Water Corporation will begin work at the end of June to construct 10.7 kms of new underground water supply main from the existing pipeline at Edward Road to the Nanson Road tank. This work will increase the flow rate into the Nanson Road tank from the Allanooka supply main in Geraldton.
The new main will mostly be constructed along the road reserves of Chapman Valley Road, Webber Road, Fairfax Road, Polo Road and Edward Road, along with the first sections being constructed underneath the Chapman River. For the work along the road reserve, we will dig an open trench using an excavator, lay the new water main and then backfill the trench.
From the end of June to January 2018, the following activities will take place:
- Stage 1 of this work will involve installing the new main within road reserves. Local residents should expect medium-level noise from trucks, excavator or trenching machine digging excavations, with minimal dust and vibration. We will be in contact with residents residing along the pipe route before this work starts.
From the mid-January to end of March 2018:
- Stage two of this work will involve installing two new parallel underground pipes underneath the Chapman River near Polo Road.
- To install these pipes, the contractor will drill from the southern side of the river. A series of drillings will take place to create the required “trenches” for the proposed mains, before the actual mains are “pulled” from the northern end of the river through the trenches underneath the river bed.
- Approximately 400m of pipe, for each drill (two in total), will be welded and strung on rollers above the ground, adjacent to the river bank, before they are pulled through the trench.
When we connect the new water supply main to the scheme, customers may experience a temporary interruption to their water supply, however we will provide advanced notice of this activity.
Traffic management will be in place and road users will be asked to keep to the reduced speed limit, which will be indicated through signage in these areas.
The work is expected to start at the end of June and is scheduled to be completed by the end of March 2018.