- Se. Alternative B - Cleanup for complete rehabitation 5.b.1. Proposed Actions - Cleanup Plans - Criteria - Radiological Criteria for cleanup actions beyond debris and scrap removal and leading to significant reductions in population exposures and, hence, to reduction of potential health consequences should have two objectives: (1) To assure that individual exposures are below levels at which ware is an unacceptable health risk.,It is likely that doses exceeding those recommended as upper linits by FRC, NCRP and ICRP (170 mrem per year) for exposure to population groups will be acceptable for this purpose. (2) To reduce population exposures to as low as practicable. tt ¢ Specific measures to effect such reduction should be based on cost-benefit considerations. Since soil manipulation is likely to be the major method of dose reduction, particular attention will have to be paid to evaluating the environmental consequences of these procedures. Criteria will necessarily depend on detailed radiological survey data for it will be necessary to establish what can be accomplished toward» reducing exposures by cleanup actions in reference to costs and to methods for reducing exposures by methods other than cleanup. Since DOS-AEC has the responsibility for establishing cleanup criteria, they should have the last word regarding input to DOD-DOI in this area. 6. Environmental Impacts (4) Effects on life systems Soil manipulation (mixing, removal, addition) for the purpose of cleanup or exposure reduction is likely to have minimal ane) direct effect on human inhabitants of the atoll. However ae 7