The Infrastructure group has a number of projects or bodies of work in progress throughout the year. Read below or click the links at the bottom for more information on some of these projects.
Sanson Water Treatment Plant Reservoir
Work is expected to be completed on the new Sanson reservoir, located behind the swimming pool in Fagan Street, by the end of March 2018. This new reservoir will ultimately provide all of the storage for the Sanson water supply. Contractors are currently in the process of constructing the foundation for the reservoir. Following completion of the foundation the reservoir will begin to be pieced together and raised into place. The finished reservoir will be approximately 9.5m in diameter, 10.0m tall and hold 420,000 litres of water.
Almadale Chemical Tank Replacement
The Fluoride storage tank at the Feilding Almadale Water Treatment Plant is at its end of life and requires renewing to maintain security of the chemical. As part of the replacement we are also taking the opportunity to paint the bund area around the tank with a special chemical resistant product.
The existing sewer needs rehabilitation and the most cost effect method is trenchless relining. Investigation of the sewer main by CCTV showed deterioration, infiltration and cracking of the pipes.
Trenchless relining allowed the rehabilitation of the pipe without excavation, or at least with minimal excavation.
The methodology we have used throughout the Manawatu is cured in Place (CIPP) or spiral wound. For the majority of the relining programme (pipe diameter less than 300mm diameter) we have chosen CIPP as this is the most common relining option in NZ. CIPP is a thermoformed pipe lining which involves pulling a new liner into an existing pipe, then applying heat and/or pressure to force the liner to expand to fill the pipe. CIPP technologies combine a carrier impregnated with heat, ultraviolet light, or ambient curable resin to form a pipe within a pipe.
A few advantage of trenchless relining technology:
- Smaller carbon footprint
- Minimal impact on traffic
- Minimal installation time
- Minimal interruption to supply
788m of the waste water pipe was relined in November 2017 in East Street with the remainder of East Street to be completed in May/Jun 2018.
Queen Street stormwater relining
Storm water pipe from MH2075 to the outfall on Queen Street has been identified by CCTV as STR grade 5, which requires the pipe to be renewed. The location of this stormwater pipe runs through private property and under a house, creating access and service issues.
The rehabilitation option we have chosen for the existing stormwater pipe is relining. The reason for relining the pipe eliminates the need for excavation and potential undermining of the house foundation and damage to private property.
The relining option we are using is a cured in placed product (CIPP) from Anzel ltd. Anzel is a subsidiary company of Tatana contracting Ltd based in Levin and use a resin that is non-harmful to the environment and will cure underwater.
Derby Street stormwater
A new Stormwater line from McCorkindale Street, down Derby Street to the Makino Stream. The new stormwater will allow the residential development at Wescombe Grove (33 additional lots) to be connected to the new line and reduce the pressure on the existing undersized part of the stormwater network.
Port Street stormwater
Port Street East is an integral part of the Precinct 4 urban development area, currently experiencing significant subdivision growth and lodgement consent applications for further development.
Stage 1: Urban Profile Roading Reconstruction of Port Street East (Stage 1) comprising 400m in length from Pharazyn Street to Oranga Lane, including watermain, street lighting and utilities future proofing.
Stage 2: Services Installation of deep trunk sewer and stormwater mains to cater for current uptake and projected growth, along the full extent of Port Street East (Stages 1, 2 and 3 – Pharazyn Street to Makino Stream end) and a partial leg into Churcher Street as far as Astrada Court.
Satori Way stormwater infrastructure upgrade
This project provides for the:
- investigation of stormwater flooding in the area bounded by Satori Way, Awahuri Road and Ursula Drive
- provide solutions in terms of stormwater collection and disposal utilities systems to cope with discharges
- improving existing stormwater network on Satori Way and Awahuri Road by extending existing pipe network and kerb and channel.