq.mi.
NIOSH Ceiling Reference Exposure LevelA NIOSH-recommended REL that should not be exceeded at any time. See NIOSH Pocket Guide to Chemical Hazards.
NIOSH Immediately Dangerous to Life or HealthThe purpose for establishing an IDLH value in the NIOSH Standards Completion Program was to determine the...
NIOSH Phase Contrast Microscopy Method 7400A light microscopy analytical method.
NIOSH Polarized Light Microscopy Method 7402NIOSH 7402 uses transmission electron microscopy (TEM) to qualify and quantify asbestos fibers found in the...
NIOSH Recommended Exposure LimitA NIOSH REL may be a time-weighted average (TWA) concentration for up to a 10-hour workday during a 40-hour...
NIOSH Short-Term Exposure LimitA 15-minute TWA exposure which should not be exceeded at any time during a workday. See NIOSH Pocket Guide to...
Nipple1. The pigmented protuberance on the surface of the breast through which milk is drawn from the breast.
NIST Standard Reference Material1. A Certified Reference Material (CRM) issued by the National Institute of Standards and Technology (NIST)...
NIST Traceable Reference MaterialCalibration gas mixture tested by and certified by the National Institutes of Standards and Technologies...
NIST-Accepted ValueRelating to a value that has been assigned or named by NIST.
NistamineAn amine derived by enzymatic decarboxylation of HISTIDINE. It is a powerful stimulant of gastric secretion...
NIST/EPA-Approved Certified Reference MaterialCalibration gas mixture that has been approved by EPA and the National Institutes of Standards and...
NIST-Traceable Standard ValueRelating to a standard value that can be related to NIST (National Institute of Standards and...
NIST-Traceable ValueRelating to a standard value that can be related to NIST-stated references through an unbroken chain of...
Nitrate1. A compound containing nitrogen that can exist in the atmosphere or as a dissolved gas in water and which...
Nitrate (as Nitrogen)Nitrate reported as nitrogen.
NITRATE FILMTransparent plastic no longer produced as a film base because it is very flammable. Also called cellulose...
Nitrate FluxThe flow of nitrate (the most soluble and mobile form of nitrogen) out of a system, as from groundwater to...
Nitrate Reduction1. The biological reduction of nitrate to nitrogen gas by bacteria in soil.
Nitrate RemovalRemoval of the nitrate ion from drinking water. The following treatment method(s) have proven to be effective...
Nitrated Polycyclic Aromatic HydrocarbonsClass of compounds whose molecular structure includes two or more aromatic rings and contains one or more...
NitratesPlant nutrient and fertilizer that enters water supply sources from fertilizers, animal feed lots, manures...
Nitrates and NitritesNitrogen-oxygen chemical units that combine with various organic and inorganic compounds. Once taken into the...
nitric acid1. An acid that can be produced from nitrogen oxide, a pollutant that results from the burning of fossil...
Nitric Acid PlantAny facility producing nitric acid 30 to 70 percent in strength by either the pressure or atmospheric...
Nitric Acid Production LineSeries of reactors and absorbers used to produce nitric acid.
Nitric Acid Production UnitAny facility producing weak nitric acid by either the pressure or atmospheric pressure process.[40 CFR 60.71a...
Nitric OxideA gas formed by combustion under high temperature and high pressure in an internal combustion engine; it is...
Nitric Oxide SynthaseAn NADPH-dependent enzyme that catalyzes the conversion of L-Arginine and oxygen to produce citrulline and...
Nitrification1. The biochemical oxidation of ammonium to nitrate, predominantly by autotrophic bacteria.
Nitrification CapabilityCapability of a POTW treatment system to oxidize ammonia or ammonium salts initially to nitrites (via...
Nitrification InhibitorA chemical that slows down the conversion of ammonium to nitrate nitrogen.
Nitrifying BacteriaBacteria which oxidize ammonia to nitrates
Nitrifying MicroorganismMicroorganisms that convert ammonia to nitrites and others which oxidize nitrites to nitrates
Nitrile Butadiene LatexPolymer consisting primarily of unsaturated nitriles and dienes, usually acrylonitrile and 1,3-butadiene...
Nitrile Butadiene RubberPolymer consisting primarily of unsaturated nitriles and dienes, usually acrylonitrile and 1,3-butadiene, not...
Nitrile ResinResin produced through the polymerization of acrylonitrile, methyl acrylate, and butadiene latex using an...
NitrilesOrganic compounds containing the -CN radical. The concept is distinguished from CYANIDES, which denotes...
Nitrilotriacetic AcidA compound now replacing phosphates in detergents.
Nitrite1. An intermediate in the process of nitrification.
Nitrogen1. A type of nutrient that contributes to the Bay's poor water quality. While nitrogen is needed for plant...
Nitrogen and/or PhosphorusNitrogen and/or Phosphorus (nutrients) in excessive amounts can cause aquatic plants and microbes to grow too...
Nitrogen Control TechnologyTreats or controls wastewater contaminanted with nitrogen. The technology includes biological and...
Nitrogen Cycle1. The natural circulation of nitrogen among the atmosphere, plants, animals, and microorganisms that live in...
Nitrogen Cycle MicroorganismMicroorganisms, primarily bacteria, which either reduce or oxidize nitrogen-containing substances in the...
Nitrogen Dioxide1. A chemical that results from nitric oxide combining with oxygen in the atmosphere; a major component of...
Nitrogen Fixation1. The biological or chemical process by which elemental nitrogen from the air is converted to organic or...
Nitrogen LoadingRefers to the addition of an amount of nitrogen entering waters during a specific time period.
Nitrogen Oxide1. The result of photochemical reactions of nitric oxide in ambient air; major component of photochemical...
Nitrogen Oxides1. The result of photochemical reactions of nitric oxide in ambient air; major component of photochemical...
Nitrogen Oxides AllowanceAuthorization by the permitting authority or the Administrator under the NOX Budget Trading Program to emit...
Nitrogen Oxides Allowance DeductionPermanent withdrawal of NOX allowances by the Administrator from a NOX Allowance Tracking System compliance...
Nitrogen Oxides Allowance HeldNOX allowances recorded by the Administrator, or submitted to the Administrator for recordation, in...
Nitrogen Oxides Allowance Tracking SystemSystem by which the Administrator records allocations, deductions, and transfers of NOX allowances under the...
Nitrogen Oxides Allowance Tracking System AccountAccount in the NOX Allowance Tracking System established by the Administrator for purposes of recording the...
Nitrogen Oxides Allowance Transfer DeadlineMidnight of November 30 or, if November 30 is not a business day, midnight of the first business day...
Nitrogen Oxides Authorized Account RepresentativeFor a NOX Budget source or NOX Budget unit at the source, the natural person who is authorized by the owners...
Nitrogen Oxides Budget Emissions LimitationFor a NOX Budget unit, the tonnage equivalent of the NOX allowances available for compliance deduction for...
Nitrogen Oxides Budget Opt-In PermitNOX Budget permit covering a NOX Budget opt-in source.
Nitrogen Oxides Budget Opt-in SourceUnit that has been elected to become a NOX Budget unit under the NOX Budget Trading Program and whose NOX...
Nitrogen Oxides Budget Trading ProgramMulti-state nitrogen oxides air pollution control and emission reduction program established in accordance...
Nitrogen Oxides Control(Control of nitrogen oxides emission which are) a family of highly reactive gases (including nitrogen...
Nitrogen Oxides EmissionEmission of NOx which is the collective term for nitrogen compounds such as NO and NO2. Nitrogen oxides are...
Nitrogen Oxides Emission Standard and Control MeasureNo owner or operator shall discharge or cause the discharge of NOX into the atmosphere.(i) From either Unit 1...
Nitrogen Oxides Emissions CapTotal amount of NOX emissions, in tons per day on a 30-day rolling average basis, that is collectively...
Nitrogen Oxides Portable AnalyzerUsed to measure nitrogen oxides emissions from small sources e.g., reciprocating engines, combustion...
Nitrogen Oxides State Implementation Plan CallRules codified at 40 CFR 51.121 and 51.122.
Nitrogen Oxides Trading1. Exchange of complete heavy-duty vehicle NOX emission credits between manufacturers.
Nitrogen (pollutant category)Pollutant grouping that includes parameters for total nitrogen, organic nitrogen, total Kjeldahl nitrogen...
Nitrogen Removal UnitProcess unit that separates nitrogen from natural gas using various separation processes (e.g. cryogenic...
Nitrogen Removal Unit Vent Emissionnitrogen gas separated from the natural gas and released with methane and other gases to the atmosphere.
nitrogen to phosphorus ratioNitrogen and phosphorus are both nutrients. The ratio that exists between the two can affect the composition...
Nitrogen-Fixing BacteriaBacteria which may live in nodules on some plant roots which change atmospheric nitrogen into nitrogen...
Nitrogen-Fixing PlantPlants which convert nitrogen from the air to nitrates in the soil through a process known as nitrogen...
Nitrogen-Fixing TreeTrees that can convert atmospheric nitrogen into usable form through a symbiotic relationship with bacteria...
Nitrogenous(nye-TRAH-jen-us) A term used to describe chemical compounds (usually organic) containing nitrogen in...
Nitrogenous FertilizerAmmonia fertilizer compounds and anhydrous ammonia, nitric acid, ammonium nitrate, ammonium sulfate and...
Nitrogenous WasteAnimal or vegetable residues that contain significant amounts of nitrogen.
Nitrogenous WastesAnimal or vegetable residues that contain significant amounts of nitrogen.
NitrophenolsSynthetic organopesticides containing carbon, hydrogen, nitrogen, and oxygen.
Nitrosamine MetabolismNitrosamine Metabolism involves important cellular biochemical detoxification reactions that chemically...
NitrosaminesA class of compounds that contain a -NH2 and a -NO radical. Many members of this group have carcinogenic and...
Nitrosating AgentAny substance that has the potential to transfer a nitrosyl group (-NO) to a primary, secondary, or tertiary...
Nitrous Oxide1. A clear, colorless gas, with slightly sweet odor. Due to its long atmospheric lifetime (approximately 120...
NivalenolNivalenol is produced by the Fusarium nivale fungi and has also only recently been isolated. Little is known...
NizatidineA histamine H2 receptor antagonist with low toxicity that inhibits gastric acid secretion. The drug is used...
N-Methyl Carbamate ExposureExposure to N-methyl carbamates, usually by being exposed to them in pesticide use
NMIM County DatabaseA consolidated emissions modeling system for EPA's MOBILE6 and NONROAD models.
N-MyristoylationN-Myristoylation is the covalent attachment of myristic acid, a saturated 14-carbon fatty acid inserted in...
N,N-DiethylmetatoluamideAn ingredient of insect repellents.
No Action Record of Decision1. A Record of Decision that states that a "no action alternative," meaning no change from the present course...
No Data IndicatorThe unique code indicating why a DMR value was not submitted by the permittee during a monitoring period...
No Detectable Emission1. Less than 500 ppm above background levels, as measured by a detection instrument in accordance with Method...
No Detectable Organic Emission1. No escape of organics to the atmosphere as determined using the procedure specified in § 63.694(k) of this...
No External Shaft AgitatorAny pump or agitator that is designed with no externally actuated shaft penetrating the pump or agitator...
No External Shaft PumpAny pump or agitator that is designed with no externally actuated shaft penetrating the pump or agitator...
No Free Oil Discharge1. Waste streams may not be discharged that contain free oil as evidenced by the monitoring method specified...
No Further Federal ActionNo Further Federal Action (NFFA) indicates that a site which was previously excluded, because it qualified...
No Further Federal Response ActionIndicates that a site which was previously excluded, because it qualified for possible listing on the NPL, is...
No Further Remedial Action Planned1. Decision made by EPA following a preliminary assessment that a site does not pose a significant risk and...
No limitationsThe EPA did not promulgate numeric or narrative pollutant limitations for the process operation/wastestream.
No Net Loss PolicyWetland losses must be offset by wetland gains in terms of actual acreage and, to the extent possible...
No Observable Adverse Effect LevelAn exposure level at which there are no statistically or biologically significant increases in the frequency...
No Observed Adverse Effect Level1. A level of exposure which does not cause observable harm.
No Observed Adverse Effects ConcentrationThe highest level of a chemical stressor in a toxicity test that did not cause harmful effect in a plant or...
No Observed Adverse Effects LevelThe highest level of a chemical stressor in a toxicity test that did not cause harmful effect in a plant or...
No Observed Effect LevelA level of exposure which does not cause observable harm.
No Organic Hazardous Air PollutantNo organic HAP is present at 0.1 percent by mass or more for OSHA-defined carcinogens as specified in 29 CFR...
No Reasonable Alternative(1) No land-based disposal sites, discharge point(s) within internal waters, or approved ocean dumping sites...
NO SHEENThis indicates that the limitation is no film or sheen on surface of receiving water.
No TillPlanting crops without prior seedbed preparation, into an existing cover crop, sod, or crop residues, and...
NO2Nitrogen dioxide.[40 CFR 53.1 (CFR 2013)]
No-Added Formaldehyde-Based ResinResin formulated with no added formaldehyde as part of the resin crosslinking structure in a composite wood...
Noble Metal1. Chemically inactive metal (such as gold). A metal that does not corrode easily and is much scarcer (and...
NocturiaExcessive urination at night
NocturnalAn animal that is only active at night.
Nocturnal AnimalAnimal that is only active at night.
Node1. A web server that facilitates the interface between database systems and the Exchange Network. It is a...
Node client1. A type of node that can submit, request, and receive data on the Network, but cannot respond to data...
Node (Telecommunications)Aggregation point, a branch point, or a point of interconnection on a Provider’s network, including a point...
No-Discharge ZoneArea of specified waters established pursuant to this regulation into which one or more specified discharges...
NodulationWhen root nodules containing symbiotic bacteria are formed, as commonly happens in legumes.
Noise1. Inherent variability that the model does not characterize (see definition for variability).
Noise Control Actto establish a means for effective coordination of Federal research and activities in noise control, to...
Noise Control System1. Any vehicle part, component or system the primary purpose of which is to control or cause the reduction of...
Noise Emission StandardNoise levels in § 205.152 or § 205.166.
Noise Emission Test1. Test conducted pursuant to the measurement methodology specified in § 204.54.
Noise Reduction Rating1. Single number noise reduction factor in decibels, determined by an empirically derived technique which...
Noise-Producing Product1. Any noise-producing or noise-reducing product for which regulations have been promulgated under part 211...
Noise-Reducing ProductAny noise-producing or noise-reducing product for which regulations have been promulgated under part 211; the...
No-Load Fan AmperageAmperage pulled by the fan motor when the fan is operating under no-load, specifically the amperage value the...
NomenclatureSet of rules to name and classify data in a consistent and unique way [Original source: International...
No-migration petitionsDemonstrations that fluids injected into a Class I hazardous waste well will remain in the injection zone for...
NominalReferring to the state of having desirable or acceptable ecological condition. The quantified standard...
Nominal Concentration1. Amount of an ingredient which is expected to be present in a typical sample of a pesticide product at the...
Nominal DiameterAn approximate measurement of the diameter of a pipe. Although the nominal diameter is used to describe the...
Nominal DollarForecast dollars that are not adjusted for inflation.
Nominal DollarsForecast dollars that are not adjusted for inflation.
Nominal ScaleMeasurement scale consisting of qualitative categories whose values have no inherent statistical order or...
Nominal VariableA quantitative variable whose attributes have no inherent order.
NomineeCandidate recommended by the State or Tribe or EPA for consideration for a CWA Recognition Award.
no-mow turfGrasses that do not need mowing and are allowed to reach their mature state, e.g., switch grasses and other...
Non U.S. Version VehicleA vehicle that is not certified and labeled by the U.S. EPA as meeting U.S. emission standards.
Non-101(a)(2) UseAny use unrelated to the protection and propagation of fish, shellfish, wildlife or recreation in or on the...
Nonaccount WaterMetered source water less metered water sales.
Non-Admitted PolicyAn insurance policy that does not require the insurer to transact business under the confines of local...
Nonagricultural PesticideIncludes any substance or mixture of substances that is a pesticide as defined in section 2(u) of the Federal...
Non-Agricultural SectorsGeneral term which refers to a combination of home/garden and industrial/commercial/governmental sectors.
Non-Analyzable ConstituentsConstituents that lack appropriate test methods or chemical standards and therefore cannot be properly...
Non-Aqueous Drilling FluidContinuous phase and suspending medium for solids is a water-immiscible fluid, such as oleaginous materials...
Non-Aqueous Phase Liquid1. Contaminants that remain undiluted as the original bulk liquid in the subsurface, e.g., spilled oil.
Nonaqueous Phase LiquidNAPLs are organic substances that are relatively insoluble in water and are less dense than water. See also...
Non-Aqueous Phase Liquid Contaminated ZoneSubsurface formation contaminated by nonaqueous-phase liquids (NAPLs)
Non-Aqueous Phase LiquidsHydrocarbons that exist as a separate immiscible phase when in contact with water or air. Differences in the...
Nonaseptic CoatingAny coating that is not subjected to high temperature steam, chemicals, or a combination of both to sterilize...
Nonatomizing Glaze Application TechniqueApplication of glaze in the form of a liquid stream without atomization. Such techniques include, but are not...
non-attainmentRefers to areas of the United States that have not met air standards for human health by deadlines set in the...
Non-Attainment AreaArea that does not meet one or more of the National Ambient Air Quality Standards for the criteria pollutants...
Nonattainment Area1. A nonattainment area is a region in which the level of a criteria air pollutant is higher than allowed by...
Nonattainment Area Base Year InventoryComprehensive, accurate, current inventory of actual emissions from sources of VOC and NOX emitted within the...
Nonattainment AreasIf the air quality in a geographic area meets or is cleaner than the National Ambient Air Quality Standard...
Non-automated Detergent Blending FacilityAny facility (including a truck or individual storage tank) at which detergent additive is blended using a...
Nonautomated Monitoring and Recording System1. Manual reading of values measured by monitoring instruments and manual transcription of those values to...
Non-Baseload ElectricityAn estimate of the marginal electricity produced from plants that are more likely to respond to incremental...
Non-Binding Allocation or RESPDocument prepared by EPA regional office which assigns relative percentages of estimated response costs to...
Non-Binding Allocations of ResponsibilityA process for EPA to propose a way for potentially responsible parties to allocate costs among themselves.
NonbiodegradableSubstance that cannot be broken down in the environment by natural processes. See biodegradable.
non-cancer risk1. The potential or probability to incur a noncancer health effect (e.g., lead poisoning, neurological...
Noncancer RisksRisks associated with health effects other than cancer.
Non-Carbon Concentrate ProcessAffected source that includes mercury retorts and melt furnaces at gold mine ore processing and production...
Noncarboxylic Acids and SaltsInorganic acids or salts with a non metal, other than carbon, attached to hydrogen, or an acid radical...
Non-Catalyzed EmissionExhaust emissions not subject to an effective aftertreatment device such as a functional catalyst or...
Noncertified ApplicatorAny person who is not certified in accordance with this part to use or supervise the use of restricted use...
Non-checklisted ItemsNot all program revisions for which States may be seeking authorization have Revision Checklists. Some...
Non-Chemical Based Depainting EquipmentAny depainting equipment or technique, including, but not limited to, media blasting equipment, that can...
Nonchemical StressorBiological, radiological, and other physical stressors; socioeconomic stressors; and lifestyle conditions...
Noncoding, Nonexpressed Nucleotide SequenceNucleotide sequences are not transcribed and are not involved in gene expression. Examples of noncoding...
Non-Coding Regulatory RegionSegment of introduced genetic material for which:(1) The regulatory region and any inserted flanking...
Noncombustible MaterialMaterials that are not flammable, capable of catching fire, or burning.
Non-Combustion Source EmissionEmission from sources that are not combustion sources.
Noncommercial Education Broadcasting EntityAny noncommercial educational broadcasting station (and/or its legal nonprofit affiliates) as defined and...
Noncommercial FuelCombustible product that is not marketed as a commercial fuel, but is used as a fuel for nonroad engines. For...
Noncommercial Purpose FuelWith respect to motor fuel, means not for resale.
Noncommercial Scientific InstitutionInstitution that is not operated on a ‘‘commercial’’ basis, as that term is defined in paragraph (b)(1) of...
Non-Community Water System1. A public water system that is not a community water system. There are two types of NCWSs: transient and...
Noncompetitive InhibitorBinds at another site instead of the active site.
NoncomplianceThe failure to act according to accepted standards, orders, or regulations.
Non-Compliance CoalAny coal that emits greater than 3.0 pounds of sulfur dioxide per million BTU when burned.
Noncompliance Computer ProgramThe computer program used to calculate noncompliance penalties under section 120 of the Clean Air Act. This...
Noncompliance Penalties Instruction ManualNoncompliance Penalties Instruction Manual which accompanies these regulations. This Manual appears as...
Noncompliant Coating/Contact AdhesiveFinishing material, contact adhesive, or strippable booth coating that has a VHAP content (VOC content for...
Noncompliant Engine1. Engine that was originally covered by a certificate of conformity, but is not in the certified...
Noncompliant EquipmentEngine or equipment that was originally covered by a certificate of conformity but is not in the certified...
Noncompliant Vehicle1. Relating to a vehicle that was originally covered by a certificate of conformity, but is not in the...
NonconformanceThe nonfulfillment of a requirement. Nonconformances include the failure to conform to EMS programmatic...
Nonconforming Engine1. Engine which is not covered by a certificate of conformity prior to final or conditional admission (or for...
Nonconforming EquipmentEngine or equipment not covered by a certificate of conformity that would otherwise be subject to emission...
Nonconforming Locomotive1. Locomotive or locomotive engine which is not covered by a certificate of conformity prior to importation...
Nonconforming Locomotive EngineLocomotive or locomotive engine which is not covered by a certificate of conformity prior to importation or...
Nonconforming Marine Engine1. Marine SI engine which is not covered by a certificate of conformity prior to importation or being offered...
Nonconforming Nonroad EngineNonroad engine which is not covered by a certificate of conformity prior to final or conditional admission...
Non-conforming VehicleA vehicle that is not covered by a Certificate of Conformity prior to importation into the U.S. (either a...
Nonconforming Vehicle1. Vehicle not covered by a certificate of conformity that would otherwise be subject to emission standards.
NonconformityNon-fulfillment of a requirement. A nonconformity can be any deviation from relevant work standards...
Non-Consensual Judicial Order1. Any order issued by the court other than a consent order or administrative default order.
Nonconservative PollutantPollutants that are mitigated by natural biodegradation or other environmental decay or removal processes in...
Nonconsumptive UseWater withdrawn and returned to the source.
Nonconsumptive Water Use1. Use of water which does not decrease its availability for other uses.
Non-Contact Cooling Water1. Water used for cooling which does not come into direct contact with any raw material, product, byproduct...
Non-Contact Cooling Water PollutantPollutants present in process waste water.
Non-Contact Cooling Water SystemOnce-through drain, collection and treatment system designed and operated for collecting cooling water which...
Noncontact Cooling Water WellsClass V wells that are used to inject noncontact cooling water that contains no additives and has not been...
Non-Contaminated Storm Water1. Storm water which does not come in direct contact with CWT wastes, the waste handling and treatment areas...
Non-Continental Liquid Oil-Fired SubcategoryAny oil-fired electric utility steam generating unit that burns liquid oil and is located outside the...
Noncontinuous (discharge)Discharges which are not continuous, as defined in 40 CFR part 122.2, may consist of the following factors...
Non-Continuous Discharger1. Except as provided in paragraph (k)(2) of this section, a non-continuous discharger is a mill which is...
Non-Conventional ImpoundmentUsed for managing liquids from uranium recovery operations and contains uranium byproduct material or...
Nonconventional Onsite Treatment SystemSystem using technologies or combinations of technologies that are used where conventional septic systems...
Non-Conventional Pollutant1. Any pollutant which is not a statutorily listed or which is poorly understood by the scientific community.
Nonconventional Pollutant1. Any pollutant that is not included in the list of conventional or toxic pollutants in 40 CFR Part 401...
Nonconventional PollutantsAll pollutants that are not included in the list of conventional or toxic pollutants in Part 401. Includes...
Noncorrugating Medium Furnish Subdivision MillMills where recycled corrugating medium is not used in the production of paperboard.
Non-Crude FeedstockAny petroleum product or natural gas liquid that enters the refinery to be further refined or otherwise used...
Noncultivated CroplandNoncultivated cropland includes permanent hayland and horticultural cropland.
NONCURRENT RECORDSRecords no longer required to conduct agency business and therefore ready for final disposition. See also...
Non-Cyanide Electrolytic Plating and Electropolishing ProcessesElectroplating, electroforming, and electropolishing that uses or emits any of the plating and polishing...
Nondedicated Formulation OperationEquipment used to formulate numerous products.
Non-Dedicated Pesticide Active Ingredient Process UnitProcess unit that is not a dedicated PAI process unit.
Nondedicated Recovery DeviceRecovery device that receives material from more than one PMPU.
Nondedicated Solvent Recovery OperationDistillation unit or other purification equipment that receives used solvent from more than one MCPU.
Nondegradable Metal WasteWaste containing metals which are resistant to environmental changes.
Nondegradable WasteAny waste that does not decompose through chemical breakdown or microbiological activity. Examples are, but...
Non-DegradationAn environmental policy which disallows any lowering of naturally occurring quality regardless of...
Nondestructive MethodExamination of the sample without materially altering the sample's integrity
Non-Detect1. Concentration value below the minimum level that can be reliably measured by the analytical method.
Nondetect Data1. For the purposes of this subpart, any value that is below the method detection limit.
Non-DetectsPollutants that are measured at concentrations below the sample detection limit concentration. The Advanced...
Nondeterministic Behavior AnalysisType of regression analysis which makes no assumptions about the sample size or population distribution.
Non-dietary ingestionIngestion of non-food substances, typically resulting from the mouthing of hands and objects.
Nondirect Contact Evaporator Recovery FurnaceKraft or soda recovery furnace that burns black liquor that has been concentrated by indirect contact with...
Nondischarging Treatment PlantA treatment plant that does not discharge treated wastewater into any stream or river. Most are pond systems...
Nondiscriminatory ProgramThat a program in one State does not result in discriminatory effects on other States or sources outside the...
Noneconomic Impact ModelModels that evaluate the effects of contaminants on a variety of noneconomic parameters, such as on crop...
Non-Electrolytic PlatingProcess that uses or emits any of the plating and polishing metal HAP, as defined in this section, in which...
Non-Emergency FlareAny flare that is not an emergency flare as defined in this subpart.
Non-Emission Related Maintenance1. Maintenance which does not substantially affect emissions and which does not have a lasting effect on the...
Non-EmulsifierSurfactants used in hydraulic fracturing to break emulsions between fracturing fluids and formation residual...
Non-Enclosed ProcessAny equipment system (such as an open-top reactor, storage tank, or mixing vessel) in which a chemical...
Non-Endangerment of Underground Sources of Drinking WaterProhibition of movement of fluid containing any contaminant into underground sources of drinking water, if...
Non-EPA Government Agency by FunctionAny government agency which may be, but which does not have to be, the EPA, categorized by function.
Non-Equatorial WaveA wave that is propagated along an edge or barrier, such as a continental margin, and that is not associated...
Nonequivalent Comparison Group Design1. Evaluation designs that use nonrandomized comparison groups to evaluate program effects.
Non-Essential Amino AcidsRefers to those amino acids that your body can create out of other chemicals found in your body.
nonessential turfTurf not necessary to achieve the intended goals of the facility or jurisdiction.
Non-Ester Renewable Diesel1. Motor vehicle fuel or fuel additive which is all the following: registered as a motor vehicle fuel or fuel...
Nonestrogen-Dependent CancerCancer that is not dependent upon the presence of estrogen for metastasis or growth.
Nonexclusive GoodsA good which because of its physical properties is not easily limited to an individual or paid for by an...
Non-Executive Branch EntityPerson or organization established, operated, and controlled by individual(s) acting outside the scope of any...
NONEXPENDABLE PERSONAL PROPERTYPersonal property with a useful life of at least two years and an acquisition cost of $500 or more...
Non-experimental DataData not produced by an experiment or quasi-experiment.
Non-Federal FacilityFacilities that are not federal facilities.
Nonferrous Metal1. Any pure metal other than iron or any metal alloy for which an element other than iron is its major...
Nonferrous Metal ManufacturingManufacturing operations for producing or recovering nonferrous metals from raw materials or scrap
Non-Ferrous MetalsNonmagnetic metals such as aluminum, lead, and copper. Products made all or in part from such metals include...
Nonferrous MetalsRefers to nonmagnetic metals such as aluminum, lead, and copper. Products made from nonferrous metals include...
Nonferrous Ornamental Metal LacquerClear coating formulated and recommended for application to ornamental architectural metal substrates...
Nonferrous Ornamental Metal Surface ProtectantClear coating formulated and recommended for application to ornamental architectural metal substrates...
Non-Finished Gasoline Petroleum ProductLiquid petroleum products that have boiling ranges greater than 75 degrees Fahrenheit, but less than 450...
Nonflat CoatingCoating that is not defined under any other definition in this section and that registers a gloss of 15 or...
Nonflat Paint ProductCoating which, when fully dry, registers a specular gloss greater than 15 on an 85° gloss meter or greater...
Non-Food Pesticide UseThose uses that are not likely to yield residues in food or feed crops, meat, milk, poultry or egg.
Nonforested LandLand that is not forestland. [40 CFR 80.1401 (CFR 2013)]
Nonfractionating PlantAny gas plant that does not fractionate mixed natural gas liquids into natural gas products.
Non-FriableMeans material in a school building which when dry may not be crumbled, pulverized, or reduced to powder by...
Nonfriable Asbestos-Containing MaterialsAny material containing more than one percent asbestos (as determined by Polarized Light Microscopy) that...
Nonfriable MaterialMaterial in a school building which when dry may not be crumbled, pulverized, or reduced to powder by hand...
NongameWildlife species that are not hunted for sport.
Nongaseous LossSolvent that is not volatilized during fiber production, and that escapes the process and is unavailable for...
Non-Geospatial DatasetDataset that does not include geospatial information.
Non-Governmental EntitiesInclude, but are not limited to, voluntary consensus standards, environmental standard setting organizations...
Nongovernmental OrganizationAn entity with an association that is based on the interests of its members, individuals, or institutions. It...
Non-groundwater ControlAny engineering control not related to groundwater, such as barriers or caps.
Nonhandheld EngineRelating to an engine (or equipment) subject to the standards of this part that is not a handheld engine (or...
Nonhandheld EquipmentRelating to an engine (or equipment) subject to the standards of this part that is not a handheld engine (or...
Non-Hazardous Air Pollutant BinderBinder formulation that does not contain any substance that is required to be listed in Section 3 of a safety...
Non-Hazardous Air Pollutant Coating1. Coating with HAP contents below 0.1 percent by mass for Occupational Safety and Health...
Non-Hazardous Air Pollutant MaterialFor the purposes of this subpart, a primer, topcoat, specialty coating, chemical milling maskant, cleaning...
Non-Hazardous Air Pollutant SolventSolvent (including thinners and cleaning solvents) that contains less than 0.1 percent by mass of any...
Nonhazardous Industrial Process WasteRefers to waste that is neither municipal solid waste nor considered a hazardous waste under Subtitle C of...
Nonhazardous Industrial WasteIndustrial process waste in wastewater not considered municipal solid waste or hazardous waste under RARA.
Non-Hazardous Secondary MaterialSecondary material that, when discarded, would not be identified as a hazardous waste under Part 261 of this...
Non-Hazardous Waste ProcessingAny operations that transform discarded non-hazardous secondary material into a non-waste fuel or non-waste...
Non-Hodgkin's LymphomaA group of cancers of the lymphoid system.
Nonhomologous DNA End JoiningNon-homologous DNA end joining (NHEJ) can only repair double-strand breaks in which two DNA ends are rejoined...
Non-HSWATerm used to describe federal requirements that are written under RCRA provisions that predate HSWA. For...
Non-HSWA ClusterNon-HSWA Clusters cover a period of one year and apply to rules issued between July 1, 1984, and June 30...
Non-Hydrolyzable LipidsLipids which do not have a functional group which reacts with water. This group includes steroids and many...
Nonimpervious Solid SurfaceSolid surfaces which are porous and are more likely to absorb spilled PCBs prior to completion of the cleanup...
Non-Indexed JournalJournals that do not deposit articles in PMC.
Non-Indexed JournalsJournals that do not deposit articles in PMC.
Nonindigenous Microbial PesticideGenerally, a microbial pesticide brought into a geographic area from outside that area.
Non-Indigenous Species1. Nonnative plant, animal, or microbe species introduced into a region that then overwhelms, crowds out, or...
Non-Industrial POTWPOTW that does not meet the definition of a POTW as defined above.
Nonindustrial SourceAny source of pollutants which is not an industrial source.
Non-Industrial UseUse other than at a facility where chemical substances or mixtures are manufactured, imported, or processed.
Noninstitutionalized PopulationIncludes all people who live in group quarters other than institutions.
Nonintegrated Equipment ManufacturerEquipment manufacturer that is not an integrated equipment manufacturer. Equipment manufacturers that...
Non-Integrated Refueling Emission Control System[40 CFR 86.1803-01 (CFR 2018)]
Non-Ionic Polymer(NON-eye-ON-ick) A polymer that has no net electrical charge.
Non-ionizing Electromagnetic Radiation1. Radiation that does not change the structure of atoms but does heat tissue and may cause harmful...
Non-Ionizing RadiationRadiation that has enough energy to move atoms or cause them to vibrate, but not enough to remove electrons...
Non-Isolated Intermediate1. Any intermediate that is not intentionally removed from the equipment in which it is manufactured...
Nonisolated Intermediate1. Any intermediate that is not intentionally removed from the equipment in which it is manufactured...
Non-Jurisdictional WatersWaters or water features that are not identified in paragraph (1)(i), (ii), (iii), or (iv) of this...
Non-Linear Dose Response1. A pattern of frequency or severity of biological response that does not vary directly with the amount of...
Nonlinear Dose-Response ModelMathematical relationship that cannot be expressed simply as the change in response being proportional to the...
NonlinearitiesOccur when changes in one variable cause a more than proportionate impact on another variable.
Non-Liquid Polychlorinated BiphenylsMaterials containing PCBs that by visual inspection do not flow at room temperature (25 °C or 77 °F) or from...
Non-Locomotive-Specific Engine1. Engine that is sold for and used in non-locomotive applications much more than for locomotive applications.
Nonmarket GoodsGoods which cannot be made exclusive and, therefore, markets cannot allocate the good efficiently.
Non-Mercury Hazardous Air Pollutant MetalsAntimony (Sb), Arsenic (As), Beryllium (Be), Cadmium (Cd), Chromium (Cr), Cobalt (Co), Lead (Pb), Manganese...
Non-Messenger RNARNA that does not code for protein.
Non-Metal MiningNon-metallic minerals include salt, gypsum, potash, phosphate, borax and other minerals used in the chemical...
Nonmetallic MineralAny of the following minerals or any mixture of which the majority is any of the following minerals:(1)...
Nonmetallic Mineral Processing PlantAny combination of equipment that is used to crush or grind any nonmetallic mineral wherever located...
NonmetalsA chemical element that is not classed as a metal because it does not exhibit most of the typical metallic...
Non-Methane HydrocarbonThe sum of all hydrocarbon air pollutants except methane; significant precursors to ozone formation.
Non-Methane Hydrocarbon Equivalent1. Sum of the carbon mass emissions of non-oxygenated non-methane hydrocarbons plus the carbon mass emissions...
Nonmethane Hydrocarbons Sum1. Sum of all hydrocarbon species except methane, as measured according to 40 CFR part 1065.[40 CFR 1036.801...
Non-methane Non-ethane Hydrocarbon EquivalentMeaning given in 40 CFR 1065.1001.
Nonmethane Organic CompoundsNonmethane organic compounds, as measured according to the provisions of § 60.754.
Non-Methane Organic GasAs in section 241(3) Clean Air Act as amended (42 U.S.C. 7581(3)).
Non-Methane Organic Gases1. The sum of all organic air pollutants. Excluding methane; they account for aldehydes, ketones, alcohols...
Nonmethane Total Organic CompoundEmissions of total organic compounds, excluding methane, that serve as a surrogate measure of the total...
Non-Methane Volatile Organic CompoundOrganic compounds, other than methane, that participate in atmospheric photochemical reactions.
Non-Methane Volatile Organic CompoundsOrganic compounds, other than methane, that participate in atmospheric photochemical reactions.
Non-Mycotoxic FungusFungus that does not produce any toxic chemical compounds
Non-National Priorities List Potentially Responsible Party SearchThe non-NPL potentially responsible party (PRP) search is to identify PRPs at non-NPL or removal action sites.
Non-Natural Gas-Driven Process ControllerInstrument that is actuated using other sources of power than pressurized natural gas; examples include...
Non-Neoplastic Hematologic and Lymphocytic DisordersA disorder of the blood. Some nonmalignant hematologic disorders may lead to leukemia.
Non-NPL StatusA code identifying the pipeline status of a non-NPL site.
Non-Objection Notice1. Privilege granted by the Administrator to import a specific individual shipment of used controlled...
Non-oily Machinery Wastewater1. The combined wastewater from the operation of distilling plants, water chillers, valve packings, water...
Non-Oxygenated Hydrocarbon EmissionsOrganic emissions measured by a flame ionization detector, excluding methanol. [40 CFR 86.1803-01 (CFR 2018)]
NonparametricStatistical methods that make no assumptions regarding the distribution of the data.
Non-Parametric Regression AnalysisType of regression analysis which makes no assumptions about the sample size or population distribution.
Nonparametric Statistical Method1. A procedure for making statistical inferences without assuming that the population distribution has any...
Non-Party VesselVessel flagged by a country that is not a party to Annex VI.
Non-Passenger AutomobileMeaning given by the Department of Transportation at 49 CFR 523.5. This term is synonymous with “light truck.”
Nonpathogenic MicroorganismMicrorganisms that do not cause disease and are often helpful to humans and the environment surrounding them.
Nonperishable Raw Agricultural CommodityAny raw agricultural commodity not subject to rapid decay or deterioration that would render it unfit for...
Nonpersistent ChemicalA chemical substance that has a short environmental half-life
Non-Persistent OilInclude:(1) A petroleum-based oil that, at the time of shipment, consists of hydrocarbon fractions:(A) At...
Nonpersistent PesticidePesticides which break down comparatively quickly in the environment.
Non-Petroleum Diesel Fuel1. Diesel fuel that contains at least 80 percent mono-alkyl esters of long chain fatty acids derived from...
Non-Petroleum OilOil of any kind that is not petroleum-based, including but not limited to: Fats, oils, and greases of animal...
Nonpetroleum Renewable ResourceInclude, but are not limited to the following: plant oils; animal fats and animal wastes, including poultry...
Non-Plug-in Combustion ControlReplacement, in a cell burner boiler, of the portions of the waterwalls containing the cell burners by new...
Non-Point Air EmissionsAll releases of the EPCRA Section 313 chemical to the air that are not released through stacks, vents, ducts...
Nonpoint emissionsEmissions from stationary sources or from diffuse stationary sources for which emissions have not been...
Non-Point Source1. Source of pollution in which wastes are not released at one specific, identifiable point but from a number...
Nonpoint Source1. Any source of pollution not associated with a distinct discharge point. Includes sources such as...
Nonpoint Source EmissionEmission from a diffuse source of pollution, having no single point of origin. This term is commonly used to...
Non-Point Source Management ProgramUnder the Non-point Source Management Program, states can receive funding to control non-point sources of...
Non-Point Source PollutionPollution that occurs when rainfall, snowmelt, or irrigation runs over land or through the ground, picks up...
Nonpoint Source Pollution1. Nonpoint Source: Any source of pollution not associated with a distinct discharge point. Includes sources...
Non-Point SourcesDiffuse pollution sources (i.e. without a single point of origin or not introduced into a receiving stream...
Nonpoint SourcesDiffuse pollution sources (i.e., without a single point of origin or not introduced into a receiving stream...
Nonpolar Organic CompoundOrganic compounds which do not have a net molecular electric dipole moment.
Non-Polychlorinated Biphenyls TransformerAny transformer that contains less than 50 ppm PCB; except that any transformer that has been converted from...
Nonporous SubstrateSurface that is impermeable to liquids. Examples include metal, rigid plastic, flexible vinyl, and rubber.
Non-Porous SurfaceSmooth, unpainted solid surface that limits penetration of liquid containing PCBs beyond the immediate...
Non-Potable1. (non-POE-tuh-bull) Water that may contain objectionable pollution, contamination, minerals, or infective...
Non-Powered DamDams that do not have any electricity generation equipment installed.
Nonprescription DrugMedicines that can be sold legally without a drug prescription.
Nonpressure PipePipe used to drain waste and wastewater, to vent gases, and to channel cable and conduit in various...
Non-Probabilistic Decision TheoryVariation of decision theory that contains no assumptions about the probabilities of possible outcomes.
Non-probability SampleA sample not produced by a random process.
Non-Probability SamplingWhen the units of a sample are chosen so that each unit in the population does not have a calculable non-zero...
Nonprocess Waste WaterWater used only for tread cooling.
Non-Process WastewaterSanitary wastewater, non-contact cooling water, water from laundering, and non-contact storm water...
Non-Production ActivityProcesses that are commonly performed in manufacturing, but do not directly contribute to making a product...
Non-Production-Related Waste1. Waste that is not production-related; for example, waste associated with catastrophic events and cleanup...
Non-Productive Sow DaysDays a sow is neither lactating or gestating.
Nonpromotional RatesRates that do not encourage additional consumption by water users.
Nonpromotional Water RateRates that do not encourage additional consumption by water users.
Non-Proteinogenic Amino AcidsAmino acids not found naturally in any genetic code.
Non-Public Water SystemA water system that does not provide water for human consumption through at least 15 service connections, or...
Non-Qualifying Fuel UseUse of renewable fuel in an application other than transportation fuel, heating oil, or jet fuel.
Non-Radiological ProgressionA non-radiological determination of disease progression based on symptoms or other findings.
Non-Reactive SolidAny substance listed in Appendix A or B of this part with two threshold planning quantity values, the higher...
Non-Reactive SpeciesMolecules or ions that do not tend to react chemically.
Non-Reactor Batch Process VentBatch process vent originating from a unit operation other than a reactor. Non-reactor batch process vents...
Non-Reactor Process VentBatch or continuous process vent originating from a unit operation other than a reactor. Non-reactor process...
NONRECORD MATERIALSU.S. Government-owned documentary materials excluded from the legal definition of records or not meeting the...
Non-Recovery Coke Oven BatteryGroup of ovens connected by common walls and operated as a unit, where coal undergoes destructive...
Non-Recovery CokemakingCokemaking operations for production of metallurgical coke (furnace coke and foundry coke) without recovery...
Nonrecurrent Expenditure1. Those expenditures which are shown by the recipient to be of a nonrepetitive, unusual, or singular nature...
Nonrefillable ContainerContainer that is not a refillable container and that is designed and constructed for one-time use and is not...
Nonregenerative Carbon AdsorberCarbon adsorber vessel in which the spent carbon bed does not undergo carbon regeneration in the adsorption...
NonrelativeAny household member, including foster children, living in the housing unit but not related to the...
Non-Renewable ComponentAny material (or any portion thereof) blended into biogas or RNG that does not meet the definition of...
Nonrenewable EnergyMost of the energy consumed in the United States is from nonrenewable energy sources: Petroleum products...
Non-Renewable Feedstock1. Feedstock that does not meet the definition of renewable biomass.[85 FR 7016; Renewable Fuel Standard...
Nonrenewable resource1. A natural resource that cannot be produced, regrown, or reused fast enough to keep up with how quickly it...
Non-renewable resourcesNatural resources that cannot be regenerated or grown at a sustainable rate to meet demand, including fossil...
Nonrepairable Equipment1. Technically infeasible to repair a piece of equipment from which a leak has been detected without a...
Nonresidential Customer1. A commercial or industrial utility customer.
Nonresilient FlooringFloor of a mineral content that is not flexible. “Nonresilient flooring” includes, but is not limited to...
Non-respondentA person who fails to answer either a questionnaire or a question.
Non-response Bias1. The bias created by the failure of part of a sample to respond to a survey or answer a question. If those...
Nonrestricted Access AreaAny area other than restricted access, outdoor electrical substations, and other restricted access locations...
Non-Return Dip CupA dip cup that does not allow the liquid to reenter and potentially contaminate the storage container.
Non-RIN-Generating Foreign ProducerForeign renewable fuel producer that has been registered by EPA to produce renewable fuel for which RINs have...
Nonrival GoodsA good the enjoyment or benefit of which by one person does not reduce another person's ability to enjoy or...
NONROADComputer model that calculates past, present, and future emission inventories for all nonroad equipment...
Nonroad Diesel EngineEngine that is designed to operate with diesel fuel that meets the definition of nonroad engine in 40 CFR...
Nonroad Diesel FuelAny NRLM diesel fuel that is not ‘‘locomotive or marine (LM) diesel fuel.’’
Non-Road EmissionsPollutants emitted by combustion engines on farm and construction equipment, gasoline-powered lawn and garden...
Nonroad Engine1. An internal combustion engine (including the fuel system) that is: 1) used in a nonroad vehicle, 2)...
Nonroad Equipment1. Piece of equipment that is powered by one or more nonroad engines.[40 CFR 1039.801 (CFR 2013)]
Nonroad Equipment Manufacturer1. Any person engaged in the manufacturing or assembling of new nonroad vehicles or equipment or importing...
Nonroad, Locomotive, or Marine Diesel FuelAny diesel fuel or other distillate fuel that is used, intended for use, or made available for use, as a fuel...
Nonroad Mobile Source1. Mobile sources not found on roads and highways (e.g., airplanes, trains, lawn mowers, construction...
Nonroad Mobile Source Emissions1. Emission from sources such as farm and construction equipment, gasoline-powered lawn and garden equipment...
Nonroad Mobile Sources1. Sources such as farm and construction equipment, gasoline-powered lawn and garden equipment, and power...
Nonroad sourcesVehicles and equipment that operate off public roadways or highways. This includes vehicles used on roads for...
Nonroad Vehicle1. A vehicle that is not capable of being safely and practically driven on public roads or highways...
Nonroad Vehicle Manufacturer1. Any person engaged in the manufacturing or assembling of new nonroad vehicles or importing such vehicles...
Non-Rodent ModelResearch animal models that do not include mice, rats, etc, but that might include non-human primates, cats...
Non-RulemakingAny federal agency process or action that does not involve the formulation, amendment or repeal of a...
NonrulemakingA type of publication that does not result in a rule, for example: a Notice of Hearing Dates.
nonsealed DP toolsSampling tools that are not sealed as they are advanced through the soil. Examples of these tools are barrel...
Nonselective HerbicideKills or significantly retards growth of most higher plant species.
Nonsense-Mediated DecayNonsense-Mediated Decay is the widely conserved process in eukaryotes whereby certain alternatively spliced...
Nonsignificant Categorical Industrial User1. An IU subject to categorical pretreatment standards under 40 CFR 403.6 and 40 CFR chapter I, subchapter N...
Nonsignificant Discharge FacilityA municipal or industrial wastewater discharge facility that is not defined as a significant discharge...
Nonskid Specialty CoatingAny coating applied to the horizontal surfaces of a marine vessel for the specific purpose of providing slip...
Non-SmokerIndividual who does smoke tobacco.
Non-Solvent-Based ResinAmino/phenolic resin manufactured without the use of a solvent as described in the definition of...
Nonstandard BatchBatch process that is operated outside of the range of operating conditions that are documented in an...
Non-Steroidal Anti-Inflammatory AgentAnti-inflammatory agents that are non-steroidal in nature. In addition to anti-inflammatory actions, they...
Non-Stop DecayIn eukaryotes, the non-stop decay mechanism recognizes and degrades mRNAs that lack a stop codon. It releases...
Nonstructural AdhesiveAdhesive that bonds nonload bearing aerospace components in noncritical applications and is not covered in...
Nonstructural ControlA practice that does not require construction of a facility to control urban runoff.
Nonstructural practiceA practice that prevents or reduces runoff problems in receiving waters by reducing the generation of...
Nonsudden Accidental OccurrencesFor purposes of TSDF financial assurance, events that take place over time and involve continuous or repeated...
Non-Target EffectAction of a stressor on other than the intended characteristic of a system
Non-Target Organism1. Any organism for which the pesticide was not intended to control.
Nontarget Organism1. Any organism for which pesticidal control was either not intended or not legally permitted by application...
Non-Target PlantAny [plant] for which the pesticide was not intended to control.
Non-Target PopulationSample Frame may contain non-target elements, e.g., misidentified sample units.
Non-Target Species1. Species that were not targeted in the fisheries; by-catches.
NONTEXTUAL RECORDSA collective term usually applied to electronic, audiovisual, cartographic, remote-sensing imagery...
non-threshold effect1. An effect (usually an adverse health effect) for which there is no exposure level below which the effect...
non-threshold toxicant1. A chemical for which there is no exposure level below which an adverse health outcome is not expected to...
Non-tidal wetlandA wetland that is not subject to the ebb and flow of tidal waters. Non-tidal wetlands contiguous to tidal...
Non-Tidal WetlandsWetlands that are not exposed to the periodic change in water level that occurs due to astronomical tides.
nontidal wetlandsWetlands that are not exposed to the periodic change in water level that occurs due to astronomical tides...
Non-Title V Permit1. Federally enforceable permit administered by the permitting authority pursuant to the Clean Air Act and...
Nontrailerable BoatVessel whose length is 26.0 feet or more, or whose width is more than 8.5 feet.

1,191 of 30,736 terms in Environment terminology (MLC-0121). Request the full dataset.