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Eastern Leases Project

The Eastern Leases Project is a proposed open cut manganese mine located on Groote Eylandt, in the Northern Territory. The project was unique due to the cultural and spiritual significance associated with surface water features.

AGE were engaged by environmental consultants Hansen Bailey, on behalf of South32 Limited, to complete a groundwater impact assessment to form part of the project’s Environmental Impact Statement.

The groundwater impact assessment involved a field investigation program (i.e. bore installation, testing, and monitoring) and review of historic data in order to gain an in-depth understanding of the hydrogeological regime for development of the conceptual groundwater model. Based on this work, a numerical groundwater model was constructed to simulate natural groundwater processes in order to predict potential changes due to the project.

Subsequent to this project, AGE were engaged directly by South 32 Limited to supervise the drilling and installation of production bores for the purposes of water supply. The field program had a project schedule that required rapid mobilisation and 24 hour shifts. The work also included constant rate pumping tests and analysis of the results to determine yield. With AGE being one of Australia’s largest specialist groundwater consultants, we were able to provide the client with the necessary staff and support they required for this project.

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