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Interim procedures for estimating risks associated with exposures to mixtures of chlorinated dibenzo-p-dioxins and-dibenzofurans (CDDs and CDFs) and 1989 update
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1989
Year
Chlorinated Dibenzo-p-dioxins And-dibenzofuransExposure AssessmentPb89 125041Environmental ChemistryEnvironmental ExposureEnvironmental HealthManagementToxicologyToxicological AspectPublic HealthPersistent Organic PollutantChemical HazardHuman ExposureEcotoxicologyChemical PollutionInternational Tefs/89EpidemiologyEnvironmental EngineeringEnvironmental ToxicologyInterim Procedures
In 1987, the U.S. Environmental Protection Agency (EPA) formally adopted an interim toxicity equivalency factor (TEF) procedure (see PB89 125041), which has been used in addressing a variety of situations of environmental contamination involving CDDs and CDFs. The method, published as Interim Procedures for Estimating Risks Associated with Exposures to Mixtures of Chlorinated Dibenzo-p-Dioxins and -Dibenzofurans (CDDs and CDFs), is republished as Part I of the document. Since the 1987 report was published, the EPA has been active in an international project aimed at adopting a common set of TEFs, the International TEFs/89 (I-TEFs/89), to promote consistency in addressing contamination involving CDDs and CDFs. The 1989 Update to the Interim Procedures for Estimating Risks Associated with Exposures to Mixtures of Chlorinated Dibenzo-p-Dioxins and -Dibenzofurans (CDDs and CDFs) identifies EPA's adoption of the I-TEFs/89 as a revision to the method currently in use. The 1989 Update is Part II of the document.