The Mt Arthur Coal Mine is an open-cut coal mine located approximately 6 km south-west of Muswellbrook, in New South Wales. The project occurs within the Sydney Basin and targets the Wittingham Coal Measures. AGE have enjoyed a long term relationship with Mt Arthur Mine assisting with various groundwater related issues and assessments. This includes a groundwater impact assessment for Resource Strategies, on behalf of Hunter Valley Energy Coal Pty Ltd. In addition, AGE have been engaged directly by Mt Arthur Coal to plan and implement an upgrade to the existing groundwater monitoring network. This includes vibrating wire piezometer and monitoring bore installation, hydraulic testing and bore remediation works. AGE have also completed routine reporting to address conditions of mine approval, this includes annual groundwater reviews and trigger investigations.