through, 10-day, amphipod survival test, using A. abdita. Portions of the same 20 samples were ana- 

 lyzed for only trace metals concentrations. Nine of the 20 samples were significantly toxic (Figure 2). 

 The toxic samples were collected in western Long Island Sound, upper East River, lower East River, 

 lower Passaic River, Newark Bay near Shooters Island, lower New York Harbor and the New York 

 Bight. Sediments collected near Shooters Island indicated 0.0% survival, and those from the lower 

 Passaic River 1 1.0% survival, compared to 90% survival in the controls. The concentrations of total 

 simultaneously extracted trace metals (SEM) (wmoles/g) never equalled or exceeded the concentra- 

 tions of acid volatile sulfide (wmoles/g), suggesting that trace metals had a minor role in contributing to 

 toxicity. 



Aqua Survey, Inc. (1990a, 1990b) tested intertidal and subtidal sediments from numerous locations in 

 the Arthur Kill, Kill van Kull, and Newark Bay for the Exxon Company. The sediments were tested 

 with the estuarine amphipod Eohaustorius estuarius, collected from Yaquina Bay, Oregon. Sediments 

 were held at 4°C for approximately one month before the tests were initiated. Nine to 27 samples were 

 tested from each location. No site location map accompanied the toxicity data. Also, no statistical 

 analyses of the data were performed to quantify significant differences between test sediments and 

 controls. The qualitative results are summarized in Table 3. 



Table 3. Mean percent mortality of Eohaustorius estuarius in sediments from Arthur Kill, Kill 

 van Kull, and Newark Bay (from Aqua Survey, Inc., 1990a, 1990b). 



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