Water

The 91^st 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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In May 2005, floods affected the northern region of Tauranga city resulting in the inundation of many properties.  In response to the flooding, Tauranga City Council implemented a city-wide Storm Recovery Programme. A major component of the Storm Recovery Programme was the Aerodrome Road Stormwater Catchment Upgrade, which began in September 2006 with capital works forecast at $5.6 million.

The Aerodrome Road stormwater catchment is widespread, covering 26 hectares in Mount Maunganui.  The environment is particularly complex as the catchment’s drainage flowed west via open drains and pipelines between buildings on private property to the harbour at the Port of Tauranga.  As this drainage was in a developed area, the upgrade could not be realistically undertaken without disruption to existing property owners and occupiers, and at a considerable cost to ratepayers.

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Ammonia Phosphorus Removal, Metropolitan Syracuse Treatment Plant Onondaga County, New York

In partnership with two other firms GHD was retained by Onondaga County, New York to provide engineering services in connection with the design and construction of improvements to its 84 million-gallon-per day Metropolitan (METRO) wastewater treatment plant, with the objective of upgrading the level of wastewater treatment provided for ammonia and phosphorus removal.

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Managing stormwater is one of Auckland City's many activities. Auckland City aims to protect Auckland's unique and valued environment and allow for future urban growth. It is Auckland City's job to assist Auckland's residents to make sure stormwater is managed properly on their land, and to safely remove stormwater across the city.

Auckland Transport’s drainage assets consist of approximately 27,300 catchpits, 2,100 soakholes and 450 manholes within the Auckland isthmus and Hauraki Gulf islands.  The condition and performance of these structures is critical not only to the city’s wider drainage and reticulation system, but also to the efficiency, safety and reliability of the transportation network.

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The ACEDP is a five-year AUD$25 million Australian Government, AusAID initiative, designed to improve environmental protection and natural resource management (in particular, water) to balance the needs of the environment and human development in China.

GHD was appointed managing contractor on 1 July 2007. The program promotes high-level government-to-government environmental policy dialogue and capacity building, and aims to deliver the following outcomes:

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GHD in collaboration with Butier Engineering were selected by Poseidon Resources to provide Owner's Engineering services for the development, construction and commissioning of the 50 MGD Carlsbad Seawater Desalination project. 

As Owner’s Engineer, GHD and Butier have and continue to provide general oversight and independent assessment of the performance of the Engineering Procurement Construction (EPC) Contractor relative to the delivery of the Carlsbad project.

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The City of Livermore, Public Works Department, Water Resources Division (WRD) is strengthening its asset management (AM) program to foster more efficient financial and physical resource investments and prolong the life of the water and wastewater infrastructure system.  As the first step toward asset management improvement, WRD contracted with GHD to assist in a strategic review of WRD’s current asset management practices.  This process identified improvement opportunities and assisted in developing projects to support WRD’s efforts to move its asset management practices closer to the established best appropriate practices.

Among a list of improvement projects, the Asset Hierarchy and Data Framework project was identified as high priority.  Establishing a structured and consistent data management approach will provide the WRD with an essential foundation to making asset management decisions.

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With the growth of Auckland City, the combined stormwater/wastewater system was exceeding capacity during rainfall events, resulting in pollution of the Waitemata Harbour. A conventional project model could not guarantee the level of service that Metrowater wanted for their customers during the separation process so they decided on an Alliance model – one that was strongly customer focussed. The project goal of cleaning up Auckland’s harbour was a philosophy of shared ownership and responsibility reflected in the principle – "it's ours". 

Metrowater is Auckland City's water and wastewater utility and was established by Auckland City Council to provide water and wastewater services to over 142,000 homes and businesses, reaching 420,000 people across Auckland City.  The area of operation covers 153 square kilometres with a water and wastewater network of more than 3,600 km of pipes. Metrowater’s expectation is that their customers receive the highest quality, reliable water supply possible and that Auckland City’s wastewater networks are managed in a cost effective, environmentally sound and sustainable manner.

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Cox Creek Water Reclamation Facility, Anne Arundel County, Maryland

The 15 million gallons per day Cox Creek Water Reclamation Facility (WRF) is the largest wastewater treatment facility in Anne Arundel County and is also the County’s largest single contributor of nitrogen to Chesapeake Bay. The County targeted the enhanced nutrient removal (ENR) upgrade of the Cox Creek WRF as the first step in a plan to upgrade all of their wastewater treatment facilities for ENR.

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Client: Smart Water Fund, representing Melbourne Water, City West Water, Yarra Valley Water, South East Water and the Department of Sustainability and Environment Melbourne is a rapidly growing urban centre that has experienced the risks and changes associated with climate variability, as an extended drought saw water supply dam levels fall to approximately 25% capacity during 2009.

Since 2009, issues surrounding both current and future water supplies and costs have become increasingly present in politics and the media.

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GHD is playing a leading role in 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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GHD provided hydrogeological and groundwater modelling services to develop a numerical model of part of the Upper Macquarie alluvial aquifer, and evaluation of alternative groundwater extraction options for sustainable water supply to the city of Dubbo.

The Macquarie River at Dubbo, in central-west New South Wales, is a major source of recharge to groundwater in the underlying alluvial aquifers, and both the river and groundwater are vital sources of water to the city of Dubbo. GHD services will allow Dubbo City Council to choose the best pumping scenarios between various bore locations and the river to minimise and share these impacts in the most equitable way.

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GHD was initially engaged to identify alternative seawater desalination technologies as part of a scheme to meet the Gold Coast Council’s future water needs as outlined in its WaterFutures program.

Following this review, GHD undertook water quality analyses and developed preliminary concept designs for a 50Ml/d to 100Ml/d seawater desalination plant. The continuation of the drought had brought this project forward and GHD provided technical support to the procurement team to deliver the project. This project is now being delivered under an alliance contract.

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The Hamilton City Council in New Zealand wanted a world-class Water Treatment Station that met the city's water needs and exceeded or met New Zealand Drinking Water Standards at the lowest whole-of-life cost.

The original Hamilton Water Treatment Station (WTS) was a conventional clarification and filtration plant with a nominal capacity of 80 ML/d. The WTS drew water from the Waikato River and, in recent years, the water has shown increasing levels of unpleasant taste and odour as river algal levels increased. Cyanotoxins levels above detectable levels have also been found.

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Highline Water District (HWD) is a municipal water system located just south of Seattle, Washington with 280 miles of water line.  Many of the water system assets are aging significantly, as they were constructed predominantly in the 1940s, 1950s, and 1960s.  In order to better manage its infrastructure assets the HWD desired to establish an Asset Management program.

GHD was contracted to prepare the Asset Management Plan (AMP) in conjunction with BHC’s Water Comprehensive Master Plan Update.  The objective was to summarize the ability of the HWD to deliver water services to its customers in the AMP.  This was achieved through the development of the AMP.

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The City of Phoenix provides water and sewer service to portions of Paradise Valley. One segment of the City’s Paradise Valley sewer appeared to have a negative slope and was an ongoing maintenance issue for the City.

The Water Services Department asked GHD to design a new sewer main to bypass the poor­ly performing segment. GHD’s scope of work included survey, utility coordination, design, specifications, cost estimating, 404 permitting, and public information services.

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The Hunua project is the biggest water pipeline project undertaken in New Zealand for many years and involves 30 kilometres of 1.3 to 1.9 metre diameter steel pipeline traversing Manukau and Auckland cities. It involves the crossing of Manukau Harbour, three motorways, three railway lines, a creek and eight streams.

GHD was engaged in 2005 to carry out an options study for a new watermain from ‘southern sources’ to ‘city centre’.  As a result of a competitive tender, GHD was jointly awarded the design contract in strategic partnership with engineering consultancy CH2M Beca in 2008. GHD services include:

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High demand for electricity and escalating costs for power production has increased the economic feasibility of building small scale hydroelectric facilities. The objective of this project was to reassess the finding of the previous studies regarding the feasibility of bypassing pressure regulating valves at Metropolitan Water District (MWD) service connections to Municipal Water District of Orange County (MWDOC) and instead use energy recovering hydroelectric turbines to produce energy while also regulating water pressure and flow.

Eighty-two turnouts, belonging to MWDOC Member Agencies, were evaluated based upon pre-determined evaluation criteria including:

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Onondaga County’s Department of Water Environment Protection has upgraded the Syracuse Metropolitan Wastewater Treatment Plant to meet stringent new water quality standards for Onondaga Lake by 2012.

GHD was selected to lead a team of three engineering companies in designing a world class plant based on its track record in the USA. "GHD is recognised as a leader in wastewater technology in the USA and this project has demonstrated why. The company’s work has enabled us to dramatically improve the lake’s water quality," said the Department’s Commissioner Patricia Pastella.

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Client: Melbourne Water
Date: September 2011
Challenge: GHD Undertook an audit of large (e.g. up to 3,000 Megalitres per day) of open channel and closed conduit meters within the Wastewater Treatment Plant to improve understanding of flow measurement across the site, to quantify the accuracy of flow measurement and the influence this is having on distribution of wastewater volumes within the plant.

Description

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GHD is providing support to the recently established Water Resources and Environment Administration (WREA) in the Lao People’s Democratic Republic (PDR) to develop a new strategy for managing the country’s water resources.

GHD will assist in conducting a comprehensive inventory of the country’s water resources and in developing a new national water resources policy and strategy. Our team will work with the WREA to review and analyse existing water related data, including hydrology and meteorology, water quality and groundwater information for all major river basins in Laos. The assessment will identify opportunities to improve data, information, systems and models, and will inform the development of an interim water resources policy for the period 2008-2010.

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Sime Darby Water Resources (Perak) Sdn. Bhd. engaged GHD to complete a pre-feasibility study and phase one of a feasibility study for the development of a groundwater resource in the state of Perak.

The studies were carried out to determine the potential for a sustainable groundwater resource of up to 5000Ml/d day from fractured rock and alluvial aquifer systems in the Batang Padang District. The first stage involved a detailed airborne and ground geophysical survey coupled with drilling of 49 groundwater investigation wells and aquifer testing at a number of these sites.

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Client: Gold Coast City Council (GCCC)

The Pimpama Coomera Waterfuture project is a Gold Coast City Council (GCCC) initiative investigating integrated urban water management. The aim is to drive more sustainable urban use of the region’s water resources.

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GHD designed this 150,000 gallon per day treatment plant using a sequencing batch reactor-activated sludge process, which included nitrification-denitrification to achieve a class A⁺ finished effluent.

Elements of design included influent flow metering, a fully enclosed duplex pump station, fine screens, first and second stage aeration for nitrification and denitrification, clarification, and aerobic digestion.  Sludge handling was accomplished through centrifuge dewatering.  Odor and noise abatement was incorporated through the total enclosure of headworks screens, aeration and clarification elements, sludge processing, air blowers, and electrical system inside a building.  The design included a bulk liquid sodium hypochlorite disinfection system for the final stage of treatment.  Finished effluent is used to irrigate golf turf.

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Improving the environmental health of the Murray River is a concern for all Australians. The Murray Darling Basin Authority regulates the river system. It offered to pay landholders affected by the release of water from storages.

GHD worked with the Murray Darling Basin Authority, the community and technical experts to identify the impact of released water on floodplain properties, to develop consistent assessment principles and to register the impact on title via easements.

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The Sanitation Districts consist of 23 independent special districts and provides wastewater and solid waste services for approximately 5.7 million customers in Los Angeles County.  The Sanitation Districts of Los Angeles County (Sanitation Districts) engaged GHD to assist in developing a pilot asset management plan (AMP) for their White Point Pumping Plant to demonstrate the concepts of asset management.

The pilot AMP was developed around the GHD formulated 10-step asset management process which is endorsed by the USEPA.  Development of the AMP enables the Sanitation Districts to advance its asset management program by providing the framework for understanding the assets owned, the service expected of the assets, and the investment required.  The Sanitation Districts intend to apply the knowledge gained from the pilot AMP to develop AMPs which incorporate the entire asset portfolio. 

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The new Scorpion Bay Marina is located on the west coast of Lake Pleasant.  The marina includes more than 300 boat slips, a boat pumping station, restrooms, showers, and a restaurant.  GHD provided permitting, design, and construction services for the marina’s wastewater treatment plant.  The plant is an activated sludge facility with extended aeration and de-nitrification capability.  It also includes sand filtration, chlorination and de-chlorination, and an aerobic sludge digester.  All of the reclaimed water produced by the plant is stored in an above-ground steel reservoir and pumped through the marina’s irrigation system. 

To enable the marina to open prior to the completion of the treatment plant, GHD also designed a temporary vault and haul system that included instrumentation and controls, secondary containment, an aeration system and an odor control air scrubber.  In addition, GHD provided design and construction support for the marina’s wastewater pumping system, which uses peristaltic pumps to move flows from boats, restrooms, and the restaurant to a common wet well where they are then pumped using grinder pumps off of the marina and to the treatment facility. 

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Scottsdale Booster Station

The City of Scottsdale commissioned GHD to design Booster Pump Station Number 179 (BPS179) to provide water pressure to the downtown Scottsdale area. The station serves as a dual purpose facility. It supplies potable water at a higher pressure to serve new high rise commercial and residential condominium projects.  It also serves as a link to the downtown arts district. The project’s architecture complements the atmosphere of downtown Scottsdale.

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GHD’s work with the ACT Electricity and Water Corp (ACTEW) on the Cotter Dam is helping to secure the territory’s water supply and raising the bar for sustainable construction. The AUD363 million project involves building a new 80 metre high wall to increase the main dam’s capacity from 4 gigalitres to 78 gigalitres, and building two saddle dams with walls 15-20 m high.

Working in an alliance with ACTEW and construction companies Abigroup and John Holland, GHD has been responsible for engineering design, stakeholder liaison, environmental approvals and safety and quality control during construction. GHD’s analysis identified the best location for the dam wall, and a cost-effective construction method using roller compacted concrete (RCC).

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GHD is currently developing a Security Master Plan for all of the water and wastewater facilities owned by the City of Surprise.  The plan includes multiple elements: site evaluation and identification of potential threats and vulnerabilities of each site; determination of risk level for each site; recommendation of a security improvement plan; development of security response procedures; recommended security standards and procedures for all future sites.

Systems evaluated included 20 water supply wells, 5 water treatment, pumping and storage facilities, 2 wastewater reclamation plants, and wastewater collection and water distribution systems serving a population of 125,000.

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GHD was commissioned to undertake water use audits of 50 council sites for Greater Shepparton City Council (GSCC).

Data was collected via site investigations, review of existing documents, billing information indicating water usage and relevant GSCC representatives under each water use category.

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In early 2005, GHD, and its partner Fichtner, were engaged by Sydney Water to undertake a feasibility study to determine if desalination was practical as an alternative water source that would complement Sydney’s existing water sources. The feasibility study, undertaken together with Sydney Water, in an integrated project team set the foundation for this milestone project.

The project comprised three main components, a 250ML/day capacity reverse osmosis desalination plant, the intake and outlet tunnels and associated marine works, and the delivery pump station and 18km long transfer pipeline across Botany Bay to the centre of the city. In a world first cement lined steel pipes of this size had never before been laid simultaneously in a string and placed in an underwater trench.

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The City of Tempe installed several large-diameter water meters on existing transmission lines to better monitor the real time flowrates and pressures in the water distribution system. The first phase of the project consisted of five meter locations, and the second phase will cover an additional four installations.

The project required a radio path study to ensure that each station will be able to communicate reliably with the City’s existing SCADA system. One site was unable to communicate by radio with the existing system, and instead ties into an existing sewer meter station nearby. The project will also require new electrical service to each meter station. Each station consists of a new precast concrete vault, a pressure transducer, and a bi-directional flow meter. The City chose full-profile, insertable electromagnetic meters. The design of the first phase of the project is complete. Design of the second phase will begin after construction of Phase I.

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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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As part of the City of Scottsdale’s broader water optimization program, the city turned to GHD to update its wastewater model. The objective was to reflect recent billing data and flow metering results as well as updated development plans and capital improvement projects.

GHD has a long history with the city, having designed more than 50 water projects within the region.

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GHD has been appointed by GWMWater to develop a modernisation plan for the Wimmera Irrigation Area in north-west Victoria.

The plan will consider the options available to increase the efficiency of the Wimmera’s irrigation system, taking into account issues such as climate change and the availability of water in the future.

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The AUD$2.5 billion Western Corridor Recycled Water Project is Australia’s largest water recycling scheme and the third-largest advanced water treatment project in the world.

It uses secondary wastewater from Brisbane and Ipswich, to produce 232Ml of purified recycled water a day. The project is the Queensland State Government’s response to unprecedented demand on its water supply due to population growth, climate change and the worst drought in recorded history.

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项目名称： TA No./ 37646 -中国洪水管理战略研究

客户名称:    亚洲开发银行

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项目名称：TA 7261干旱管理战略研究

客户名称：亚洲开发银行

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