Port of Devonport Maintenance Dredging & Environmental Approvals | Australia

CONTEXT

TasPorts supports critical marine services and infrastructure across Tasmania. Periodic maintenance dredging is required at the Port of Devonport to maintain navigable depths and support the safe and reliable operation of the port.

CUSTOMER CHALLENGE

How do you establish a long-term environmental approvals framework for maintenance dredging while balancing environmental protection, regulatory requirements and operational needs?

TasPorts required a long-term approvals and environmental management framework for repeat maintenance dredging and offshore placement of dredged material. The programme needed to address sediment quality, turbidity, sensitive receptors, introduced marine species and regulatory requirements, while establishing practical controls and monitoring arrangements for delivery.

OUR SOLUTION

BMT provided embedded environmental and project support from planning through delivery. This included sediment investigations, marine habitat and introduced marine species surveys, dredge plume modelling and impact assessment, environmental management planning, sea dumping permit support and regulator engagement, together with compliance monitoring, adaptive management and post-dredge reporting.

• Environmental impact assessment
• Biodiversity assessments
• Dredging
• Regulatory approvals
• Regulatory compliance
• Environmental monitoring

OUTCOME

The work secured a 10-year sea dumping permit and environmental management framework for maintenance dredging at the Port of Devonport and supported delivery of the 2026 campaign through transparent monitoring, documented compliance and evidence-based adaptive management. TasPorts now has a repeatable approach for future campaigns that supports safe navigation, environmental protection and regulatory confidence.

Questions We Helped Answer

EVALUATE

• What environmental and regulatory risks must be addressed before repeat maintenance dredging can proceed?
• What monitoring and assessment activities are required to support long-term approvals?
• How can sediment quality, turbidity and sensitive marine receptors be effectively managed?

DECIDE

• What approvals framework will support future dredging campaigns?
• What environmental controls and adaptive management measures should be implemented?
• How should environmental monitoring be incorporated into ongoing dredging operations?

DELIVER

• How can compliance be effectively monitored and demonstrated during dredging campaigns?
• How should monitoring results be used to support adaptive management responses?
• How can future maintenance dredging campaigns be delivered consistently and efficiently?