. was again drawn through the data points. HP! vaLi re y Theair fallout cencentration expected .at the latitude of Bikini during May 1972 is approximately 16 aci/m>, This concentration is only slightly less than the median value found and only half the mean plutonium air concentration detected at Bikini during this period. New York. In May 1972, 37 aci/m° were detected in the air over Again we find a similarity..between the plutonium in Bikini and New York air, and the Bikini mean concentration js still higher than world wide fallout concentrations predicted for this latitude. The 1972 data on air concentration at Bikini also showed a strong geographical correlation, /° The plutonium air concentrations increased in the samplers from the N.W. to S.E. along the length of the Island. There are, therefore, regions of island that have higher plutonium aerosol concentrations than others. individual inhalation exposure then must also depend on the time spent working or living in a specific region of the Island. The . | In summary, without more detailed data from Bikini and without any knowledge on the differer.ce between concentrations from large volumes of open air and the concentrations in an individual's immediate environment resulting from resuspension by a person during his daily routine, we can at least safely assume that ‘the inhalation pathway for plutonium is comparable to New York. The available data strongly suggests that over certain regions of the Island the ‘aeolian concentrations are significantly higher than New York. If resuspension by human activity is also important, there is a much greater chance of higher Yow, oer Sb. exposure at Bikini through the inhalation pathway. 9009120 z Ha