Doreen to Diamond Creek Sewerage Project
We are constructing new sewerage infrastructure in Doreen, Yarrambat and Diamond Creek to ensure the reliability of the sewerage system, cater for growth in Melbourne’s northern suburbs, and reduce the likelihood of sewage spilling into the environment during heavy rain events.
The project involves constructing a new 10-kilometre-long section of sewer pipe, and 18 new sewer manholes, within parkland and road reserves in the Doreen, Yarrambat and Diamond Creek areas.
Building the underground sewer pipe involves our contractor, MFJ Constructions, upgrading or replacing an existing sewer pipe. Construction started at the northern end of the alignment, in the Plenty Gorge Parklands, in March 2019.
MFJ Constructions will be working in some public parkland and along-side of local streets including:
- Yan Yean Road (between Yarrambat Park and Ironbark Road)
- Ironbark Road (between Yan Yean Road and Murray Road)
- Murray Road (full length, from Ironbark Road in the north to the south)
- Ironbark Road (between Murray Road’s southern end and Collins Street)
- Collins Street (between Ironbark Road and crossing Main Street)
- Hyde Street (between Main Road and Diamond Street)
- Diamond Street / Watkins Street (between Hyde Street and Campbell Street Reserve).
Construction started in March 2019, and is scheduled to be completed in early 2021, subject to good weather and ground conditions.
Avoiding disrupting significant Aboriginal sites
In February 2018 our design consultant, Jacobs, conducted extensive investigations on the banks of Plenty River to see if there were any Aboriginal artefacts (such as stones).
After finding a large stone artefact scatter (close to 400 artefacts) that extended several hundred metres, Jacobs consulted with the local Registered Aboriginal Party (the Wurundjeri) and Yarra Valley Water to negotiate a different construction technique to the traditional open-cut excavation method. When working near the Plenty River area, Yarra Valley Water is instead boring their pipe underground, which is protecting the archaeological site from harm.
The stone artefacts that were recovered have been analysed and contribute important information to the story of past Aboriginal life in what is now greater Melbourne.
Protecting the environment
By undertaking this project, Yarra Valley Water is protecting the local environment and waterways by reducing the likelihood of sewage spills during heavy rainfall events. However, it is equally important to protect the local environment, waterways and wetland during construction.
We have completed extensive environmental investigations to choose the best construction methods and reduce environmental impacts during construction.
Building pipes with less impact
To reduce the impact of our works on established trees and the environment, and to avoid disturbing areas where aboriginal artefacts have been discovered, most of the new pipe is being constructed by using a machine to bore a tunnel under the surface, and then pushing lengths of pipe into the underground tunnel.
Watch how we build pipes by drilling underground.
These works will not affect water, recycled water and sewerage services in the area.
Despite our efforts to minimise the impacts of these works on the local community, people will at times notice construction noise, dust, and traffic disruptions. A Council-approved traffic management plan will be in effect to ensure workers, pedestrians, cyclists and motorists are safe.
Due to the depth at which the new pipe will be laid, and the high-pressure levels within the pipe itself, the new sewer pipe is not suitable for nearby properties to connect to for a sewerage service.