73 



1991 vs. 1992 Depth Difference 

 1995 RPD and OSI values 



41° 16.400TM- 



41°16.300'N- 



41° 16.200'N- 



41° 16.100'N- 



41° 16.000'N- 



3.48 



300NA 



9 



2.2 



Overall A/erags ▲ 



8.0 



72° 04.600"W 72° 04.500"W 72° 04.400'W 72° 04300^ 72° 04.200^ 72° 04.100"W 



RPD 

 Station ▲ 

 OSI 



NLDS 



Mound Height in meters 



NAD 27 



m 100 m 200 m 



Figure 3-22. Spatial distribution of mean redox potential discontinuity depths over the 

 NL-91 and D/S mound complex as detected by the 1995 REMOTS® 

 sediment-profile photography survey, relative to the 1992 detectable margins 

 of the mound 



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



