Table 35. Average concentrations of total extractable and AVS simultaneously extracted trace 

 metals (ppm, dry wt.) in highly toxic (<80% survival) and nontoxic samples from Phase 2, ratios 

 between the averages, and ratios between the highly toxic averages and the respective SQGs. 



a Long et al. (1995) 



na = no applicable guidelines 



The concentrations of the classes of PAHs and three individual hydrocarbons were higher in the toxic 

 samples than in the nontoxic samples, but not to a great degree (Table 36). Also, the average concen- 

 trations of the sums of both the low and high molecular weight compounds exceeded the respective 

 ERM values, but again, not by a large amount. Among the three compounds for which there are 

 proposed criteria, phenanthrene was most elevated in concentration in the toxic samples, but the aver- 

 age concentrations of all three compounds were considerably lower than the respective SQGs. 



110 



