Ringwood South RB Upgrade - Aqua Metro Pty Ltd
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Ringwood South RB Upgrade

Ringwood RB Upgrade

Small Scale Capital Program


Melbourne Water


City of Maroondah, Inside the premises of Aquinas College, Ringwood

Key Sector

Earthworks – Retarding Basin

Contract Type



2 Months
Dec 2018 to Jan 2019

Key Facts

  • Retarding Basin located on private property, inside the premises of Aquinas College.
  • Trees growing on top of the levee and needs to be removed.
  • No filter trench and diaphragm on the levee.
  • Outlet drain running in close vicinity of the sewer and is approx. 7m to the invert.


The primary driver for this project was compliance to ANCOLD which provides guidelines and tools necessary to undertake RB safety management.

Scope of Service

The Scope of Work includes to improve the existing conditions of the Retarding Basin.

The key works required under this project include:

  1. Tree removal form the levee including chasing and removal of the roots.
  2. Installation of the new filter diaphragm around the outlet.
  3. Installation of the filter trench on the levee.
  4. Regrade the top of the levee and new crest capping to the advised RL.
  5. Reinstatement including section of the football oval.


  • Site specific Work pack created.
  • Toolbox meetings held every day and SWMS followed strictly for all activities of work.


  • Environmental Management Plan implemented to prevent sediment laden water from entering waterways or stormwater drains.
  • Suitable controls implemented to prevent dust leaving worksite.

Stakeholder Engagement

  • Liaison with council, Aquanis College for seamless delivery.
  • Work was carried out during normal working hours, and during college break to minimize the impact on the college.
Ringwood Rd RB Upgrade - Filter sand conditioning
Filter sand conditioning
Ringwood Rd RB Upgrade - Filter Trench
Filter Trench
Ringwood Rd RB Upgrade - Trench for Filter Diaphragm
Trench for Filter Diaphragm