Guidelines for the vertical mixing of soil on former broad-acre agricultural land

Vertical mixing of former agricultural land can reduce contamination of surface soils to levels that do not threaten people’s health or the environment.

During the vertical mixing process, surface soil that has been contaminated by agricultural pesticides or fertilisers is mixed with cleaner soils at greater depths to reduce contaminant concentrations.

These guidelines for environmental consultants and council staff provide information on

  • how vertical mixing works
  • when to use vertical mixing for land remediation
  • conditions where vertical mixing should not be used
  • findings from vertical mixing trials
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