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exceedance(n) (geology) the probability that an earthquake will generate a level of ground motion that exceeds a specified reference level during a given exposure time
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exceedanceViolation of the pollutant levels permitted by environmental protection standards.
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exceedanceViolation of the pollutant levels permitted by environmental protection standards.
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exceedanceWhen the measured level of a contaminant is greater than the level set by a standard or limit, an exceedance is said to have occurred. Contamination at a level that exceeds the limit for that contaminant.
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exceedanceA violation (according to DEQ policy) of the pollutant levels permitted by water quality criteria.
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exceedanceViolation of the pollutant levels permitted by environmental protection standards.
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exceedanceA measured level of an air pollutant higher than the national or state ambient air quality standards
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exceedanceA measurement of air pollution that exceeds the level designated to be safe by the Federal Clean Air Act in any given hour or on any given day.
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exceedanceA concentration of an air pollutant that exceeds a standard or criteria
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exceedancea measured level of an air pollutant higher than the national or state ambient air quality standard
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exceedanceviolation of environmental protection standards by exceeding allowable limits or concentration levels.
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exceedanceIn the US, a measured level of an air pollutant higher than the National Ambient Air Quality Standards (NAAQS) set by the Environmental Protection Agency (EPA). The violation of a national ambient air quality standard is based on years of data, so monitoring an exceedance does not necessarily mean that a violation of the standard has occurred.
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