A management plan to dig up contaminated wood waste from a boat harbour development site on Keepa Road in Whakatāne is being signed off by council.

However, one councillor has likened the move to opening “a Pandora’s Box”.

Recent testing has confirmed there are dioxins in the northern part of the site and Polyfluoroalkyl substances (PFAS), known as “forever chemicals”, in the woodwaste and groundwater.

“It’s quite a frightening situation,” Malcolm Campbell tells Local Democracy Reporting, though he says he dosen't speak on behalf of Bay of Plenty Regional Council.

At a recent meeting, he told he council’s monitoring and operations committee, “my big concern is if we open that Pandora’s Box and [the contamination] starts flowing out into the Whakatāne River”.

Te Rahui Herenga Waka Whakatāne board chairman John Rae says regional councillors should be more supportive of the project.

"The Te Rāhui board are committed to the success of this project," he says.

"[We] believe the recent commentary from Bay of Plenty Regional Council representatives around the removal of contaminants, as project partners, and leaders of environmental management in our region, should be more supportive of the removal of contaminants near the awa," he says.

The Environment Protection Authority granted consent to Te Rāhui Herenga Waka Whakatane in June 2022 to build a commercial boat harbour on land that was previously used as an industrial landfill.

Te Rahui Lands Trust, Ngāti Awa Group Holdings, the Crown through Kanoa, and Whakatāne District Council are shareholders in the partnership.

Regional council chairman Doug Leeder says the regional council flagged at the time to the EPA that, in their view, this was a contaminated site.

Waste material from the Pinex sawmill and the Whakatāne Board Mill was used as fill for the former wetland site, before it was topped with soil in the 1980s. It has since been used to grow maize.

The regional council has the responsibility to oversee compliance with the consent conditions, including a Site and Soil Contamination Management Plan. This requires certification from the regional council and Whakatāne District Council.

The management plan for the first of four phases, removing the woodwaste and stockpiling it on a neighbouring site, was certified last week.

The first stage of the planned Te Rāhui Herenga Waka Whakatāne will provide a commercial harbour accessible from Keepa Road.

A further resource consent will be required to take the woodwaste away from the site.

Leeder tells Local Democracy Reporting the regional council inherited the issue wihh the contaminated land before the organisation was formed in 1989.

“The issue of where the wood waste goes has not been determined. So they’ll make a big stockpile of the stuff and then decide what to do with it."

Campbell is concerned the regional council will be left to clean up the mess if the project isn't completed.

While he feels the landowners should be able to make some money from their land, he didn’t think a boat harbour on that site was the best option.

“There are plenty of other places a boat harbour could be built.”

Regional council regulatory services general manager Reuben Fraser says certifying the management plan means the regional council is confident the plan minimises the risk of discharges to the environment and to human health.

“We’ve also encouraged the consent holder to get a really good idea of what the total costs of the project are going to be and that they have the funding available to see it through,” he says.

It has taken 18 months and seven iterations of the first stage of the management plan to satisfy the council that sufficient safety measures would be taken.

Fraser says a bond will be set to be paid by the consent holder before excavation begins to ensure that, if they can’t see the project through for any reason, the regional council can use that money to make the site safe again.

“We will have to go through more of these management plan certification processes when we get to further stages,” he says.

“Hopefully the community can take some comfort that the council has been pretty stringent on this management plan. We’re taking this really seriously.

Rae says the board is pleased to receive certification after lodging the first iteration early in 2023.

“The management plan focuses on removing the contamination from the Te Rāhui site and relocating it to a consented landfill.

“The board continue to discuss in detail and consider the excavation and transport budget for the waste and will only get fully underway on the site when the budget for the works is agreed."

Te Rāhui Herenga Waka Whakatāne chairman John Rae is pleased the board has received certification of its Site and Soil Contamination Management Plan for the boat harbour site. Photo Te Rāhui Herenga Waka Whakatāne.

Te Rāhui will make further announcements when the remaining management plans are lodged and approved by both councils and activities begin on the site, he said.

This includes continued trials and tests.

"This project will restore the connections and mauri of the river for future generations, retain existing jobs and create hundreds more to ensure flow-on economic benefits for the region."