LOS ALAMOS SCIENTIFIC LABORATORY UNIVERSITY OF CALIFORNIA LOS ALAMOS. NEW MEXICO 87545 To: Dr. W. J. -3- Bair DATE: August 15, 1978 should result in a large improvement in this situation. In the mean-time we should continue with the program as outlined, albeit keeping our eyes open for significant bits of data that could result in useful adjustments. (This requires that someone, presumably Livermore, be on top of the situation and continually follow the impact of new data.) I do not believe that it would be useful to provide detailed page by page comments be- cause much of what is in the report is similar to what we have heard recently. Thus, the new list is not dissimilar to that given in our last meeting and I assume that LLL can get together with Bramlett and iron out the differ- ences. I do have some problems with Bramlett's use of the dose distribution factor but this is a detail. It may also be noted that the committee noted the problem with the LLL amer- icium bone calculation following inhalation and this has been corrected by Livermore. I would suggest that the committee focus on appropriate metabolic parameters to be used in such calculations. This would include such items as lung weight, bone weight, inhalation rate, and similar values. We have, I believe, already assumed americium to be Class W although some review of this may be useful. Such a set of parameters will allow better intercomparison between individual calculations and will avoid potential future controversy. I would also suggest that some attention be place on the other nuclides (°°Sr and !3’Cs) in the program at Livermore and in the Committee deliberations with the goal of providing dose estimates that will place a finite bound on the length of time before each island can be used. Sincerely yours, feBal YAP Z. W. JWH:dl Healy 7