AtlanChamber: 770kL OSD Tank for Cobram’s Regional Shopping Hub

Cobram is a regional Victorian centre in the Shire of Moira bordered by Australia’s longest river, the Murray River, and scenic surroundings with local orchards, dairy farms, and wineries.  

An upcoming shopping centre development, Cobram Village, will provide growth avenues for the township with supermarket facilities and commercial zoning. The retail hub will support essential services for residents and includes medical services, a pharmacy, and mixed tenancy opportunities.  

Four hundred and thirty parking spaces will facilitate access to these local amenities – with these shopping structures, roofing and car parks requiring water quantity management to futureproof the site and prevent localised flooding.  

Nearby, Thompson Beach is an iconic beach on the town’s riverbank – a prime example of the importance of stormwater management, generational water quantity infrastructure, and preserving Joy in Water experiences for the local community. 

Outperforming Cast In-Situ: Project Timelines with Chamber Systems

A 770,000-litre AtlanChamber will ensure OSD assets meet the site’s catchment requirements – with the system’s high-performance infiltration capabilities and large-scale detention capacity managing flowrates during heavy downpours.

Subsurface installation matched the site’s unique footprint, with the installation situated beneath a long, narrow access driveway at the rear of the site. With the tank chamber measuring eleven metres wide and one hundred and four metres long, the AtlanChamber was ideally suited due to its ability to meet these challenging spatial requirements.

Combined installation time for the AtlanChamber system was five days – which included one day for the liner, two for the installation of bases and chambers, and two days for excavation works and backfill. Providing cost and program savings compared to cast in-situ alternatives, the AtlanChamber ensured expedited project timelines with its modular design, quick installation and reduced lifting requirements.

This smooth and seamless installation provided great benefit to ongoing site development – optimising the installation of this key infrastructure to operate within the available project budget, site footprint and short production schedule.

Fully trafficable, AtlanChamber features superior load ratings which comply with AS5100 and W80 wheel loads – which will ensure compatibility of this infrastructure with aboveground works.

A high-performance Ecoceptor will provide pretreatment, with this GPT (Gross Pollutant Trap) ensuring debris, sediment, and gross pollutants are captured prior to conveyance to the OSD chamber.  

The Atlan Ecoceptor is a vertically configured GPT with vortex cleaning action – and meets water quality specifications for a wide range of commercial applications. Pollutant removal specifications include sediment, light oils, and suspended solids (TSS). With single-piece modular design, this innovative device is lightweight and easily transportable, further aiding project efficiency.

The combination of pretreatment asset and OSD will reduce maintenance overheads and improve OPEX costs across the asset lifecycle – while ensuring water quality outcomes are met across the site.

With both assets featuring a 100-year design life, they will ensure the site is protected from rain events and the pristine environments of the Murray River are preserved for future generations.

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