Sediment quality guideline

Use of Sediment Quality Guidelines and Related Tools for the Assessment of Contaminated Sediments Wenning, Batley, Ingersoll, Moore, editors... 

To evaluate the potential risk of Ebro river sediments, the concentrations detected were compared to actual legislation. The WFD does not specifically address sediment management [95]. In contrast to this, the Canadian sediment quality guidelines for the protection of aquatic life [96] provide data for different types of sediments and include 33 compounds, PAHs and DDTs among them. All the PAHs included in the Canadian guidelines are present above the limit, ranging from 3% of the samples for naphthalene to 90% for dibenzo(a,h)anthracene. Special attention has to be paid to benzo(a)pyrene and dibenzo(a,h)anthracene, considered... 

Crane M (2003) Proposed development of sediment quality guidelines under the European water framework directive a critique. Toxicol Lett 142(3) 195-206... 

Canadian Council of Ministers of the Environment (2002) Canadian sediment quality guidelines for the protection of aquatic life. Canadian Council of Ministers of the Environment, Winnipeg... 

Alvarez-Guerra, M., Viguri, J.R., Casado-Martinez, M.C. and DelValls, T.A. (2007a). Sediment quality assessment and dredged material management in Spain Fart I, Application of sediment quality guidelines in the Bay of Santander, Int. Env. Ass. Manag., vol 3, 4, 529-538. 

Long, R.E., MacDonald, D.D., Severn, C.G. and Hong, C.B. (2000). Classifying probabilities of acute toxicity in marine sediments with empirically derived sediment quality guidelines. ET C, vol 19, no 10, 2598-2601. 

Long, R.E., Ingersoll, C.G., MacDonald, D.D. (2006). Calculation and Uses of Mean Sediment Quality Guideline Quotients A Critical Review. Environ. Sci. Technol., 2006, 40 (6), 1726-1736. 

MacDonald, D.D., IngersoU, C.G. and Berger, T.A. (2000). Development and evaluation of consensusbased sediment quality guidelines for freshwater ecosystems. Arch. Environ. Contam. Toxicol. 39, 20-31. 

This last equation forms the basis for the EPA s sediment quality guidelines that are used to assess the potential toxicity of contaminated sediments. The idea is to simply measure Cs and foe, look up K0w in a table, compute the predicted Cw, and compare this result to established water quality criteria for the protection of aquatic life or human life (e.g., carcinogenicity risk factors). The use of this simple equilibrium partitioning expression for this purpose is currently the subject of much debate among scientists as well as policy makers. 

Various sediment quality guidelines (SQGs) and benchmark values have been proposed by several states and federal agencies in the USA and other countries. However, none of these benchmarks have been adopted for widespread regulatory applications. Concentrations of TEQ in... 

Fig. 2.17. Comparison of measured levels and sediment quality guidelines (SQGs) for total polychlorinated biphenyls (PCBs) in sediments from the various sites, in South Korea (a) freshwater (n = 64), (b) brackish (n = 15), and (c) marine sediments (n = 362). Range indicates minimum (min), maximum (max), and arithmetic mean (avg.). Dotted lines represent SQGs of effect range low (ERL) and effect range median (ERM) for total PCBs (Long et al., 1995).

Swartz, R.C., 1999. Consensus sediment quality guidelines for polycyclic aromatic hydrocarbon mixtures. Environ. Toxicol. Chem. 18, 780-787. 

A comparison of the concentration of PCBs and OCPs in Singapore s coastal marine sediments with the sediment quality guideline specified by the USEPA (1997) and the Canadian Council of Ministers of the Environment (CCME, 2002) (Table 15.8), and comparison with levels of contaminants reported from other locations in Asia, Singapore s marine sediments can be classified as moderately contaminated with probable ecotoxicological impacts to marine organisms. 

Wenning, R.J. and Ingersoll, C.G. (eds.) (2002) Use of sediment quality guidelines and related tools for the assessment of contaminated sediments, Executive Summary Booklet of a SETAC Pellston Workshop, Society of Environmental Toxiclogy and Chemistry, Pensacola, FL, 48 pp. 

Figure 1. Relationship between SED-TOX scores and mean Sediment Quality Guideline (SQG) quotients. Scores varying between 0.1 and 0.9 represent a marginal hazard scores between 1.0 and 1.9 indicate a moderate hazard and scores greater or equal to 2.0 represent a high hazard potential.

As a result, the concept of toxicity classes and management categories linked to dredged-material relocation, as presented in Tables 2 and 3, are presently based on sediment porewater and elutriate testing and may have to be adjusted in the long term. Incorporation of solid-phase tests in routine test batteries should also serve to improve sediment quality guidelines and ensure better protection of aquatic ecosystems. 

Environment Canada (1995) Interim Sediment Quality Guidelines, Ecosystem Conservation Directorate, Guidelines Branch, Ottawa, ON, Canada. 

The TU approach, combined with equilibrium partitioning (EqP) and (Q)SAR modeling, was also used by Swartz and DiToro (1997) to develop the XPAII model to predict the toxicity of sediment-associated PAH compounds. A (Q)SAR and EqP method is also presented by Swartz and DiToro (1997) for modeling narcotic chemicals in sediments. In this approach, the sediment quality guideline for a mixture of narcotic chemicals that exhibit additive toxicity could be expressed as the sum of the fraction of the OC-normalized sediment concentrations divided by the SQG for each... 

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