Errors 4
Errors 4 : Deviation between estimated value and true value. (1) False Positive: in Superfund risk assessment, a conclusion that contaminant concentrations in onsite soil are higher than background soil concentrations when in fact they are not; could result in unnecessary remediation; (2) False Negative: a conclusion that onsite contaminant concentrations are not higher than background concentrations when in fact they are; could result in failure to clean up a site when such action is necessary. [AIHA, 2000: Risk Assessment Principles for the Industrial Hygienist]
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