TRANSURANIC AND TRACER SIMULANT RESUSPENSION 239 



HANFORD 

 METEOROLOGICAL 

 STATION TOWER 



U-POND AREA^X 

 S-16 



GABLE 



MOUNTAIN 



POND 



Fig. 1 Location of Hanford study sites. 



ORIGINAL Security 



°'L FENCE -V 



STORAGE \ 



AREA- ■^ 



' 61 



0.3 D— |/A2 

 0.3 D-|' 30 

 ^A3 



/ 



SITE A 



V- CATTLE 

 \ FENCE 

 14 \| 



SITE B 



0.0, SAMPLING ELEVATION, m 

 0.0, DISTANCE BETWEEN SITES, m 



SAMPLER OPERATION 



O CONTINUOUS, ALL WINDS 

 A 4.1- to 6.3-m/sec WINDS 

 < 6.3- to 9.8-m/sec WINDS 



CASCADE IMPACTOR 

 WITH COWLS, 0.57 m^/min 



n CONTINUOUS HIGH-VOLUME SAMPLER, 1.4 m-^/min 



Fig. 2 Rocky Flats tower locations. 



• Plutonium from contaminated environmental surfaces at Rocky Flats (Sehmel, 

 1976a: Sehmel and Lloyd, 1976b) (Fig. 2). 



• Controlled inert simulant tracer particles from selected surfaces on the Hanford area 

 (Sehmel, 1973b; 1975; 1976c; 1977b; Sehmel and Lloyd, 1976a; 1976c). 



Plutonium resuspension results from off-site Hanford near the Prosser barricade are 

 reported here for the first time. Most wind-caused resuspension research concerns 

 resuspension from vegetated areas. Experiments concerning local resuspension caused by 

 mechanical activity include tracer studies of resuspension rates for a man walking across 

 an asphalt strip and for cars and trucks driven on asphalt or cheat grass. 



