270 



Committee by NOAA scientists in the form of a draft technical 

 paper authored by Swanson et al . dated January 5, 1982. In that 

 draft version, Swanson et al. reviewed available literature on 

 the contaminant sources to the New York Bight apex and reached 

 the following conclusions: 



"The single largest pollutant source [to the New York Bight 



apex] is the Hudson River plume 



The ocean disposal of dredged materials, sewage sludge, and 

 industrial waste represents a second major class of pollution 



inputs to the Bight 



[I]t is apparent [from the estimates prepared by Mueller et 

 al . (1976)] that for most contaminants, the proportion added to 

 the New York Bight via sewage sludge dumping is generally "^ 

 small; i.e., 1-10 percent of the total. One exception (to the 

 - 1-10 percent range) is PCBs." 



The PCB exception was based on two technical references; Bopp et 

 al. (1981) and O'Connor et al . (in press). On page 14 of the 

 Swanson et al . (January 1982) draft, the following statements 

 are found: 



"Ocean dumped sewage sludge contributes roughly 

 30 percent of the total PCB loading to the New York 

 Bight with dredged materials contributing 



approximately 70 percent (Bopp et al . 1981) 



O'Connor, et al . (in press d) also have recently 

 estimated the relative percentage contributions of 



the sources of PCBs to the Apex These figures 



indicate that ocean dumped sewage sludge contributes 

 19-26% of the PCBs; this generally agrees with Bopp' s 

 (1981) estimates. Dredged material contributes 51-61% 

 of the PCBs." 



■17- 



