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Related Experiment Videos

Data base selection in toxicological risk assessment and management.

M A Kamrin1

  • 1Center for Environmental Toxicology, Michigan State University, East Lansing 48824-1206.

Regulatory Toxicology and Pharmacology : RTP
|June 1, 1990
PubMed
Summary

Regulatory agencies frequently use different data to set maximum allowable levels for pesticides. This study found no scientific basis for these data selection differences between drinking water and workplace air regulations.

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Area of Science:

  • Environmental Science
  • Toxicology
  • Regulatory Science

Background:

  • Federal regulatory agencies establish maximum allowable levels for environmental contaminants.
  • Variations in these levels are often attributed to differing risk management decisions.
  • This study investigates an alternative hypothesis: differences in data selection contribute to interagency variation.

Purpose of the Study:

  • To test the hypothesis that divergent data selection significantly impacts interagency variation in regulatory levels.
  • To compare the data utilized by the Environmental Protection Agency (EPA) Office of Drinking Water and the Occupational Safety and Health Administration (OSHA).

Main Methods:

  • Comparative analysis of databases used by EPA and OSHA for pesticide level setting.

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  • Evaluation of data applicability for drinking water versus workplace air exposure scenarios.
  • Assessment of data characteristics including exposure route, species, and duration.

    • Main Results:

    • The same scientific data are infrequently used by both agencies for regulatory level determination.
    • Differences in data selection are not explained by the applicability to specific exposure types (drinking water vs. workplace air).
    • No significant differences were observed in data regarding exposure route, species, or exposure duration.

    Conclusions:

    • Divergent data selection practices, rather than solely risk management differences, contribute to interagency variation in maximum allowable levels.
    • No clear scientific rationale supports the observed differences in data selection between regulatory bodies.
    • Further investigation into other potential selection factors is warranted.