locations of samples collected, analyze the the atolls and the concentrations in cistern water and groundwater sampled at supplies. from atoll from ingestion of water radiological dose assessment radionuclide the summarizes report second The samples.” and to process the methods used and sampled, Other reports planned include a description of our analytical quality-control program coordinated by Dr. C. D. Jennings of the Western Oregon State College and radionuclide concentrations in components of the terrestrial environment. Some reports individual will contain atolls while the in others combination of several atolls. for publication this series provide the results results and dose will be assessments presented an scientific assessment of exposure pathways including external gamma, journals. The final 241 an, and any for the dose from total report the a of the other of major terrestrial food chains including food products and drinking water, marine food chains, and inhalation. 90, 1374, Here we summarize the concentration data for ; + 239 2405. for In addition, some results are being summarized international in will analytical gamma emitters in fish 238 and Pu, clam muscle tissue dissected from the different species collected at the atolls or islands. More recent results from Bikini and Enewetak Atolls, however, will appear in a separate report. Radiological doses at each atoll or island are calculated radionuclide from the average concentrations in fish and clam muscle tissue assuming an average daily intake of 200 and 10 g, respectively. The data summarized were abstracted from a complete compilation of radionuclide . : : . . 7 concentrations in the various organs and tissues of fish analyzed. FISH AND INVERTEBRATE SAMPLE COLLECTION COLLECTION METHOD Throw nets were used exclusively to catch reef fish at the atolls. pelagic and benthic jigs or baited fish were collected on sport hooks while trolling in the fishing gear using feathered lagoons. Edible collected by hand (free diving) in shallow areas of each lagoon. clams were returned to plastic bags, and the frozen. research vessel, The samples were Large segregated by shipped clams The fish and species, frozen to were the placed in Lawrence Livermore National Laboratory (LLNL) for storage and eventual processing. i j i 4