Astron was engaged to plan and manage the rehabilitation of land areas for an offshore island facility to ensure the client successfully met relinquishment obligations. The scope included setting quantitative targets for completion criteria, investigating gaps of information and outlining the rehabilitation design and implementation strategy for the life of the project.
A structured risk management approach was adopted to manage project risks and investigate information gaps. Astron conducted digital surface modelling, derived from an unmanned aerial vehicle (UAV) survey, to determine the adjacent landform features the landform design should conform. A shoreline survey was conducted to identify the natural range of coastal changes to ensure landform stability targets were reasonable given the geographic location of the site. Nursery and revegetation trials were conducted to provide a low risk strategy towards achieving species richness targets.
A rehabilitation management plan was delivered to meet the expectations of stakeholders and regulatory bodies. The overall strategy and approach allowed for emerging issues to be investigated and changes in environmental risk or business conditions to be managed.