07 September 2020, 5:27 PM
The Environment Court will today (Tuesday September 7) begin hearing submissions on who should take responsibility for removing about 8500 tonnes of hazardous ouvea premix at the Mataura Paper Mill site.About 10,000 tonnes of the toxic by-product of aluminium production was first taken to the mill six years ago by Taha Asia Pacific, which went into liquidation in 2016.After years of negotiations and arguments between various parties, about 1600 tonnes was recently removed and returned to the Tiwai Point smelter for reprocessing and shipping overseas.AdvertisementAdvertise on the Southland AppHowever, there are concerns that the rest of the premix is not being removed fast enough.The Environmental Defence Society, Gore District Council, Environment Southland and the Minister for the Environment David Parker are parties to today’s judicial negotiations with New Zealand Aluminium Smelters Ltd, a subsidiary of Australian mining giant, Rio Tinto.Ouvea premix is classified as a category 6 hazardous substance. If wet it releases a toxic amonea gas, posing risks to human health and the environment.Floods in the Mataura River in February and a fire at the mill’s hydro-generating plant last week have heightened public safety concerns.Environment Defence Society chairman Gary Taylor told Radio New Zealand on Monday it was not clear who should be responsible for the ouvea premix.However, with Taha Asia Pacific “bust’’, and the liquidators disclaiming the ouvea premix as an onerous asset, the society was arguing that New Zealand Aluminium Smelters Ltd had responsibility for the material according to the “polluter pays principle’’ under the Resource Management Act, and would be seeking a declaration to that effect, Mr Taylor told RNZ.AdvertisementAdvertise on the Southland AppAccording to Environment Southland, another 14,000 tonnes of ouvea premix is stored at other sites in Invercargill.Environment Southland general manager policy planning and regulatory services Vin Smith told the Southland App last week there was “approximately 24,000 tonnes of dross stored in Southland that we are aware of.” “We know of six sites that have dross stored in Southland: Bond Row, Annan Street, Liddel Street, Colyers Road Mataura Old Paper Mill, Aluminium Smelter at Tiwai.’’ “Environment Southland’s role as a regional council is to manage the discharge of contaminants to air, land and water. We don’t control the transportation or storage of hazardous substances. Gore District Council has the responsibility for any land use consent associated with the storage of ouvea premix in Mataura, and any other resource consent to do with storage of the material would be with the relevant territorial authorities,’’ Mr Smith said.Taha Asia Pacific also applied for consent to store ouvea premix at Matheson Rd, Invercargill, but Mr Smith said he understood that ouvea premix was never stored there. An Invercargill City Council spokeswoman has since confirmed the Matheson Road consent application was withdrawn before a decision on whether to grant consent was made.Mr Smith said the regional council was very concerned about the situation at Mataura and across wider Southland, and had been taking action for some time, working with local and central government to find a long-term solution for the removal of all dross stored within Southland.AdvertisementAdvertise on the Southland AppGore District Council communications and marketing manager Sonia Gerken said the Invercargill City Council, Southland District Council and Gore District Council were paying $400,000 (apportioned on a per capita basis) for the removal of the premix.Other contributors are: NZAS $1.75 million, Ministry for the Environment $1.25 million, landlords of the properties where the premix is stored $350,000, and Environment Southland $250,000.It is understood no rent is being paid to the Mataura Mill owner, a storage company associated with Otago businessman Greg Paterson, because Taha Asia Pacific is in liquidation.An Invercargill City Council spokeswoman said ouvea premix “is at present being stored at the following locations within the Invercargill City Council boundaries: 162 Bond Street consented for 240 tonnes amended to 2,500 tonnes; 76 Annan Street (sub address 139-143 Liddel Street) consented for 11,790 tonnes then amended to 11,720 tonnes; [and] 62 Colyer Road consented for stage 1 2600 tonnes, stage 2 20,000 tonnes.’’“No one is paying rent to ICC for the site council owns,’’ she said.The Southland District Council has confirmed no ouvea premix or dross is stored in its district.AdvertisementAdvertise on the Southland AppThe Southland App approached Rio Tinto director of external relations Jennifer Nolan for comment.Ms Nolan doubted she could get answers to the Southland App’s questions quickly, because company representatives worked across three time zones.Rio Tinto was already on the record that it did not own the ouvea premix and had paid many millions over five years to find a zero waste solution with Taha Asia Pacific, she said.Although not accepting responsibility for the ouvea premix, New Zealand Aluminium Smelters had also agreed to contribute $1.75 million to joint fund so it could be removed from Mataura.The dross generated at Tiwai Point smelter is processed by a contractor and shipped offshore to another country. This material is not the same sort of product as Taha Asia Pacific’s ouvea premix, which has been processed differently to create a fertiliser product.