Environment terminology · MLC-0121
Environment terms: P (2,732)
- P WaveA P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same...
- Pacific Decadal OscillationA recently described pattern of climate variation similar to ENSO though on a timescale of decades and not...
- Pacific Northwest RegionThe drainage within the United States that ultimately discharges into: (a) the Straits of Georgia and of Juan...
- Pacific Standard TimeEight hours behind Coordinated Universal Time
- PackageContainer in which a hearing protective device is presented for purchase or use. The package in some cases...
- Package PlantTerm commonly used to describe an aerobic treatment unit serving multiple dwellings or an educational, health...
- PackagingThe assembly of one or more containers and any other components necessary to ensure minimum compliance with a...
- Packaging FoamFoam used exclusively during shipment or storage to temporarily enclose items.
- Packaging PlasticsPlastic products used for packaging for food, beverages and similar items.
- Packed Bed ScrubberAn air pollution control device in which emissions pass through alkaline water to neutralize hydrogen...
- Packed Bed Wet ScrubberCommon type of gas absorber in which scrubbing liquid is dispersed over packed columns containing packing...
- Packed TowerA pollution control device that forces dirty air through a tower packed with crushed rock or wood chips while...
- Packed Tower AerationA method of treating water to remove volatile organic chemical (VOCs) contaminants. As water is mixed with...
- Packer1. A mechanical device set immediately above the injection zone that seals the outside of the tubing to the...
- Packerhead MethodUsed in the manufacture of concrete pipe. Metal pipe forms are placed onto openings in a circular casting...
- PackinghousePlant that both slaughters animals and subsequently processes carcasses into cured, smoked, canned or other...
- PaddockSubdivision of a pasture designed to provide short-duration grazing followed by an appropriate (related to...
- Paddock Runoff(Runoff from a) subdivision of a pasture designed to provide short-duration grazing followed by an...
- PaddocksSubdivision of a pasture designed to provide short-duration grazing followed by an appropriate (related to...
- Paecilomyces fumosoroseusA naturally occurring fungus that infects and kills several kinds of insects.
- Paecilomyces lilacinusA naturally occurring fungus, that infects eggs, juveniles, and adult females of various plant pathogenic...
- PageA page is an individual computer file containing displayed information viewed in a Web browser which can be...
- PaginationThe process of performing page makeup automatically.
- PailCylindrical or rectangular metal container with walls of 29 gauge or thicker and a capacity of 7.6 to 45.4...
- PaintMaterial applied to a substrate for decorative, protective, or functional purposes. Such materials include...
- Paint and Coating RemovalApplication of a chemical or use of another method to remove, loosen, or deteriorate any paint, varnish...
- Paint ElectrodepositionApplication of a coating using a water-based electrochemical bath process. The component being coated is...
- Paint ExchangeProgram in which consumers, excluding architectural coating manufacturers and importers, may drop off and...
- Paint LineSet of coating operations which includes a topcoat operation and, if present, includes electrodeposition...
- Paint Overspray ArrestorParticle collection device (e.g., filter) used to control particle emissions from paint spraying operations.
- Paint ShopCollection of all areas at the facility in which new automobile or new light-duty truck bodies, or body parts...
- Paint SticksContain liquid or chalky paint used for marking treated cows.
- Paint Stripping1. Removal of dried coatings from wood, metal, plastic, and other substrates. A single affected source may...
- Paint Stripping FacilityAny shop, business, location, or parcel of land where paint stripping or miscellaneous surface coating...
- Painted SurfaceComponent surface covered in whole or in part with paint or other surface coatings.
- PainterAny person who spray applies coating.
- Painting-Immersion ProcessApplying an organic coating to a part using processes such autophoretic and electrophoretic painting.(1)...
- Paints and Allied ProductsMaterials such as paints, inks, adhesives, stains, varnishes, shellacs, putties, sealers, caulks, and other...
- Paints and Allied Products ManufacturingProduction of paints and allied products, the intended use of which is to leave a dried film of solid...
- Paints and Allied Products Manufacturing ProcessAll the equipment which collectively function to produce a paint or allied product. A process may consist of...
- Palatable(PAL-a-ta-ble) Water at a desirable temperature that is free from objectionable tastes, odors, colors, and...
- Palatable WaterWater, at a desirable temperature, that is free from objectionable tastes, odors, colors, and turbidity.
- PalateRoof of the mouth
- Palatine Tonsil1. A round-to-oval mass of lymphoid tissue embedded in the lateral wall of the pharynx situated on each side...
- PaleoclimatePast or ancient climates.
- Paleoenvironmental ProxyAn environmental remnant of the past (pollen grains, tree rings, lake sediments, pack rat middens, ice cores...
- Pallet1. Refers to a portable platform made of wood or plastic lumber used for storing or moving cargo or freight...
- Pallial LineA linear impression which marks the attachment of the mantle on the inner surface of a bivalve shell.
- Palmer Drought Severity IndexIndicator. based on temperature. precipitation. and soil type. of long-term deficits or surpluses of soil...
- PalpSensory appendages located near the mouth on many invertebrates that are used to move and sense food.
- PalpitationUnduly rapid heart beat which is noted by the patient; it may be regular or irregular
- PalpsSensory appendages located near the mouth on many invertebrates that are used to move and sense food.
- PaludificationThe expansion of a bog caused by the gradual rising of the water table as accumulation of peat impedes water...
- PalustrinePalustrine systems include any inland wetland dominated by trees, shrubs, or persistent emergent vegetation...
- Palustrine Wetland1. Wetlands occurring in the Palustrine System, one of five systems in the classification of wetlands and...
- Palustrine WetlandsPalustrine wetlands include nontidal wetlands dominated by trees, shrubs, persistent emergents, emergent...
- Pancreas1. A nodular organ in the abdomen that contains a mixture of endocrine glands and exocrine glands. The small...
- Pancreatic DisordersA non-neoplastic or neoplastic disorder that affects the pancreas. Representative examples of non-neoplastic...
- Pancreatic Duct1. Ducts that collect pancreatic juice from thepancreas and supply it to the duodenum.
- Pancreatic Polypeptide-Secreting CellA group of islet cells (10-35%) which secrete pancreatic polypeptide, a hormone that regulates appetite and...
- Pancreatitis1. Inflammation of the pancreas that can cause severe pain. Laboratory tests that indicate pancreatitis...
- Pandemic1. A widespread epidemic throughout an area, nation or the world.
- PanelThin (usually less than two inches thick), flat, usually rectangular piece of particleboard, medium-density...
- Panel DataA special form of longitudinal data in which observations are collected on the same sample of respondents...
- Panel InterviewingConducting repeated interviews with the same group of respondents over time.
- Panel ProducerManufacturing plant or other facility that manufactures (excluding facilities that solely import products)...
- Panicum virgatumBiofuels - made from crops of native grasses, such as fast- growing switchgrass - could reduce the nation's...
- PanneShallow depressions or flats, often occurring in and adjacent to marshes in the high intertidal that zone...
- pannesCalcareous, wet, interdunal depressions that form near the water table in interdunal areas.
- Panoramic LandscapeA landscape viewing situation characterized by an unobstructed or com- plete view of the area in all...
- Pantoea agglomerans strain E325; NRRL B-21856Used to control fire blight in apples and pears through air blast spray application.
- Pantone Matching SystemColor charts that have more than 1000 preprinted color patches of blended inks, used to identify, display, or...
- Paper1. Refers to paper products and materials such as old newspapers, old magazines, office papers, telephone...
- Paper ChromatographyAn analytical technique for resolution of a chemical mixture into its component compounds. Compounds are...
- Paper Manufacturing ChemicalChemical agents used in the production of paper and paper products.
- Paper ProcessorRefers to an intermediate operating facility where recovered paper products and materials are sorted, cleaned...
- Paper Processor/Plastics ProcessorIntermediate facility where recovered paper or plastic products and materials are sorted, decontaminated, and...
- Paper ProductAny item manufactured from paper or paperboard. The term paper product is used in this guideline to...
- Paper Recycling Residuals1. Secondary material generated from the recycling of paper, paperboard and corrugated containers composed...
- Paper StockTerm used in the paper recycling industry; equivalent to "recovered paper" or "waste paper."
- Paper Stock WasteTerm used in the paper recycling industry; equivalent to "recovered paper" or "waste paper."
- Paperwork Reduction ActTo reduce paperwork and enhance the economy and efficiency of the Government and the private sector by...
- Papillary MuscleConical muscular projections from the walls of the cardiac ventricles, attached to the cusps of the...
- Para-Aortic BodySmall masses of chromaffin cells found near the sympathetic ganglia along the abdominal aorta, beginning...
- parabolic dunesDunes whose shape resembles a crescent except their tips point into the wind; they often form along coasts...
- Paracrine RegulationOne of three fundamental types (with autocrine and endocrine) of cellular regulation by intercellular...
- ParakeratosisAny abnormality of the horny layer of the outer skin which prevents the formation of keratin.
- ParallelOne of a group of abstract lines on the surface of the earth formed by the latitude and longitude coordinate...
- Parallel Hybrid OperationConnects the engine and the electric motor to the wheels through mechanical coupling. Both the electric motor...
- Parallel ParlorA raised milking area or platform where the cow stands perpendicular to the operator and milking units are...
- Parallel Strand LumberComposite product formed into a billet made from layers of resinated wood veneer sheets or pieces pressed...
- Paralysis by AnalysisAct of over-thinking a problem such that a decision is not made within a necessary time frame.
- Parameter1. Constants applied to a model that are obtained by theoretical calculation or measurements taken at another...
- Parameter AttainmentThe attainment status for this Parameter for this specific Use.
- Parameter Code1. Numeric code uniquely identifying a STORET parameter. Legacy STORET parameter codes also have non-result...
- Parameter Group1. Major groups of STORET parameter codes. View the entire Parameter Group reference table...
- Parameter Grouping FunctionA function that groups parameters that represent the same pollutant and selects the parameter that best...
- Parameter IR CategoryThe EPA Integrated Report Category for the Assessment Unit ID / Parameter combination, calculated by ATTAINS.
- Parameter Name1. A parameter name is a specific state reported impairment cause. This cause is reported directly to EPA and...
- Parameter Name (Short or Long)The description associated with the parameter code. Parameters have one long name and three short names.
- Parameter State IR CategoryLabel of Organization-specific Integrated Reporting categories for the Assessment Unit / Parameter...
- Parameter StatusStatus for a Parameter, indicating whether this Parameter is a Cause, Observed Effect, or provided for...
- Parameter Uncertainty1. Uncertainties (see definition) related to parameter values.
- ParametersTerms in the model that are fixed during a model run or simulation but can be changed in different runs as a...
- ParametricStatistical methods used when the distribution of the data is known.
- Parametric DistributionA theoretical distribution defined by one or more parameters. Examples are the normal distribution, the...
- Parametric Probability DistributionA generic data type to specify an uncertain value of an ordered data type using a parametric method (i.e., a...
- Parametric Regression AnalysisType of regression analysis in which model parameters are obtained from the data begin analyzed.
- Parametric Statistical MethodStatistical method used when the distribution of the data is known.
- Parametric Variation1. When the value of a parameter itself is not a constant and includes natural variability. Consequently, the...
- ParametrizationIn climate models, this term refers to the technique of representing processes, that cannot be explicitly...
- Paranasal Sinus1. Air-filled extension of the respiratory part of the nasal cavity into the frontal, ethmoid, sphenoid, and...
- ParapodiaPaired appendages or feet found on each segment of bristle worms and other segmented marine worms.
- ParaquatA standard herbicide used to kill various types of crops, including marijuana. Causes lung damage if smoke...
- Parasite1. A plant or animal that lives on or in another species and derives its nutrition and/or protection, often...
- Parasitic Fungus1. A fungus that lives and feeds on or within another living organism and causes some degree of harm.
- Parasitic InfectionsA successful invasion of a host by an organism that uses the host for food and shelter.
- Parasitic LoadIncludes, but is not limited to, the power required to operate the equipment used for fuel delivery systems...
- Parasitic MicroorganismA microorganism that gets nutrients by living on or in an organism of another species. A complete parasite...
- Parasitic PlantPlants which get at least some of their nutrients from another living plant
- Parasitic ProtozoaProtozoa that live on or in another organism (the host), and benefit at the expense of the other...
- ParasitismA relationship where one member benefits at the expense of the well-being of the other
- ParasitologyThe study of parasites and Parasitic Diseases.
- Parasympathetic Nervous SystemThe craniosacral division of the autonomic nervous system. The cell bodies of the parasympathetic...
- ParasympathomimeticProducing effects resembling time of stimulation of the parasympathetic nerve supply to a part; called also...
- Parathyroid Gland1. One of the two small paired endocrine glands in the region of the thyroid gland. They secrete parathyroid...
- Parathyroid HormoneA polypeptide hormone (84 amino acid residues) secreted by the parathyroid glands which performs the...
- Parathyroid Hormone Receptor BindingA process that involves the non-covalent binding of parathyroid hormone to one of the parathyroid hormone...
- Parathyroid NeoplasmTumors or cancer of the Parathyroid glands.
- ParentChild’s biological or adoptive parent.
- Parent Company1. An individual, corporation, partnership, association, joint-stock company, or an unincorporated...
- Parent CorporationCorporation which directly owns at least 50 percent of the voting stock of the corporation which is the...
- Parent RockThe preexisting rock from which a metamorphic rock forms.
- Parental BehaviorActions and reactions of mother and father in relationship to offspring, such as feeding, caretaking, and...
- ParenteralNot through the alimentary canal but rather by injection through some other route, such as subcutaneous...
- ParesthesiaAn abnormal sensation, as burning or prickling
- Pareto distributionThe distribution with probability density function and distribution function...[Weisstein/MathWorld 2005a]
- Pareto efficiencyAn economic state in which it is impossible to reallocate resources to make one individual better off without...
- Pareto optimalityAn economic state in which it is impossible to reallocate resources to make one individual better off without...
- Park BenchRecreational furniture found in parks, outdoor recreational facilities, and the grounds of office buildings...
- Parking StopBarrier used to mark parking spaces and keep parked vehicles from rolling beyond a designated parking area.
- Parkinson Disease1. A progressive degenerative disorder of the central nervous system characterized by loss of dopamine...
- ParksAn ArcGIS WebService representing fine level manager or administrative agency name standardized for the...
- Parlor1. The specialized area on the dairy farm where milking is performed. Parlors come in many types: Flat Barn...
- ParoxetineA serotonin uptake inhibitor that is effective in the treatment of depression. [NLM Medical Subject Headings...
- Parshall Flume1. A device used to measure the flow in an open channel. The flume narrows to a throat of fixed dimensions...
- Part 70 Permit1. Any permit issued, renewed, or revised pursuant to part 70 of this chapter. [40 CFR 60.2 (CFR 2013)][40...
- Part 70 Permit IssuanceIf the State is the permitting authority, will occur in accordance with the requirements of part 70 of this...
- Part 70 Program1. Program approved by the Administrator under 40 CFR part 70.
- Part 70 Source1. Any source subject to the permitting requirements of 40 CFR part 70, as provided in §§ 70.3(a) and 70.3(b).
- Part 71 Permit1. Unless the context suggests otherwise, any permit or group of permits covering a part 71 source that has...
- Part 71 ProgramFederal operating permits program under this part.
- Part 71 SourceAny source subject to the permitting requirements of 40 CFR part 71, as provided in §§ 71.3(a) and 71.3(b).
- Part Marking CoatingCoatings or inks used to make identifying markings on materials, components, and/or assemblies. These...
- Parthenogenesis1. A unisexual reproduction without the fusion of a male and a female gamete (fertilization). In...
- Partial ClosureClosure of a hazardous waste management unit in accordance with the applicable closure requirements of parts...
- Partial equilibriumA partial equilibrium modeling approach accounts for market changes in the regulated sector. Market responses...
- Partial Equilibrium ModelA partial equilibrium modeling approach accounts for market changes in the regulated sector. Market responses...
- Partial Lead Service Line ReplacementReplacement of any portion of a lead service line or galvanized service line requiring replacement, as...
- Partial National Priorities List DeletionNo further cleanup response is needed for a portion of a final NPL site. The portion may be a defined...
- partial pressureThe portion of total vapor pressure in a system due to one or more constituents in the vapor mixture.
- Partial TerminationTermination of a part, but not all, of the work that has not been completed and accepted under a contract.
- Partial Wood Products EnclosureEnclosure that does not meet the design criteria for a wood products enclosure as defined in this subpart.
- Partially breast fedInfants whose source of milk comes from both human milk and other milk substitutes.
- Partially Buried TankStorage container that is partially inserted or constructed in the ground, but not entirely below grade, and...
- Partially Mixed DomainAn estuarine circulation with an intermediate level of advective and tidal energy that can disrupt the...
- Partially Mixed EstuaryAn estuary that shows a small to moderate salinity change with depth.
- Partially Soluble Hazardous Air PollutantHAP listed in Table 2 of this subpart.
- Partially-Covered FleetVehicle fleet in a covered area which contains both covered fleet vehicles and non-covered fleet vehicles...
- Partial-Open-Loop recyclingA recycling process in which a portion of the primary product type is remanufactured into the same product...
- Participant1. Individual or organization engaged in radon measurement and/or mitigation activities or in offering radon...
- Participant Cost TestCompares the benefits of participating in an efficiency program (e.g., savings on energy bills) to the costs...
- Participant ObservationA research method involving direct participation of the researcher in the events being studied. The...
- Participating Potentially Responsible PartyAny potentially responsible party who has agreed, pursuant to § 304.21 of this part, to submit one or more...
- Participation RatePortion of population participating in a recycling program.
- Participatory EvaluationAn evaluation organized as a team project in which the evaluator and representatives of one or more...
- Participatory ModelingModeling which includes all stakeholders in decision-making
- Participatory SciencePublic participation voluntarily in the scientific process, addressing real-world problems in ways that may...
- ParticleDiscrete, small piece of cellulosic material (usually wood or agricultural fiber) produced mechanically and...
- Particle Count1. The results of a microscopic examination of treated water with a special "particle counter" which...
- Particle Free Diesel ExhaustDiesel exhaust contains combustion products of compression ignition engines. The gases do not contain fine...
- Particle Induced X-ray EmissionProcedure in which a beam of particles is used to raise the electrons in a material to excited states, which...
- Particle Into Liquid Sampler-Ion ChromatographyType of ion chromatography in which the sample to be measured is formed by mixing the captured...
- Particle PollutantParticulate matter," also known as particle pollution or PM, is a complex mixture of extremely small...
- Particle Pollution1. Fine liquid or solids such as dust, smoke, fumes, or smog found in air or emissions.
- Particleboard1. Composite panel composed primarily of cellulosic materials (usually wood or agricultural fiber) generally...
- Particle-Phase ReactionReactions of suspended particles with surrounding gas molecules
- Particulate(par-TICK-you-let) A very small solid suspended in water which can vary widely in size, shape, density, and...
- particulate boundThe condition in which a pollutant constituent attaches physically, strongly or weakly, to sediments within a...
- Particulate ContainerBulk bags used to contain particulates recovered from pollution control devices
- Particulate Hazardous Air Pollutant TransferIntroduction of a particulate HAP into other dry ingredients or a liquid solution.
- Particulate LoadingThe mass of particulates per unit volume of air or water.
- Particulate Matter1. A complex mixture of extremely small particles and liquid droplets. It is made up of a number of...
- Particulate Matter 101. PM 10 is measure of particles in the atmosphere with a diameter of less than ten or equal to a nominal 10...
- Particulate Matter 10 EmissionFinely divided solid or liquid material, with an aerodynamic diameter less than or equal to a nominal ten...
- Particulate Matter 10 SamplerDevice, associated with a manual method for measuring PM 10, designed to collect PM 10 from an ambient air...
- Particulate Matter 10-2.51. Particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers and greater...
- Particulate Matter 10-2.5 SamplerSampler, or a collocated pair of samplers, associated with a manual method for measuring PM 10-2,5 and...
- Particulate Matter 10C SamplerPM 10 sampler that meets the special requirements for a PM 10C sampler that is part of a PM 10-2,5 reference...
- Particulate Matter 2.51. PM-2.5 or PM2.5 refers to smaller particles in the air (i.e., less than or equal to 2.5 micrometers in...
- Particulate Matter 2.5 Air ConcentrationParticulate matter (PM2.5) levels in air, micrograms per cubic meter (µg/m3) annual average, 2013. [EPA...
- Particulate Matter 2.5 SamplerDevice, associated with a manual method for measuring PM 2.5, designed to collect PM 2.5 from an ambient air...
- Particulate Matter by SizeX refers to the diameter at which the sampler collects 50% of the particles and rejects 50% of the particles...
- Particulate Matter Control(Control of) particles in the air, such as dust, dirt, soot, smoke, and droplets. Small particles (PM-10 or...
- Particulate Matter Control DeviceAny equipment, device, or other article that is designed and/or installed for the purpose of reducing or...
- Particulate Matter EmissionEmission of particulate matter which includes dust, soot and other tiny bits of solid materials that are...
- Particulate Matter Emission Limitation and Control MeasureNo owner or operator shall discharge or cause the discharge of particulate matter into the atmosphere in...
- Particulate Matter Emission Standard and Control MeasureNo owner or operator shall discharge or cause the discharge of particulate matter from any coal burning...
- Particulate Organic MatterRefers to that part of particulate matter composed of organic chemicals.
- Particulate Respirator MaskRespirators made to protect individuals from breathing air contaminated with harmful dusts, fogs, fumes...
- Particulate TrapFiltering device that is designed to physically trap all particulate matter above a certain size.[40 CFR...
- Particulates1. 1. Fine liquid or solid particles such as dust, smoke, mist, fumes, or smog, found in air or emissions.
- Partition Coefficient1. A constant symbolizing the ratio of the concentration of a solute in the upper of two phases in...
- partitioningChemical equilibrium condition where a chemical's concentration is apportioned between two different phases...
- Partner1. In the context of the Exchange Network, "partner" refers to an institution that is active on the Network...
- Partner/Stakeholder NeedThe science gaps and needs identified by Partners/Stakeholders during Problem Formulation.
- Partner/Stakeholder OutcomeThe expected results, Impacts, or consequence that a Partner or Stakeholder will realize due to ORD research.
- Parts Per Billion1. One ppb is comparable to one kernel of corn in a filled, 45-foot silo, 16 feet in diameter.
- Parts Per Million1. One ppm is comparable to one drop of gasoline in a tankful of gas (full-size car).
- Parts Per Million by VolumeNumber of parts of a chemical found in one million parts of a particular gas, liquid, or solid. See...
- Parts Per Trillion1. One ppt is comparable to one drop in a swimming pool covering the area of a football field 43 ft. deep.
- Parts Reclamation UnitUnit that burns coatings off parts (e.g., tools, equipment) so that the parts can be reconditioned and reused.
- Part-Time WorkerPersons who work less than 35 hours per week.
- Party1. EPA and any person who has agreed, pursuant to § 304.21 of this part, to submit one or more issues arising...
- Party to the Proceeding1. State or the Agency's Office of Enforcement.
- Party VesselVessel flying the flag of, registered in, or operating under the authority of a country that is a party to...
- PascagoulaThe coastal drainage and associated waters in Alabama and Mississippi north and east of the...
- Pascal1. The pressure or stress of one newton per square meter. 1 psi = 6895 Pa = 6.895 kN/sq m = 0.0703 kg/sq cm
- Pass through1. A discharge that exits the POTW into waters of the United States in quantities or concentrations that...
- Passenger1. Meaning given by 46 U.S.C. 2101 (21) and (21a). In the context of commercial vessels, this generally means...
- Passenger AutomobileMeaning given by the Department of Transportation at 49 CFR 523.4.
- Passenger LocomotiveLocomotive designed and constructed for the primary purpose of propelling passenger trains, and providing...
- Passenger NetworkThe U.S. Rail Network Nationwide passenger rail system.
- Passenger Vehicle1. Meaning given by the Department of Transportation at 49 CFR 523.4.
- Passenger VesselA vessel designed for the commercial transport of passengers.
- Passenger VolumeThis is the sum of the front and rear seat passenger volumes, if applicable. If the carline contains more...
- Passivation1. Forms a protective coating on metals, particularly stainless steel, by immersing the part in an acid...
- Passive AttackAn actual assault perpetrated by an intentional threat source that attempts to learn or make use of...
- Passive Collection SystemGas collection system that solely uses positive pressure within the landfill to move the gas rather than...
- Passive Continental MarginThe transition between oceanic and continental crust that is not an active plate margin. This feature was...
- Passive coolingCooling buildings without the use of mechanical equipment, by using natural ventilation.
- Passive ImmunityImmunity conferred by an antibody produced in another host and acquired naturally by an infant from its...
- Passive Institutional Control1. Permanent markers placed at a disposal site, (2) public records and archives, (3) government ownership and...
- Passive MarginContinental margin located in the middle of a lithospheric plate where tectonic activity is minimal; also...
- Passive MeasureRisk management measures that use design features that reduce either the frequency or consequence of the...
- Passive MitigationEquipment, devices, or technologies that function without human, mechanical, or other energy input.
- Passive Public Health SurveillanceSurveillance in which data are sent to the health agency without prompting.
- Passive radon/radon decay product measurement deviceA radon or radon decay product measurement system in which the sampling device, detector, and measurement...
- Passive Radon-Reduction SystemShort for "passive sub-slab depressurization system". Approach for reduction of radon levels which utilizes...
- Passive SamplerPassive sampling is based upon distribution of solutes between the sampled medium, e.g. a water body, and a...
- Passive SmokingInhalation of others' tobacco smoke.
- Passive solar heating1. Designing a home's windows, walls, and floors to collect, store, and distribute solar energy in the form...
- Passive System1. Short for passive sub-slab depressurization system. Features to reduce radon levels by utilizing barriers...
- Passive Treatment WallTechnology in which a chemical reaction takes place when contaminated ground water comes in contact with a...
- Passive Treatment WallsTechnology in which a chemical reaction takes place when contaminated ground water comes in contact with a...
- Passive VentPipe or a system of pipes that allows landfill gas to flow naturally, without the use of a fan or similar...
- Pass/Lagoon ChannelA generally narrow passage way, open on both ends, through a shoal. In coral reef settings this feature...
- Past Climate RecordEvidence of past climates and how those climates changed over time
- Paste Mixing FacilityFacility including lead oxide storage, conveying, weighing, metering, and charging operations; paste...
- Paste Production Plant1. Processes whereby calcined petroleum coke, coal tar pitch (hard or liquid), and/or other materials are...
- Pastoral SocietyA social system based upon breeding and herding domestic animals for food and transportation.
- Pasture1. Land used primarily for the production of domesticated forage plants for livestock (in contrast to...
- Pastureland1. Land cover/use category of land managed primarily for the production of introduced forage plants for...
- Pasture/Range/Paddock(Land where) manure from pasture and range grazing animals is allowed to lie as deposited, and is not managed.
- Patch Coral ReefIndividual patch coral reefs are coral formations with circular or oblong shapes and vertical reliefs of one...
- Patch cutting methodA silvicultural system in which all merchantable trees are harvested over a specified area at one time.
- Patch DynamicsThe change in the distribution of habitat patches in a landscape generated by patterns of disturbance and...
- Patch Mollusk ReefMounded, generally round or lobate reefs that have some vertical relief above the surrounding substrate...
- Patchy NecrosisA disease of corals. Colonies with this condition have small (2-10 cm diameter) circular to irregular patches...
- patentConcerning the ownership of a mining claim: as a noun, A document that conveys title to the ground; or the...
- Patent RightA right, granted by a government, which allows the patent holder to exclude others from making, using, or...
- Pathogen1. A bacterial organism typically found in the intestinal tracts of mammals, capable of producing disease.
- Pathogen Concentration TechnologyTechology such as portable continuous-flow centrifuge (PCFC) used to concentrate protozoa from large volumes...
- Pathogen DetectionProcess of finding a disease-causing micro-organism.
- Pathogen Indicators Pollutant CategoryAll parameters for total coliform, streptococci, and enteric. The Pathogen pollutant category query in EZ...
- pathogenesis1. The pathologic, physiologic, or biochemical mechanism resulting in the development of a disease or morbid...
- Pathogenic1. Causing disease; commonly applied to microorganisms that cause infectious diseases.
- Pathogenic Bacteria and VirusesBacteria and viruses capable of causing disease in humans.
- Pathogenic FungusFungus which causes disease in humans and other organisms
- Pathogenic Microorganism1. Microorganisms that can cause disease in other organisms or in humans, animals and plants. They may be...
- Pathogenic OrganismDisease-causing organisms. These include, but are not limited to, certain bacteria, protozoa, viruses, and...
- Pathogenic Organisms(path-o-JEN-ick) Organisms, including bacteria, viruses or cysts, capable of causing diseases (typhoid...
- Pathogenicity1. The proportion of persons infected, after exposure to a causative agent, who then develops clinical...
- Pathogens1. Disease-causing organisms, such as some bacteria, viruses, or protozoa.
- Pathologic MutagenesisAny event, process, or activity that produces a deleterious alteration of DNA. (NCI)
- Pathologic ProcessA biologic function or a process having an abnormal or deleterious effect at the subcellular, cellular...
- Pathological WasteWaste material consisting of only human or animal remains, anatomical parts, and/or tissue, the...
- PathologyThe study of disease.
- Pathway1. The physical course a chemical or pollutant takes from its source to the exposed organism.
- Pathway AnalysisThe exploration of the relationship between different forms or phases of a pollutant.
- Pathway of Exposure1. The physical course a pesticide takes from the source to the organism exposed (e.g., through food or...
- pathway specific riskThe risk associated with exposure to a chemical agent or a mixture of chemicals via a specific pathway (e.g...
- PatientIndividuals participating in the health care system for the purpose of receiving therapeutic, diagnostic, or...
- PatternIn EMAP, the location, distribution, and composition of structural landscape components within a particular...
- Pattern Diversityas change between parts of the internal pattern of a community.
- PatulinPatulin is a mycotoxin that is produced by certain species of Penicillium, Aspergillus and Byssochylamys...
- Paulownia tomentosaPrincess tree, also known as royal paulownia or empress tree, is a small to medium sized tree that may reach...
- PavementA bare rock surface that provides a protective rock cover over the material beneath it.
- Pavement AreaFlat (or gently sloping), low-relief, solid, carbonate rock with little or no fine-scale rugosity. These...
- PayOre or a natural situation that yields metal and/or gold in profitable amounts.
- Pay-As-You-ThrowSystems under which residents pay for municipal waste management and disposal services by weight or volume...
- PaymentAction taken by EPA to increase the amount of funds available for cash draw through the ACH. A payment is not...
- Payment BondFor purposes of TSDF financial assurance, a type of surety bond that will fund a standby trust fund in the...
- Payment for Ecosystem Services1. The variety of arrangements through which the beneficiaries of ecosystem services pay back the...
- PaymentsPayments include disbursements of federal funds, via a variety of mechanisms, to federal and private...
- payments for ecosystem servicesThe variety of arrangements through which the beneficiaries of ecosystem services pay back the...
- PBT ProfilerWeb-based screening-level tool used in the absence of data to help identify chemicals that may potentially...
- PCB in PCB ItemsDefined in § 761.3. For any purposes under this part, inadvertently generated non-Aroclor PCBs are defined as...
- PCB Waste Commercial StorerOwner or operator of each facility that is subject to the PCB storage unit standards of § 761.65(b)(1) or...
- PCB Waste DisposerAs the term is used in subparts J and K of this part, means any person who owns or operates a facility...
- PCBsPCBs, or polychlorinated biphenyls, are a group of man-made organic chemicals with a range of toxicity...
- PCE Gas AnalyzerFlame ionization detector, photoionization detector, or infrared analyzer capable of detecting vapor...
- PCM-equivalentThis refers to chrysotile and amphibole structures identified through transmission electron microscopy (TEM)...
- PCR Negative ControlVerify that no contaminating nucleic acid has been introduced into the master mix.
- PCR Positive ControlVerify that the PCR master mix and reagents were prepared correctly to produce amplification of the target...
- Pea ProcessingProcessing of peas into the following product styles: Canned and frozen, all varieties and sizes, whole.
- Peace-Tampa BayThe coastal drainage and associated waters from the Caloosahatchee River Basin boundary to and including the...
- Peach ProcessingProcessing of peaches into the following product styles: Canned or frozen, all varieties, peeled, pitted and...
- Peak Demand1. The highest point of total water usage experienced by a system, measured on an hourly and on a daily basis.
- Peak Egg ProductionThe point in a hen's laying cycle where she will lay the highest percentage of eggs.
- Peak Electricity DemandThe maximum electricity used to meet the cooling load of a building or buildings in a given area.
- Peak Flow1. Maximum instantaneous streamflow during periods of high water runoff.
- Peak LevelsLevels of airborne pollutant contaminants much higher than average or occurring for short periods of time in...
- Peak Load100 percent of the manufacturer's design capacity of the gas turbine at ISO standard day conditions.
- Peak RunoffThe highest value of the stage or discharge attained by a flood or storm event; also referred to as flood...
- Peak Water DemandHighest point of total water usage experienced by a system, measured on an hourly and on a daily basis.
- Peak-and-Shape ParameterA model parameter that strongly influences the peak, rising, and receding legs of a runoff hydro graph.
- Peaking PlantPlants (often combustion turbines with low capital cost and high or very high fuel costs) used sparingly...
- Peaking Unit1. A unit that has:(i) An average capacity factor of no more than 10.0 percent during the previous three...
- Pear ProcessingProcessing of pears into the following product styles: Canned, peeled, halved, sliced, diced, and any other...
- PearlThe Pearl River Basin. Louisiana, Mississippi. Area = 8730 sq.mi.
- Pearson Product-Moment Correlation CoefficientA measure of association; a statistic used with interval-ratio variables.
- Peat1. Partially decomposed organic material.
- PeckingAction of the beak of birds used for picking up food or poking
- PedicelStalk of an individual flower or fruit.
- PedimentA sloping bedrock surface at the base of a mountain, formed when erosion removes much of the mountain's mass.
- PeduncleThe stalk of a flower or of a flower cluster.
- Pee DeeThe coastal drainage and associated waters from the Cape Fear River Basin boundary to the Santee River Basin...
- Peel-Apart Film ArticleSelf-developing photographic film article consisting of a positive image receiving sheet, a light sensitive...
- Peer Review1. A rigorous, formal, and documented evaluation process using objective criteria and qualified and...
- Peer Review & Scientific Advisory FunctionsPeer Review and Scientific Advisory Functions involves all activities to subject original technical or...
- Peer-Reviewed Journal1. A peer-reviewed (or refereed) journal uses a formal approval process for acceptance of articles. An editor...
- Peer-Reviewed LiteratureA peer-reviewed (or refereed) journal uses a formal approval process for acceptance of articles. An editor...
- Peer-Reviewed PublicationThe full text document, and any associated supplementary text materials, posted or published by a peer-review...
- PelagicThe open ocean, excluding the ocean bottom and shore.
- Pelagic ZoneThe open ocean, excluding the ocean bottom and shore.
- Pellet FuelGenerally refers to waste biomass which is compressed and made into pellets to be burned in pellet fuel...
- Pellet StoveStove that burns compressed wood or biomass pellets to produces a constant flame that requires little to no...
- Pelleting OperationAll operations that make pelleted animal feed, including but not limited to, steam conditioning, die-casting...
- Pelvic Floor MuscleMuscles extending from inside the pubic bone to the anus that help indirectly to control the urethral...
- Pelvis1. The basin-like area outlined by the hip bones and the vertebral column (SPINE).
- PenMost swine are grouped together in pens, whether kept in a shelter or in a fenced open lot. The number of...
- Pen MatingBoar is placed in a pen with group of sows to allow for breeding.
- PendingThis designation indicates those substitutes which the Agency is currently reviewing, but for which a final...
- Pending Diagnostic Trouble CodeDiagnostic trouble code stored upon the detection of a potential malfunction.
- Pendulous UdderA loosely attached udder.
- Penicillic Acid ProductionThe making of Penicillic acid by Aspergillus and Penicillium fungi
- PenicilliumA mitosporic Trichocomaceae fungal genus that develops fruiting organs resembling a broom. When identified...
- Penicillium chrysogenumA mitosporic fungal species used in the production of penicillin.
- Penicillium CommuneP. commune, is a cause of cheese spoilage around the world.
- Penicillium oxalicumA plant pathogen, infecting corn.
- Penicillium roquerfortiA fungus used in the production of cheese
- Penis1. The male organ of urination and copulation.
- Pennisetum setaceumFountain grass is an attractive perennial grass with a densely clumped growth form and erect stems that grow...
- PenobscotThe Penobscot River Basin. Maine. Area = 8610 sq.mi.
- PenstockClosed conduit or pipe for conducting water to the powerhouse.
- PentachlorophenolPlease see the ATSDR fact sheet for Pentachlorophenol.
- PentaneAn organic compound with the formula C5H12.
- Pentane Blending FacilityA fuel manufacturing facility where pentane is blended into PCG.
- Pentanes plus1. A mixture of hydrocarbons, mostly pentanes and heavier fractions, extracted from natural gas.
- Pentose Phosphate CycleThe pentose phosphate pathway is a process of glucose turnover that produces NADPH as reducing equivalents...
- Peptide Hormone MetabolismSum of chemical changes that occur within the tissues of an organism consisting of anabolism (biosynthesis)...
- Peptide HormonesHormones synthesized from amino acids. They are distinguished from intercellular signaling peptides and...
- Peptide HydrolasesHydrolases that specifically cleave the peptide bonds found in proteins and peptides. Examples of...
- Peptide MetabolismPeptide Metabolism involves cellular biotransforming chemical modifications of peptides.
- Peptides1. Any compound consisting of two or more amino acids, the building blocks of proteins. Peptides are combined...
- PeptidoglycanConstituent of the bacterial cell wall composed of sugars and amino acid polymers
- PERThis indicates that the limitation value is a percent reduction in pollutant loading.
- Per- and Polyfluoroalkyl Substances Pollutant CategoryPollutant loadings associated with individual parameters in ICIS-NPDES, which are identified as PFAS by the...
- Per capita intake rateThe average quantity of food consumed per person in a population composed of both individuals who ate the...
- Per DiemThe allowance for lodging (excluding taxes), meals and incidental expenses for each day.
- Per-and Polyfluoroalkyl Substances1. Group of man-made chemicals that includes PFOA, PFOS, GenX, and many other chemicals. PFAS have been...
- Per-Capita Residential UseResidential use divided by the total population served.
- Per-Capita UseTotal use divided by the total population served.
- Percent in limited English speakingPercent of households in which no one age 14 and over speaks English "very well" or speaks English only (as a...
- Percent less than high school educationPercent of individuals age 25 and over with less than high school degree.
- Percent low-incomePercent of individuals whose ratio of household income to poverty level in the past 12 months was less than 2...
- Percent Monitor Data AvailabilityFor purposes of § 97.43 (a)(1) and § 97.84(b), total unit operating hours for which quality-assured data were...
- Percent over age 64Percent of individuals over age 64 as a fraction of the population.
- Percent people of colorThe percent of individuals in a block group who list their racial status as a race other than white alone...
- Percent Relative Standard Deviation1. The standard deviation expressed as a percentage of the mean (i.e., the coefficient of variation)...
- Percent Saturation1. The amount of a substance that is dissolved in a solution compared with the amount that could be dissolved...
- Percent under age 5Percent of individuals under age 5 as a fraction of population.
- Percent Watershed Impervious AreaDataset represents the percent of total land within each subwatershed (12-digit HUC) that is impervious for...
- Percent Watershed Natural Land CoverDataset represents the percent of total land within each subwatershed (12-digit HUC) that has natural land...
- Percentage frequency effectThe percent difference in resistivity measured at two frequencies (one high, one low). It is the basic...
- PERCENTAGE OF COMPLETION METHODA system under which payments are made for construction work according to the percentage of completion of the...
- Percentage ReductionThe percentage by which the emissions of a source are reduced by a control measure when the control...
- Percentile1. Any one of the points dividing a distribution of values into parts, each of which contains 1/100 of the...
- Perceptible Leak1. Any petroleum solvent vapor or liquid leaks that are conspicuous from visual observation or that bubble...
- PerceptionAwareness of the effects of stimuli.
- perched aquifer1. A lens of saturated soil above the main water table that forms on top of an isolated geologic layer of low...
- perched dunesDunes resting on a plateau of glacial sediment.
- perched meadowsGrassy areas found in carved out areas of bedrock along with seasonal pools of water.
- Perched Water1. A zone of unpressurized water held above the water table by impermeable rock or sediment.
- PerchloratesPerchlorates are colorless salts that have no odor. There are five perchlorate salts that are manufactured in...
- PerchloroethyleneA chlorinated hydrocarbon used as an industrial solvent and cooling liquid in electrical transformers. It is...
- Perchloroethylene ConsumptionTotal volume of perchloroethylene purchased based upon purchase receipts or other reliable measures.
- Percolating Water1. (PURR-co-LAY-ting) Water that passes through soil or rocks under the force of gravity.
- Percolation1. 1. The movement of water downward and radially through subsurface soil layers, usually continuing downward...
- percussion hammerA hydraulic or pneumatic hammer, much like a jackhammer, that is used to pound DP rods into the ground...
- PerennialPlants that live for more than two growing seasons. Perennial plants either die back after each season...
- Perennial Plant1. A plant which lives for more than two years.
- Perennial stream1. A stream that runs continuously throughout the year.
- Perennial streamsFlowing throughout the year.
- Perennial Water BodyContains water throughout the year under normal conditions. Under extreme conditions (e.g., severe drought)...
- Perfect bindA type of binding that glues the edge of sheets to a wraparound cover.
- Perfect Information1. The state of information where there is no uncertainty. The current and future values for all parameters...
- Perfected ClaimThe point at which EPA determines that the written demand for a sum certain (i.e., claim) has the...
- Perfluorinated Alkyl Acids and SaltsA fully fluorinated or perfluorinated chemical is one in which all the carbon-hydrogen bonds in a chain have...
- Perfluorinated Chemical1. A fully fluorinated or perfluorinated chemical is one in which all the carbon-hydrogen bonds in a chain...
- Perfluorinated Chemical ExposureExposure to perfluorinated chemicals such as perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate...
- Perfluorinated Chemical ReleaseRelease of a PFC which is one of a large group of manufactured compounds that are widely used to make...
- Perfluoroalkyl CarboxylateGroup of saturated carbon atoms covalently bonded to each other in a linear, branched, or cyclic array and...
- Perfluoroalkyl SulfonateGroup of saturated carbon atoms covalently bonded to each other in a linear, branched, or cyclic array and...
- Perfluorobutane Sulfonic AcidReplacement chemical for PFOS, a chemical that was voluntarily phased out by its U.S. manufacturers. PFBS has...
- PerfluorocarbonA compound consisting of carbon and fluorine. Perfluorocarbons (PFCs) have extremely high global warming...
- Perfluorocarbons1. Potent greenhouse gases that accumulate in the atmosphere and remain there for thousands of years...
- Perfluorooctane Sulfonic Acid Based Fume SuppressantFume suppressant that contains 1 percent or greater PFOS by weight.
- Perfluorooctanoic AcidA fully fluorinated or perfluorinated chemical is one in which all the carbon-hydrogen bonds in a chain have...
- Perfluorooctyl SulfonateA fully fluorinated or perfluorinated chemical is one in which all the carbon-hydrogen bonds in a chain have...
- Perform Core Internal Financial ManagementActivities to operate and maintain the core system consistent with established financial and related laws...
- Perform Grants Financial ManagementActivities to manage the grant process, including the operation and maintenance of the grants financial...
- Perform IAG & Contracts Financial ManagementActivities to operate and maintain the contracts and IAG financial management system consistent with...
- Perform Personnel ActionsActivities to submit, receive, accept and perform the requests for actions that officially change the status...
- Perform RemovalsActivities to prevent, reduce, or mitigate threats to humans posed by releases or potential releases of...
- Performance Assessment1. Analysis that: (1) Identifies the processes and events that might affect the disposal system; (2) examines...
- Performance Assessment Rating ToolA review of a program to helps identify the program's strengths and weaknesses to inform funding and...
- Performance Based Measurement SystemA set of processes wherein the data quality needs, mandates, or limitations of a program or project are...
- Performance Bond1. Cash or securities deposited before a landfill operating permit is issued, which are held to ensure that...
- Performance Criteria1. Address the adequacy of information that is to be collected for the project. These criteria often apply to...
- Performance Data (For Incinerators)Information collected, during a trial burn, on concentrations of designated organic compounds and pollutants...
- Performance Evaluation1. An evaluation that compares actual performance with that planned in terms of both resource utilization and...
- Performance Evaluation Sample1. A reference sample provided to a laboratory for the purpose of demonstrating that the laboratory can...
- Performance Evaluation Sample (regulatory)A reference sample provided to a laboratory for the purpose of demonstrating that the laboratory can...
- Performance GoalA target level of performance expressed as a tangible, measurable objective, against which actual achievement...
- Performance GoalsPerformance measures with targets and time frames. Goals should be outcome-oriented and targets should be...
- Performance Improvement LifecycleA three-phase process agencies can use to close performance gaps and improve the overall performance of the...
- Performance IndicatorThe parameter or parameters you measure or observe for demonstrating proper operation of the pollution...
- Performance MeasureWays to objectively measure the degree of success a program has had in achieving its stated objectives...
- Performance MeasurementThe ongoing monitoring and reporting of program accomplishments, particularly progress toward pre-established...
- Performance MeasurementsActual results generated by the implementation of enhanced business and information management solutions...
- Performance ModelAnalytical tool (or a method) validated using corrected flight test data that can be used to determine the...
- Performance or Acceptance CriteriaStatements of the type and content of deliverables and results that are necessary to assess the usability of...
- Performance Partnership GrantEPA provides financial assistance to states, tribes and territories to help them develop and implement...
- Performance RequirementA requirement that imposes conditions on a functional requirement (e.g., a requirement that specifies the...
- performance standard1. Standard of performance proposed or promulgated under this part.
- Performance Standards1. Regulatory requirements limiting the concentrations of designated organic compounds, particulate matter...
- Performance TestThe collection of data resulting from the execution of a test method (usually three emission test runs) used...
- Performance Test Combustion TemperatureArithmetic mean of the average combustion temperature in the hottest zone of the furnace for each of the runs...
- Performance TestingCollection of data resulting from the execution of a test method used (either by stack testing or fuel...
- Performance Track Member FacilityFacility that has been accepted by EPA for membership in the National Environmental Performance Track Program...
- Performance Warranty1. Warranty given pursuant to this subpart and 42 U.S.C.
- Performance Work StatementA type of statement of work that is used in performance-based contract acquisitions. The PWS describes the...
- Performance-Based Management ProgramA program designed to preserve and protect public health and water quality by seeking to ensure sustained...
- Performance-Based Pollution Control StandardA pollution control standard that requires polluters to meet a source-level emission standard without...
- Performance-Based Standard1. Standards expressed in terms of a desired result or outcome rather than a method, process, or technology.
- performance-based standardsStandards expressed in terms of a desired result or outcome rather than a method, process, or technology. See...
- Perfringens Food PoisoningThe common foodborne illness caused by C. perfringens. A more serious but rare illness is also caused by...
- PerfumeA substance, extract, or preparation for diffusing or imparting an agreeable or attractive smell, especially...
- PerfusionLiquid poured over or through an organ or tissue
- PerianthThe floral envelopes; collectively, the calyx and corolla, especially when they are alike.
- Pericardium1. The fibroserous sac surrounding the heart and the roots of the great vessels.
- PericarpThe fruit wall which develops from the mature ovary wall. (FDA)
- Perimeter Assist AirPortion of assist air introduced at the perimeter of the flare tip or above the flare tip. Perimeter assist...
- Perimeter DitchDitch or channel used to convey runoff from within a mining area around the outside perimeter of the mining...
- PerineumThe area located between the anus and vulva in females, and anus and scrotum in males.
- Period emission tableUsed in NIF 3.0 for 2002 and 2005 NEI submittals.
- Periodic Certification Statement1. Written submission to the appropriate permitting authority (the local control authority (the POTW) or...
- Periodic compliance reportA report on compliance status submitted by CIUs and significant non-CIUs to the POTW at least semiannually...
- Periodic Monitoring1. Monitoring and record keeping are key elements for ensuring that permits are enforceable as a practical...
- Periodic Ocean CurrentA current due to the effect of the tides; may be rotating rather than having a simple back and forth motion.
- Periodic ReportA report on compliance status submitted by CIUs and significant non-CIUs to the POTW at least semiannually...
- Periodical DischargeDischarges that are intermittent and associated with routine operations, maintenance activities, startups...
- Periodical Gas Stream DischargeGas stream discharges that are intermittent for which the total organic HAP concentration is greater than 20...
- Peripheral Nervous System1. The nervous system outside of the brain and spinal cord. The peripheral nervous system has autonomic and...
- Peripheral Nervous System ProcessProcesses of that part of the nervous system consisting of the nerves and neurons that reside or extend...
- Periphyton1. Microscopic underwater plants and animals that are firmly attached to solid surfaces such as rocks, logs...
- Periplasmic SpaceThe space between the inner and outer membranes of a cell that is shared with the cell wall.
- peristaltic pumpA type of suction-lift pump that creates a vacuum by turning a rotating head against flexible tubing...
- PeritheciaA small fruiting body in certain fungi, containing ascospores.
- Perlite Composite BoardInsulation board composed of expanded perlite and fibers formed into rigid, flat, rectangular units with a...
- Permafrost1. Soil or rock that is frozen year-round. Permafrost can be found in many parts of Alaska, northern Canada...
- Permanent Diagnostic Trouble CodeDTC that corresponds to a MIL-on DTC and is stored in non-volatile random access memory (NVRAM). A permanent...
- Permanent OpeningOpening designed into an enclosure to allow tire components to pass through the enclosure by conveyor or...
- Permanent Radon BarrierFinal radon barrier constructed to achieve compliance with, including attainment of, the limit on releases of...
- PERMANENT RECORDSRecords appraised by NARA as having sufficient historical or other value to warrant continued preservation by...
- Permanent Storage CapacityGrain storage capacity which is inside a building, bin, or silo.
- Permanent Total Enclosure1. Permanently installed enclosure that completely surrounds a source of emissions such that all emissions...
- Permanently Closed ContainerAny container or facility for which:(1) All liquid and sludge has been removed from each container and...
2,732 of 30,736 terms in Environment terminology (MLC-0121). Request the full dataset.