







































n Fresh water.the. 







Relative Abundance of 



DMarsh.ag. 







Microfossils 



DMudflatxal. 





in 



Grab Samples for UDM Survey 



□ Shelf.ag. 

 ashelf.cal 















1 UU /o " 





























— 

















90% 



- 



































- 









a, 80% 



- 











































i 70% 



- 







































— 





1 60% 





























— 

















3 















































5 50% 



- 















— 





























« 40% 



- 













































B 30% - 



- 



















_ 

























(S 20% 



- 







w 





















_ 

















10% - 



- 







p 





















8 













m 





0% J 









#, 









- 





==^ 









# 





-fs~--- 





■m 





^ 



- 







lU 



u.2iiiu]q:u)>>& I 



lU 



2 

 o 



50NE 



50 



50EN 



50S 



CT 



50 



50S\ 



50\ 



50N\ 





1 



B 



600 



450 

 S 



o 



u 300 



150 



Grab Samples - No. of Microfossils per Gram 



EDThecamJgram 

 nForamVgram 



d l.ifi:^ 



Figure 4-20c Histograms showing relative abimdance and density of microfossils collected 

 within the ten processed grab samples (methanol [ME] and formalin [F] at 

 50NE only) 



The Portland Disposal Site Capping Demonstration Project, 1995-1997 



