S? -g8 !7=cs 



QM% NO. 0704-0199 



REPORT DOCUMENTATION PAGE 



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1. AGENCY USC ONLY (IHW o/4/w; 



2. »EPORT OATI 

 November 1994 



3. REPORT TYPE ANO OATIS COVERED 

 Final report 



4. TTTU ANO subtitle 



Monitoring Cruise at the Massachusetts Bay Disposal Site, August 1990 



6. AUTHOmS) 



J. Germano, J. Parker, and J. Charles 



7. PERFORMING ORGANIZATION NAME<S) AMD AOORESS(E5) 



Science Applications International Corporation 

 221 Third Street 

 Newport, RI 02840 



9. SPONSORING/ MONITORING AGENCY NAME(S) ANO AOORESSUS) 



US Army Corps of Engineers - New England Division 

 424 Trapelo Road 

 Waltham, MA 02254-9149 



5. FUNDING NUMBERS 



I. PERFORMING ORGANIZATION 

 REPORT NUMBER 



SAIC-90/7599&C90 



10. SPONSORING/ MONITORING 

 AGENCY REPORT NUMBER 



DAMOS Contribution No. 92 



SUPPLEMENTARY NOTES 



Available from DAMOS Program Manager, Regulatory Division 

 USACE-NED, 424 Trapelo Road, Waltham, MA 02254-9149 



12*. DISTRIBUTION/ AVAILABILITY STATfMtNT 



Approved for public release; distribution unlimited. 



12b. DISTRIBUTION CODE 



1]. ABSTRACT (MtiimurrnQO worm) 



Our knowledge of the physical factors that control the deposition of dredged material suggested that, in deep 

 water, most deposits will cover a relatively large area with only minor vertical relief. From this argument and barge log 

 volume calculations, it was presumed that material disposed in MBDS at the "MDA" buoy since November 1988 would 

 not provide a vertical signature large enough to be observed with precision bathymetric equipment This study, 

 conducted from 13 to 17 August 1990, set out to test the supposition through bathymetric and REMOTS surveys. Since 

 the last survey in November 1 988, an estimated 260,300 m3 of dredged materia] had been deposited at this site. The 

 thickness and extent of dredged material surrounding the "MDA" disposal buoy were mapped and compared to data 

 collected in 1988 and 1987. Against expectation, the bathymetric survey did indeed detect a mound measuring 0.8 m in 

 height and 420 m in diameter, when the 1990 survey was compared to 1988. 



When compared to previous bathymetric data collected over the same area from 1987, the dredged material had 

 formed a mound 1 m high and 450 m in diameter. This demonstrated the successful formation of a well-defined dredged 

 material mound at MBDS. 



mbYF 7ERMS 



dredged material 

 sediments 



bathymetry 



REMOTS 



sediment profile photography 



IS. NUMBER OF PAGES 



51 



16. PRICE CODE 



SECURITY CLASSIFICATION 

 OF REPORT 



Unclassified 



18. SECURITY CLASSIFICATION 

 OP THIS PAGE 



SECURITY CLASSIFICATION 

 OP ABSTRACT 



20. LIMITATION OF ABSTRACT 



NSN 7540-01 -280-5500 



itanaara Form 298 (R»v 2-89) 

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