54 



NEW LONDON SEDIMENT CHEMISTRY 



250 



200 



150 



ppm Zn 



100 



1986 



% TOC 



1986 



NA 



1987 



1987 



20,000 



1 5,000 



10,000 



5,000 



500 



250 



1986 



ppm Oil & Grease 



1986 



■> RECENT 

 0= REFERENCE 

 0= RELIC 

 ca= OFF MOUND 

 ND= NOT DETECTED 

 NA= NOT ANALYZED 



1987 



ND 



1987 



Figure 6-26. (cont.) 



DAM OS Summary Report, 1985-1990 



