pumped as a slurry mixed with equipment, and/or offloading water through floating of material at berth/wharves to pipelines from barge to facility. containment facilities. The practical limit for pumping spoil is 7-10 km. Material will need to be Dredge vessel must be Coastal conditions will affect, Due to double handling of pumped from vessel to shore chosen with suitable draft and delay and pose risk to material, similar risks as other as per other options. manoeuvrability (many unloading and/or pumping beneficial uses, such as spills, harbours very shallow and operations of material to runoff and turbidity plumes. vessel cannot get close shore. enough to site) to approach site within suitable distance for pipelines and pumping equipment, and/or offloading of material at berth/wharves to containment facilities. Depending on type of material Dredge vessel must be Coastal conditions will affect, Spills during works, turbidity HABITAT being used, it may require chosen with suitable draft and delay and pose risk to plumes. Project not successful RESTORATION/ being pumped from vessel to manoeuvrability (many unloading and/or pumping due to wave action removing CREATION drying ponds on shore. Direct harbours very shallow and operations of material to deposited sediments.
pumped as a slurry mixed with water through floating pipelines from barge to facility. The practical limit for pumping spoil is 7-10 km. equipment, and/or offloading of material at berth/wharves to containment facilities. Material will need to be pumped from vessel to shore as per other options. Dredge vessel must be chosen with suitable draft and manoeuvrability (many harbours very shallow and vessel cannot get close enough to site) to approach site within suitable distance for pipelines and pumping equipment, and/or offloading of material at berth/wharves to containment facilities. Coastal conditions will affect, delay and pose risk to unloading and/or pumping operations of material to shore. Due to double handling of material, similar risks as other beneficial uses, such as spills, runoff and turbidity plumes. HABITAT RESTORATION/ CREATION Depending on type of material being used, it may require being pumped from vessel to drying ponds on shore. Direct Dredge vessel must be chosen with suitable draft and manoeuvrability (many harbours very shallow and Coastal conditions will affect, delay and pose risk to unloading and/or pumping operations of material to Spills during works, turbidity plumes. Project not successful due to wave action removing deposited sediments.
gbr-dredge-material-management-appendixa.docx