Water

2 Aurecon Water

Berg Water Project South Africa

Ageing water infrastructure, water pollution, sustainability and climate change are key issues shaping the future of the water industry. In developing countries, additional drivers are massive urbanisation and global programmes to improve access to potable water.

3Aurecon Water

Urbanisation has meant that the demand for clean water in cities and towns has never been greater. Governments around the world are under pressure to build new infrastructure that will meet future demand, while at the same time ensuring that existing infrastructure is upgraded and replaced.

Recent years have seen a significant shift in global climate patterns. While some regions grapple with the effects of serious drought, with desalination and water reclamation plants being constructed, increased rainfall and rising sea levels have seen other areas prioritise the prevention and management of floods.

Amid these environmental changes, sustainability of water services is increasingly under the spotlight, perhaps more so than for any other natural resource.

Having worked extensively in the water industry globally, Aurecon understands the economic, technical, and social factors that influence water services.

Aurecon provides a full range of integrated, multidisciplinary engineering, management and technical services that address every element of the water cycle. We work closely with clients to tailor solutions that encompass the range of issues impacting on the developmental needs of society, as well as on our clients’ business operations.

We do not compromise on Health & Safety. It comes first in everything we do and is a core value for Aurecon. We foster this by appointing experienced teams who combine a deep understanding of

Health & Safety management with that of our clients.

Similarly, environmental best practice is a key consideration in everything we do and we strive to realise sustainable solutions through innovation.

Central to this is our focus on our clients. We integrate and align our teams with that of our clients’ business and company drivers to deliver best practice for project outcomes across safety, risk, quality, budget, sustainability and schedule.

Adelaide Desalination Plant Australia

4 Aurecon Water

Water resources managementIncreased water demand from communities, agriculture and industries, coupled with growing uncertainty in future supply due to climate change impacts, presents a significant challenge to our clients’ business operations. Aurecon offers integrated, multidisciplinary solutions to address water resources management challenges, with our specialised team delivering a complete range of engineering and scientific services to help clients manage and optimise the use of their water resources.

Pumps and pipelinesAurecon’s integrated network planning, water and sewerage pipelines, pumping stations and operational and asset management services are strengthened by our experience in complementary areas including community consultation, social impact assessment and planning and approvals.

Water and wastewater treatmentAurecon’s expertise encompasses treatment system planning, potable water, recycled water and desalination, wastewater, biosolids and treatment plant design, as well as operational and asset management.

CoastalWith particular expertise in marine structures, master planning, erosion control, inlet and outlet structures and specialist modelling, Aurecon has delivered innovative coastal solutions for complex shore protection works, sea access structures, commercial and residential development and recreation facilities.

DamsOur dam design capabilities span the entire project life cycle from project inception and planning through to operational management of completed projects. Aurecon is particularly strong in dam design, water storage planning, upgrades and augmentation, condition assessments, safety management and operations.

Flood management and urban stormwater engineeringAurecon has extensive experience in flood analysis and management and urban stormwater drainage engineering. Our core flood and urban stormwater management services include flood modelling, floodline and hazard mapping, urban stormwater management plans, river engineering, design of erosion and scour protection, retention and detention dams, dam operating rules and stormwater conveyances and structures.

IrrigationDelivering solutions that focus on maximising efficiency, Aurecon’s experience in rural water supply, irrigation and drainage cover the project life cycle from feasibility studies and master planning through to detailed design and farm-gate delivery of water.

Project managementWith global master planning experience, Aurecon’s strong project management capabilities incorporate capital delivery process management, design phase management, procurement and construction phase management.

Water sciencesAurecon's water engineering capabilities are founded on our strength in a range of water sciences. Primary among these are surface water hydrology, geohydrology, hydrogeology, water quality, eco-hydraulics and GIS sciences.

Technical specialisationsOur diverse skill base and expert teams combine innovative thinking with localised knowledge to deliver cost-effective solutions for clients across our key areas of expertise.

5Aurecon WaterAlkimos-Quinns Main Sewer Australia

Maguga Dam Swaziland

Windsor Flood Evacuation Route Australia

Vaalharts Irrigation Scheme Study South Africa

Rosedale Wastewater Treatment Plant Tunnel New Zealand

6 Aurecon Water

Water planning and management Water sciences Waterways and bulk stormwater Dams Pumps and pipelines Water treatment Wastewater

treatment Coastal

Surface water and groundwater availability assessment (including water quality)

Water use licensing and compliance support

Hydro-meteorological monitoring

Dam-break modelling Design storm analysisDam site selection and optimisation

Streamflow measurement structures

Strategic planning of pumping systems

Instrumentation, control and automation

Raw water quality assessment

Wastewater characterisation

Coastal design

Water resources yield-reliability analysis

Feasibility studies for bulk water resources development

Surface water hydrology

Reservoir hydrodynamics/water quality modelling

Stormwater modellingGeological and geotechnical field investigations

Instrumentation Route corridor studiesCommissioning system components

Process selectionProcess modelling and selection

Coastal management

Water demand/loss management and conservation

Bulk infrastructure implementation planning

Continuous rainfall-runoff modelling

Fluvial geomorphologyDesign flood analysis – deterministic and probabilistic

Laboratory testing & analysis

Operation and maintenance manuals

Life cycle costing and business case

Hydraulic and operational performance evaluation

Water treatment for potable and industrial use

Equipment selection Coastal modelling

Implementation of environmental water requirements

System operating rule design and optimisation

Surface water quality monitoring, assessment and modelling

Sedimentation studies Flood-line determinationDesign of all embankment types

Emergency preparedness plans

Gravity pipeline systems and pressure mains

System maintenance and optimisation

Optimisation of chemical dosing, rapid mixing and flocculation

Nutrient removal Oceanography

Water balances at local, regional, national and trans-boundary scales

Managed aquifer recharge (MAR)

Hydrogeology/ Geohydrology

Environmental water science

Flood risk/hazard assessment and management

Intake structures & spillways

Dam-break analysisWater hammer and surge analysis

Odour monitoring and control

Selection of solids-liquid separation unit and appropriate loading

Sludge management

Water resources reconciliation strategies for bulk systems/headworks

Aquifer storage and recovery (ASR)

Groundwater modelling, including water quality

Advanced modelling (CFD; Physical laboratory models, etc.)

Bulk stormwater drainage master planning

Grouting and erosion control

Dam safety inspectionsComputational fluid dynamics analysis

Rehabilitation and replacement advice

Filtration by media and membranes

Instrumentation and control

Integrated water resources management strategies

Water re-use, recycling and reclamation

Water resources system analysis and stochastics

Water demand modelling

Design and rehabilitation of all types of stormwater structures

HydropowerCompliance with Dam Safety Regulations

Pump station structural, mechanical, electrical design

Leakage managementDisinfection of treated water

Assistance with commissioning

Verification and validation of water use

Pollution impact assessment – surface and groundwater

Design flood hydrologyWater-sensitive urban design

Numerical and laboratory hydraulic modelling

Diversion tunnels Dam rehabilitationGeotechnical and tunnelling

Desalination and reverse osmosis

DAF and DAFF

Water allocation assessment

Climate change assessment and adaptation – surface and groundwater

Design of flood warning systems

Information management and decision support systems

Stormwater treatmentGates and flood controls

Materials science and corrosion control

Control of concrete aggression and metal corrosion

Odour control

Institutional and policy development and support

River hydraulics and 1D/2D hydrodynamic modelling

Mine stormwater management

Sludge treatment and disposal systems

Industrial effluent pre-treatment and disposal

Erosion protection and river engineering

Recycling of recovered water

Membrane bio-reactors (MBR)

Canal design and rehabilitation

Instrumentation and control of the treatment works

Biological oxidation of metal ions

Materials science/corrosion

As clients move through the project life cycle, we offer a range of capabilities that enable us to tailor a service mix for each individual client.

A tailored services mix

7Aurecon Water

Water planning and management Water sciences Waterways and bulk stormwater Dams Pumps and pipelines Water treatment Wastewater

treatment Coastal

Surface water and groundwater availability assessment (including water quality)

Water use licensing and compliance support

Hydro-meteorological monitoring

Dam-break modelling Design storm analysisDam site selection and optimisation

Streamflow measurement structures

Strategic planning of pumping systems

Instrumentation, control and automation

Raw water quality assessment

Wastewater characterisation

Coastal design

Water resources yield-reliability analysis

Feasibility studies for bulk water resources development

Surface water hydrology

Reservoir hydrodynamics/water quality modelling

Stormwater modellingGeological and geotechnical field investigations

Instrumentation Route corridor studiesCommissioning system components

Process selectionProcess modelling and selection

Coastal management

Water demand/loss management and conservation

Bulk infrastructure implementation planning

Continuous rainfall-runoff modelling

Fluvial geomorphologyDesign flood analysis – deterministic and probabilistic

Laboratory testing & analysis

Operation and maintenance manuals

Life cycle costing and business case

Hydraulic and operational performance evaluation

Water treatment for potable and industrial use

Equipment selection Coastal modelling

Implementation of environmental water requirements

System operating rule design and optimisation

Surface water quality monitoring, assessment and modelling

Sedimentation studies Flood-line determinationDesign of all embankment types

Emergency preparedness plans

Gravity pipeline systems and pressure mains

System maintenance and optimisation

Optimisation of chemical dosing, rapid mixing and flocculation

Nutrient removal Oceanography

Water balances at local, regional, national and trans-boundary scales

Managed aquifer recharge (MAR)

Hydrogeology/ Geohydrology

Environmental water science

Flood risk/hazard assessment and management

Intake structures & spillways

Dam-break analysisWater hammer and surge analysis

Odour monitoring and control

Selection of solids-liquid separation unit and appropriate loading

Sludge management

Water resources reconciliation strategies for bulk systems/headworks

Aquifer storage and recovery (ASR)

Groundwater modelling, including water quality

Advanced modelling (CFD; Physical laboratory models, etc.)

Bulk stormwater drainage master planning

Grouting and erosion control

Dam safety inspectionsComputational fluid dynamics analysis

Rehabilitation and replacement advice

Filtration by media and membranes

Instrumentation and control

Integrated water resources management strategies

Water re-use, recycling and reclamation

Water resources system analysis and stochastics

Water demand modelling

Design and rehabilitation of all types of stormwater structures

HydropowerCompliance with Dam Safety Regulations

Pump station structural, mechanical, electrical design

Leakage managementDisinfection of treated water

Assistance with commissioning

Verification and validation of water use

Pollution impact assessment – surface and groundwater

Design flood hydrologyWater-sensitive urban design

Numerical and laboratory hydraulic modelling

Diversion tunnels Dam rehabilitationGeotechnical and tunnelling

Desalination and reverse osmosis

DAF and DAFF

Water allocation assessment

Climate change assessment and adaptation – surface and groundwater

Design of flood warning systems

Information management and decision support systems

Stormwater treatmentGates and flood controls

Materials science and corrosion control

Control of concrete aggression and metal corrosion

Odour control

Institutional and policy development and support

River hydraulics and 1D/2D hydrodynamic modelling

Mine stormwater management

Sludge treatment and disposal systems

Industrial effluent pre-treatment and disposal

Erosion protection and river engineering

Recycling of recovered water

Membrane bio-reactors (MBR)

Canal design and rehabilitation

Instrumentation and control of the treatment works

Biological oxidation of metal ions

Materials science/corrosion

8 Aurecon Water

Global success stories

Adelaide Desalination PlantAustraliaClient South Australian Water Corporation

The Adelaide Desalination Plant is a 100 gigalitre per year plant augmenting Adelaide’s potable water supplies. The plant uses salt water reverse osmosis technology and includes inlet conduit and brine outfall to the ocean and a 10 kilometre transfer pipeline to the Happy Valley Water Treatment Plant.

Aurecon was engaged to provide technical advice to the client including process design, civil, structural, mechanical and electrical engineering advice, tunnel design and advice, and power supply investigations. Aurecon also coordinated geotechnical and environmental investigations including marine, terrestrial and toxicology studies.

Vaal River Eastern Sub-system Augmentation Project (VRESAP)South AfricaClient Trans Caledon Tunnel Authority

The VRESAP is an emergency water transfer scheme to abstract water from the Vaal Dam and pump it to the Knoppiesfontein division structure over a distance of 115 kilometres. Aurecon was appointed to provide design, tender and contract administration services, as well as supervise construction of all the civil engineering components.

The project has a design capacity of 5.4 cubic metres per second and consists of abstraction works in the Vaal Dam, a low lift pump station and a high lift pump station. The low lift pump station has four duty and two standby 700 kilowatt pumps, transferring flow through a total head of 29 metres to a balancing dam and desilting works upstream of the high lift pump station. The high lift pump station is equipped with one standby and three duty pumps containing two pumps per set. The project also entails a single 1.9 metre diameter rising main covering a distance of 115 kilometres.

Melbourne Main Sewer Replacement (MMSR) ProjectAustraliaClient Melbourne Water Corporation

One of the most complex and challenging sewerage tunnelling projects undertaken in Australia, this project replaced the existing 110 year old Melbourne Main Sewer with a new 2.4 kilometre long gravity sewer underneath Melbourne’s inner city and the Yarra River. As Project Manager, Contract Superintendent and Contract Administrator, Aurecon helped deliver the MMSR project from the planning and design phase through to the completion of all major construction works in May 2012, safely, on time and 5 per cent below budget.

The tunnel was constructed using an Earth Pressure Balance Machine with a 2.4 metre internal diameter segmental concrete lining with a secondary lining of glass fibre reinforced plastic (GRP) to provide a finished internal diameter of 1.8 metres. Six permanent tunnel access shafts were provided and 1.9 kilometres of new branch and reticulation sewers were constructed by pipe jacking methods to connect existing sewers to the new sewer tunnel. The challenging crossing of the Yarra River was completed using an innovative temporary sheet pile cofferdam method to lay 140 metres of 2.4 metre diameter steel sewer pipe on the river bed.

Our expertise and industry knowledge have been developed on projects around the world, allowing our teams to develop detailed localised knowledge of the 80 plus countries in which we have worked.

9Aurecon Water

Maguga Dam (above image)

SwazilandClient Komati Basin Water Authority

Maguga Dam supplies water for irrigation and domestic use in Swaziland and South Africa. The 115 metre high clay core rockfill dam features an innovative ungated labyrinth type spillway with a 100 metre wide concrete lined chute ending in a deflector bucket, discharging into a 40 metre deep plunge pool.

Aurecon assumed a leading role in both design and project management. A detailed geotechnical site investigation was undertaken by Aurecon to supplement data from feasibility studies. After consideration of technical and cost factors, a rockfill embankment was selected as the most suitable construction method.

An innovative design feature included a curved ungated labyrinth spillway (one of the largest of its type in the world) that enabled the full width of the spillway to be reduced from 460 metres to 181 metres. From there, a 310 metre long concrete lined chute ends in a 100 metre wide deflector bucket discharging into a 40 metre deep plunge pool.

A full environmental impact assessment was carried out and a comprehensive mitigation plan was strictly followed to minimise the adverse effects of construction on the surrounding physical and social environment.

Joint Maputo River Basin Water Resources StudySwaziland, Mozambique and South AfricaClient Tripartite Permanent Technical Committee (TPTC)

The Governments of Mozambique, South Africa and Swaziland have been collaborating to jointly develop the shared Maputo River Basin through the TPTC. The TPTC is responsible for providing advice to the three co-basin states on the equitable utilisation and management of this shared resource. An Interim Agreement was developed as the framework to facilitate this, but a comprehensive Agreement is required. That Agreement will be informed by the findings of the Joint Maputo River Basin Water Resources Study (JMRBWRS).

Aurecon was commissioned to take a leading role in the execution and management of the JMRBWRS. The study provided a detailed water resources assessment, as well as recommending management and development options. These were presented as Water Resource Management Scenarios, with the goal of providing a framework for the planning, development and management of a sustainable water resources system.

10 Aurecon Water

We strive for excellence in our client relationships and our project delivery, working in partnership with our clients to deliver innovative solutions. While our results and client satisfaction speak for themselves, we are proud to receive international industry recognition of our achievements.

WinnerInstitute of Municipal Engineering of Southern Africa Biennial Project Excellence Awards 2010 Category: Community UpliftmentGeorge Municipality Emergency Reuse of Treated Effluent South Africa

Following a severe drought in the George Municipality area of South Africa, a scheme was implemented for the indirect reuse of treated effluent. The aim of the scheme was to ensure a sustainable supply of raw water to meet potable water demands in the region. From a resource perspective, the indirect reuse of treated effluent is not only an environmentally sustainable approach but also an economically sustainable one, as water that has already been collected from natural raw water resources can be reused without the need to develop new natural resources.

Water can safely be continually recycled and blended with new natural raw water to reduce the demand on other natural water resources. The scheme can provide almost 45 per cent of the current water demand to the town of George, relieving pressure on the existing raw water systems.

Gold AwardACENZ Innovate NZ Awards of Excellence 2011 Category: InternationalWatercare Project Hobson New Zealand

An ageing sewer pipe crossing Auckland’s Hobson Bay was replaced with a three kilometre long, 3.7 metre diameter tunnel. A new six cubic metres per second pump station was constructed in the Orakei Domain.

Aurecon was involved in all of the preliminary and detailed design for the project. Tunnelling technologies never before seen in New Zealand were applied to the project. Innovative approaches to vortex drop shaft arrangements, grit control and pump station design were required due to the challenging site conditions.

The upgrade provides for population growth in the area and will increase recreational opportunities in the bay. The tunnel’s extra capacity will reduce wet weather overflows, resulting in improved environmental outcomes.

Gold AwardACENZ Innovate NZ Awards of Excellence 2011Rosedale Wastewater Treatment OutfallNew Zealand

To protect and improve the quality of Auckland’s beaches, a new tunnel and outfall was constructed which allows treated water to be discharged 2.7 kilometres offshore, compared to the previous distance of 600 metres.

Aurecon delivered all of the detailed design for the tunnel, the marine outfall pipe and the 38 metre deep cascade drop shaft, which was the first use of a cascade in New Zealand.

The hydraulic design required an analysis of air entrainment, initial dilution, headloss and saltwater expulsion issues for the treated effluent discharge, and shear stress and flow characteristics. The transition riser was a critical asset and was designed to improve flushing and to facilitate maintenance operations using a 3D computational fluid dynamic model.

Award-winning innovation

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Winner Consult Australia WateReuse Awards 2011 Awards Category: InternationalLuggage Point Advanced Water Treatment PlantAustralia

The Luggage Point Advanced Water Treatment Plant formed part of the Western Corridor Recycled Water Project, the largest recycled water scheme in the southern hemisphere.

Aurecon provided multidisciplinary engineering design, design management, construction support, commissioning support and operator training to the Alliance. Aurecon also undertook plume dispersion modelling and detailed design of the reverse osmosis concentrated marine outfall.

The intake structure was designed to maintain continuous operation of the existing wastewater treatment plant and to enable complete capture of effluent during low flow periods.

Berg Water ProjectSouth Africa

Undertaken to augment the water supply of the Western Cape region of South Africa, Aurecon provided extensive input to this significant project as a member of the Berg River Consultants joint venture. The project consists of the Berg River Dam (a 62 metre high concrete faced rockfill dam), the Berg Supplement Scheme comprising two pump stations with capacities of up to six cubic metres per second and an abstraction works including a weir, sediment exclusion works and balancing dam as well as 12 kilometres of steel pipelines, up to 1 500 millimetres diameter.

Particular innovations in the dam design include dynamic compaction of alluvial deposits in portions of the dam foundations and the use of articulated slabs with special water-stop features to cater for potential differential settlement. An exceptional features of the outlet works is their ability to mimic periodic natural floods of up to 200 cubic metres per second that are necessary to mitigate the impact on the ecology and morphology of the river.

Premium AwardInternational Association of Impact Assessments, South Africa Chapter 2009Winner Fulton Concrete Technology Awards 2009 Category: Civil EngineeringWinnerConsulting Engineers South Africa Awards 2008 Category: Technical Excellence in Large ProjectsBest Project South Africa’s Construction World Awards 2008 Category: C – Public Private PartnershipsWinnerSAICE Western Cape Regional Awards 2007 Category: Technical ExcellenceWinnerSAICE 2007 Category: Most Outstanding Civil Engineering Project

Katse Dam Lesotho

Contact us

Registered office, Singapore152 Beach Road #22-02 Gateway East Singapore 189721 T +65 6256 6188 E singapore@aurecongroup.com

Registered office, AustraliaMelbourneAurecon Centre Level 8, 850 Collins Street Docklands VIC 3008 Australia T +61 3 9975 3000 E melbourne@aurecongroup.com

Registered office, South Africa TshwaneAurecon Centre Lynnwood Bridge Office Park 4 Daventry Street Lynnwood Manor 0081 South Africa T +27 12 427 2000 E tshwane@aurecongroup.com

About AureconAurecon provides engineering, management and specialist technical services for public and private sector clients globally. The group, with an office network extending across 25 countries, has been involved in projects in over 80 countries across Africa, the Americas, Asia Pacific and the Middle East and employs around 7 500 people throughout 11 industry groups. We seek to foster human achievement in all aspects of our work.

Aurecon offices are located in:Angola, Australia, Botswana, China, Ethiopia, Ghana, Hong Kong, Indonesia, Lesotho, Libya, Malawi, Mozambique, Namibia, New Zealand, Nigeria, Philippines, Qatar, Singapore, South Africa, Swaziland, Tanzania, Thailand, Uganda, United Arab Emirates, Vietnam.

For more information please visit www.aurecongroup.com

Aurecon South Africa (Pty) Ltd is a certified Level 3 BBBEE contributor.

The Aurecon Group is made up of a number of separate legal entities operating across diverse jurisdictions. Not all those entities provide services to clients.

©2013 Aurecon

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