As part of sewage pond refurbishment works for the Department of Defence, Duratec will install a high-density polyethylene (HDPE) liner at the RAAF Pearce sewage ponds to prevent the leaching of contaminants into the ground water.


The scope of works includes:

  • Dewatering of ponds.
  • Clearing of pond base, embankments and surrounds to good ground.
  • Compaction of subgrade.
  • Replacement of leaking concrete asbestos pipes.
  • Trenching for liner installation.
  • Installation of HDPE liner.
  • Backfilling of trenches.
  • Installation of limestone access track.
  • Recommissioning of ponds.


  • Environmentally positive project with a direct impact on ground water quality.
  • Sewage ponds to remain operational for the entirety of the project.


  • Specialist Civil Services

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