Characterization Of Data Uncertainty And Variability In IRIS Assessments Pre-Pilot Vs Pilot/Post-Pilot
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Overview
The second group of eight was selected from assessments released from 1995 to present, also referred to as "Pilot/post-Pilot assessments." Each IRIS assessment (the summary sheets and the Toxicological Review) was reviewed to determine how uncertainties in the data bases, modeling extrapolation, and other factors were considered in the development of toxicity values. Comparisons between the pre-Pilot and Pilot/post-Pilot groups were made as part of this review. Such a comparison facilitates a better understanding of the evolution in the procedures used to develop IRIS assessments and the extent to which uncertainty and variability have been incorporated into IRIS assessments.
Citation
U.S. EPA. Characterization Of Data Uncertainty And Variability In IRIS Assessments Pre-Pilot Vs Pilot/Post-Pilot. U.S. Environmental Protection Agency, Washington, D.C., 2000.
Download(s)
This document has been reviewed in accordance with U.S. Environmental Protection Agency policy and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
- Characterization of Data Uncertainty and Variability in IRIS Assessments Pre-Pilot VS Pilot/Post-Pilot (PDF) (46 pp, 135 KB, about PDF)
- Appendix A - Comments from Reviewers (PDF) (214 pp, 459 KB, about PDF)
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