Table 1-1 



Summary of Monitoring Surveys for the New Haven Capping Project, 

 September 1993 to March 1994 



Event 



Baseline 

 (Predisposal) 



Interim 

 Disposal 



Precap* 



Interim 

 Cap 



Interim 

 Cap + 



Postcap 



Precision 

 Bathymetry 



9/19-20/93 



10/23-25/93 



11/2-3/93 



11/23- 

 24/93 



1/12-13/94 



3/13-14/94 



REMOTS® 



Sediment 



Profile 



9/21-22/94 





11/4/93 









Sediment 

 Cores 



9/21/93 





11/10/93 







3/15/94 



Sediment 

 Grabs 





10/25/93 





11/24/93 







Vessel 



M/V 

 Beavertail 



R/V 

 UCONN 



R/V 

 UCONN 



M/V 

 Beavertail 





M/V 

 Beavertail 



This survey also included 76,000 m 3 of cap material deposited at the northeast corner of the mound. 

 + Survey conducted by Ocean Surveys Incorporated. 



data. The baseline survey included bathymetry, REMOTS®, and geotechnical cores. The 

 interim disposal survey, completed after 50% of the UDM dredged from the federal channel 

 was disposed (23-25 October 1993), included bathymetry and sediment grab samples. 



Bathymetry, REMOTS®, and geotechnical cores were collected during the precap 

 survey, performed following the completion of the federal inner harbor dredging (2-3 

 November 1993). This survey was designed to provide an accurate map of the distribution 

 of UDM to facilitate complete cap coverage. An interim capping survey was completed 

 from 23 to 24 November 1993 using bathymetry and sediment grab samples to document the 

 distribution of cap material. A final survey was conducted following the completion of all 

 dredging activities to evaluate the coverage of the UDM deposit by the outer harbor CDM. 

 This postcap survey included bathymetry and geotechnical cores and was completed from 13 

 to 15 March 1994. 



The geotechnical cores were collected by SAIC and University of Rhode Island (URI) 

 scientists in close proximity to the NHAV disposal buoy and within the central portion of the 

 dredged material mound. Results provided an estimate of consolidation within the basement 

 sediments and inner harbor dredged material. In addition, the geotechnical coring results 



Monitoring Surveys of the New Haven Capping Project, 1993-1994 



