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Côtes méditerranéennes menacées :
Risques et défis dans le contexte du changement climatique

sediment management option to be use in the area will be published soon by
CAPPUCCI et al. (in press).

2. Materials and methods
Based on the complexity of sediments management and the necessity to guarantee
periodical dredging, a simple and straightforward method was implemented by
developing the following three steps: (1) implementation of the conceptual model; (2)
superficial sediments sampling; (3) laboratory analysis.

Figure 1. Egadi archipelago and Favignana Harbour. Coloured arrows show sources
of contamination (see Fig. 3 for details).

2.1 Implementation of conceptual model
Since marine sediments are potential targets of intentional or accidental contamination,
a detailed conceptual model has been implemented (BORTONE & PALUMBO, 2007;
IMO, 2000). Four main contamination sources were identified around the harbour basin
(Fig. 1; EPA, 2005). For each of the potential sources of contamination, the transfer
model and the final targets have been identified (MUNASINGHI, 1998). For each
source, a schematic table describes the route of transfer and the following information:
(1) Name of the company; (2) Site and type of business/production; (3) Description of
the area; (4) Description hydrogeological; (5) Type of pollutants (current and previous
activities); (6) Conceptual Model (sources, transfer and targets); (7) Results of available
preliminary analysis of soils, land, groundwater, marine waters.

2.2 Sediment characterization
In the present work a deterministic strategy (MAFFIOTTI & BONA, 1997) was chosen,
which provides the positioning of sampling stations in areas where accumulation of
pollutants takes place. Four sampling stations were chosen near the dock in front of
Piazzale Marina (Fig. 2), which is the first barrier hindering the deposition of coastal

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