20.00 



16.00 



LEE METCALF NWR - WET45 



mil PPM IN SEDIMENT 

 I I DETECTION LIMIT 



12.00 



8.00 



4.00 



0.00 



I I I I I 

 Cu Sb Be Pb B Cd Mo Cr Co V 



I I I r^ 



As Hg Se Ni Zn 



