Sampling Procedures The majority of the sampling Atolls. was done on 3ikini,, Rongelap and Usirik Data obtained from Wotho and Xwaialain provide baseline in‘forna- tion. concerning the radioactive contenc of soil, flora and Sauna fadigenous to the Northern Marshall Islands. The sampling orocedures ac Wotho, Kwajaleia, Rongelap and Utririk atolls were essentially similar. Sammles were obtained in the areas which were inhabited by the Marshallese or in locations. which were actual or pocantial food gathering resources, Because the Bikinians were only beginning to return to their atoll, the inicial monitoring of Bikini Island required a program with a wider scope, Ac the cime S8NL started its surveys of Bikini Atoll, two questions required further elucidation. The firse was in reference to the external dose shat one would receive while living on Bikini Island. The second question dealt with the orediction of incernal dose commitments due to ingestion of food products grown on the aroll. Consequenely, the monitoring program was designed to thor- oughly examine Bikiai Island and several other islands in the atoll. Sampling on Bixini Island was conducted in a grid pattern which corresponds to future areas of habitation and food produceion. Other islands in the atoll were exa- mined in a similarlythorough way to verify initial assumpcions regarding the radiological concerns ac these locacions. The Bikini Atoll section of che Marshall islands environmental monitoring program provides the predominance bulk of data presented in this repors. Various islands within this atoll were sampled and surveyed in relative proportion so the projected development according to the Bikini Atoll Master Plan (1).