-1o- TABLE 3. Aerosol size characteristics on Bikini Island determined by cascade impactors and the optical particle analyzer at a height of 1.1 m. ( .’ Stabilized Bare Soil Disturbed Bare Soil Median Aerodynamic P; Activity Diameters (urn) (pCi g-l) Pu Concentration (aCi m-3) Mass Loading (Ug m-3) Hass Loading-Optical 1.73 2.46 2.05 2.43 2.03 2.46 -- (~g m-3) Sea Spray - Mg (vg m-3) 2.40 (.11)* -- 2.59 2.16 3.09 Geometric Standard Deviation Pu Activity (pCi g-l) -- /lass Loading - Optical (ugm-3) * Optical particle analyzer data with standard 2.82 (.25)* deviations in parentheses. . ,, . .