Table 3. (Concluded) 



Ecosystem, taxonomic group. Concentration Reference 

 collection locale, year of (ppt) 



collection, species, tissue, 

 and other variables 



Solid 374,000 



Process 79 



Discharge 22,000 



Concentrations are listed as mean, (minimum-maximum), maximum=max. , 

 or nondetectable=ND, values recorded. 



Each reference applies to the values in the same row, and in 



the rows that follow for which no other reference is indicated. 



15 



