Using a triad approach in the assessment of hazardous waste site leaching from a superfund site to an adjacent stream

摘要

A triad approach was used in the evaluation of sediment in the Wolf River adjacent to the North Hollywood Dump, a federally listed superfund site. Chemical analyses were done for 18 organochlorine pesticides, 21 polychlorianted biphenyl (PCB) congeners, and 10 metals. Sediment toxicity was evaluated with freshwater invertebrates, Chironomus tentans and Hyalella aztecz. Benthic macroinvertebrate diversity and abundance were assessed with a family-level biotic index. Mean Al, Ba, Cd, Cu, Fe, Ni, Pb, and Zn concentrations were significantly higher in sediments collected in the spring.