could generally be managed during construction. Environmental benefits would need to be high to outweigh impacts (e.g. provide habitat for threatened species). No guarantee of successful use by birds. LANDFILL (capping Sediments are of a suitable grain Highly constrained due to lack of available Sediments would first need to No existing dewatering, drying and blending for size and quality for capping areas for drying sites. be dewatered and dried or storage areas for treatment beneficial use) purposes. Non contaminated and somewhere close to the of dredged material. Loading suitable for in landfill capping. harbour. The only flat land and unloading facilities at where this could happen is a drying site and landfill site. salt marsh/clay pan Local roads would need environment 2 km to the upgrading to handle high loads south of the harbour, which of heavy vehicles. has high environmental values. Pumping of material across the salt marsh, loss of habitat, displacement of species, smothering of benthic habitat. Upgrade of local roads would also be required and may impact on terrestrial environmental values if clearing was
could generally be managed during construction. Environmental benefits would need to be high to outweigh impacts (e.g. provide habitat for threatened species). No guarantee of successful use by birds. LANDFILL (capping and blending for beneficial use) Sediments are of a suitable grain size and quality for capping purposes. Non contaminated and suitable for in landfill capping. Highly constrained due to lack of available areas for drying sites. Sediments would first need to be dewatered and dried somewhere close to the harbour. The only flat land where this could happen is a salt marsh/clay pan environment 2 km to the south of the harbour, which has high environmental values. Pumping of material across the salt marsh, loss of habitat, displacement of species, smothering of benthic habitat. Upgrade of local roads would also be required and may impact on terrestrial environmental values if clearing was No existing dewatering, drying or storage areas for treatment of dredged material. Loading and unloading facilities at drying site and landfill site. Local roads would need upgrading to handle high loads of heavy vehicles.
gbr-dredge-material-management-appendixa.docx