The cost of the entire project from 2020 is $626,491.39, with the project ongoing.
The spend-to-date figure does not include a contribution to the creation of the sculpture.
Council chief executive Nedine Thatcher Swann told the Herald a council contribution of $100,000 towards the cost of the sculpture had not been “picked up” before 2020.
The removed hydrocarbon-contaminated soil was disposed of in Hampton Downs at an approved site, while smaller asbestos-contaminated volumes were disposed of at a local site. The new fill came from Cambridge.
Waihi said local fill did not meet the approved standard, was not from an approved receiving site, could not provide the required volume and was not cost-effective.
Discussions started in 1998 on using suitable artwork to acknowledge traditional ownership of the land under “the Watties Accord”.
A contract to create a Hawaiki Turanga sculpture was awarded in 2011.
The 6.3-metre-by-16m sculpture is based on Ruapani, a paramount chief of Turanganui-a-Kiwa who has a common thread to all tribes of Tairāwhiti.
The sculpture has two separate pieces – the main sculpture representing the front of a wharenui and a poutokomanawa (the centre ridge post of a wharenui) representing Ruapani.
The council will cover the costs of landscaping around the sculpture and its ongoing maintenance.