A 38 hectare rail project site in Newcastle, NSW was found to have in excess of 110,000m³ of potential acid sulfate soils. Potential acid sulfate soils have the ability to create considerable financial issues and timeline delays if disturbed and not managed appropriately.

EESI Contracting and the Centre for Contaminant Geoscience (CCG) together created and implemented a remediation plan that involved the delineation of soils and coal wash material. The contaminated material was neutralised with lime and then tested to ensure the potential acid sulfate soils had been treated.

Due to the careful management by EESI Contracting and CCG, stage 1 of remediation for this major project has been successfully completed.