LIST OF FIGURES 



Page 



Figure 1-1 . Boston Harbor Navigation Improvement Project location of main 



channels to be dredged 2 



Figure 1-2. Proposed location of in-channel confined aquatic disposal cells 3 



Figure 1 -3 . Location map of Phase 1 confined aquatic disposal cell 5 



Figure 1-4. Bathymetry of cell area following excavation, prior to disposal 



(Weeks Marine, NAD83) 6 



Figure 3-1 . Side-scan sonar image of surface of cell 16 



Figure 3-2. Bathymetry of cell area after completion of capping in a) July 



(Weeks Marine); and b) October 1997 (SAIC; NAD83) 18 



Figure 3-3. 3D view of postcap cell bathymetry in a) July (Weeks Marine); 

 and b) October 1997 (SAIC); view towards the southern end of 

 the cell 20 



Figure 3-4. Postcap bathymetry of cell collected in October 1997 (NAD83) 



showing locations of cores and three cross sections 21 



Figure 3-5. Bathymetric transects along north-south lanes 6 and 7 



(see Figure 3-4) 22 



Figure 3-6. Photographs of selected cores, scale in cm 24 



Figure 3-7 Subbottom profile of Lane 5 (see Figure 3-4) 26 



Figure 3-8 Subbottom profile of Lane 7 (see Figure 3-4) 28 



Figure 3-9 Video image of sand cap showing presence of tunicates and other 



debris 30 



Figure 3-10 Video image of Boston Blue Clay cell wall 31 



