REPORT DOCUMENTATION PAGE 



form a o p wu 

 OMO No. 0704-01 gg 



1. AGENCY US£ ONLT IllWf 0#*n*/ 2. REPORT OATE 



February 1991 



i. report type ano dates covered 



Final Report 



4. TTTU ANO SUBTITLE 



Buzzards Bay Disposal Site 

 Baseline Study, March 1990 



S. FUNDING NUMBERS 



fc. AUTHORS) 



7. PERFORMING ORGANIZATION NAME(S) ANO AOORESS(ES) 



Science Applications International Corporation 

 221 Third Street 

 Newport, RI 02840 



8. PERFORMING ORGANIZATION 

 REPORT NUMBER 



SAIC-90/7582 & C86 



9. SPONSORING' MONITORING AGENCY NAMEIS) ANO AQORESSUSi 



U.S. Army Corps of Engineers - New England Division 

 424 Trapelo Road 

 Waltham, MA 02254-9149 



10. SPONSORING/ MONITORING 

 AGENCY REPORT NUIU1I 



DAMOS Contribution No. 



11. SUPPLEMENTARY NOTES 



Available from DAMOS Program Manager, Regulatory Division 

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



12*. DISTRIBUTION/ AVAILABILITY STATEMENT 



Approved for public release; distribution unlimited. 



UB. DISTRIBUTION C30E 



13. ABSTRACT i/uHmimum tOQ mormi 



From 27 to 29 March 1990, field operations were conducted at the Buzzards Bay Disposal Site to provide information 

 on the effects of past disposal operations and establish baseline conditions for future monitoring. Field operations included a 

 precision bathymetric survey, REMOTS® sediment profile photography, and sediment sampling for benthic, chemical, and 

 physical analyses. 



The information obtained from the bathymetric survey and REMOTS® photos permitted the detection of two disposal 

 mounds within the surveyed area. The primary mound was central to the disposal site, 1.2 m high and 60 m wide. The other, 

 south and west of the center mound, was 1.6 m high and approximately 90 m wide. 



The major modal grain size over the surveyed area ranged from medium sand (2-1 phi) to silt-clay (>4 phi). All 

 stations containing a major mode of medium (2-1 phi) and fine (3-2 phi) sand fractions were rippled. The distribution of the 

 major modal grain size, as deduced from REMOTS® photographs, indicated a net bedload sediment transport of fine-grained 

 material to the southeast along an 11.6 m isobath. Currents are most likely the dominant force contributing to the transport. 

 The disposal site center consisted of rippled bedforms and fine sands which limited penetration by the REMOTS® camera. 



The species composition found in this study was similar to that of benthic communities in Cape Cod Bay and Boston 

 Harbor/Massachusetts Bay. Sediment chemistry and grain size analysis results indicated expected levels of percent fines, metals, 

 PAHs, PCBs, and pesticides. Currently, the surveyed area is healthy biologically and relatively uncontaminated. 



14. SUBJECT TERMS 

 Buzzards Bay 

 dredged material 

 sediments 



REMOTS 



sediment profile photography 



bathymetry 



IS. NUMBER OF PAGES 



81 



IB. PRICE COOE 



17. 



SECURITY CLASSIFICATION 

 OF REPORT 



SECURITY CLASSIFICATION | 19. 

 OF THIS PAGE 



SECURITY CLASSIFICATION 

 OF ABSTRACT 



20. LIMITATION OF ABSTRACT 



NSN /SdO-OWaO-SSOQ 



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