Milton Jordan August 3, 1979 Page Four Mr. Or materials which show the number of fatal cancer cases and the number of genetic malformations to be expected from a dose of 170 millirem per year, and the expected increase in the frequency of such cancer cases and genetic malformations, to be expected for the predicted dose rates presented on page 8 of the attachment. In other words, what is the expected frequency of fatal cancer cases at an average dose rate population of 170 millirem per year, for the comparec with, for the whole body, a dose rate of 210 millirem per year, 240 millirem per year, and 260 millirem per year? For another example, what is the expected increase in leukemia cases at 170 millirem per year compared with 190 millirem per year, 260 millirem per year, 280 millirem per year, and 300 millirem per year? What is the expected frequency of genetic anomalies at an average whole body dose rate of 5000 millirem per 30 years compared with 2700 millirem, 3200 millirem, millirem? 4700 millirem, Please provide any 5200 millirem and records, documents 5700 and materials which would explain why the attachment and the letter of May 15 did not contain any discussion of the biological risks associated with the predicted doses. If no such documents exist, please so state, and explain why such a discussion was not included in the advice provided to the Department of Interior. Thank you in advance for your prompt attention to this request. Sincere Theodore xC: Ruth C. Clusen Bruce Wachholz Wm ge ics // . Mitcheil