and clay content. nourishing with additional sand. Material not amenity. Material not suitable. NOURISHMENT suitable and would cause negative impacts on beaches. CONSTRUCTION Material with high sand content Land highly constrained due to Clearing of land for unloading It is not technically feasible to MATERIAL most suitable. Dredged rock is not environmental values and surrounding and loading facilities may pump the dredge material suitable as construction material as residential / commercial use. May be displace species from area. km to shore (Pronk 2012). too weathered. Previous studies existing available areas for storage of rock Use of areas within Tug have found other material (clay, silts material Tug Harbour. Land needs to have Harbour most suitable. and sands) not suitable for low slope and stable topography. construction fill purposes. Rock material will not require any treatment. PARKS and The material may be suitable for Flat land required for drying areas. Most of Significant impacts on No facilities in place currently. RECREATION parks and recreational purposes, the land at Hay Point and Dudgeon Point is terrestrial environmental Drying areas, loading and but would need to be dried out first. constrained due to environmental values values to clear sufficient land unloading machinery, road Its salt content may limit its use as and existing or proposed uses. to dry material prior to access required. Large material for revegetation purposes. dredging. Ongoing amounts of rehandling and The material is not contaminated discharges of waste water truck movements. It is not and would not need further during works as part of the de technically feasible to pump processing other than some liming watering process. the dredge material 12-14 km to reduce minor ASS levels as to shore (Pronk 2012). determined by testing. The material is not suitable due to Drying ponds required. Most of the land at Significant impacts on The potential to use dredged its salt content. Mackay region Hay Point and Dudgeon Point is constrained terrestrial environmental materials from marine areas
NOURISHMENT and clay content. nourishing with additional sand. Material not suitable and would cause negative impacts on beaches. amenity. Material not suitable. CONSTRUCTION MATERIAL Material with high sand content most suitable. Dredged rock is not suitable as construction material as too weathered. Previous studies have found other material (clay, silts and sands) not suitable for construction fill purposes. Rock material will not require any treatment. Land highly constrained due to environmental values and surrounding residential / commercial use. May be existing available areas for storage of rock material Tug Harbour. Land needs to have low slope and stable topography. Clearing of land for unloading and loading facilities may displace species from area. Use of areas within Tug Harbour most suitable. It is not technically feasible to pump the dredge material km to shore (Pronk 2012). PARKS and RECREATION The material may be suitable for parks and recreational purposes, but would need to be dried out first. Its salt content may limit its use as material for revegetation purposes. The material is not contaminated and would not need further processing other than some liming to reduce minor ASS levels as determined by testing. Flat land required for drying areas. Most of the land at Hay Point and Dudgeon Point is constrained due to environmental values and existing or proposed uses. Significant impacts on terrestrial environmental values to clear sufficient land to dry material prior to dredging. Ongoing discharges of waste water during works as part of the de watering process. No facilities in place currently. Drying areas, loading and unloading machinery, road access required. Large amounts of rehandling and truck movements. It is not technically feasible to pump the dredge material 12-14 km to shore (Pronk 2012). The material is not suitable due to its salt content. Mackay region Drying ponds required. Most of the land at Hay Point and Dudgeon Point is constrained Significant impacts on terrestrial environmental The potential to use dredged materials from marine areas
gbr-dredge-material-management-appendixa.docx