difficult to assure that any guidance is met for an individual or a group of individuals. The ICRP cautions on the use of their models for an individual because a number of uncertainties are present. All of this leads to’ the conclusion that it will be difficult to obtain a calculation that will be acceptable to all parties, particularly if opposition groups develop. For these reasons, it is my belief that the screening levels may play a large role in any future accident cleanup and may, in fact, become the de facto standard. If an accident occurs in a foreign country, there is little doubt in my mind that they will consider the screening level as the primary standard.