Acid Sulphate Studies

What are Acid Sulfate Soils?

Acid sulfate soils (ASS) are natural sediments containing iron sulfides, commong along coastal areas underlying coastal estuaries and floodplains and some inland river systems. When disturbed or exposed to air these soils can release acid, damaging built structures and harming or killing animals and plants.

Impacts

Left undisturbed, acid sulfate soils do not present any risk. However, when they are exposed to air, the iron sulfides they contain react with oxygen to create sulfuric acid. The acid makes metals in the soil, such as iron and aluminium, more soluble. These metals can be released in toxic amounts.The acid and released metals can have many damaging effects.

Investigation and Management

Asset has carried out numerous acid sulfate soil investigations, and has prepared acid sulfate soil management plans where required, in accordance with Local Council and State Government requirements.

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