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On Defining a De Minimis Risk Level for Carcinogens

  • Curtis C. Travis
  • Samantha A. Richter
Part of the Contemporary Issues in Risk Analysis book series (CIRA, volume 2)

Abstract

Several attempts have been made to use the variation in the levels of natural background radiation to define an acceptable level risk for man-made radiation. The philosophical basis for such proposals is that since no correlations have been detected between variations in natural background radiation and adverse health effects, small additions to natural exposure should be acceptable. The difficulty lies in defining “small.” In 1978, Adler and Weinberg proposed using the standard deviation of background radiation levels as a method for establishing radiation exposure limits (Adler and Weinberg 1978). The Adler and Weinberg proposal results in the suggestion that a lifetime cancer risk of about 10−4 is de minimis.* The Adler and Weinberg de minimis risk level was based on the standard deviation of human exposure to background terrestrial and cosmic radiation. We propose to determine the risk levels associated with the standard deviation of human exposure to other radioactive and chemical carcinogens.

Keywords

Risk Level Cosmic Radiation Chemical Carcinogen Indoor Radon Nuclear Regulatory Commission 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Adler, H. I. and A. M. Weinberg, “An Approach to Setting Radiation Standards,” Health Physics 34: 719–720, (June 1978).Google Scholar
  2. Air Resources Board and Department of Human Services, Report to the Scientific Review Panel on Benzene, (November 1984).Google Scholar
  3. Bogen, K. T. and A. S. Goldin, Population Exposure to External Natural Radiation Background in the United States 1960–2000,Environmental Protection Agency ORP/CSD 72–1 (August 1981).Google Scholar
  4. Carcinogen Assessment Group, “Relative Carcinogenic Potencies among 53 Chemicals Evaluated by the Carcinogen Assessment Group as Suspect Human Carcinogens,” U.S. Environmental Protection Agency (October 1984).Google Scholar
  5. Canadian Radiation Protection Bureau, “Section on Uranium from the Canadian Radiation Protection Bureau, Guidelines for Canadian Drinking Water Quality,” supporting documentation to Health and Welfare, Ottawa, Canada (1980).Google Scholar
  6. Cothern, R. C., “Techniques for the Assessment of Carcinogenic Risk Due to Drinking Water Contaminants” CRC Critical Reviews in Press: 32, (October 17, 1985).Google Scholar
  7. Cothern, R. C., and W. L. Lappenbusch, “Occurrence of Uranium in Drinking Water in the U.S.,” Health Physics 45(1): 89–99, (July 1983).CrossRefGoogle Scholar
  8. Cothern, R. C., W. L. Lappenbusch and J. A. Cotruvo, “Health Effect Guidance for Uranium in Drinking Water,” Health Physics 44(1): 377–384, (1983).CrossRefGoogle Scholar
  9. Cothern, R. C., W. L. Lappenbusch and J. Michel, “Drinking Water Contribution to Natural Background Radiation,” Health Physics 50(1): 33–47, (January 1986).CrossRefGoogle Scholar
  10. Drury, J. S., S. Reynolds, P. T. Owen, R. H. Ross and J. T. Ensminger, “Uranium in the U.S. Surface, Ground, and Domestic Waters,” U.S. Environmental Protection Agency, EPA–570/9–81–001 (1981). Environmental Protection Agency, “Notice of Proposed Maximum Contaminant Levels of Radioactivity,” U.S.Google Scholar
  11. Environmental Protection Agency, Federal Register 40: 34324, (1975).Google Scholar
  12. Environmental Protection Agency, “Formaldehyde Determination of Significant Risk,” Federal Register 49: 21870, (May 1984).Google Scholar
  13. Evans, R. D., J. H. Harley, W. Jacobi, A. S. McLean, W. A. Mills and C. G. Stewart, “Estimate of Risk from Environmental Exposure to Radon-222 and its Decay Products,” Nature 290 (March 1981)Google Scholar
  14. Hawthorn, A. R., R. B. Gammage, C. S. Dudney, B. E. Hingerty, D. D. Schuresko, D. C. Parzyck, D. R. Womack, S. A. Morris, R. R. Westley, D. A. White, and J. M. Schrimsher, An Indoor Air Quality Study of Forty East Tennessee Homes, Oak Ridge National Laboratory, ORNL-5965 (December 1984).CrossRefGoogle Scholar
  15. Michel, J. and W. S. Moore, “228Ra and226Ra content of groundwater in fall line aquifers,” Health Physics 38: 336–671, (1980).CrossRefGoogle Scholar
  16. National Academy of Sciences, National Research Council, The Effects on Populations of Exposures to Low Levels of Ionizing Radiation, BEIR-1 (1972).Google Scholar
  17. National Academy of Sciences, National Research Council, The Effects on Populations of Exposures to Low Levels of Ionizing Radiation, BEIR-3 (1980).Google Scholar
  18. National Council on Radiation Protection, Evaluation of Occupational and Environmental Exposures to Radon and Radon Daughters in the United States, NCRP Report 78 (1984).Google Scholar
  19. Nero, A. V., “Indoor Concentrations of Radon 222 and Its Daughters: Sources, Range, and Environmental Influences,” Indoor Air and Human Health, ed. by R. B. Gammage and S. V. Kaye, Lewis Publishers, Chelsea, Mich., 43–67, (1985).Google Scholar
  20. Nuclear Regulatory Commission, Safety Goals for Nuclear Power Plant Operations, U. S. Nuclear Regulatory Commission NUREG-0880, Rev. 1 (May 1983).Google Scholar
  21. Nuclear Regulatory Commission, Proposed Revision of 10 CFR Part 20, “Standard Protection Against Radiation, U.S. Nuclear Regulatory Commission SECY-85–147-Part 1 (April 1985).Google Scholar
  22. Oakley, D. T., Natural Radiation Exposure in the United States, Office of Radiation Programs, Environmental Protection Agency (1972).Google Scholar
  23. Oswald, R. W., “Indoor Radon Results in the United States,” Terradex Corporation (June 1984).Google Scholar
  24. Symons, J. M., A. Thomas, J. Bailor, C. Keith, J. DeMarco, K. K. Kropp, G. G. Robeck, D. R. Seeger, C. J. Slocum, B. L. Smith and A. A. Stevens, “National Organics Reconnaissance Survey for Halogenated Organics,” Journal AWWA: 634— 652, (November 1975).Google Scholar
  25. Travis, C. C., S. A. Richter, E.A.C. Crouch, R. Wilson, and E. Klema, “Cancer Risk Management”, Environmental Science and Technology 21:415–420, (1987).CrossRefGoogle Scholar
  26. Turekian, K. K. and L. H. Chen, “The Marine Geochemistry of Uranium Isotopes, 230Th and 231Pa, Activation Analysis,” Geochemistry and Cosmochemistry, ed. by A. O. Brunfelt and E. Steinnes, UNIVERSITETSPOR-LAGET, Oslo-Berger-Tromso (1971).Google Scholar
  27. United Nations Scientific Committee of the Effects of Atomic Radiation, “Ionizing Radiation: Sources and Biological Effects,” 19, U.N., New York (1982).Google Scholar
  28. Watson, A. P., E. L. Etnier and L. M. McDowell-Boyer, Radium-226 in Drinking Water and Terrestrial Food Chains: A Review of Parameters and an Estimate of Potential Exposure and Dose, ORNL/TM-8597 (1983).Google Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • Curtis C. Travis
    • 1
  • Samantha A. Richter
    • 1
  1. 1.Health and Safety Research DivisionOak Ridge National LaboratoryOak RidgeUSA

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