#regional: Zero Waste Aotearoa Sounds Alarm Over Whangārei Plastic Burning Ruling

Environmental advocates are warning an Environment Court decision allowing a plastic pyrolysis facility in Whangārei to operate without an air discharge consent could have significant consequences for public health, environmental protection and New Zealand’s waste management framework.

Zero Waste Aotearoa says it is deeply disappointed by the ruling, arguing the plant should be subject to the same environmental monitoring and regulatory oversight as other waste disposal facilities.

The facility uses a process known as pyrolysis, where plastic waste is heated in the absence of oxygen to produce gases that are then burned. While some proponents describe the technology as an alternative form of recycling, Zero Waste Aotearoa argues it is internationally recognised as a form of waste incineration rather than recycling.

The organisation says the process has the potential to release hazardous air pollutants, including heavy metals, dioxins, acid gases, carbon monoxide and other persistent organic pollutants commonly known as “forever chemicals.”

A key concern raised by the group is that the Environment Court did not require detailed air dispersion modelling before reaching its decision. It says without scientific modelling there is no clear understanding of where emissions may travel or what impacts they could have on nearby communities and the surrounding environment.

Zero Waste Aotearoa also argues the evidence presented by the company was insufficient, with no independent expert testimony provided to assess potential environmental effects. The organisation says hazardous by-products, including contaminated carbon char, wastewater and chemical residues generated during the process, also require greater scrutiny.

The ruling determined the facility could be considered a recycling depot. Zero Waste Aotearoa rejects that interpretation, saying the Waste Minimisation Act distinguishes between recycling and recovery activities, and that overseas jurisdictions including the European Union and United States classify pyrolysis as a form of incineration rather than recycling.

The organisation points to international experience, where several waste-to-fuel facilities have faced regulatory action over emissions and compliance failures. It argues New Zealand’s environmental regulations have not kept pace with emerging waste technologies and that alternative waste disposal methods should face the same consent, monitoring and enforcement requirements as landfills.

Another concern is that while the court indicated further agreement will be required over what waste materials can be used as feedstock, there would be no formal resource consent conditions to monitor compliance or enforce restrictions.

Zero Waste Aotearoa says the Northland Regional Council presented extensive evidence supporting the need for an air discharge consent and believes that evidence should have been upheld. The organisation is now calling for the decision to be appealed, saying stronger environmental safeguards are needed to protect both communities and the environment.

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