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    Author(s): James M. Lazorchak; Michael B. Griffith; Marc Mills; Joseph Schubauer-Berigan; Frank McCormick; Richard Brenner; Craig Zeller
    Date: 2015
    Source: Environmental Toxicology and Chemistry. 34(6): 1277-1282.
    Publication Series: Scientific Journal (JRNL)
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (672.0 KB)


    The US Environmental Protection Agency (USEPA) develops methods and tools for evaluating risk management strategies for sediments contaminated with polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and other legacy pollutants. Monitored natural recovery is a risk management alternative that relies on existing physical, chemical, and biological processes to contain, destroy, and/or reduce the bioavailability or toxicity of in-place contaminants. These naturally occurring processes are monitored to ensure that management and recovery are progressing as expected. One approach frequently used to evaluate the recovery of contaminated sediments and associated biota is the assessment of contaminant tissue levels, or body burden concentrations, in top trophic level fish. In the present study, aquatic invertebrates were examined as an indicator of recent exposure to PCBs. The approach aimed to determine whether invertebrates collected using artificial substrates (i.e., Hester–Dendy samplers) could be used to discriminate among contaminated sites through the analyses of PCBs in whole homogenates of macroinvertebrates. Macroinvertebrates were sorted, preserved, and analyzed for total PCBs (t-PCBs), by summing 107 PCB congeners. Macroinvertebrate body burden concentrations showed similar trends to sediment t-PCB concentrations at the sites sampled. The results indicate that macroinvertebrates can be used to assess sediment contamination among sites that have different PCB contamination levels.

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    Lazorchak, James M.; Griffith, Michael B.; Mills, Marc; Schubauer-Berigan, Joseph; McCormick, Frank; Brenner, Richard; Zeller, Craig. 2015. Proof of concept for the use of macroinvertebrates as indicators of polychlorinated biphenyls (PCB) contamination in Lake Hartwell. Environmental Toxicology and Chemistry. 34(6): 1277-1282.


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    monitored natural recovery, body burden, macroinvertebrates, polychlorinated biphenyls remediation, contaminated sediments

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