LIST OF FIGURES 



Page 



Figure 1-1. Location of Portland Disposal Site and NOAA buoy 44007 in the 



Gulf of Maine east of Cape Elizabeth 2 



Figure 1-2. Bathymetric chart (in meters relative to MLLW) of the southern 

 half of the Portland Disposal Site as determined from a survey 

 conducted in February 1996 by SAIC 4 



Figure 2-1. Locations of moored array deployments within the southwestern 



corner of the Portland Disposal Site during spring of 1996 7 



Figure 2-2. Schematic diagram of the moored instrument array used to acquire 

 near-bottom measurements of horizontal currents, water 

 temperature, and relative turbidity (at heights of 33 and 81 cm 

 above the seafloor) within the Portland Disposal Site during spring 

 of 1996 10 



Figure 2-3. Plot illustrating the results of the laboratory calibration to 



determine the correlation between relative turbidity (in NTUs) 

 measured by the Seapoint turbidity sensor versus suspended solids 

 concentrations (in mg-i" 1 ) determined by laboratory procedures 12 



Figure 3-la. Vertical profiles of temperature, salinity, and density (sigma-t) 



acquired at the Portland Disposal Site on February 27, 1996 15 



Figure 3-lb. Vertical profiles of temperature, salinity, and density (sigma-t) 



acquired at the Portland Disposal Site on April 22, 1996 16 



Figure 3-lc. Vertical profiles of temperature, salinity, and density (sigma-t) 



acquired at the Portland Disposal Site on May 14, 1996 18 



Figure 3-2. Temperature/salinity characteristics of the three vertical profiles 



(see Figures 3-la through c) acquired at the Portland Disposal Site 

 during spring of 1996 19 



Figure 3-3a. Time series plot of meteorological and wave data from NOAA 



buoy 44007 during the period from January 1993 to January 1994 21 



