ae cet a a er na nannies teresrams i. . pebuite: Field Operations Coordination at NVOO; measurements involving the Cleanup Survey; External Dose and Soil Survey; Air, Biota, ‘and Potable Water Survey; Marine Survey; and Sample Analysis; and Data Evaluations. Authors of detailed plans for each of the last six categories are indicated on the chart, It is now . expected that the program will involve personnel from the following organizations: NVOO, NERC (EPA), LLL, LASL, MCL, Univ. of Wash., HASL, Eberline Inst. Co., TTPI, Univ. of Hawaii, DOS, and DBER, plus organizations not yet identified involved in the Radiological Assessment Review Group. For orientation purposes a map of Eniwetok Atoll is shown in Fig. 2. Previous surveys in May and July of this year indicate that radiological con- tamination levels vary from light (1-10 ,R/hr at 3') for islands on the southern half of the atoll to heavy (>1000,R/hr at 3') on Runit, with islands on the northern half of the atoll in intermediate categories. As can be seen from Fig. 2, no survey data are available for at least 10 of the islands. Data on radiological levels in the marine environment and in air are particularly scarce. Our intent is to obtain samples and data from the least contaminated islands first, then move to the more highly contaminated islands, and end on Runit. concurrently with the terrestrial survey. The marine work will run This is not, however, meant to imply that the least contaminated land areas have the least contaminated adjacent marine environment. Currents and other processes in the lagoon have probably redistributed the initial inventories of radionuclides to the extent that any attempt to predict relative contamination levels in the marine area near each island is presently impossible. In this survey, we will design and carry out our field studies in the Atoll with sensitivity to preservation of the natural environment. This means that we will make an effort to utilize the literature, outside experts, and our own experience in order to sample living populations and soils so as not to generate imbalances. Special care will be taken to avoid the addition of persistent toxic material, wastes and refuse, and to leave the environment of Atoll in as least as good a condition as when we entered it. II, RADIOLOGICAL STATUS AND DOSE EVALUATION: The Data Evaluation Group is an integral part of the program plan for