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Venice industrial harbour acquifer simulation (italy)
MODELLING THE HYDROGEOLOGICAL IMPACT OF A CONTAINMENT CUT-OFF WALL IN THE VENICE INDUSTRIAL HARBOUR OF PORTO MARGHERA – ITALY
Project: Study of groundwater dynamics related to containment cut-off wall construction in the Venice industrial harbour of Porto Marghera - Italy
Location: Venice, Italy
Client: Venezia Nuova Consortium for Italian Ministry of Public Works – Water Board, Venice
Services: Mathematical Model Studies; Preliminary, Final and Detailed designs
A major source of non biodegradable organic and inorganic pollutants is represented by Porto Marghera, a port and petrochemical complex on the central-west side of the Venice lagoon. Porto Marghera is classified as "Site of National Interest" (SIN). Within the general project of decontamination activities called MISE, the Italian Ministry of Environment asked the Italian Water Authority (Magistrato alle Acque MAV) to limit the water exchange between the contaminated soils and the lagoon waters within the SIN. MAV has planned construction of a continuous 56.8 km long cut-off wall made of steel sheet piles along the entire harbour channel banks. The diaphragms are driven into the lagoon bottom down to a depth ranging between 15 and 25 m below sea level. Since such a cut-off wall constitutes an impermeable barrier to groundwater flow from the mainland toward the lagoon a study has been commissioned to Technital on expected impact of the cut-off wall on the natural flow regime of the shallowest aquifers.