21 



Boundary Roughness 



2 3 4 5 



6 7 8 9 10 11 



25 









20 



Key 









Class 



Range of 







Interval 



Values (cm) 





15 



1 



0.0 - 0.6 



c 





2 



0.6- 1.0 



a 





3 



1.0- 1.4 



&■ 





4 



1.4- 1.8 



1 





5 



1.8-2.2 



10 



6 



2.2 - 2.6 







7 



2.6 - 3.0 







8 



3.0-3.4 







9 



3.4-3.8 







10 



3.8-4.2 





5 



11 



4.2-4.6 





NLON Reference Areas 

 N = 29 



12 3 4 5 6 7 



9 10 11 



Figure 3-9. Frequency distribution of mean boundary roughness values at the pooled 

 disposal site and reference stations 



Monitoring Cruise at the Neu> London Disposal Site, June 1991 



