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300kw, 32 metres long twostage axial flow and driven pumps; • Messengers Works Motor Control and Telemetry Room which includes pump variable speed drives, local Human Machine Interface control and telemetry/ WAN interface to GMW’s flow office in Mildura; • Lake Kramen Works comprising a pipeline and regulator structure; • Little Lake Hattah Regulator Refurbishment; • Chalka Creek Works comprising Lowering of sills at various sites and rock-lined fishway channels at the confluence of the Murray; • Breakout works comprising a stop bank (levee) which replaces the existing road; • Cantala, Oateys and Bitterang Works comprising variously a Regulator, Stop Bank and Access Tracks; and Temporary works, as required for the construction of the works including: • Set down areas at Messengers, Cantala, and Oateys; • Site office accommodation/

facilities for both the Contractor and G-MW • Borrow areas (for soil deposition) at some or all of Orchard Partners, Kulkyne and Bitterang; • Temporary Concrete Batch Plant site; • Access track maintenance and passing bays for construction vehicles The remote area, harsh climate and controls needed to mitigate damage to environment and cultural heritage values required a comprehensively planned construction methodology coordinated with multiple stakeholders. Scheduled delivery duration was just over 10-months (18 October 2012) from contract award (1 December 2011) but the highest recorded river level increases in 40-years threatened this already tight delivery time-frame. The effective use of river level modeling and prompt decision making by the Comdain Project Team around mobilisation and protection works for the site ensured the project reached practical completion ahead of time and on-budget. A collaborative approach to every possible element of this project and its works has been a key reason for its

outstanding success: According to Comdain Infrastructure Managing Director Peter Coen, “Comdain has been very proud and grateful to work with stakeholders ranging from Goulburn Murray Water and Murray Darling Basin Authority through to indigenous land owner representatives, environmental groups, government agencies and the broad range of users of the lakes area.” Tony Morse GM Assets MDBA commended Comdain Infrastructure writing “I would like to thank Comdain on their professionalism on managing the Hattah Lakes Environmental Flows project to meet project schedule, come in under budget, respecting indigenous people and their cultural heritage, respecting the environment and building strong relationships.” Andrew Reynolds Project Director GMW expressed their gratitude writing, “constructing these large scale infrastructure works in the environmentally sensitive Hattah Kulkyne National Park presented unique sets of risks and challenges that Comdain’s diligent and systematic approach to managing them contributed significantly to the successful deliver of this project.”


Utility May 2014 digital edition  

Utility magazine covers water, sewer, gas, electricity and communications/the NBN. This issue looks at energy networks and demand management...