102 



MBDS SEDIMENT CHEMISTRY 



250 



200 



| 150 



a 100 



50 







Cr Cu Ni Pb Zn 



Cr Cu Ni 

 1985 

 ppm As 

 20 1 



250 

 200 

 150 



nioo 



s 



v 50 

 v 

 



fcjL 



Cr Cu Ni 

 1986 



Pb Zn 



250 

 200 

 150 

 1001 

 50 



1* 



il 



dn 



Uj 



Cr Cu Ni Pb Zn 

 1987 



ppm Cd 



1985 



1986 



1987 



zu 







15 







10 







5 

 



1985 1986 



NA 



1987 



ppm Hg 

 0.35- 



0.30 -I 



0.25 



0.20 



0.15 



0.10 



0.05 







■■- 



RECENT 



CD= 



REFERENCE 



C=D= 



RELIC 



53= 



OFF MOUND 



ND= 



NOT DETECTED 



NA= 



NOT ANALYZED 



SEE CORRESPONDING KEYS 



BELOW WITH YEAR 



1985 



1986 



1987 



Averaged Data Values for Sample Locations 



1985 



1986 



1987 



■■= 9-8 



"= 9-8 



■i= 14-9 



a= 18-17, FG-23,SE 



c=i= 18-17 



0= 18-17 



CD = Not Sampled 



f=i= Not Sampled 



t=l = 16-11,17-1 4, FG-23, FG-9 



ra= 16-11 



E3= Not Sampled 



FG-1 1,12-0 

 CS= Not Sampled 



Figure 6-58. Results of MBDS sediment chemistry analyses 



DAMOS Summary Report, 1985-1990 



