Waste Management

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Waste avoidance, recovery and reuse of discarded materials, effective landfill management and responsible management of hazardous wastes are all critical elements of sustainable development.

The need to minimise waste generation rates, and to recover and utilise by-products of waste degradation (through alternative waste treatment technologies or modifications to current waste disposal methods) is dictating the future of waste management practices.

GHD has a large team of specialists providing current advice and solutions for the complete range of waste management issues, and assisting clients in developing sustainable practices to address their requirements now and into the future.

We work closely with environmental planners, scientists and community consultation specialists to deliver an integrated and complete service to our clients. Our services include:

  • Detailed and conceptual design for landfills, transfer stations, resources recovery facilities, containment cells, leachate and rehabilitation
  • Environmental management including modelling, monitoring, collection, assessments, compliance, industrial (solid/liquid) minimisation and cleaner production
  • Strategic planning for siting, resource and waste management, financial modelling and recycling or resource recovery
  • Legislative approvals and considerations including approvals for environmental planning, and infrastructure siting and operations
  • Alternative waste technologies assessment, selection, concept, design, feasibility and options
  • Auditing for waste and compliance
  • Community consultation

For further information, contact:

David Gamble
Tel: 61 2 9239 7100
Email: David Gamble

Ecolibrium AWT facility at Jacks Gully

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The EcolibriumTM Mixed Waste Treatment Facility in south-west Sydney is a key sustainability initiative from WSN Environmental Solutions (WSN). WSN is a major operator of waste management infrastructure in Sydney, Australia. The plant will utilise proprietary waste processing technology from an overseas technology provider, Arrow Ecology, to convert 90,000 tonnes of municipal waste produced each year into energy, recyclable resources and soil enhancement products. In doing so, approximately 70 percent of the waste received at the gate will be diverted from landfill and 2MW of renewable energy will be generated.

GHD’s engineering staff worked on improvements to the site layout, and designed the major buildings and site infrastructure to integrate the specialist waste processing equipment (checking it met local standards). Working closely with WSN and Arrow Ecology staff, GHD assisted with procurement of key plant items, such as the biological plant tanks and the biogas power plant. GHD also had a key role in the tendering of the main civil, mechanical and electrical services contracts.

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Gold Coast City Council Waste Network Review

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Since 2003, GHD has assisted Gold Coast City Council to strategically review waste infrastructure provided by the city. This primarily includes landfills and transfer stations as well as a small number of rural bin stations, but has also considered issues associated with kerbside collection services and the concept of user-pay. At the commencement of the project the waste network included five landfills, 11 transfer stations and three rural bin stations servicing a population of approximately 500,000 people.

Initially the project involved a critical review of existing waste infrastructure by taking a triple bottom line approach, i.e. considering economic, environmental and social factors. The outcome of this assessment, prepared in conjunction with council officers, was a timeline for rationalisation and upgrades to the network. From this timeline, a year-by-year budget estimate was developed  based on individual recommendations and capital and operating costs.

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Integrated Solid Waste Management Planning

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Delaware County, New York. As part of Delaware County’s goal to continue to utilise their existing landfill site, they embarked on extensive efforts to re-define their solid waste management goals and objectives. In order to do so, the County assembled a team of planning specialists who focused on centralised and integrated solid waste management and watershed planning issues.

As part of the overall strategy to fully utilise the existing landfill property, GHD successfully identified a solution to continue development of solid waste disposal and processing facilities at the County’s Solid Waste Management Center that satisfied environmental, regulatory, and watershed management standards. These efforts included: solid waste management planning; development of aggressive recycling and landfill diversion strategies; integration of multiple town transfer stations; biosolids management; wetlands evaluation; landfill siting study and permitting; landfill design and construction services; and municipal solid waste (MSW) co-composting facility development.

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NDIA

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GHD was commissioned to prepare a solid waste management plan for the new Doha International Airport in the Middle East.

The plan aims to help manage the large quantity of solid waste handled by the airport and to make certain it is disposed of in an efficient and environmentally appropriate and sustainable manner, with minimal impact on the amenity of airport users.

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Orange Waste Project

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Index

Background

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North Stradbroke Island Landfill Closure

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GHD was engaged by Redland Shire Council to prepare the design and documentation for the closure and capping of the North Stradbroke Island landfill. The landfill is situated off the main road between Dunwich and Point Lookout in bushland.

The design was not straightforward as North Stradbroke Island is predominantly a sand island. Alternatives had to be found to replace the standard clay cap. In addition the landfill included various pits and mounds around the site.

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David Gamble

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David is a principal engineer with more than 20 years' experience in waste management, including preparing feasibility studies for waste management infrastructure, waste strategy, design and operation of collection systems, alternative waste technology selection, recycling, packaging waste minimisation and landfill management.

David is GHD’s Service Line Leader for Waste Management, which gives him a global responsibility for promoting technical excellence in this area. He is a Chartered Professional Engineer and is listed on the National Professional Engineers Register for Environmental Engineering.

Position: Service Line Leader, Waste Management
Tel: 61 2 9239 7100

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