TRANSURANIC AND TRACER SIMULANT RESUSPENSION 255 



100 



E 10 — 



(J 





< 



CO 



< 



10" 



side of U-Pond 1 _ 



t 480-m separation 

 side of U-Pond J — 



O East side of U-Pond 

 A West 



T 

 / 

 / 

 / 

 / 

 / 



/ 



; 



238 



Pu < 1 ^ 239p^ 



J L 



1 a limits 

 I I I II I I 



10" 



lO''^ 10 ^ 10'*^ 



AVERAGE PLUTONIUM CONCENTRATION ON AIRBORNE SOIL, AiCi.g 



10 



-5 



Fig. 15 Airborne nonrespirable ^^'^Pu and ^^'Pu on nonrespirable airborne solids at 

 Hanford U-Pond during Feb. 27 to Nov. 10. 1975 (particles collected in cowls). 



TABLE 1 Results of Selected Surface Soil Samples 

 at Rocky Flats* 



*Microcuries per gram of dry soil ±% standard deviation; 

 samples from 2000-cm^ area at 5-cm sampling depth. Two 

 samples per site. 



Identification of relationships between sites of radionuclide concentrations on 

 airborne solids and contaminated ground solids would be useful in establishing criteria for 

 releasing contaminated areas for other uses. Concentrations on Hanford ground surfaces 

 obtained from the literature (Corley, Robertson, and Brauer, 1976; Maxfield. 1974; 

 Mishima and Schwendiman, 1973; Nees and Corley, 1975) are shown in Table 3 for 



