Prior to handover of the non-potable network at Mawson Lakes to SA Water and open space irrigation to City of Salisbury, Delfin Lend Lease and partners engaged HydroPlan to liaise with all stakeholders to prepare an Irrigation Management Plan for submission to the EPA.
Class A equivalent water from the Bolivar DAFF plant and the Parafield wetlands Aquifer Storage and Recovery scheme are delivered to a second meter at every residence for toilet and garden usage as well as 100 ha of parks, landscapes and public open space.
The IMP considers environmental effects of irrigation with reclaimed water, a detailed monitoring plan of critical control points, and contingency plans for risk management.
There are many reasons why Bunyip Water and the Gawler Water Reuse Scheme has attracted a lot of positive attention. This $22m project harvests stormwater from the Gawler River north of Adelaide and delivers it to urban users in Hewett near Gawler, and rural water users in the western Barossa Valley. HydroPlan were engaged by Bunyip Water as the design engineers and construction managers in March 2015 to help meet stringent Federal Government funding milestones and complete the project by the end of August 2016. HydroPlan will also provide contract Superintendency for 12 months defects liability periods.
In an innovative public-private partnership, a $10.7m grant from the Australian Government, and an $11.0m loan from the Light Regional Council for the capital investment for the infrastructure, with the foundation customer Seppeltsfield Wines providing the bulk of revenue security by entering into long term water supply agreements. They also have options of control over the infrastructure assets after 6 or 10 years by repaying the invested capital. So when the scheme delivers the water it promises everyone wins.
The Barossa is the fifth most renowned wine region in the world but is restricted by limited stormwater, groundwater, recycled wastewater and water imported from the River Murray. This project substitutes 800 ML of Murray water by harvesting up to 1600 ML/a from the Gawler River.
HydroPlan has been fortunate to witness extraordinary leadership by the people involved in creating and steering this project, and copious competence and dedication from the people these leaders choose to work with.
Managed Aquifer Recharge
As part of water security, HydroPlan arranged equipping one MAR well (constructed prior to HydroPlan's involvement) with a pump and a groundwater license. HydroPlan changed the MAR design to target an aquifer further north where conditions for MAR have since been described by regulators as ideal.
MAR is an enhancement that is essential for water security of the GWRS. Trial injection has been completed successfully - watch this space...
The project has led to three awards -
IPWEA - Institute of Public Works Engineers Australasia - Excellence Award, Design and/or Construction of Public Infrastructure - Water
WIA - Water Industry Alliance - Smart Water Award - Alliancing High Commendation
There are many reasons why Bunyip Water and the <...