369 



---•< af'"r'ip"'''caT work, particularly the effort on cation pxrhanqo 

 ;.«?■«: -'tv. w^ii contr-^hute to understanding of the potential for 

 ^-•";- = Mr>n pf - ad ^' duc 1 i de s released into the deep marine environment, 

 ..-p^p .-ari'onuc ■ ide retention by the sediments is anticipated. The 

 ■^.r■^a^r^ c' <;ed-ments at the site and characteristics of sediment 

 ^erns't-O" a-e also of interest; the report indicates the source as the 

 cnnf'^p-ta'' shelf and the Hudson Canyon adjacent to the dumpsite. 



:&' Bcwen, Vauqhan T., and Linda Graham, "lP7fi Site-Specific Survey 

 of the Atlantic 2800 Meter Oeepwater Radioactive Waste 

 Dumpsite: Radiochemistry", May 1Q7(?. 



"^his report presents the data on levels of radioactivity found in 

 sediment cores obtained at the 2800 meter site adjacent to a radioactive 

 waste container and in various areas of the disposal site. Cesium-137, 

 p1utonium-23P,?40, and americium-?41 in some sediment cores were found 

 to be above the expected range for weapons testing fallout in sediment 

 for this latitude and depth. In addition, iron-55 and cobalt-60 were 

 also found in sediment cores and are believed to have originated from 

 the waste containers. 



(5) Colombo, P., R.M. Nelson, Jr., and M.W. Kendig, "Analysis and 

 Evaluation of a Radioactive Waste Package Retrieved from the 

 Atlantic 2800 Meter Disposal Site," September 1978. 



This published report presents the results of analyses performed by 

 Brookhaven National, Laboratory on the first radioactive waste container 

 recovered from a waste disposal site. It was retrieved by EPA for the 

 purpose of container corrosion and matrix degradation analysis for the 

 2800 meter depth Atlantic radioactive waste disposal site. 



Analyses in the report indicate that the container had withstood the 

 rigors of the deep ocean environment. The authors estimate that a 

 minimum of 100 years in the deep ocean environment would be required 

 before the concrete waste form would lose its integrity. 



(6) Dayal, R., S.A. Oakely, and I.W. Duedall, "Sediment Geochemical 

 Studies of the 2800 Meter Atlantic Nuclear Waste Disposal 

 Site", June 30, 1978. 



This report analyzes and discusses the physical and chemical 

 properties of the sediments collected at the 2800 meter site. These 

 parameters influence the amount of binding of radionuclides to the 

 sediment. Cs-137 and Cs-134 were found to have been released from a 

 radioactive waste container, but the sediments were determined to be an 

 effective barrier to migration. It was found in this study that 

 bioturbation (the reworking of sediments by organisms) can actively 

 redistribute radionuclides vertically in the sediment column. Pore 

 water migration, in comparision, was negligible. 



12 



