Acid sulfate soil is the common name for soils that contain metal sulfides. In an undisturbed and waterlogged state, these soils may pose no or low risk. However, when disturbed or exposed to oxygen, acid sulfate soils undergo a chemical reaction known as oxidation. Oxidation produces sulfuric acid which has led to these soils being called acid sulfate soils.Coastal acid sulfate soils occur naturally around Australia's coastline. These soils were formed and deposited in areas that are, or once were, coastal environments.The effects of acid sulfate soils on the environment can be avoided or minimised with appropriate assessment and management.Geoaquitards Environmental provides acid sulfate soil assessment and environmental management plans to meet the EPA requirements.