117 



Depth Difference 

 September 1997 versus July 1986 Master Bathymetric Survey 



41° 16.750' N" 



Depth Difference 

 Due To Survey 

 Artifacts 



41° 16.500' N 



41 ° 16.250' N - 



41° 16.000' N - 



41° 15.750' N- 



NDA91-2 

 NDA98^m DA96 £ 



N ^ 97 w NDA91 - 1 x, 



0^(^^0^86-88 

 » . ^L»£uoy85 



NDA92-1** NDA93 



CD o 



o 



2 



USCG NL 



/o, ♦ 



" ^OY 



^2l 



72° 05.250' W 



■— i 1 1 



72° 04.750' W 72° 04.250' W 



NLDS 



Difference in meters 

 NAD 83 



m 400 m 



800 m 



Figure 3-50. Depth difference between the 1986 and 1997 master bathymetric surveys 



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



