(Potential Acid Sulphate Soil)
Potential Acid Sulphate Soils cannot be defined as GSW (Non-Putrescible) until it is treated with lime in accordance with site Acid Sulphate Management Plan. Subsequent to lime dosing the material can be certified to be sufficiently treated to meet GSW (Non-Recyclable) criteria. Earth Exchange has licenced facilities all over greater Sydney authorized to take treated PASS.
Waste Audit Trail: is maintained by providing EPA licence of facility and weighbridge docket of each load tipped.