Involves large amounts of rehandling and truck movements. Material suitable for permanent Large areas of flat land highly constrained. High due to loss of habitat. It is not technically feasible to NON-BENEFICIAL disposal. May need ASS treatment. Permanent loss of area, no pump the dredge material DISPOSAL future use for land. km to shore. Construction (permanent of ponds, facilities and road disposal in access required. constructed retention pond) Port of Abbot Point Sediments of Abbot Point are There are some areas available for Sandy beaches are present Sediments could be pumped RECLAMATION generally composed of fine to reclamation within pumping distance of on the eastern side of Abbot from dredge to reclamation (sub-tidal creation medium sands with varying degrees dredging areas. Available land is quite Point. The sandy nature of area. Dewatering would be of land) of silt and some clay. Material with a undulating. Flat land tends to have high sediments would mean that required within the reclamation high content of sand may be environmental values (wetlands and dune water quality impacts of area, with discharge of waste suitable for reclamation. Sediments vegetation). There is an area to the left of reclamation could be water. are uncontaminated and generally the trestle that has been previously identified managed, provided silt and have a low acid potential, which can for land reclamation for a multi cargo facility clay content was relatively be managed through treatment or (MCF). Apart from the MCF area, other low. Loss of intertidal and sub remaining saturated as required. areas within the port are highly constrained tidal habitat. Some temporary due to high conservation value (beaches, impacts to local water quality conditions and possibly
Involves large amounts of rehandling and truck movements. NON-BENEFICIAL DISPOSAL (permanent disposal in constructed retention pond) Material suitable for permanent disposal. May need ASS treatment. Large areas of flat land highly constrained. High due to loss of habitat. Permanent loss of area, no future use for land. It is not technically feasible to pump the dredge material km to shore. Construction of ponds, facilities and road access required. Port of Abbot Point RECLAMATION (sub-tidal creation of land) Sediments of Abbot Point are generally composed of fine to medium sands with varying degrees of silt and some clay. Material with a high content of sand may be suitable for reclamation. Sediments are uncontaminated and generally have a low acid potential, which can be managed through treatment or remaining saturated as required. There are some areas available for reclamation within pumping distance of dredging areas. Available land is quite undulating. Flat land tends to have high environmental values (wetlands and dune vegetation). There is an area to the left of the trestle that has been previously identified for land reclamation for a multi cargo facility (MCF). Apart from the MCF area, other areas within the port are highly constrained due to high conservation value (beaches, Sandy beaches are present on the eastern side of Abbot Point. The sandy nature of sediments would mean that water quality impacts of reclamation could be managed, provided silt and clay content was relatively low. Loss of intertidal and sub tidal habitat. Some temporary impacts to local water quality conditions and possibly Sediments could be pumped from dredge to reclamation area. Dewatering would be required within the reclamation area, with discharge of waste water.
gbr-dredge-material-management-appendixa.docx