- 15 - Vegetation Over 400 vegetation samples were analyzed during the Enewetak survey. There were only 3 samples where both 241a and were detected. The average values for these 3 samples were 0.44 pCi/g 239,240), and 0.053 pCi/g 0.82 pCi/g. 239 ,240 Pu 241 Am. The 24154 concentration is 1.85 (0.44) = The maximum 24]an activity resulting from this level of 241puy is 0.026 (0.82) = 0.021 pCi/g 2 present 24lam concentrations. Al Am which is a 40% increase above The total 241 Am activity is 0.053 + 0.021 0.074 pCi/g which is 0.074 pCi/g/0.44 pCi/g = 0.168 or 17% of the 739>74%py concentration. Page 10,line 19 to Page 11, line 10 - "The resuspension measurements and calculations which relate the air contamination to the soil contamination are not immediately compelling, and deserve a much more careful analysis than I have given them. I would be surprised if the analysis is meaningful to factor of 100, when used to determine public health guidelines. Resuspension is poorly understood, it is sensitive to windspeed, soil characteristics, vegetation, humidity, rainfall, mechanical disturbance, physical and chemical history of plutonium particles in soil. How then does one@nsider the exposure of children throwing dry sand on a windy day at the beach? I would anticipate large fluctuations about the implicity exposure levels, which, even for the Limiting soil contamination guidelines and predicted air concentrations associated with these guidelines, will be approximately a maximum permissible lung burden." Comments: The issues raised by Dr. Geesaman are not new. We are weil aware that all of the variables which are identified have not been analyzed with respect to their individual or combined . influence upon resuspension - factors. For that reason additional air sampling studies will be carried out for a period of twelve months, as described in the DEIS, Even though measurements made primarily reflect airborne plutonium from worldwide fallout levels and cosmic ray activity, because of the uncertainties identified the assumptions made in deriving the various organ doses due to the inhalation of plutonium are quite conservative. consisting of low A constant air concentration of plutonium is assumed,