62 | Catering for region’s growth The works – in the key areas of Paharakeke, Wairatahi and Waipatu – will also provide more capacity within the existing system for inner-city intensification. Hastings District Council: Paharakeke Gravity Pipeline T T Hugh de Lacy INFRASTRUCTURE The old approach of ‘bolting on’ additions to Hastings’ existing wastewater and water- supply networks is coming to an end, as Hastings District Council advances the construction of major three waters infrastructure in areas that can no longer keep up with demand. Urban growth in the district has greatly exceeded the council’s expectations, so it developed a strategic growth infrastructure business case to rationalise its infrastructure development spend. “This was aimed at increasing the capacity of the existing wastewater network, and expanding areas serviced by reticulated water supplies to support growth, both now and in the future,” says Brett Chapman, council’s principal advisor on essential services. “Major investments that were originally signalled in council’s infrastructure strategy as future works beyond year 10 are having to be brought forward and re-thought as growth pressures continue.” A budget of $36.3 million was approved for the wastewater upgrade, half of it being paid by the Government’s Infrastructure Acceleration Fund, a contestable fund established in 2022. “The work involves the construction of 10 kilometres of GRP and HDPE pipelines and two new pump stations, principally serving the Flaxmere and Waipatu areas for new Papakāinga and affordable housing,” Brett says. The works – in the key areas of Paharakeke, Wairatahi and Waipatu – will also provide more capacity within the existing system for inner-city intensification. They are being delivered in seven contract packages. The first stage included two contracts – the expressway gravity and Waipatu pipelines, completed last year. The Wairatahi contract, on Flaxmere’s boundary, is under construction and includes a 2.5km rising main and pump station, due for completion in late 2025. Stage 3, recently completed by TW Civil and Infrastructure, involved pipeline installation and associated features connecting stage 1 to stage 4. Stage 4, currently being undertaken by SCL Civil Works and expected to be completed in October this year, connects to stage 3, and includes crossing an existing trade-waste pipeline, requiring a complex solution to be developed. Stage 2, currently out for tender, covers the physical works associated with the installation of the wastewater pipeline from the Evenden Road/Pakowhai Rd intersection, through to the end of Coventry Rd, adjacent to the railway line. The final contract will be stage 2 of the Waipatu project, the installation of 2km of pipeline and pump station to service that area. The network has been designed using GRP and HDPE pipe, with these modern pipe materials expected to provide a 100-year-plus design life. Hastings Mayor Sandra Hazlehurst has described the Paharakeke and associated infrastructure projects as vital to the district’s future. “Our council understands the importance of infrastructure that enables growth of our population, businesses and jobs. “We have been very focused on supporting a housing market that’s working for the people, and creating a place that’s attractive to business and industrial investment, which leads to more jobs for our people,” the Mayor says. “This once-in-a-generation investment is setting us up for ongoing growth, and we are very pleased that the Government has partnered with us to help meet the cost,” she says. Proud to be the infrastructure SDUWQHU IRU WKH 3ÃKDUDNHNH Gravity Pipeline. twci.co.nz
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