422 TRANSURANIC ELEMENTS IN THE ENVIRONMENT 



1966 I 1967 

 DATE 



Fig. 1 Monthly means of daily gross alpha activity in ambient air at station S-8 (75 m 

 east of the oil-barrel storage area). Aliquots of Gelman AH filter material were counted 

 in a gas-flow proportional detector. Data adapted from D. C. Hunt, Environmental 

 Sciences, Rockwell International, personal communication. 



TABLE 1 Total Monthly Gross Alpha Activity in Ambient Air at Station S-8 



(75 m East of Oil-Barrel Storage Area) During Disturbances 



of the Storage-Area Surface*! 



Dates 



Event 



Alpha activity, 

 pCi/m' 



7/59-9/63 No large-scale leaking. 



1/64-1/65 Large-scale leaking. 



1/65 Contaminated soil covered with fill. 



1/66 Small building added to filter contaminated oil from 



leaking to new drums. 



1/67 Drum-removal activity begun. 



6/68 Last drums removed but high winds spread some activity. 



2/69 Weeds burned and area graded for paving. 



9/69 Asphalt pad completed. 



11/69 Four sampling wells dug through pad. 



4/71 Drainage ditch dug on west side of asphalt pad. 



0.009 

 0.025 

 0.01 

 0.014 



0.038 



0.188 



0.34 



0.013 



0.033 



0.033 



*Air-filter material was counted directly in a gas-flow proportional counter. 



fAdapted from D. C. Hunt, Environmental Sciences, Rockwell International, personal 



communication. 



