Queenstown Recreation Ground Wastewater Conveyance Scheme

Infrastructure for South Island resilience and growth.

To help Queenstown accommodate growth, HEB Construction was called in as a part of a long-term plan to improve the region’s water infrastructure.

For this project, our role was to construct a new wastewater pump station and rising main through the town centre and adjacent suburbs – a complex task made more complex by the onset of COVID-19 and Level 4 lockdowns.

The new assets we’ve built will provide more than 450 kL of emergency storage, additional pumping capacity and increased resilience for the city’s wastewater network.

Our work
Provision of valuable input into design as a part of Early Contractor Involvement (ECI) to create a highly tailored, cost-effective solution.

Sheet piling up to 12 metres in depth, using specifically designed shoring methods to allow for deep excavations.

Installation of 1,800 metres of wastewater rising main (4.5 metres depth), and 320 metres of gravity wastewater pipe using trenchless and open cut methods.

Construction of two 2.5-meter diameter, 60-metre long emergency storage tanks, as well as 4-metre diameter pump station with a wet wall depth of 7.7 metres.

Despite Covid lockdowns and the discovery of contaminated material, the project was completed on schedule.

Sustainable Outcomes

Due to the nature of these works, this project site was classified as hazardous – meaning excavated material would need to be moved to a specialised Invercargill facility for disposal. We devised a solution to reduce those contamination levels, and now a local quarry is using the safe fill for landscaping and reinstatement projects. This is a great community outcome, and also helped us reduce fuel consumption – by about 10,000 litres of diesel.

Consideration for the surrounding community was also essential here, given the proximity of the project to schools, homes and businesses. We took extra care to reduce our impact through robust noise control and monitoring, the use of non-toxic products, and by keeping in regular contact with our neighbours. In the end, we received no complaints about the project.