commonly occurring in sewage sludges. Loss-on-ignition, an ashing technique, is useful for 

 the analysis of organic matter in sewage sludges not containing large amounts of hydrous 

 aluminosiUcates. 



5. GROSS, M.G., "Analysis of Dredged Waste, Fly Ash and Waste Chemicals, New York 



Metropohtan Region," Technical Report No. 7, Marine Science Research Center, 

 State University of New York, Stony Brook, Oct. 1970, 33 pp., NTIS AD No. 

 734 337. 



Chemical and physical properties were determined on wastes commonly transported by 

 barge for disposal in coastal waters offshore from New York Harbor. Dredged wastes were 

 studied by analysis of harbor sediment and wastes deposited in the "mud disposal area." 

 Chemical and physical properties of these wastes suggest that they commonly consist of 

 about 20-percent carbonaceous wastes (possibly sewage solids) mixed with low carbon 

 river-bome silt (median grain size 30 micrometers) and an unknown amount of industrial 

 wastes. Waste chemicals analyzed had a wide range of chemical composition but were not 

 adequately sampled to provide useful Umits on their chemical and physical compositions. 

 Some samples of waste chemicals had high concentrations of such metals as lead, tin, and 

 zinc. A preliminary budget of waste sohds dumped in the New York Bight indicates that 

 dredged wastes are major sources of oxygen-demanding substances and potentially 

 troublesome metals. Certain metals, especially silver and lead, and the high carbon 

 concentrations are promising as tracers in delineating distributions and subsequent 

 movement of waste deposits in the region. 



1971 



6. GROSS, M.G., et al., "Survey of Marine Waste Deposits, New York Metropolitan 



Region," Technical Report No. 8, Marine Science Research Center, State 

 University of New York, Stony Brook, Apr. 1971, 72 pp., NTIS AD No. 723 431. 



Major sources of wastes and large waste deposits in the coastal waters around the New 

 York metropolitan region were surveyed in 1970 to determine their properties. Using the 

 most diagnostic properties of the wastes, the areas covered by the various waste deposits 

 were sampled and approximate boundaries determined. Distribution of samples containing 

 anomalously high total concentrations of chromium, copper, lead, and silver was compared 

 to the distribution of carbon-rich deposits on the Continental Shelf. Assuming that 

 carbon-rich deposits are indicative of waste accumulation on the Continental Shelf, the data 

 indicate that lead and copper are the most useful elements for mapping and distribution of 

 wastes. Silver is marginally useful for determining waste distributions; total chromium 

 concentrations appear to have littie utility. Concentrations of HCl-extractable metals 

 (copper, nickel, chromium, manganese, and iron) correlated well with total elemental 

 concentiations determined by optical emission spectrochemical analyses. 



