Record Display for the EPA National Library Catalog


Main Title Estimating 'Concern Levels' for Concentrations of Chemical Substances in the Environment.
CORP Author Environmental Protection Agency, Washington, DC. Office of Pollution, Prevention, and Toxics.
Publisher Feb 1984
Year Published 1984
Stock Number PB2007-102105
Additional Subjects Environmental concentration ; Chemical substances ; Aquatic environment ; Levels (Quantity) ; Adverse effects ; Evaluation ; Procedure ; Rationale ; Methodology ; Lead Magnesium Niobate (PMN) ; Toxic Substance Control Act (TSCA)
Library Call Number Additional Info Location Last
NTIS  PB2007-102105 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 49p
In evaluating PMNs, the Environmental Effects Branch attempts to estimate levels of a given compound which, if met or exceeded in the environment, could cause adverse effects. The data set from which such concentrations are estimated may run the gamut from fairly complete packages, containing both acute and chronic test data, to only the structure of the chemical itself. The purpose of this position document is to describe the procedure and rationale followed to estimate environmental concentrations of concern for a particular chemical. The methodology described should identify (at least 95% of the time) concentration concern levels for TSCA chemicals which may cause adverse environmental effects.