Appropriate use of chemical information in a best professional judgment triad weight-of-evidence evaluation of sediment quality
Keywords:
toxicity, bioaccumulation, regulation, guidelinesAbstract
There is increasing support for the use of a best professional judgment, non-numeric, triad weight of evidence approach for evaluating aquatic sediment quality. This approach is based on an integrated use of sediment toxicity/source of bioaccumulatable chemicals, organism assemblages and chemical information to determine the potential for constituents in sediments to be adverse to the beneficial uses of the waterbody in which the sediments are located. This triad approach is a far more reliable approach for evaluating whether a chemical constituent(s) associated with a sediment is adverse to sediment/water quality than a chemical-specific numeric sediment quality guideline. Significant problems occur, however, with the use of this approach by some in incorporating chemical information into the triad. The use of total concentrations of constituents and/or the exceedance of a co-occurrence-based so-called ‘sediment quality guideline’ is technically invalid. Such an approach can distort the triad sediment quality evaluation because it incorporates information into the triad that is not related to the impact of the chemicals on aquatic-life-related beneficial uses. The chemical information that should be used in a triad evaluation includes the chemical forms and concentrations of the constituents of concern in the sediments that can be toxic to aquatic life or that can lead to bioaccumulation in higher-trophic-level organisms that are a threat to these organisms or those who use aquatic life as food. Sediment TIE information and information about the cause of toxicity or the amount of a bioaccumulatable chemical in a bioavailable form in the sediments should be used as a chemical component of a triad.
References
Burton, G. A. Jr., Batley, G. E., Chapman, P. M., Forbes, V. E., Smith, E. P., Reynoldson, T., Schlekat, C. E., Besten, P. J., Bailer, A. J., Green, A. S. and Dwyer, R. L. 2002. A weight-of-evidence framework for assessing sediment (or Other) contamination: Improving certainty in the decision-making process. Human Ecolog. Risk Assess., 8(7): 1675–1696.
Chapman, P. M., Power, E. A. and Burton, G. A. 1992. “Integrative assessments in aquatic ecosystems”. In Sediment Toxicity Assessment, Edited by: Burton, G. A. pp. 313–340. Chelsea, MI: Lewis Publ.
Chapman, P. M., McDonald, B. G. and Lawrence, G. S. 2002. Weight-of-Evidence Issues and Frameworks for Sediment Quality (and Other) Assessments. Human Ecolog, Risk Assess., 8(7): 1489–1515.
Jones-Lee, A. and Lee, G. F. 1998. “Evaluation monitoring as an Alternative to conventional water quality monitoring for Water quality characterization/management”. In Proc. of the NWQMC National Conference, Monitoring: Critical Foundations to Protect Our Waters, 499–512. Washington, D.C.: US Environmental Protection Agency.
Lee, G. F. October 1999. “Public Interactive peer review process for water quality technical dispute resolution: A guide For implementation of H&S code section 57004 for conducting peer review of proposed policy”. In Report of G. Fred Lee & Associates October, El Macero, CA
Lee, G. F. and Jones-Lee, A. 1993. “Sediment quality criteria: Numeric chemical vs. biological effects-based approaches”. In Proc. Water Environment Federation National Conference, Surface Water Quality & Ecology pp. 389–400. Anaheim, CA
Lee, G. F. and Jones-Lee, A. 1996. “Evaluation of the water quality significance of the chemical constituents in aquatic sediments: Coupling sediment quality evaluation results to significant water quality impacts”. In WEFTEC '96 (Water Environment Federation Technical Conference), Dallas, TX, 1996. Surface Water Quality and Ecology I & II, Proc. Water Environ. Fed. Annual Conference Vol. 4, 317–328. Dallas, TX
Lee, G. F. and Jones-Lee, A. 2002. “Appropriate use of chemical information in a best professional judgment triad weight of evidence evaluation of sediment quality”. In Report of G. Fred Lee & Associates El Macero, CA
Long, E. R., MacDonald, D. D., Smith, S. L. and Calder, F. D. 1995. Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuarine sediments. Environ. Manage., 19: 81–97.
Long, E. and MacDonald, D. D. 1998. Recommended uses of empirically derived, sediment quality guidelines for marine and estuarine ecosystems. Human Ecolog. Risk Assess., 4(5): 1019–1039.
Long, E. R. and Morgan, L. G. 1991. “The potential for biological effects of sediment-sorbed contaminants tested in the national status and trends program”. In Tech. Memo. NOS OMA52, National Oceanic and Atmospheric Administration Seattle, WA
O'Connor, T. P. 2002. “Empirical and theoretical shortcomings of sediment-quality guidelines”. In Handbook on Sediment Quality, Spec. Publ., Edited by: Whittemore, A. pp. 317–325. Alexandria, VA: Water Environment Federation. (Chair)
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