Acid Sulfate Soil Assessments

What are Acid Sulfate Soils?

Acid Sulfate Soils (ASS) refer to naturally existing soil and sediment that contain iron sulphides (pyrites). Disturbance or exposure of these natural sulphides to air triggers oxidation, resulting in the production of sulfuric acid, leading to infrastructure corrosion, water contamination and can potentially affect subsurface elements such as foundations and footings.  In NSW, Acid Sulfate Soils are most prevalent in coastal and estuarine areas.

Acid Sulfate Soils are classified into two types:

Potential Acid Sulfate Soils:

Potential Acid Sulfate Soils (PASS) are soils containing sulfidic ores that have not yet reacted after coming into contact with oxygen.

Actual Acid Sulfate Soils:

Actual Acid Sulfate Soils (AASS) are soils in which sulfuric acid has been produced by the reaction of sulfidic ores with oxygen.

What is Acid Sulfate Soil Assessment?

Acid Sulfate Soil Assessment is frequently performed as part of a Contaminated Land Assessment for the Development Application process or to dispose of soil. AETG excels in providing comprehensive support, starting from initial guidance and assessment of risk area maps and extending through the entire process of sampling, analysis, management, and appropriate disposal. In cases where acid Sulfate soils are identified, our proficient environmental consultants are equipped to develop and implement detailed Acid Sulfate Assessment Reports and Acid Sulfate Management Plans complying with the NSW EPA and relevant Council regulations. These plans delineate precise procedures for excavation, treatment, and safe disposal, ensuring a systematic and effective approach to address this issue.

Why Choose Us?

With expertise in acid sulfate soil testing across Sydney and NSW, we offer:

✔Accurate soil testing & analysis using industry-approved methods.

✔ Regulatory compliance support for smooth project approvals.

✔ Customised soil management plans designed to fit specific needs and challenges of the project.

Contact AETG today for professional Acid Sulfate Soil Assessment and Management.