Environmental Considerations Impacts on/risks to Topography of area Carbon footprint Impacts on environmental values on impacts (i.e. slope/gradient recreational and and stability of commercial users of disposal site) the area Permanent loss of sub Noise from vessels, Low slope and stable Carbon emissions from Loss of land for LAND RECLAMATION tidal habitat. Saline and pumps, heavy site required for material transport, recreation purposes, (sub-tidal creation of turbid tail water equipment. containment of material. pumping, construction loss of coastal area, land) discharge. Spills during Slopes < 2 per cent emissions. certain areas filling operations. preferable. Slopes > 5 inaccessible to the Alteration of per cent unsuitable. public. Depending on bathymetry, coastline, end goal of land use, coastal dynamics. Bund reclamation may create leakage/failure. more usable space for recreation purposes. Long-term or Aesthetic impact on Low slope and stable Carbon emissions from Permanent loss of land CONSTRUCTION FILL permanent loss of surrounding site required for material transport, for drying sites. (supra-tidal) habitat at drying sites. environment from large containment of material. pumping, construction. Saline and turbid tail drying sites and Slopes < 2 per cent Emissions increased by water discharge. Spills processing facilities. preferable. Slopes > 5 multiple handling and during transport to Noise, dust and water per cent unsuitable. land transport of drying site. Surface pollution. Other issues material. runoff and leaching common to any after placement at construction fill project. disposal site.
on Environmental Considerations Impacts on/risks to environmental values impacts Topography of area (i.e. slope/gradient and stability of disposal site) Carbon footprint Impacts on recreational and commercial users of the area LAND RECLAMATION (sub-tidal creation of land) Permanent loss of sub tidal habitat. Saline and turbid tail water discharge. Spills during filling operations. Alteration of bathymetry, coastline, coastal dynamics. Bund leakage/failure. Noise from vessels, pumps, heavy equipment. Low slope and stable site required for containment of material. Slopes < 2 per cent preferable. Slopes > 5 per cent unsuitable. Carbon emissions from material transport, pumping, construction emissions. Loss of land for recreation purposes, loss of coastal area, certain areas inaccessible to the public. Depending on end goal of land use, reclamation may create more usable space for recreation purposes. CONSTRUCTION FILL (supra-tidal) Long-term or permanent loss of habitat at drying sites. Saline and turbid tail water discharge. Spills during transport to drying site. Surface runoff and leaching after placement at disposal site. Aesthetic impact on surrounding environment from large drying sites and processing facilities. Noise, dust and water pollution. Other issues common to any construction fill project. Low slope and stable site required for containment of material. Slopes < 2 per cent preferable. Slopes > 5 per cent unsuitable. Carbon emissions from material transport, pumping, construction. Emissions increased by multiple handling and land transport of material. Permanent loss of land for drying sites.
gbr-dredge-material-management-appendixa.docx