Re: carcinogenic risk from external exposure to radionuclides in streams/lakes

["Otto G. Raabe" <ograabe@ucdavis.edu>]

December 16, 1998
Davis, CA

Dear Tom:

The EPA's Office of Radiation and Indoor Air compiles HEAST Table 4 that
provides carcinogenic slope factors for external exposure to rads in soil
is unreliable since it assumes risk factors based on speculative linear
risk models. Similar risk factors for exposure in water would be equally
unreliable. Please see the Health Physics Society position paper on
"Radiation Risk in Perspective" at http://www.hps.org

Otto
		*****************************************************
		Prof. Otto G. Raabe, Ph.D., CHP
              Institute of Toxicology & Environmental Health (ITEH)
		     (Street address: Old Davis Road)
		University of California, Davis, CA 95616
		Phone: 530-752-7754  FAX: 530-758-6140
		E-mail ograabe@ucdavis.edu
              *****************************************************
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