The overall risk evaluation for various radioactive waste management concepts includes calculation of radiation doses to individuals and local populations. Radiation doses are the most appropriate measure of the consequences of unforeseen releases of radioactive materials to the environment and dose criteria are available by which the severity may be judged. A comprehensive dose computational model, developed and used for other Atomic Energy Commission studies, has been adopted to improve its flexibility and to assist in evaluating alternative means for disposal of high-level waste. Typical input terms for normal use include source terms (radionuclide release rates to man's immediate environment) and dilution factors. Outputs include individual pathway doses and total doses to maximum individuals for both an urban and a rural population. Whole-body doses plus doses to other critical organs are obtained, as well as the fractional dose contributions of individual nuclides. Doses for one year or total doses for fifty years of exposure are available. Although all of the many factors and assumptions used can be changed if desired, listings of those currently being used are given. Factors used are for the most part from recognized sources, supplemented by local data and assumptions as necessary. For doses to individuals, dietary and living habits are postulated which will tend to maximize the doses which might occur from potential release modes. Examples of dose calculations are included to demonstrate use of the methodology for a hypothetical geological disposal concept, with direct release to man's immediate environment after storage periods ranging from 100 to 1,000,000 years. The most significant nuclides in terms of dose will vary with time and mode of release, but are likely to be /sup 90/Sr and /sup 137/Cs at 100 years, americium and plutonium at 1,000 to 10,000 years, and uranium daughters at longer periods. (auth)