REPORT DOCUMENTATION PAGE 



Form approved 

 OMB No. 0704-0188 



Public reporting concern for the collection of information is estimated to average 1 hour per response including the time for reviewing Instructions, searching existing 

 data sources, gathering and measuring the data needed and correcting and reviewing the collection of information. Send comments regarding this burden estimate or 

 any other aspect of this collection of information Including suggestions for reducing this burden to Washington Headquarters Services, Directorate for Information 

 Observations and Records, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302 and to the Office of Management and Support, Paperwork Reduction 

 Project (0704-0188), Washington, D.C. 20603. 



1 . AGENCY USE ONLY (LEAVE BLANK) 



2. REPORT DATE 



January 1996 



3. REPORT TYPE AND DATES COVERED 



Final report 



4. TITLE AND SUBTITLE 



DAMOS SUMMARY REPORT, 1 985-1 990 



5. FUNDING NUMBERS 



I6.AUTH0R(S) 



M. B. Wiley, J. Charles, C. Eller, R. Williams 



7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 



Science Applications International Corporation 

 221 Thrid Street 

 Newport, Rl 02840 



B. PERFORMING ORGANIZATION REPORT 

 NUMBER 



SAIC-91/7610&C97 



9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 



US Army Corps of Engineers-New England Division 

 424 Trapelo Road 

 Waltham, MA 02254-9149 



10. SPONSORING/ MONITORING AGENCY 

 REPORT NUMBER 



DAMOS Contribution 

 Number 109 



11. SUPPLEMENTARY NOTES 



Available from DAMOS Program Manager, Regulatory Division 

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



12a. DISTRIBUTION/AVAILABILITY STATEMENT 



Approved for public release; distribution unlimited 



12b. DISTRIBUTION CODE 



13. ABSTRACT 



Most of the material dredged from New England's waterways and harbors is deposited into nine offshore disposal sights. The 

 offshore disposal of the dredged material must be properly managed to ensure no unacceptable adverse impacts to biota in the marine 

 environment. The Disposal Area Monitoring System (DAMOS) Program provides this as well as additional tasks that contribute to the 

 overall management of the DAMOS Program. Operated by the US Army Corps of Engineers, New England Division (NED), DAMOS 

 has been in existence since 1977. The last summary of the DAMOS Program was published in 1984. This report summarizes the 

 program efforts from 1985 to 1990. 



The DAMOS Program monitors nine offshore dredged material disposal sights from the Long Island Sound to the Gulf of 

 Maine: Central Long Island Sound Disposal Sight (CLIS), Western Long Island Sound Disposal Sight (WLIS), New London Disposal 

 Sight (NLDS), Cornfield Shoals Disposal Sight (CSDS), Portland Disposal Site (PDS), Rockland Disposal Sight (RDS), Cape 

 Arundel Disposal Sight (CADS), Massachusetts Bay Disposal Sight (MBDS), Buzzards Bay Disposal Sight (BBDS) and several 

 special-use sites. In 1990 field work was conducted at CLIS, WLIS, NLDS, CSDS, MBDS, and BBDS. Additional nonfield work has 

 included verification of the DAMOS Capping Model, management of the DAMOS database, integration of the Geographic Information 

 System (GIS) with dredging and disposal site information, and the development of a tiered monitoring plan by the DAMOS Technical 

 Advisory Committee. 



Continuous monitoring of the nine dredged material disposal sites has shown that, in most cases, (1) disposal mounds are 

 stable over time, (2) there is minimal transport of material away from the sight, and (3) organisms did not take up significant levels of 

 contaminants. Stable disposal mounds with no offsite transport are found at containment sites. Eight of the nine disposal sites are 

 containment sites where material is expected to stay in the area. The only noncontainment, or dispersive, site is CSDS. At CSDS, 

 material is expected to leave the site, and it is managed as not to adversely effect the marine environment. 



Recent nonfield DAMOS efforts (Capping Model, database, GIS, and tiered monitoring) have provided a better understanding 

 of DAMOS requirements. The DAMOS Capping Model, designed to predict the size and shape of a dredged material mound, provides 

 a reliable estimate of the dredged material mound if the disposal operation is tightly controlled. Once dredged material is in place, the 

 DAMOS database, accessed through INFORMIX interface on the PC-based system, can provide information on the dredged material 

 and disposal operations. Given the ongoing generation of information by DAMOS field work, the tiered strategies developed by TAC 

 were designed to prevent significant adverse impacts on the environment by providing early warnings for such occurrences. 



Field operations at the DAMOS dredged material disposal sites, predictive modeling, tiered monitoring, and the ability to 

 extract and present data from a database combine to provide an effective management plan for dredged material disposal in New 

 England waters. This summary of the DAMOS Program from 1985 to 1990 outlines each aspect of the program and presents 

 highlights of the most recent field data 



14. SUBJECT TERMS 



DAMOS PDS MBDS 



CLIS WLIS NLDS CSDS BBDS 



15. NUMBER OF PAGES 

 117 



16. PRICE CODE 



17. SECURITY CLASSIFICATION OF REPORT 



Unclassified 



18. SECURITY CLASSIFICATION OF THIS 

 PAGE 



19. SECURITY CLASSIFICATION OF 

 ABSTRACT 



20. LIMITATION OF ABSTRACT 



