LIST OF FIGURES (continued) 



Page 



Figure 3-3. Bathymetric chart of the 1600 m x 1600 m area over the NHAV 93 



mound, 0.25 m contour interval 25 



Figure 3-4. Depth difference plot of the July 1994 survey vs. the September 1993 



survey, 0.25 m contour interval 26 



Figure 3-5. Bathymetric chart of the March 1994 postcap survey, 0.25 m contour 



interval 27 



Figure 3-6. Depth difference plot of the July 1994 survey vs. the March 1994 

 postcap survey showing apparent consolidation, 0.25 m contour 

 interval displayed over July 1994 bathymetric results (0.5 m contour 

 interval) 28 



Figure 3-7. March 1994 apparent cap thickness plot overlaid onto July 1994 

 bathymetry, 0.25 m contour interval displayed over July 1994 

 bathymetric results (0.5 m contour interval) 29 



Figure 3-8. Contour plot of subbottom layer 1 (cap thickness) over the 2553 m x 



525 m analysis area, 0.5 m contour interval 31 



Figure 3-9. Contour plot of subbottom layer 1 (cap thickness; color) overlaid onto 

 total cap thickness plot of March 1994 (white) 1600 m x 525 m 

 analysis area over the NHAV 93 mound, 0.25 m contour interval 32 



Figure 3-10. Contour plot of subbottom layer 2 (dredged material thickness) 



2553 m X 525 m analysis area, 0.5 m contour interval 33 



Figure 3-11. Contour plot of total material thickness over ambient bottom, 2553 m 



X 525 m analysis area, 0.5 m contour interval 34 



Figure 3-12. Distribution of RPD and OSI values over the NHAV 93 mound, 

 overlaid on July 1994 bathymetry and detectable margins of the 

 mound : 36 



