Wastewater & Stormwater Collection Systems

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Up to 70 percent of the total value of wastewater infrastructure can be invested in the collection systems.

GHD has the knowledge base and systems to tackle any wastewater transportation problem — for new systems or the upgrading of existing assets.

Having designed more than 1000 sewage pump stations and over 6000km of sewers, our industry professionals challenge conventional approaches to establish new cost-effective benchmarks.

Services:

  • Integrated urban water management
  • Strategic planning
  • Network modelling
  • Network rehabilitation
  • Gravity and vacuum sewerage schemes
  • Pump stations
  • Special structures
  • Project management
  • EPCM services
  • Overflow reduction
  • Infiltration and inflow
  • Sulphide control, minimisation and rehabilitation

For further information, contact:

Brad Rudsits
Service Line Leader, Wastewater & Stormwater Collection Systems – Australia, Chile, New Zealand, Asia Pacific, Europe and the Middle East
T: +64 9 370 8388
E: Brad Rudsits


Karen Edgington
Service Line Leader, Wastewater & Stormwater Collection Systems – North America
T: +1 905 686 6402
E: Karen Edgington

91st Ave Treatment Plant

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The 91st Avenue WWTP Chlorination Improvements project involved the replacement of a 120-ton bulk chlorine system with a system consisting of 32 one-ton chlorine cylinders.  The plant has a treatment capacity exceeding 180 mgd. The existing chlorination equipment and piping was replaced while the plant was in full and normal operating condition. The plant’s treated effluent is used at the Tres Rios Wetlands and as cooling water for the Palo Verde Nuclear Generating Station.

The project also involved the development and coordination of the Maintenance of Plant Operation (MOPO) procedures. The chlorination of the plant effluent had to be maintained at all times during construction. The project also included building structural, electrical, and HVAC modifications. The equipment installed included the following:

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American Memorial Park Visitor’s Center Saipan, CNMI

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American Memorial Park honors the American and Marianas people who gave their lives during the Marianas Campaign of World War II. As part of a design team, GHD provided civil, structural and environmental engineering services for major improvements to the park and the downtown Garapan area. The project consists of three elements: a new memorial garden, a new visitor cultural center, and improvements to the existing amphitheater.

Our team provided engineering site investigations, subsurface soils exploration, and identification of permit requirements. Site civil improvements included water and sewer utilities, parking, entrance access, walkways, and drainage. The structural design for the new visitor cultural center that is a 7,000 ft2 single-story structure included an in-house theater, as well as a fabric cover on the outdoor amphitheater.

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Clear Harbour Alliance

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Dubai JAFZA Water Utility

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GHD plays a leading role in securing Dubai’s current and future water requirements.

Our team in the Middle East has completed preliminary engineering work on the Jebel Ali Free Zone (JAFZA) Utility project to provide water infrastructure to an area of 8500ha that includes the JAFZA Free Trade Zone, Technopark and downtown Jebel Ali. These precincts comprise both greenfield and existing development with industrial, commercial and residential land uses.

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East West Link

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GHD has been working as part of the East West Link Planning Alliance alongside the NZ Transport Agency, Beca and Buddle Findlay since 2016 to deliver the suite of consents for the project with the aim of having the NZD1.25 to NZD1.85 billion project ‘tender ready’ by December 2017.

The East West Link is one of the New Zealand Government’s top priority transport projects in Auckland. It is also one of the top priority projects identified in the ‘Auckland Plan’ – the planning guide for the city. The project aims to:

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Easton Wastewater Treatment Facility, USA

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GHD has helped the town of Easton in Maryland, USA, implement the first Enhanced Nutrient Removal Wastewater Treatment facility funded by the Chesapeake Bay Restoration program.

The plant was designed to meet new National Pollutant Discharge Elimination System limits of 4.0 mg/l Total Nitrogen (TN) and 0.3 mg/l Total Phosphorus (TP) on an annual average basis. It serves the Town of Easton and is designed to treat an average daily flow of 4.0 mgd, expandable in the future to 6.0 mgd.

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Hughenden sewerage scheme upgrade

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Hughenden, approximately 350 km west of Townsville in North Queensland, is the main business centre for the Flinders Shire Council and home to 1200 people.

The existing Hughenden sewerage scheme was first established in the late 1940s; however, it was originally restricted to the southern side of the Flinders River. Prior to the upgrades, the southern sewerage scheme consisted of a gravity sewerage system, two pumping stations and a Sewerage Treatment Plant (STP) located 600 m west of the town centre.

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Prebbleton Scheme Assessment

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GHD has completed a review of five intersections adjacent to the Prebbleton, a township in the Selwyn District in the Canterbury Region of New Zealand, located 11 km southwest of the centre of Christchurch.

The objective of this project was to propose suitable upgrades to improve safety, reduce severance through the township, and provide more efficient linkages to the motorway interchange currently under construction.

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Sewage station upgrade meets future demand

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The regional Municipality of York in Canada’s Greater Toronto Area (GTA) looked at practical measures to cope with an expected population increase, and sought to boost its sewage system to cope until the year 2051.

To meet this requirement, GHD provided assessment and design services to increase the capacity of the Leslie Street pumping station by more than 45 percent, with an additional increase of another 50 percent for the near future.

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South Caboolture Sewage Treatment Plant, Australia

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A recent upgrade to the South Caboolture Sewage Treatment Plant in Queensland is accommodating future population growth in the region and achieving higher environmental standards.  

GHD has assisted Unitywater by providing preliminary and detailed design, as well as support during the tender, construction and plant commissioning phases of the project.

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Stormwater Run-off Treatment Facility

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Adelaide City Council previously had issues with controlling stormwater run-off containing organic and other contaminants from a green waste facility in Adelaide’s parklands, adjacent to the Torrens River.

The council engaged GHD to undertake an investigation related to run-off volumes and contaminants, which identified there was an environmental risk associated with release of the stormwater from the site.

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Toowoomba Regional Sewerage

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Following the amalgamation of eight local government boundaries, GHD was commissioned to develop a high-level strategy for the Toowoomba Regional Council for the planning of wastewater treatment plants and effluent reuse.

The study included a review of previous planning studies completed by the former local authorities, a population review and a look at loadings. A brief assessment of the status of the area’s existing sewage treatment plants was undertaken to determine their capacity and if they should remain as a stand-alone system or be integrated with other systems.

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Town of Westport Water Pollution Control Facility Upgrade, Westport, Connecticut USA

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GHD has provided wastewater facilities planning services and designed the recommended improvements to expand and upgrade Westport’s Water Pollution Control Facility (WPCF). The award winning design required creative facilities layout and phasing of construction to allow construction on a very limited site, and provides enhanced nitrogen removal to help restore Long Island Sound.

As part of our engagement, we performed a detailed evaluation of the unsewered areas, identified the areas in need of sewers, and defined the limits of the future sewer service area. Future sewer flows were projected, which required a doubling of capacity and upgrade of the WPCF.

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Victoria Street West Cycleway

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GHD is excited to work with AT on another important link in Auckland’s cycling network. The Victoria Street Cycleway (formerly called the Midtown Cycleway) will be a dedicated, physically separated from motorised traffic for the whole route running between the Beaumont Street intersection and the Hobson Street intersection along Victoria Street West.

The goal of the Victoria Street Cycleway is to create a continuous separated, safe, and attractive route to and from the city. Where practical, the cycle lanes will be physically separated from pedestrians with a small kerb. The Victoria Street Cycleway will be the first section of a larger midtown cycling connection. This connection will provide safe, separated cycling facilities between Victoria Park and the Auckland Domain, creating cycleways to and through the heart of the city centre from the west and the east.

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Washington Suburban Asset Management (Md, USA)

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The Washington Suburban Sanitary Commission (WSSC) appointed GHD to lead the provision of asset management services in support of master planning and enterprise resource planning initiatives.

WSSC is the eighth largest water and wastewater utility in the USA, owning USD$12 billion of infrastructure assets. While instituting a range of short-term measures to combat the increasing incidence of water main breaks and leaks, WSSC is also taking a long-range strategic approach to address the growing challenge of ageing infrastructure.

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Brad Rudsits

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Brad Rudsits is a principal engineer and project manager, who has undertaken modelling, design and project management of wastewater, stormwater and water projects.

During his 15 year career, Brad has gained valuable experience on a range of projects throughout Australia, New Zealand and the Pacific – both as an engineering leader and senior designer having successfully managed multidisciplinary projects based both alongside and remotely from the project team. The projects have ranged from small pump station upgrades through to major rising main and tunnelled sewers.

Brad has specific skills and extensive technical expertise in design, construction requirements and operability of large diameter sewer, pump stations and trunk wastewater infrastructure.

Service Line Leader, Wastewater and Stormwater Collection Systems – Australia, Chile, New Zealand, Asia Pacific, Europe and the Middle East
T:
+64 9 370 8388
E: Brad Rudsits

GHD Thought Leadership

Below is a selection of technical papers and presentations by members of GHD’s Wastewater Collection Systems.

2015 papers

GHD Library

The GHD library is a collection of relevant resources to this service line.