Wickham - Ring Main Replacement and Rectification of Sub-Meters

⁠⁠⁠Sub-contract via Rio Tinto Iron Ore's major supplier.

Background:
* A number of residential properties in Hibiscus Way and Saltbush Court within Wickhamhave recently reported numerous bursts.
* There are a total of twenty four (24) properties.
* The existing water reticulation network is a ring main with blue line PE pipe installed.
* There is a single master meter at this location
* There are sub-meters at each property that are currently not installed to Watercorp standards. Theses are connected to the single master meter
* Whilst carrying out adhoc repairs, it was identified that there are many issues with the installation:
1. Non-compliant separationof services (namely, power and water)
2. Non-compliant back filling/bedding methods used (e.g. wooden braces left in place)

Scope of work
* Plan and liaise with relevant stakeholders disruptions related to utilities (power, water), roadways, driveways, etc.
* Obtain correct permit requirements
* Cable locating
* Carry out utility isolations
* Cut asphalt and concrete as required to facilitate installation of new ring main
* Install new ring main with Watercorp approved piping (DN63 HSCR RCD PE 100)
* Ring main must be installed with continuous sleeve (e.g. DN100 DWV conduit) as per Watercorp recommendations
* Backfill and resurface areas
* Make compliant to Watercorp Standards all sub-meters at each property, including (but not exclusive to): cutting back and removing of obstructing trees, plants or shrubs, raising meters, and/or installing new tails.
* Connect each property to new ring main
* Connect new ring main to master water meter
* Test and commission new ring main to AS 3500
* Clean up and dispose of any and all rubbish
* Supply plant and machinery to execute Scope of Work
* All work is to be carried out to Standards/Regulations including (but not exclusive to) RTIO, AS, and NCC.

Other:
* Site visit required for cable locating, at the cost of the Contractor.

Safety
A safe workplace is essential to the continued success of our business. At Rio Tinto our goal is for everyone to go home safe at the end of each shift. Eliminating fatalities and catastrophic events, while reducing the number and severity of injuries, is something we strive for each and every day. Our approach to safety goes beyond compliance and seeks to achieve year-on-year improvement.

Further Notification
The scope of work is a summary description of services that may be required by Rio Tinto and may be subject to change in Rio Tinto’s absolute discretion.