Contract 2050: Raupo Street Stormwater Upgrade – Stage 3
This project includes the construction work of 623 metres new stormwater main from Raupo Street at Tongariro Street along Puriri Street up to Kowhai Street, by utilising the open-cut trench methodology to install pipelines with varying diameters of 375mm, 450 mm, 525mm, and 600mm.
The Raupo Street-Puriri Street area currently lacks stormwater services resulting in stormwater inflow to the wastewater system. This has been regarded as a barrier to achieving wastewater and stormwater separation. The installation of a new stormwater pipeline will significantly improve the level of service in the area, effectively addressing the stormwater overflow issue. It will also reduce the risk of flooding and facilitate public separation of wastewater and stormwater systems, both in the immediate area and upstream to be carried out.
This stormwater upgrade has been divided into three stages.
Stage 1: from Heads Road to Hinau Street (completed)
Stage 2: from Hinau Street to Tongariro Street (in process)
Stage 3: from Tongariro Street, along Puriri Street to Kowhai Street.
Construction work began on 10 January 2024.
Contract 2053: Sandcroft Drive Stormwater Outfall
Due to the surrounding topography, stormwater from areas to the west including Tirimoana Place enters the pond which has no outfall other than soakage through the sand layers below.
Water seeks through the ground and enters the ditch near the Sandcroft Drive/Montgomery junction, within the water level in the pond can be high affecting the surrounding properties. This project will maintain the level within a suitable operating range.
The project includes the installation of various valves, including check valves, air emittance valves, and control valves, along with a siphon charging point and manholes.
This project was awarded to Fulton Hogan. Because of changes to the project plan, this work is expected to be completed before 2 April 2024.
Contract 2054: Talbot Street Stormwater Outfalls
Replacement of a 600mm and a 450mm stormwater outfall to Whanganui River. Work includes construction of temporary support to protect construction workers, new manholes, pipe work, bank stabilisation and nature plantings in association with Ngā Tāngata Tiaki o Whanganui (NTT).
Construction work began on 6 March 2024 and is expected to be completed before 26 April 2024.