Exposure Level (chemical): The amount (concentration) of a chemical at the absorptive surfaces of an organism.
Exposure level at which there are no statistically or biological significant differences in the frequency or severity of any effect in the exposed or control populations.
Noble Metal
Chemically inactive metal such as gold; does not corrode easily.
Reference Exposure Level (REL): A term used in risk assessment. It is the concentration at or below which no adverse health effects are anticipated for a specified exposure period.
The dose or exposure level below which a significant adverse effect is not expected.
Tillage
Plowing, seedbed preparation, and cultivation practices.
recommended exposure level (REL) (in toxicology)
Highest allowable regulatory airborne concentration.
Note: This exposure concentration is not expected to injure workers. It may be expressed as a ceiling limit or as a time-weighted average (TWA).
No Observable Adverse Effect Level (NOAEL) An exposure level at which there are no statistically or biologically significant increases in the frequency or severity of adverse effects between the exposed population and its appropriate control; ...
Reference dose (RfD)-An exposure level defined by the Environmental Protection Agency as "a numerical estimate of a daily oral exposure to the human population, including sensitive subgroups such as children, ...
Threshold- The dose or exposure level below which a significant adverse effect is not expected.
Threshold Level- Time-weighted average pollutant concentration values, exposure beyond which is likely to adversely affect human health.
The relationship between exposure level and the incidence of adverse effects.
Source: Terms of the Environment
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Maximum Exposure Range: Estimate of exposure or dose level received by an individual in a defined population that is greater than the 98th percentile dose for all individuals in that population, but less than the exposure level received by the ...
Public health exposure level set by the National Institute for Occupational Safety and Health for worker safety. It is the level above which a worker should not be exposed for the course of an eight-hour day, due to possible adverse health effects.
RFD (Reference dose). The daily exposure level, during an entire lifetime of a human, which appears to be without appreciable risk on the basis of all facts known at the time. Same as ADI.
Dose
In terms of monitoring exposure levels, the amount of a toxic substance taken into the body over a given period of time. ...
Risk factor
Characteristic (e.g., race, sex, age, obesity) or variable (e.g., smoking, occupational exposure level) associated with increased probability of a toxic effect.(1)
Siting
The process of choosing a location for a facility.(1) ...
monitoring: Monitoring is the act of using instruments to look for radiation and is also the measurement of radiation exposure levels or radionuclide quantities.
Chemical Hygiene Plan: A written program that includes specific work practices, standard operating procedures, equipment, engineering controls and policies to ensure that employees are protected from hazardous exposure levels to all potentially ...
into any structural or decorative material, or any other chemical, biologic, or physical agent in the home environment or its immediate surroundings, which constitutes a potential hazard to human health at acute or chronic exposure levels.
 See also: Exposure, Hazard, Environment, Environmental, Water
  
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