These data provide not only a basis for dose assessment but they also provide a basis for evaluating the environmental residence time of radionuclides in foad species. Based on the best results currently available from ongoing DOE programs, sampling at Rongelap and Utirik need be no more frequent than once every 4 years providing that historical and/or new data or altered agricultural practices do not indicate cycle. amore frequent sampling Sampling at Enewetak and Bikini Atolls should be conducted on an annual basis unti] a reasonable data base is established. The sampling of both the terrestrial and marine environments should require no more than 8 people for 10 to 14 days at each atoll. To minimize man power and logistic costs the sampling for both marine and terrestrial environments should be carried out concurrently. Whenever possible, the local population will be relied on for advice and assistance in sample collection at their atoll. The islands at the atolls which currently have subsistence crops available are: Bikini Atoll - Bikini and Eneu Islands; these islands are sampled under the current program. Rongelap Atoll - Rongelap, Naen, Kabell, Enjaetok, Mellu Utirik Atoll - Utirik, Aon, Pigrak Enewetak Atoll ~ Only about 4 coconut trees and 2 Pandanus trees are currently available in the contaminated northern half of the atol] but food crops will be collected where available from the current southern residence islands of Japtan, Medren and Enewetak. However, in 1980, 6 islands (Aomon, Bijire, Aej, Lujor, Lojwa, and Alembe}), were planted with coconut. Therefore, by 1985 or 1986 coconut fruit 28