Characteristic (or Hazardous Waste Characteristic): Any one of the four categories used in defining hazardous waste: ignitability, corrosivity, reactivity, and toxicity.
Characteristic of a substance or mixture presenting environmental danger or destruction. Specifically, a substance is ecotoxic if it harms a particular ecosystem. For example, certain pesticides such as DDT are ecotoxic to water systems.
Characteristic Curve: a) A curve to show the relation between two changing values b) Refers to one of a pair of conjugate curves in a surface, ...
characteristic shape.
agrochemical. Synthetic chemicals (pesticide and fertilizers)
used in agricultural production.
Characteristics (e.g., race, sex, age, obesity) or variables (e.g., smoking, occupational expo- sure level) associated with increased probability of a toxic effect.
Risk for Non-Endangered Species ...
A characteristic of an ecosystem that is related to, or derived from, a measure of biotic or abiotic variable, that can provide quantitative information on ecological structure and function.
A characteristic which occurs mostly on proof coins as a result of a piece of lint on the die or planchet during the striking process. This lint creates an incused scratch-like mark on the coin.
A characteristic of acidic and basic hazardous wastes.
The characteristic is defined by a waste's pH and its ability to corrode steel. A waste is corrosive if it has a pH less than or equal to 2.0 or greater than or equal to 12.5.
The characteristics of the farm sector; most often used in describing changes in the number, size distribution, production traits, and business composition (i.e. type of ownership) of farms and agribusiness firms.
Definition source ...
The characteristics factoring into coin grade, such as bag marks, luster, strike quality, and "eye appeal".
AU (About Uncirculated)
The grade of a coin having very minimal wear, just one step below Uncirculated.
The characteristics, processes or reactions of a soil that are caused by physical forces, and are described by, or expressed in physical terms or equations.
The characteristic of a material which prevents the infiltration or passage of liquid through it. This may apply to roads, streets, parking lots, rooftops and sidewalks.
IMPERVIOUS COVER ...
Risk Factor- Characteristics (e.g., race, sex, age, obesity) or variables (e.g., smoking, occupational exposure level) associated with increased probability of a toxic effect.
Site and soil characteristics, combined with disturbances (human or natural) act to control the plant survival, health, density, and growth.
Origins and Characteristics of Stratospheric and Ground-Level Ozone ...
Hardness: characteristic of water which describes the presence of dissolved minerals.
variable Any characteristic or attribute that can be measured.
variable charge The portion of a water bill that varies with water usage; also known as a commodity charge.
Impermeable: Characteristic of geologic materials that limit their ability to transmit significant quantities of water under the head differences normally found in the subsurface environment.
Monitor: To track a characteristic, such as dissolved oxygen, nitrate level, or fish population, over a period of time using uniform methods to evaluate change.
Possesses at least one of four characteristics (ignitability, corrosivity, reactivity, or toxicity), or appears on special EPA lists.
Horizon, soil - a layer of soil, approximately parallel to the surface, having distinct characteristics produced by soil-forming
processes. In the identification of soil horizons, an uppercase letter represents the major horizons.
The prefix 'ab-' emphasizes that the heritable characteristics of an organism are consequences of the past and not anticipation of the present or future.
A characteristic of water caused mainly by the salts of calcium and magnesium, such as bicarbonate, carbonate, sulfate, chloride and nitrate.
airmass A widespread body of in the atmosphere that gains certain meteorological or polluted characteristics while set in one location. The characteristics can change as it moves away.
Mie Scattering - Processes by which particles of similar size and electrical characteristics separate or disperse different wavelengths (read colors) of light. First described by Gustav Mie in 1808.
reach a large subdivision of a stream determined by a fairly uniform set of valley, channel, and land use characteristics. Each reach is composed of many smaller individual habitat units.
recharge when water enters the ground-water stores.
Endpoint: An endpoint (or indicator/target) is a characteristic of an ecosystem that may be affected by exposure to a stressor. Assessment endpoints and measurement endpoints are two distinct types of endpoints commonly used by resource managers.
GAC See granular activated carbon adsorption geological log A detailed description of all underground features discovered during the drilling of a well, including types of formations encountered and their physical characteristics.
Radiation has different characteristics depending upon the wavelength. Because the radiation from the Sun is relatively energetic, it has a short wavelength (ultra-violet, visible, and near infra-red).
Research design used to test etiological hypotheses in which inferences about exposure to the putative causal factor(s) are derived from data relating to characteristics of the persons or organisms under study or to events or experiences in their ...
Some of these products are used because of their evaporating or 'quick-drying' characteristics. Most VOCs are carbon-hydrogen compounds (hydrocarbons) but they also include aldehydes and ketones.
Permit-Required Confined Space (Permit Space): A confined space that has one or more of the following characteristics: Contains or has a potential to contain a hazardous atmosphere (e.g.
EPA hazardous waste characteristic defined with a rigorous test procedure, the TCLP (for Toxicity Characteristic Leaching Procedure). In the procedure, a waste is extracted for 24 hours with an acetic acid solution.
This includes substances on the EU Hazardous Waste List and a has one of more of the following hazardous characteristics: explosive, oxidising, highly flammable, flammable, irritant, harmful, toxic, carcinogenic, corrosive, infectious, teratogenic, ...
Measure of Effect/ Measurement Endpoint- A measurable characteristic of ecological entity that can be related to an assessment endpoint; e.g.
Climate change: The slow variations of climatic characteristics over time at a given place.
In biology, any biological entity or processes, or community whose characteristics show the presence of specific environmental conditions. 2.
The air surrounding the Earth, described as a series of layers of different characteristics.
The Lacustrine System includes wetlands and deepwater habitats with all of the following characteristics: (1) situated in a topographic depression or a dammed river channel; (2) lacking trees, shrubs, persistent emergent plants, ...
Adaptation: a genetically determined characteristic that enhances the ability of an organism to cope with its environment; any alteration or response of an organism that favors survival in a changed environment.
Aerenchyma: air-space tissue ...
Registration The procedure by which an organization indicates relevant characteristics of a product, process or service, or particulars of an organization or person, and then includes or registers the product, process, ...
Characteristic of information (e.g. stock abundance index) or an activity (e.g. research vessel survey) obtained or undertaken independently of the activity of the fishing sector. Intended to avoid the biases inherent to fishery-related data.
Some familiar characteristics of the weather include wind, temperature, humidity, atmospheric pressure, cloudiness, and precipitation. Weather can change from hour to hour, day to day, and season to season.
Degraded water. Water within the groundwater basin that, in one characteristic or another, does not meet primary drinking water standards.
Any biological entity or process, or community whose characteristics show the presence of specific environmental conditions or pollutants.
Indicator organisms ...
Water quality: The chemical, physical, and biological characteristics of water with respect to its suitability for a particular use.
Abiota - Those non-living factors which are present in and affect the characteristics of a given ecosystem.
Hydrogen Sulfide (H2S): A colorless, flammable, poisonous compound having a characteristic rotten-egg odor. It is used in industrial processes and may be emitted into the air.
I ...
Population
A group or number of people living within a specified area or sharing similar characteristics (such as occupation or age).
Air pollution is a broad term applied to all physical (particulate matter), chemical, and biological agents that modify the natural characteristics of the atmosphere.
population - (1) the whole number of inhabitants in a country, region or area; (2) a set of individuals having a quality or characteristic in common.
Qualitative water assessment Analyses of water used to describe the visible or aesthetic characteristics of water.
Infiltration - Infiltration is the process of water entering the soil. Often of concern is the infiltration rate - the rate at which water enters soil. This will be dependent on characteristics of the soil and use, vegetative cover, ...
The rate of infiltration is influenced by the physical characteristics of the soil, soil cover (i.e. plants), water content of the soil, soil temperature, and rainfall intensity. The terms infiltration and percolation are often used interchangeably.
Hazard which may be generally present throughout an operation or industry, but which may have widely different levels of risk, depending on specific site characteristics.
Hazard ...
Addiction-To function normally, the body relies on a substance and there is a physical dependency on the substance as well. If that substance is taken away, it causes withdrawal, that is accompanied by a characteristic set of signs and symptoms.
The term, "criteria pollutants" derives from the requirement that EPA must describe the characteristics and potential health and welfare effects of these pollutants. It is on the basis of these criteria that standards are set or revised.
Its hygroscopic (absorbs water) characteristic makes it very difficult to transport through existing fuel pipelines. It can only be used in engines that are specially equipped to handle it (Source: City of Austin, TX) ...
 See also: Water, Condition, Soil, Environment, Air
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