FS 100 0 200400 ranea! Pacific ocean Meters Lagoon A map of Bikini Island showing specific areas of interest for the dose calculations. Existing houses are situated within area l. Areas 2 and 3 are proposed village sites for future housing units. The interior portion of the island is denoted by area 4. the radioactivity from those islands. Since the islanders spend a Gamma exposure rate data reported by Bennett and Beck, > Held, Lynch et al. Moore,” > Gustafson, and Robison ct al. used for this purpose. results, Smith LO 6 considerable fraction of their time in the immediate vicinity of their homes, and it may be certain remedial Were Their feasible to actions the exposure rates in take to reduce this area. For instance, placing 5 cm of clean in conjunction with a simplified area weighting scheme, coral gravel around the houses out yielded the values presented in to a distance of 10 m, a common Table 3. practice in the Marshall Islands, Note that these are rough estimates since the data are scarce will reduce the exposure rates by a and were collected over a span of factor of two. almost 10 years. with clean soil the top 20 cm of soil over The exposure rate Removing and replacing out to a distance of 10 m from the the lagoon was estimated to be 3.3 uUR/h due to the cosmic ray houses will reduce the exposure contribution and an additional 0.2 rates by a factor of ecight. UR/h due to naturally occurring addition, the shielding provided by radionuclides the houses sea water. * Pon a £ Ser Coat -18oe ad the CF in themselves will In reduce the