256 



TRANSURANIC ELEMENTS IN THE ENVIRONMENT 



TABLE 2 Ratio of Plutonium Concentration per Gram of Airborne Soil to That 

 per Gram of Ground-Surface Soil at Rocky Flats 



*From Fig. 11 as a function of particle diameter. 



|From Table 1 for total ground-surface sample at 5-cm depth. 



:j:From Fig. 12 as a function of particle diameter. 



TABLE 3 Concentrations of Plutonium and Cesium in 

 Hanford Ground-Surface Solid Samples Reported in the 



Literature 



Concentration, MCi/g solids 



Pu 



Cs 



Location 



Year 



Range 



Average 



Range 



On site (Nees and 



Corley, 1975) 

 Inside 200 Areas 



(Corley, Robertson, 



and Brauer, 1976) 

 BC Area(Maxfield, 



1974; Mishima and 



Schwendiman, 1973; 



Nees and Corley, 



1975) 

 Within Hanford 



site boundary 



(3 to 26 km) 



(Corley, Robertson, 



and Brauer, 1976) 

 Site perimeter 



(Nees and Codey, 



1975) 

 Off site 



(19 to 34 km) 



(Codey, Robertson, 



and Brauer, 1976) 



1973 LAL* to 9.7x10-" LAL* to 



4 X 10"* 2.4 X 10-* 



1971 2.6 X 10-« to Not reported 

 6.9 X 10-" 



1974 



1971 7.2 X 10-' to 

 1.2 X 10-" 



1973 LAL* to 

 4x 10"' 



1971 LAL* to 



7.6 X 10- 



7 X 10-" 



2.1 X 10-= to 

 2.5 X 10-^ 



Not reported 



LAL* to 

 1.5 X 10-* 



Not reported 



*LAL, less than radiochemical analytical limit. 



