10-5 



The high impact of the metal industry of 

 Meriden and Wallingford is felt locally 

 but becomes markedly attenuated downstream. 



Wallingford 



New Haven 



Ag 0.2 



Pb 270 



Cu 80 



Brodlay Hubbard Ires. 



Concer.trations in 

 sedlnents in ppia. 



Figure 10-2. The concentration of silver, lead and copper in sediments of 



the Quinnipiac River system and in New Haven Harbor. New Haven 

 Harbor Ecological Studies Summary Report, 1979, 



