Cleanfills

The Ministry for the Environment (MfE) defines “Cleanfill” as material that when buried will have no adverse effect on people or the environment.

Cleanfill material includes virgin natural materials such as clay, soil and rock, and other inert materials such as concrete or brick that are free of combustible, putrescible, degradable or leachable components; hazardous substances; materials that may present a risk to human or animal health (e.g. medical waste, asbestos); and liquid waste.

A “cleanfill site” accepts only cleanfill material as defined above, or as defined in a site specific resource consent, and must be designed and operated in accordance with the “Guide to the Management of Cleanfills” (MfE, 2002) and the conditions of any relevant consent.

Fraser Thomas provides assistance throughout the whole cleanfill process, including:

  • Concept, preliminary and detailed design
  • Preparation of engineering reports and assessments of environmental effects to support resource consent applications.
  • Preparation of cleanfill management plans
  • Observation and monitoring of cleanfill operations
  • Cleanfill certification and compliance reporting

Many of these projects have involved working with other specialist consultants addressing planning, traffic, noise, ecology and visual effects.

Some cleanfills might have been operating illegally, either without consents or breaching consent conditions or rules in a district or regional plan. Fraser Thomas can assist clients in these particular situations, providing assistance in order to obtain the necessary retrospective certification.

Recent projects include:

  • Karaka cleanfill 1: consent application for extension of existing cleanfill into adjacent gully (33,000m3) on existing farmland.
  • Brookby cleanfill: consenting for proposed 170,000m3 cleanfill on existing farmland,
  • Papakura cleanfill: retrospective consenting of illegal cleanfill on residential lifestyle block, including obtaining consents to extend cleanfill operation (7500m3).
  • Karaka cleanfill 2: geotechnical and environmental investigations of completed cleanfill (12,800m3) on farmland to confirm compliance with resource consent requirements.
  • Warkworth: Engineering input into improving operations of existing moderate sized cleanfill, with particular focus on erosion and sediment controls.

Expertise provided:

  • Surveying
  • Civil
  • Environmental
  • Contaminated Land
  • Geotechnical

Project cycle:

  • Investigations
  • Preliminary Design
  • Resource consenting
  • Detailed design
  • Construction observation
  • Compliance monitoring
  • Certification