ts Los) we ante onecenbsceee Ge 3.5 cosmic includes ~ 0.2 from natural and water immersion. be near beach areas and lower dose areas q > 305 em so reduction due to plowing is smaller. However, initial dose in these situations is small to begin with, i.e., 3-5 om relaxation lengths @w factor of 3 reduction factor are for higher dose areas and thus are conservative. | outer island dose rate is average for all locales (beach, lagoon, perimeter, interior) andthus 100 yR/h values should be very conservative even for hotter islands. Alternative would be to further assign fractions of times and people to various locales on specific islands and to various outer islands, an exercise of dubious value. d. | ~ | calculated doses are free air exposures - uncorrected for body or structure shielding. values in Table III for fraction of dose due to Co-60 are probably too low. Thus, ‘doses in Table IV are overestimates from this stand-~ point (Cases Ia and Ib particularly). Additional calculations indicate using more realistic Co-60 fractions would lower doses in Table IV about 15%. :/ ‘a . © i Ge