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Acceptable cleanfill material (section 4.2.1 in the Guide)

For regional plans it is expected that the discharge of materials in the following list could be considered as a permitted activity for cleanfills. For district plans the placement of these materials could be expected to be permitted in areas where the plan provides for cleanfilling activities.

  • Asphalt (cured) - Weathered (cured) asphalt is acceptable: After asphalt has been exposed to the elements for some time, the initial oily surface will have gone and the asphalt is considered inert.
  • Bricks - Inert - will undergo no degradation.
  • Ceramics - Inert.
  • Concrete (un-reinforced) - Inert material. Ensure that other attached material is removed.
  • Concrete (reinforced) - Steel reinforcing bars will degrade. However, bars fully encased in intact concrete will be protected from corrosion by the concrete. Reinforced concrete is thus acceptable provided protruding reinforcing steel is cut off at the concrete face.
  • Fibre cement building products - Inert material comprising cellulose fibre, Portland cement and sand. Care needs to be taken that the product does not contain asbestos, which is unacceptable.
  • Glass - Inert, and poses little threat to the environment. May pose a safety risk if placed near the surface in public areas, or if later excavated. The safety risk on excavation should become immediately apparent, so glass is considered acceptable provided it is not placed immediately adjacent to the finished surface.
  • Road sub-base - Inert.
  • Soils, rock, gravel, sand, clay, etc - Acceptable if free of contamination
  • Tiles (clay, concrete or ceramic) - Inert.

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Last updated: 17 September 2007