46 



Depth Difference 

 August 1992 vs. August 1991 Bathymetry 

 Total Accumulation of Dredged Material 

 over the NL91 and Dow/Stonington Disposal Mounds 



41° 16.500 N- 



41° 16.250 N 



41° 16.000'N 



72°05.000'W 72° 04.75CW 72° 04.500^ 72°04250'W 72°04.000'W 



Buoy Positions 



NDA-91-1 26 Sept - 27 Nov 1991 

 NDA-91-2 27 Nov 1991 - 22 Jan 1992 

 NDA-91-3 22 Jan - 10 Apr 1992 

 NDA-91-4 10 Apr- 1 June 1992 



D/S 27 Nov 1991-15 Jan 1992 (missing) 



NLDS 



Mound Height in meters 



NAD 27 



m 200 m 400 m 



Figure 3-2. Bathymetric contour plot of depth differences between the June 1991 and 



August 1992 surveys in the vicinity of the Dow/Stonington mound, complete 

 with plotted positions of the 1991-1992 disposal buoys, 0.1 m contour interval, 

 depth in meters 



Monitoring Cruise at the New London Disposal Site, 1992 - 1998 



