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Actinides in deer tissues at the rocky flats environmental technology site.

Andrew S Todd1, R Mark Sattelberg

  • 1U.S. Fish and Wildlife Service, Building 111, Rocky Mountain Arsenal NWR, Commerce City, Colorado 80022, USA.

Integrated Environmental Assessment and Management
|April 28, 2006
PubMed
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Limited hunting at Rocky Flats National Wildlife Refuge is proposed. Actinide levels in deer tissues are minimal, posing a low human health risk from consumption, well within EPA guidelines.

Area of Science:

  • Environmental Science
  • Toxicology
  • Wildlife Management

Background:

  • Rocky Flats historically contaminated environmental media with actinides.
  • Proposed compatible public use includes limited deer hunting at the future refuge.
  • Actinide contamination requires assessment for wildlife and human health risks.

Purpose of the Study:

  • To measure actinide concentrations in Rocky Flats deer tissues.
  • To assess potential human health risks from consuming edible deer tissues.
  • To inform wildlife management and public use decisions at Rocky Flats.

Main Methods:

  • Harvested liver, muscle, lung, bone, and kidney tissues from 26 resident and 1 control deer.
  • Measured concentrations of specific americium, plutonium, and uranium isotopes.

Related Experiment Videos

  • Calculated human health risks based on detected actinide levels and established thresholds.

    • Main Results:

    • Only 17 of over 450 actinide analyses exceeded method detection limits.
    • Two analyses exceeded risk thresholds when analytical uncertainty was included.
    • Maximum calculated human ingestion risk was 4.73 x 10(-6), within EPA acceptable range.

    Conclusions:

    • Actinide concentrations in edible deer tissues are very low.
    • Human health risks from consuming Rocky Flats deer are minimal.
    • Proposed hunting is likely compatible with wildlife refuge goals.