129 



were ISO and 229 pptr and the average concentration was 24.1 (dry weight). The 

 animals feeding at the Mud Dump Site can be expected to take up and 

 concentrate dioxin in their tissues by as much as many thousands of times. 



o Dioxin was measured in worms at all stations sampled. The 

 average level was 27 pptr (dry weight). This corresponds to about 5 pptr wet 

 weight. Higher concentrations were found along the eastern boundary, the 

 northern boundary and the southern boundary. Outside the Mud Dump Site, at 

 stations north and west tissue concentrations were also above average. Of all 

 compounds measured, dioxin was found to have greatest tendency to 

 bioaccumulate. after silver. 



o High concentrations of total PCB aroclors were found to the south 

 and west of the Mud Dump Site (1538. 108 1 and 879 ppb, dry weight). Total 

 PCB congeners ranged from 3.9 to 769.9 ppb at stations throughout the Mud 

 Dump Site. The average total PCB congener concentration was 59.6 ppb, not 

 counting the maximum concentration measured. A previous survey of 

 contaminants in the New York Bight Apex found PCBs to be less than 1 ppb 

 beyond the Mud Dump Site and the old sewage sludge disposal site 9 , whereas at 

 those sites, concentrations ranged from 10 to 150 ppb. 



o Again, eastern and southern margins of the Mud Dump Site had 

 the highest concentrations of polycyclic aromatic hydrocarbons (PAHs); maximum 

 concentrations of individual compounds were 1000-6000 ppb. 



ii. Additional monitoring is scant 



The only additional monitoring, that we are aware of.that has occurred in 

 the vicinity of the Mud Dump Site has been a contaminant survey of sediments 

 and several marine species throughout the New York Bight and Long Island 

 Sound 10 , a study of dioxin in aquatic animals and sediments conducted in 1983" 

 and a study of PCBs, chlordane and DDTs in fish and shellfish from New Jersey 



' Robert N. Reid et al. September 1982. Contaminants in New York. Bight 

 and Long Island sound Sediments and Demersal Species, and Contaminant Effects 

 on Benthos. Summer 19X0 . Woods Hole. MA. 



10 Ibid 



"NJDEPE. October 1985. A Studv of Dioxin in Aquatic Animals and 

 Sediments. Trenton. NJ. 



