GHD June 2001 No. 112 NEWS Hobart Federation Concert Hall Alliance with Knight Frank RAPI excellence award Salinity management in SA and NSW Contents Strategic alliance with Knight Frank June 2001 No. 112 INNOVATION Alliance, Energy supply, RAPI award 2-3 ENVIRONMENT Audit training, Woodchip venture, Salinity in SA and NSW 4-5 WATER Qld distribution, Murray River trunk main, Boat sewage pump-out, Nestlé wastewater, Cape York microfiltration, Upgrades for Werribee 6-9 COMMUNITY INFRASTRUCTURE 10-14 Brisbane pool, Hobart Concert Hall, Apartment construction, Waste guidelines for units, Auckland property developments, Melbourne market, Hunter complex MINING Kalimantan gold mine, ARD dam, Research, Land audits 15-16 ENERGY Asset survey 17 DEFENCE & SECURITY Night training 17 INDUSTRY Food processing, Newcastle steel cold mill 18 TRANSPORTATION Upgraded SCATS in Perth 19 COVER PHOTO: A double elliptical shell and acoustic outer wall eliminate external noise in the Hobart Federation Concert Hall. Inside GHD has combined leading edge energy-saving technology with innovative structural, mechanical and electrical designs. See article on page 11. (Richard Eastwood – photographer) GHD News is a free publication published by GHD Pty Ltd. Copies are sent to clients, staff and colleagues. GHD News articles can also be accessed on our website. Please send inquiries and comments to: GHD Corporate Marketing Services 10 Bond Street Sydney, NSW 2000 Australia Tel Fax Eml Web 61 2 9239 7100 61 2 9239 7199 wholdenson@ghd.com.au www.ghd.com.au Wendy Holdenson, Editor Alan Raby, Assistant Editor Nigel Dique, Writer Heywood Branding & Communication, Design & production © GHD Pty Ltd ISSN 0817-3346 2 | GHD NEWS | ISSUE 112 GHD has formed a strategic alliance with international property consultants Knight Frank to offer more comprehensive asset and facility management services. Knight Frank and GHD are recognised as market leaders for services which relate respectively to property, and infrastructure and engineering. Both companies have common cultural and operating goals, including international standards of service across all world markets and the delivery of innovative and superior client service. As key members of a project team, they recently completed a successful asset management project for the Queensland Government. The task entailed the design, development and implementation of a web-based system which provides a best-practice framework for the management of assets at all levels of government. The Government has granted the firms an exclusive licence to market the system, known as GAMS (Government Asset Management System) in Australia and overseas. Marketing will be through a jointly owned company, Innovative Strategic Management. GHD Managing Director Ken Conway says: “The alliance reinforces GHD’s Strategy 2000, particularly the development of mutually beneficial alliances, operating as a global business and providing project delivery. The foundation of the alliance is our commitment to putting clients’ needs first.” GHD Facilities and Asset Management Manager Brendan Sowry will be responsible for managing the new alliance and marketing the GAMS system. Knight Frank Executive Chairman Robert Hannington says the firms’ collective knowledge is a powerful and appealing proposition to any client whose business is reliant on the effective performance of tangible assets. “We are very proud that GAMS is recognised by the industry as Best Known Practice. We recognise the importance of a single point, and consistent and quality service delivery.” GAMS is being actively marketed to state governments and internationally. What happens if the lights go out? The dramatic effects of loss of power to a city were seen several years ago in Auckland and more recently in California. To guard against such possibilities, the reliability of power transmission networks for Sydney’s CBD and inner suburbs are to be augmented by increasing both the system’s capacity and ability to switch around any problems. The city’s growth has been accompanied by increasing demand for electricity, putting pressure on existing capacity. Following a joint study by Transgrid and Energy Australia, capacity is to be increased with the construction of up to eight new 132-kilovolt cable circuits under the city. Circuits will be installed to connect existing substations with a new Transgrid substation in Haymarket and a new Energy Australia substation in Surry Hills. GHD completed a feasibility study which confirmed an accessible tunnel was the best option for Energy Australia to convey the new cable network. The firm has also carried out geotechnical investigations, concept design and risk management studies, developed design and construct tender documentation and will assist with registration and short listing of tenderers. An Environmental Impact Statement is also being finalised. Eight 132-kilovolt cable circuits will run in a new tunnel beneath Sydney’s Hay Street. ‘Smart growth’ project wins planning awards A strategy for sustainable urban growth in Sydney’s south-west has won two awards by the Royal Australian Planning Institute (RAPI) of NSW. Developed by GHD in partnership with Liverpool City Council, the strategy is now recognised as a model for future urban development. It integrates town planning, social and community planning, transportation and services infrastructure for sustainable communities. The entry ‘Smart Growth in Sydney’s South West – Creating Communities’ beat 20 nominations to win an award in the category of ‘plan making and strategies by local government’. It was then selected from 50 nominations to win the President’s Special Award for overall planning excellence – the top award. GHD was commissioned by Liverpool City Council in December 1999 to undertake the “Developing Sustainable Communities” strategic planning project. This formed the foundation for Council’s Smart Growth strategy. The aim was to prepare an integrated urban development framework (structure plan) for three major new urban release areas in Liverpool. The three sites have a total area of about 1,500 hectares and a potential population of over 50,000 people. “The approach will achieve sustainable development through better planning, and improve the quality of life of residents,” says GHD Project Director Tom Pinzone. An integrated urban development in Liverpool, Sydney, will reduce the impacts of urban sprawl. ISSUE 112 | GHD NEWS | 3 Woodchip venture to boost local WA economy Training courses in environmental auditing GHD has joined forces with the Systems 3 Group to provide training courses in environmental management systems (EMS) auditing. A $50-million environmentally friendly woodchip venture near Albany is expected to create more than 1,000 jobs over the next four years. About 230 jobs will be created immediately in harvest, transport, mill, rail and port operations, with the remainder throughout the region as the economy grows. Locally grown plantation timber will be milled to provide woodchips for export to Japan – estimated at up to one million tonnes by 2007. The plantations will be re-established after harvest, bringing benefits to the region’s economy and helping to fight salinity and soil erosion. GHD is assisting the Albany Plantation Export Company with the design, documentation and construction supervision of a $10-million timber mill, 20 kilometres north of Albany. The company is a joint venture between Oji Paper and Itochu, leading Japanese corporations. “All aspects of the design and management had to be carried out within tight time frames and according to Environmental Protection Authority requirements,” says GHD Project Manager John Stocco. The woodchips will be transported by rail from the mill to upgraded facilities at Albany Port. The first shipment of woodchips is scheduled for delivery to Oji’s Nichinan paper mill in Japan in the last quarter of this year. Between 300,000 and 400,000 tonnes are expected to be exported in the first two years of operations. 4 | GHD NEWS | ISSUE 112 Waste Management and Environment magazine ran advertisements on the new EMS training course. An increasing number of organisations today are embracing environmental responsibilities, requiring the implementation of EMS. In turn this has prompted a growing demand for certified environmental auditors. GHD was invited by the Systems 3 Group to assist with the development and presentation of the Advanced (EMS) Auditor Training Course. The course has been approved by the Institute of Environmental Management and Assessment (IEMA) and meets the training requirements for participants to be registered as an Environmental Auditor with the IEMA scheme. Besides environmental professionals, the course is recommended for: ◗ senior managers who wish to gain a detailed understanding of how to apply a systematic approach to managing the environmental performance of their organisation; ◗ people with a limited environmental management background but who coordinate the operation of an EMS within their organisation; ◗ quality and safety auditors wishing to expand their skills; ◗ people who conduct internal and external EMS audits. Participants learn how to effectively plan, undertake and follow up internal and external EMS audit tasks; perform gap analysis audits against ISO 14001:1996; and apply the audit process as a business improvement tool. Areas covered include techniques to identify environmental aspects and impacts, environmental legislation, environmental risk assessment, life cycle analysis, environmental performance measurement and pollution control and abatement. The course has also been submitted to the Quality Society of Australasia (QSA) for approval to meet the QSA’s training requirements for Environmental Auditor certification. Current and future participants have a unique opportunity to register under either or both the QSA and IEMA schemes. Further information and course dates for the Advanced (EMS) Auditor Training Course are available at www.systems3.com.au, or by contacting Chris Owen at cowen@ghd.com.au. Salt flushing system for Barossa vineyard A drainage scheme at a premium vineyard in South Australia’s Barossa Valley aims to reduce destructive salinity caused by a rising water table. “Services included contract negotiation, landholder-client consultation, and the supervision of trenching, drain coil installation, backfill placement, and installation of sub mains to the pump-out tank. Measures previously identified to combat the salinisation included the installation of perimeter drains and dewatering wells. GHD Project Manager Rick Aldam explains, “Our solution was to install drains in each vine row to below the root zone, connection to collection mains to remove the saline water and direction to a holding tank for eventual removal to wastewater lagoons. “A water flushing system was specified to flush out the accumulated salts from the soils so vines can be re-established. The system has been modified to utilise the existing vineyard dripper irrigation system. “The landowner anticipates the replanting of the vineyard in October 2001.” Rick Aldam At low-lying locations, salt scalding was evident, accompanied by loss of grass cover and other vegetation and some death of vines and native trees. Drains were installed below the vines’ root zone at an existing vineyard. Salinity review for Lake Victoria A salinity review has identified a strategy to achieve long-term improvements in land and water management in the Lake Victoria area of western NSW. Water enters the lake via Frenchman’s Creek, a small tributary of the Murray River and, when required, is released under controlled conditions back to the Murray via Rufus River, another small channel. The review, prepared by GHD, is part of the Lake Victoria Rangelands Study, a precursor to the Lake Victoria Rangelands Management Action Plan. The lake is a significant water storage in the Murray Darling system. It is filled during periods of high flow and water is released to South Australia during low flow periods or at other specified times. The strategy proposes the optimising of flows in Frenchman’s Creek to reduce the volumes of water leaking to the water table, and a dewatering well field near the lake to maintain groundwater levels below the land surface. Rick Aldam The focus for the review is land holdings fronting the lake and Frenchman’s Creek, a number of which are experiencing degradation and loss of production due to salinisation. In preparing the strategy, GHD reviewed the work of a number of earlier studies, and collated and reviewed available groundwater monitoring data supplied by the Department of Land and Water Conservation (NSW). The firm also conducted extensive consultation among landholders. Degraded land north of Frenchman’s Creek is the focus of GHD specialists. (Salinisation in the Rufus River area is controlled by the pumping of salty water from groundwater interception bores to disposal basins located to the west of Lake Victoria.) The review recognises the importance of land surrounding Lake Victoria in terms of cultural heritage, agriculture, and environmental and landscape values, as well as the need to maintain security of supply for South Australian water users. ISSUE 112 | GHD NEWS | 5 A review of irrigation systems in Queensland will help planners achieve significant improvements in water distribution efficiencies. The review, completed in April, covers the major irrigation areas of Bundaberg, Burdekin River, Emerald, Eton, Dawson Valley, St George, Lower Mary River and Mareeba Dimbulah. Major crop types include cotton and sugar cane. Kristina Sestokas Water use review aims at efficiencies The Weemah main channel downstream of Fairbairn Dam in Queensland’s Emerald irrigation area. It was conducted by GHD for the Department of Natural Resources and Mines (DNRM) and funded under the Rural Water Use Efficiency Initiative. Management and operation of the areas are the responsibility of SunWater, a privatised enterprise. “The methodology we developed provides a uniform basis for efficiency determination, performance assessment and establishment of improvement targets for loss minimisation in all irrigation schemes,” says Project Manager Kristina Sestokas. Water balance data collected from the operators of the different schemes enabled determination of both actual and theoretical distribution system efficiencies for all sub-system components. Stretch across WA’s Murray River A 400-tonne crane was used to hoist a massive water pipe into position across the Murray River near Pinjarra, just south of Perth, as part of the Stirling Dam to Tamworth Reservoir trunk main project. Western Australia’s largest mobile crane placed the pipeline over the Murray River in one span. The 37-tonne, 1400 millimetre pipe spans 50 metres between reinforced concrete piers. 106 kilometres south of Perth, to the Tamworth Reservoir on the outskirts of the city. welded together to form the bridge. Reinforcing plates were used over the supporting piers. It was specially constructed to carry a full load of water and survive pressure tests, thermal effects, wind loading, seismic loads and debris loading from a flood event. Allowance was also made for a walkway on top. For the Murray River crossing, a structural combination of arch and continuous span was chosen to satisfy environmental, native title, landowner and aesthetic concerns. Backspans 20 metres long return the pipe underground. Construction of the pipe bridge was delayed first by bad weather and then by concern over the capacity of the ground to support the weight of the crane, the State’s biggest mobile crane. GHD, design consultant for the Western Australian Water Corporation, designed the entire pipeline, which will transfer water by gravity from the Stirling Dam, 6 | GHD NEWS | ISSUE 112 The pipe was constructed in a series of two and three-metre sections and rolled into ‘cans’ which were then The project proceeded smoothly, with GHD lending technical site assistance. The Stirling Trunk Main, costing $109 million, was completed on time and under budget. Pump-out innovation for cleaner waterways Innovative yet inexpensive boat sewage pump-out systems designed for the Port Stephens-Myall Lakes area of NSW are likely to be adopted elsewhere in the State. GHD prepared the design for Port Stephens Council and has since been commissioned by the Department of Land and Water Conservation (NSW) for a site at Batemans Bay. Following an outbreak of Hepatitis A in February 1997 in Wallis Lake, Forster, the Federal Government, through the Natural Heritage Trust Coast and Clear Seas Program, allocated funding to improve water quality in the tourist haven of Port Stephens. The amount included $406,000 to Port Stephens Council to set up boat waste pumping stations. Funding was also provided by the Department of Land and Water Conservation and NSW Waterways to support the project. Current NSW Government regulations prohibit the discharge of sewage from boats into waterways such as Port Stephens and Myall Lakes. Port Stephens Council required a jetty or pontoon-based ‘slops hopper’ receptacle to accept waste from portable chemical toilets and to combine with another system to empty on-board holding tanks. Sewage from the system was expected to be pumped to an on-shore holding tank and then to the local sewage system. Five sites were identified, with facilities at three to be built immediately and the remaining two to follow depending on funds. After winning an open tender to develop designs for sites at Tea Gardens, Nelson Bay and Soldiers Point, GHD visited existing facilities and held consultations with parties-at-interest. The designs by GHD led to construction costs well below budget, allowing a second round of facilities, for Lemon Tree Passage and Karuah, also designed by GHD. The GHD design incorporates a pump system with excellent suction characteristics. This means the pumps can be located remotely, providing more space on the jetties or pontoon stations and obviating the need for on-shore holding tanks. Two pumps with equal capacity accept wastes from either source and a switching facility alternates each pump per cycle. This arrangement ensures the boatwaste installation is serviceable in the event of one pump failing. Remote sensors trigger automatic flushes and pump operation of the slops hopper, minimising odours. Users of the boat pump-out only have to press a start button – the system automatically turns itself off after a pre-selected time. GHD’s new boat waste pumping station has found wide favour in NSW. ISSUE 112 | GHD NEWS | 7 Food giant Nestlé Australia aims to achieve world’s best practice in environmental management, which it regards as important to market success. Jonathan Crockett Nestlé action on environment GHD wastewater specialists have provided strategic advice at Nestlé plants. the application of NEMS. Some work will also be undertaken for Nestlé Pacific Islands. A key project is to assist with the application of the Nestlé Environmental Management System (NEMS) among its 32 sites in Oceania. The process entails GHD environmental auditors going to the plants and other sites to conduct environmental audits. They also assist plant managers to set up appropriate objectives and action plans. The firm has also assisted with training and site risk assessments. The plants process raw materials such as milk, cocoa beans and coffee beans into a wide range of products with household names such as Nescafé, Milo and Nestlé Peters ice cream. GHD has been engaged by Nestlé Australia to provide environmental management and engineering services, including assisting with minimisation of waste and proper wastewater treatment. GHD wastewater specialists are providing strategic, plant upgrade and operations advice by: ◗ regular review of, and reporting on, compliance and operating problems; ◗ periodic visits to assess operating practices and identify improvements to treatment facilities; ◗ assistance with implementing Food plants generate considerable wastewater, and one of the manufacturer’s priorities is the such improvements as environmental approvals and community consultation. Clean drinking water for Cape York communities Installation of a microfiltration plant in Bamaga, 30 kilometres south west of Cape York, will ensure clean drinking water for 2,500 indigenous people occupying the northern peninsula. Andrew Jackson The water supply for the communities in the area is drawn from the Jardine River, which runs perfectly clear for much of the year and then becomes muddy following seasonal rains. No more protozoa are in the local water of one of Queensland’s most remote indigenous communities. 8 | GHD NEWS | ISSUE 112 Investigations showed the river water presented a health risk due to the presence of protozoa and other pathogens. In these wet months, the communities are isolated and accessible only by aircraft or barge. Microfiltration was chosen as the preferred technology because of its robustness – previously only boiling could guarantee clean drinking water. GHD, on behalf of the Queensland Government, evaluated bids from a number of microfiltration suppliers, developed the detailed design and managed the project on site. “We were able to draw on our extensive experience with the technology in other parts of Australia and South East Asia. “Our experience working on remote northern Australia community projects, using local contractors was also of great benefit,” says GHD Project Manager Anne Lavers. Lagoon upgrade to help Port Phillip Bay Melbourne Water has brought into service the first of three major lagoon system upgrades. A key benefit is reduction of nitrogen load in Port Phillip Bay. How Melbourne redeemed its name The Western Treatment Plant, previously known as the Werribee farm, was established in the 1890s. Jonathan Crockett “In those days deaths from cholera and typhoid were common in Melbourne, earning the city the nickname ‘Smelbourne’,” says GHD Project Manager Jonathan Crockett. GHD’s Robbert van Oorschot and Jodi Kerr on an inspection visit of the aeration basin at Werribee. A CSIRO ecological study of the bay identified nitrogen as affecting algal and dinoflagellate blooms. In addition to improving the quality of discharge, the upgrades, at the Western Treatment Plant at Werribee, are designed to increase system capacity, allow decommissioning of odour-producing processes and provide water for reuse. The Western Treatment Plant is one of two major wastewater plants in Melbourne. It treats on average 500 megalitres a day from a population of two million, as well as much of Melbourne’s industrial wastewater. GHD has a three-year assignment to provide process design and commissioning services, and early performance review for the upgrade program. The firm brought together an international team of experts to identify, shortlist and develop an innovative and cost-effective upgrade strategy. The treatment process adds a simple, low-cost activated sludge plant to existing lagoons in a way which maximises their treatment capacity utilisation and achieves the right effluent quality targets. It also should allow the capacity of the lagoon system to be increased by 190 per cent. Energy consumption is half that of a conventional activated sludge plant and will be further reduced by a biogas-fired generation facility constructed by AGL. “It was far-sighted of the authorities to set aside such a large area of land – around 10,000 hectares – 40 kilometres from the city for land-farming of raw sewage. Land-based technology was leading edge at the time, and the processes used were arguably more ecologically sustainable than those of the typical modern sewerage plant. “The system was augmented with treatment lagoons in the 60s and 70s as Melbourne grew rapidly. The plant is an excellent example of how progressive generations of engineers, by planning for the long term, minimise cost and maximise benefit to the community.” The first lagoon system has a capacity of 190 megalitres a day and is designed to achieve a total nitrogen concentration of less than 10 milligrams a litre and ammonia-nitrogen concentration of less than three milligrams a litre. The capital cost is $28 million, a fraction of that for more conventional processes. Plant commission started in April with three million litres of seed sludge imported from a major treatment plant operated by Barwon Water. Digging the mains over 100 years ago laid the foundation for better health. ISSUE 112 | GHD NEWS | 9 Aquatic Centre combines comfort, colour and light The Caboolture Regional Aquatic Leisure Centre north of Brisbane pays particular attention to human needs – both recreational and competitive – with architecture that combines advanced energysaving concepts with aesthetics and durability. A ‘fun in water’ theme extends throughout the leisure complex in Brisbane. “The Caboolture Shire Council wanted a friendly, lively environment that would persuade visitors to return. We achieved this with the arrangement of the buildings, the choice of colours and people-friendly spaces,” says GHD architect John Wachsner. mechanically ventilated for comfort. The truss is isolated by a fully insulated, fibre-cement ceiling to minimise both the potential for corrosion and the cost of maintenance. Key structures of the $8-million centre are a 37-metre single-span building housing a heated 50-metre 10-lane pool, 1,000-seat grandstand and heated 25-metre pool. “The roof curves to meet large open doors to create an indoor-outdoor space enhanced by natural lighting through translucent skylight sheeting,” says Wachsner. “The skylights are doubleglazed to keep out the summer heat. A natural cross-flow of air ensures comfort in the change rooms. Frog comes to life Other features are a 600-square metre outdoor leisure pool in the shape of the extinct Wallum Froglet; tennis and beach volley ball courts; main building with change rooms, crèche, kiosk, shop, gymnasium and function rooms; and manager’s residence. GHD’s approach, in providing architectural and engineering services, was to balance the functional requirements with a natural environment. The main pool enclosure uses a curved steel triangulated lattice truss supported on a concrete ring beam and columns, 10 | GHD NEWS | ISSUE 112 Heat control and cost “Operating costs are minimised by a solar pool heating and backup electric heat pumps. The pool plant has separate filtration, heating and disinfection systems for each pool, enabling any to be taken out of service without affecting the operation of the other two. “Colour was a key design consideration, discussed in detail with the client. A concern was that the centre, which represents the first stage of a larger sporting complex in a heavily landscaped area, would combine harmoniously with later projects. “Earthy colours were chosen to complement the landscape. The external blockwork combines terracotta and wheat tones, with the steelwork in black and the roof a standard Torres blue. Inside, the ceiling is off-white and the internal areas a light cream to reinforce the sense of openness. “A ‘fun-in-water’ theme extends throughout the site, with different coloured circles in the concrete paths representing bubbles of water.” The centre provides for the needs of the disabled with a main pool hoist, wheelchair ramp to the warm-up pool, beach entry into the leisure pool, and graded surrounding concourses. A moveable bulkhead in the main pool – unusual for a 10-lane pool – enables division into two 25-metre areas for training or recreation. Hobart Concert Hall delights audiences The Tasmania Symphony Orchestra opened its season of concerts in its new home – the new Hobart Federation Concert Hall – passing the audience test with flying colours. and public sector partnering provided funding, which included a grant from the Commonwealth Government’s Federation Fund. The 1,100 seat Concert Hall, an extension to the Hotel Grand Chancellor, is remarkable for the use of advanced systems designs to deliver acoustic excellence, physical comfort and ambience (see front cover). The Concert Hall provides an international standard venue for the Tasmanian Symphony Orchestra and more extensive conference and convention facilities for the new owners of the Hotel Grand Chancellor. GHD provided all services, which had to be designed within rigorous environmental and aesthetic parameters. The building is designed as a double elliptical shell with an acoustic outer wall to eliminate road noise and an inner shell with concrete walls and roof. The air conditioning system is driven by energy-efficient hydrothermal technology tapping into sewage wastewater as the heat sink source. A computer-based management system maintains the internal environment settings and optimises energy consumption under changing demands. The system uses quiet under-seat The function and conference centre accommodates up to 1,100 people. positive displacement air distribution systems for occupant comfort. All systems were noise engineered using reverberation pits, acoustic duct treatments, acoustic attenuators and vibration isolators and fixings. Lighting systems provide flexibility for the varying use of the concert hall, and specialist power and TV cabling provide for the ABC’s live outside broadcast service. GHD also provided the project management and engineering services when the hotel was developed in 1985. The Tasmanian Symphony Orchestra takes a bow in its new home. Structural elements were designed to maintain critical reverberation times and feature prominently as part of the interior design, with its curved painted concrete walls and open triangular steel roof trusses. All the facilities were built within a budget of $16 million, considered tight compared with similar sized concert halls elsewhere in Australia. Private The Concert Hall integrates well with the hotel and function centre. Under-seat positive displacement air distribution systems give extra audience comfort. ISSUE 112 | GHD NEWS | 11 Innovative design cast in concrete Innovative plumbing design was used to resolve a height restriction issue affecting construction of a luxury apartment tower on Queensland’s Sunshine Coast. The Catalina apartments comprise two towers facing the Pacific Ocean. The first stage, designed by GHD for Forrester Kurts Properties, was completed 10 years ago. Second-stage construction was suspended when the market faltered, leaving only basement walls and columns on piled foundations. Last year the market rebounded and a decision was made to resume construction. However, the second tower’s design had to conform to a height restriction of 43 metres above the pavement imposed by Maroochy Council in the intervening period. As it involved a different column layout between the basement and the other floors, the ground floor slab became a post-tensioned transfer slab. Head clearance regulations for vehicles meant plumbing could not be slung in the basement in the traditional way. To provide the requisite basement space, one option was to excavate and build a pump well under the basement – creating serious maintenance issues. Another was to raise the basement ceiling height and therefore the height of the whole building. That would necessitate eliminating one floor level – and its earnings potential – to satisfy Council height regulations. A re-designed post-tensioned transfer slab maintained the value of this seaside apartment block. GHD came up with an alternative: to redesign the post-tensioned transfer slab. This reduced its thickness from one metre to 700 millimetres and cast the sanitary and roof water drainage plumbing within it. The slab’s complicated tendon reinforcement structure relied on three-dimensional coordination by GHD to ensure tensioning did not damage the drainage system. Waste guidelines for new Sydney units Guidelines on waste handling and recycling are to be revamped for new multi-unit dwellings in Sydney. Municipal Councils and Waste Boards want to increase recycling. One certain way to do this is to establish best practice guidelines for all future new unit developments, particularly in the inner-city. The Inner and Southern Sydney Waste Boards and Sydney City Council have commissioned GHD to assist in a review of codes of practice and equipment for waste handling and recycling. Future inner Sydney apartments will be designed for easier waste and recycling collections. 12 | GHD NEWS | ISSUE 112 The aim is to develop best practice design guidelines for developers and checklists for council planners assessing development applications. Of Sydney’s 51 councils, 18 are within the Boards’ jurisdiction. Project Director Frank Castino identifies the key issues as: ◗ lack of space at ground level to store wheelie bins; ◗ inadequate access for collection vehicles; ◗ hygiene and odour control; ◗ contamination of recyclables in the bins; ◗ ongoing education due to high tenant turnover; ◗ lack of incentives to recycle. “We will be applying experience gained internationally in urban waste management projects,” says Castino. Auckland complexes advance in tandem GHD is helping advance two very different Auckland urban building projects – a business park and a residential complex. The 190-hectare Highbrook Business Park is strategically located on the Tamaki estuary near the busy Southern Motorway. It aims to attract business, technology and education tenants and eventually accommodate 12,000 employees in up to 500,000 square metres of floor space. GHD was part of a team of international designers who developed the original concept in 1998 and obtained subdivision concept consent from Manukau City Council. Other statutory consents are now being obtained from Auckland Regional Council to allow construction to proceed in 2002. More than 30 per cent of the area has been set aside as parkland, encompassing the Pukekiwiriki volcanic crater. Low-impact ‘green engineering’ will ensure buildings are unobtrusive. More than 10,000 trees are to be planted, along with 18 hectares of coastal and wetland vegetation. Large wetland areas and lakes will double as stormwater treatment systems. GHD is managing a team of designers, engineers, planners and surveyors for Wickham Developments to take the project from its market garden origins through every stage of development – up to arranging title. Challenges include: ◗ the necessity for treatment of stormwater runoff; ◗ concurrent development of adjacent land by another developer; ◗ integration of dwellings around an GHD has conducted extensive consultation with the tangata whenua (local Maori) to preserve nearly 30 archaeological sites. Garden Court subdivision is a mix of standard lots and high-density residential buildings on 13 hectares near the Auckland International Airport. oil pipeline feeding Auckland from a refinery in the far north. GHD project managed the integration of road and drainage networks between adjoining properties. A water quality treatment pond was built on the adjoining land along with earthworks and services. Garden Court in Auckland is a mix of standard lots and high-density residential development. ISSUE 112 | GHD NEWS | 13 A strategy to revitalise Dandenong’s fruit ‘n veg A five-year strategy aims to revitalise and expand the Dandenong Produce Market in Victoria. The strategy, prepared by GHD for the City of Greater Dandenong, has as its vision: ‘to be the best people’s market in Australia by providing the highest level of friendly services, atmosphere and value to our customers’. The strategy provides for: ◗ expanded market area, truck and customer parking; Dandy Bacon, the figure synonymous with the market’s origins, is the icon for a suburban shopping near Melbourne. ◗ increased hours of operation from The strategy was developed through consultation with shoppers and households in the market catchment and through focus groups, workshops with council officers and the use of stall holder feedback sheets. 2.5 days to five days per week and opening a night market; ◗ market repositioning away from general merchandise (now 75 per cent of the market floor space) to deli and fresh food stalls with an expanded fruit and vegetable area; The city’s CEO Warwick Heine says: “GHD spent six months working cooperatively with market traders, market management and Council preparing a strategy, which provides a collective vision for the market, to be supported by key actions.” ◗ market patronage to be more than doubled; ◗ expansion of the customer base; ◗ increased sustainable rent to Council. Hunter offers Shark a ‘rustic’ golf setting To ensure all goes to plan, GHD has been working closely with the architects to provide solutions to geotechnical and other challenges in the area. The course is part of a $168 million leisure complex known as The Vintage, which will include 482 residential allotments, a 150-room hotel and 375 medium-density apartments and villas. The project is a joint venture between Medallist AMP Golf Holdings and the Stevens Group of nearby Erina. The challenges include: ◗ development of a trunk drainage system to accommodate ‘average recurrence interval’ 100-year flooding; 14 | GHD NEWS | ISSUE 112 ◗ measures to ensure there is no flooding of proposed dwellings or increase in flood levels downstream of the site; ◗ the construction of pools and riffles in the field to reduce velocities in the channels and meet architectural criteria; ◗ handling of highly reactive and dispersive soils, typical of the Hunter Valley. For the trunk drainage, computer models were developed of typical trapezoidal channel sections. Using these sections, designs were prepared in the field to provide a ‘rustic’ feel. Vineyards on the perimeter add to the ambience. Detailed geotechnical design, chemical stabilisation and specific moisture and compaction measures were used to combat adverse soil properties in the Vincent Joseph A golf course designed by Greg Norman in the NSW Hunter Valley aims to blend in with the farm environment. Vineyards on the perimeter of this golf course reflect the Hunter Valley ambience. construction of dam embankments, drainage channels and roads. GHD is working closely with the master planners to develop the subdivision layout and amenity, and to ensure the provision of efficient storm water drainage, water and sewerage services. The firm prepared the initial development application and land sale documentation on behalf of Hunter Valley Estates in 1996. Due diligence reviews at Kalimantan gold mine Kelian Equitorial Mining has undertaken a range of measures to improve storage capacity and management of tailings at its gold mine in Kalimantan, Borneo. GHD regularly carries out due diligence reviews on the tailings storage main embankment. The firm also reviewed tailings deposition methods and recommended substantial changes, which the mine has implemented. Floating pipelines give flexibility for positioning of tailings. These measures improve the storage capacity within the dam and the safe management of potentially acid-forming tailings both pre and post closure. GHD is also carrying out studies of tailings consolidation, seismic evaluation of the main embankment, hydrological evaluation and review of ongoing deposition patterns. GHD funds global research GHD has close links with university research teams in South Africa and Australia to ensure that our professionals in water treatment and dam construction have access to the latest technology. At the University of Cape Town, research is being conducted by GHD’s Dr David DeHaas to develop leading edge modelling of the nutrient reduction process. He will soon complete the assignment by testing and calibrating on site at wastewater treatment plants in Western Australia and Queensland. Acidic flows under control High level research into the safety of embankment and concrete dams has been part funded by GHD for four years A combined attenuation dam and evaporation pond system has improved the control of acid rock drainage (ARD) at BHP Iron Ore’s Mount Whaleback operation in Western Australia’s Pilbara region. at the University of New South Wales in Sydney. A team of PhDs and undergraduates under Professor Robin Fell has been researching Abnormally high summer rainfall resulted in an unusually large volume of water to manage. dam failures around the world, To provide more efficient water management, GHD recently designed a large pond system. The system is linked to the existing containment dam to enable excess water to evaporate. two of the major causes of Two water attenuation dams were also designed to intercept rainfall runoff before entering overburden storage areas. and conducting laboratory tests of “piping” and “cracking”, dam failures. Water from BHPIO’s acid holding dam is pumped to adjacent evaporation ponds. Even though there are another three years of work to complete, GHD is finalising the redesign of the existing ARD containment dam to improve evaporation potential. they have already published a number of technical papers on their findings to date. ISSUE 112 | GHD NEWS | 15 Contaminated land audits in demand Thousands of parcels of land in Australia are unsuitable for development because of contamination. Site clean-ups can cost tens of millions of dollars and far exceed the actual land value. A recent example of a successful major remediation is the former Borthwicks abattoir fronting the Brisbane River and project managed by GHD. Victoria maintains a register of priority sites. In addition, work is progressing to establish databases of sites where Certificates or Statements of Environmental Audit have been issued. The site, which contained hydrocarbons, asbestos fibre, heavy metals and various chemicals, is now being subdivided for industrial use. New South Wales adopted a similar system in the mid 1990s and a register of contaminated sites is maintained. The NSW EPA guidelines for assessment of contaminated sites, including petrol station sites, are used throughout Australia. GHD professionals have become increasingly active as independent auditors for owners, developers and prospective buyers who are anxious to optimise their investment. ACT has a similar approach, and uses auditors appointed by NSW and Victoria. The National Environment Protection Measure (Assessment and Management of Contaminated Sites) adopted Australia-wide in early 2000 provides comprehensive guidelines on whether a site is in a condition suitable for the proposed use. The measure includes guidance on assessing human health and ecological risk from contaminants. Queensland’s EPA maintains two registers of sites. One is an environmental management register which includes all sites where a ‘notifiable activity’ has taken place, or where known contamination can be managed. The other is a contaminated land register where contamination presents an unacceptable risk. South Australia introduced a system in 1995 requiring a ‘Site Audit Report’ independent of any assessment report using Victorian or NSW-appointed auditors. Western Australia has no formal audit system but the Department of Environmental Protection advises on requirements if land is to be redeveloped for a more sensitive use. Tasmania has a Contaminated Sites Database and a proposal to introduce an audit system similar to Queensland where the assessment firm certifies its assessment of the condition of the site. In addition to providing site assessment and remediation services, GHD has its own Environmental Auditor (Contaminated Land) available for advice where required. Auditors appointed in NSW or Victoria are recognised in the other States. The Northern Territory does not require assessment of land for contamination at the moment, although assessment is generally carried out by responsible owners or developers. Legislative snapshot ◗ GHD offers qualified auditing How GHD measures up services Australia-wide; Victoria was the first State in 1992 to adopt a statutory audit system. Planning authorities are obliged to require an audit where potentially contaminated land is to be re-zoned for a more sensitive use. 16 | GHD NEWS | ISSUE 112 is required, GHD can provide an auditor to undertake the statutory audit. The auditor acts independently of the organisations undertaking the assessment of contamination and any remediation; Rachael Elhay An independent audit is becoming normal practice unless there is clear evidence of no past industrial use of land, or the land has been continuously used for residential purposes. ◗ For states where a statutory audit GHD’s Emily Harston takes a sample of contaminated soil for analysis in Melbourne’s Docklands. ◗ Appointed auditors are subject to regular review by EPA NSW and/or EPA Victoria. Electricity asset survey supports fair deal on tax The electricity supply industry has taken the unusual step of conducting a national survey of the ‘effective lives’ of its assets. Home-grown solution to night training dilemma There’s more to night fighting using enhanced vision equipment than meets the eye. Studies show that, without build-up training, troops can suffer side effects like headaches, motion sickness and fatigue. The Department of Defence has decided to build four advanced facilities to enable troops to train during the day or night for night fighting: at Australia’s Royal Military College in Duntroon; Robertson Barracks, Darwin; Enoggera Barracks, Brisbane and Lavarack Barracks, Townsville. The corporatised electricity industry is exploring ways to reduce its tax liabilities. The survey was prepared in response to proposed changes to tax depreciation rules, which could significantly disadvantage many businesses. “The information will help the ESAA in negotiating a fair deal for its members from the Tax Office,” says GHD Project Manager Larissa James. A schedule of the effective life assets is proposed in addition to the recent removal of accelerated depreciation. “The issue of depreciation allowances based on effective life has a strong influence on decision making when it comes to major capital investments. The likely introduction of longer effective lives could result in a much lower tax deduction for many businesses. The survey has found that there are substantial design life variations among assets. Further, the effective life of an asset can be less than the design life because of the impact of economic, commercial and technical factors. The survey was undertaken by GHD on behalf of the Electricity Supply Association of Australia (ESAA), which represents 56 businesses covering generation, transmission, distribution and retail. It assembled detailed data on the range of effective lives normally found in electrical system components. “The tax system should contribute to an economic framework in a way that does not constrain investment in new assets which are typically more efficient than existing assets.” According to Ian Israelsohn, ESAA’s Assistant Director – Regulation and Taxation, “The application of a single effective life figure based on physical or design life for tax purposes will significantly disadvantage many ESAA businesses.” Known as Project Ninox – after a native Australian owl that sees and hunts in the dark – the facilities are part of a move to beef up night fighting capability. The light-proof buildings and contents are being designed from scratch by GHD in close consultation with Duntroon’s Field Training Wing. They will house two interactive ‘sets’ comprising jungle/woodland and urban streetscape, which troops will negotiate in various levels of darkness, using image-intensification (and infra-red) night vision equipment. Australian troops’ survival can depend on their night-time fighting capability. James said productivity in the electricity supply industry had improved markedly over the last 10 years, resulting in decreases in average real electricity prices of about 20 per cent, making it very competitive globally. ISSUE 112 | GHD NEWS | 17 Wellington acquisition adds special skills The recent acquisition of Smith Wood Engineering Consultants by GHD strengthens the New Zealand practice and adds special skills in servicing the food processing, storage and distribution industry. Kazakhstan; bakeries in New Zealand, Australia and Papua New Guinea; and controlled temperature storage/distribution facilities for vegetables, fruit and cut flowers. The company provided most of the process plant design as well as civil, mechanical and electrical design services. Smith Wood has also been engaged in commercial office fitout projects, services design for two large aged care retirement homes, and the structural design of multi-storey apartments in Wellington. Previous projects include structures and services for butter, cheese and whey products at Kiwi Co-op dairies; abattoirs in New Zealand, Russia and In 2000, GHD established a major presence in New Zealand with the acquisition of Auckland-based Manukau Consultants. Ashley Smith At the time, Wellington-based Smith Wood was overseeing the completion of a NZ$5 million apple juice concentrate plant for ProFruit in Hawkes Bay, the ‘fruit bowl of New Zealand’. The plant is designed to process 10 tonnes of apples per hour. The Hawkes Bay apple juice concentrate plant is one of many food facilities around the world designed by the new GHD practice in New Zealand. New cold steel mill facility for Newcastle A new steel cold mill facility proposed for Kooragang Island in Newcastle is expected to create 700 jobs during construction and 360 when operations commence. It would assist in maintaining an industry skill base in a region suffering from the closure of steel production facilities. GHD has been commissioned by Protech Steel to undertake an environmental impact study (EIS) and provide engineering and project management services. Advanced technology, based on current European and Japanese practices in steel processing and environmental protection, will be used at the plant which will be located near the existing coal terminal. GHD Project Director Steve Burns says the proposed development will assist in maintaining an industry skill base in a 18 | GHD NEWS | ISSUE 112 Steel product that could roll out of the Newcastle mill by 2004. region that has suffered from the closure of steel production facilities. The EIS will cover such issues as air quality, noise, transport and water quality in the Hunter River. It is scheduled for public exhibition in July 2001. Financial close, which triggers the formal commencement of the detail design and construction phase, is expected in late 2001. Stage 1 of the project – to design, build and commission the cold mill facility – is expected to take 22 months. Full commercial operation is expected in the first quarter of 2004. GHD and Protech Steel are liaising with NSW Government agencies to resolve land and infrastructure issues at the 94-hectare site. Upgrades will ensure smoother traffic flows Computerised traffic control systems in Perth are being upgraded to enable traffic to flow more smoothly during busy times. There will be a software upgrade and a move from a proprietary computer system, with limited interface capabilities, to a Windows NT platform, an open system. The upgrades will improve coordination among seven traffic control regions in the Main Roads WA network. Each region is responsible for between 126 and 256 traffic signal intersections. The software being upgraded is SCATS (Sydney Coordinated Adaptive Traffic Control System), developed by the NSW Roads & Transport Authority and now regarded as a world standard. The project is being managed by Stork-GHD, a joint venture which has been providing electrical maintenance for all signals, lighting and intelligent traffic systems across the State. Non-SCATS systems operate on the basis of fixed time systems, which are incapable of co-ordinating platoons of traffic flow between traffic control signals. The new operating system can be interfaced with a greater variety of systems, including intelligent transport systems. “The new system is not only dynamic and adaptive, but also offers greater reliability and expandability,” says GHD Project Manager Venkat Iyer. “This minimises asset downtimes.” Bullcreek, the first of the targeted traffic control regions to be upgraded, was completed in 2000 and plans are being drawn up for three more. GHD’s task included the design, specifications and documentation and assistance with installation and commissioning. An operator in Perth’s Traffic Operations Centre reviews activities at the new Northbridge Tunnel. ISSUE 112 | GHD NEWS | 19 MANAGEMENT ENGINEERING ENVIRONMENT www.ghd.com.au GHD is an international company providing leadership in management, engineering and the environment with a commitment to balanced sustainable development. 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