Environment

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Now more than ever, organizations recognize the need to integrate environmental factors into core business decisions. From supporting clients in compliance and permitting to remediation and redevelopment of existing assets, we have earned a reputation for excellence by offering integrated, practical and innovative solutions.

In today's dynamic business and regulatory environment, we strive to provide our clients with comprehensive, sustainable and financially sound business solutions to support the management of environmental liabilities.

We have been involved in some of the largest environmental remediation projects in North America, successfully transferring our experience from complex sites to providing effective solutions for small projects.

  • Air and noise management
  • Aquatic sciences
  • Climate change
  • Community and stakeholder engagement
  • Environmental site assessment and remediation
  • Environmental compliance and permitting
  • Environment Impact Assessment and approvals
  • Emergency response
  • Expert witness and litigation support
  • Health, Safety and Environment and audits
  • Natural resource management 
  • Spatial sciences
  • Sustainability
  • Waste management

For further information:
Tel:1-800-265-6102
E: Email GHD

Adobe Gulch Grasslands Habitat Restoration

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GHD is playing a key role in helping the San Francisco Public Utilities Commission restore a 66 acre watershed protection area in San Mateo County known as the Adobe Gulch Grasslands.

Our team developed a Mitigation and Monitoring Plan, produced design drawings and outlined specifications to restore the site to a diverse mosaic of native grassland, oak woodland, wetland and riparian habitat for species protected under the US Endangered Species Act. This includes the California Red-Legged Frog, San Francisco Garter Snake, Mission Blue Butterfly and the Bay Checkerspot Butterfly.

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Alameda County Water District Lower Alameda Creek Fish Passage

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The Alameda Creek watershed covers an area of 633 square miles and once supported a steelhead trout fishery.

Modifications to the Alameda Creek streambed and urbanization of the surrounding land, however, eliminated spawning areas and made it impossible for steelhead to migrate upstream. As a result, steelhead have been absent from Alameda Creek and its tributaries for several decades. 

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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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Buckeye Reclamation Landfill

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GHD took on the responsibility for implementing a United States Environmental Protection Agency (USEPA) approved remedy and providing long-term operation, maintenance, and monitoring (OM&M) for the Buckeye Reclamation Landfill in Ohio.

A Potentially Responsible Party (PRP) Group was able to divest Remedial Action liability to GHD for defined and undefined scope and timing for 30 years with a single, upfront payment.

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Caspar Creek Labyrinth Weir Fish Passage Restoration

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CalFire and the US Forest Service Pacific Southwest Research Station (PSW) worked cooperatively in a comprehensive paired watershed study at the Caspar Creek Experimental Watersheds in Jackson Demonstration State Forest, located in coastal Mendocino County, California. As part of the study, concrete dams equipped with precise flow measurement weirs were constructed providing an essential component of the scientific research. 

In 1964, a wooden fish ladder was built downstream of each weir. To avoid backwatering and submerging the measurement weir, which compromises its accuracy, tailwater levels were kept low requiring fish to leap over a two to three foot water surface drop at the weir. This precluded upstream passage of juvenile salmonids. During low-flow periods, leakage through the wooden fish ladder posed a significant risk of stranding and injury of juvenile salmonids.

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Curtis Hixon Waterfront Park, Tampa, FL, USA

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GHD worked with the City of Tampa to develop mitigation strategies for a flood-prone area in Curtis Hixon Waterfront Park.

A place to meet and enjoy Tampa’s waterfront, Curtis Hixon Waterfront Park overlooking the Hillsborough River is a unique urban design that attracts over 1 million people annually to its special events. The 8-acre park features a sloping Great Lawn with two fountains, a children's playground, public boat docks, a dog park, seat terraces, a pavilion, and a café. The downtown park integrates the Riverwalk, Glazer Children's Museum, and the Tampa Museum of Art.

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C.W. Young Regional Reservoir, Tampa, FL, USA

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GHD was engaged to assess the risk of sinkhole development at the C.W. Bill Young Regional Reservoir. Making the region’s water supply more drought resistant, reliable, and flexible, the 15.5 billion gallon reservoir stores and collects surface water from the Tampa Bypass Canal and Hillsborough and Alafia rivers during wet times. During dry times, water stored in the reservoir is withdrawn, treated, and blended with other supplies to serve the region.

As a result of groundwater pumpage from the Floridan aquifer for crop freeze protection, sinkhole formations were evident in Hillsborough County in 2010. The Florida Department of Environmental Protection (FDEP) was concerned that karst conditions under the Reservoir may have been altered by these rapid drawdown events. Furthermore, the 2014 berm expansion and increase in the reservoir pool may exacerbate the risk of sinkhole development and pose a threat to the safety of the reservoir and its neighbors.

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Department of Motor Vehicles (DMV) headquarters

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GHD was appointed by Lionakis Beaumont Design Group, a local Californian architectural firm, to prepare construction documentation, and coordinate the bidding, and construction management services for the remodelling of the DMV Headquarter building. Our responsibilities involved working closely with the architect and project team to identify and design the remediation of lead, asbestos, PCBs, and other hazardous materials associated with this comprehensive abatement and remodel of the third floor of this project. We are also currently involved in the investigation and abatement design for the last two phases of the project involving the fifth and sixth floors. Each 75,000 square foot floor is abated one floor at a time. With the exception of the floor being abated and remodeled, all other floors are occupied and functioning without disruption to their critical missions.

The work included hazardous demolition, asbestos abatement of fireproofing, pipe insulation, and resilient flooring, and abatement of other hazardous materials including lead, PCBs and mercury. GHD prepared hazardous materials abatement drawings and specifications for the construction document package, and provided construction administration services including compliance monitoring for a four-month hazardous removal phase.

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Donner und Blitzen River fish screen & passage improvements

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GHD’s team worked to a tight schedule with federal and state agencies to design fish passages and screening facilities which improved the movement of native fish through 20 miles of river in the refuge. All facilities included photovoltaic arrays to provide energy in off-grid locations.

The Malheur National Wildlife Refuge in eastern Oregon provides sanctuary to a range of fish and wildlife species. GHD supported the US Fish & Wildlife Service on the Donner und Blitzen River fish passage and screening improvement project. “This project has improved movement of native fish through 20 miles of the Refuge and created opportunities to limit movement of non-native fish,” Malheur Deputy Project Leader Chad Kerges said. “This helps the Refuge to advance its goals of improving conditions for native fish, reducing invasive fish species, and the protection of Refuge water rights”.

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East Fork Irrigation District Habitat Enhancement Program

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GHD has completed a number of habitat enhancement and fish passage projects for the East Fork Irrigation District, including fish screen & sand trap repairs, diversion headworks replacement, and habitat enhancement.

The East Fork Irrigation District delivers water from the Hood River watershed for use on nearly 10,000 acres of high quality agricultural property. The watershed supports anadromous fish runs and the district manages its deliveries to support water quality, water conservation and sensitive species. GHD has worked with the district to undertake a series of habitat enhancement projects that provide multiple benefits to the district and its stakeholder partners:

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Giacomini Wetland Restoration - Point Reyes Station, California

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An extensive tidal marsh complex once spanned the entire width of the headwaters of Tomales Bay, which is part of the Golden Gate Biosphere Reserve and a designated as a “Wetland of International Importance” under the Ramsar Convention. Tomales Bay is also one of 16 wetland areas that qualify for inclusion as a wetland of regional importance under the Western Hemisphere Shorebird Reserve Network because of its large number of wintering and migrating shorebirds.

In the early 1940s, more than 550 acres or 50 percent of the wetlands in Tomales Bay were diked and “reclaimed” for agricultural use. The Point Reyes National Seashore Association worked with a host of stakeholders and funding agencies to develop and execute a plan to breach the dikes and return the property to the Bay.

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Guasti Environmental Services

Situated at the base of the San Bernadino Mountains, Ontario is located in the midst of Southern California’s most accessible highways in the Inland Empire at the junction of the 10 (San Bernadino), 15 (Ontario) and 60 (Pomona) Freeways. The city is positioned amid some of Southern California’s most crucial transportation thoroughfares in road, rail and air travel, and is home to LA-Ontario International Airport, making Ontario a true transportation hub in Southern California. With employment nearly doubling in the past 10 years, Ontario is suited for some of the most exciting developments in the Inland Empire pipeline, including Guasti, a 50 acre mixed-use development located directly between Interstate ten and the Ontario International Airport.

Guasti  was once a self-sufficient community complete with a company store, bakery, fire station, hotel, post office and the world’s largest contiguous vineyard, encompassing more than 5000 acres. Home to the Guasti Mansion, the San Secondo d’Asti Catholic Church, Joseph Filippi Winery Tasting Room and Gift Shop, Saffron Catering and the Homestyle Café, Guasti is positioned to be a unique, planned community blending a proud history and an opportunistic future.

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Habitat Mapping of Klamath River Corridor - California

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GHD was commissioned by the Yurok Tribe to improve habitat mapping of the Tribe’s 64,000 acre reservation, which is located along the Klamath River in far northern California. The primary goal was to develop GIS layers that would better enable wildfire risk modelling and to provide an improved basis for habitat conservation planning and forestry practices.

GHD utilised a combination of remote sensing, GIS and field sampling activities to produce a customised vegetation model and habitat classification map. This included an analysis of LiDAR in the context of canopy height, regional geologic and soil data, existing vegetation data, and field validation. An unsupervised spectral classification of 4-band orthoimagery was undertaken to partition the study area into stratified clusters of presumed vegetation categories. Target vegetation classes were then identified via local ecological knowledge, including input from ecologists, timber managers and Tribal members. The result was a preliminary vegetation class model and base map that was used to conduct stratified field sampling for confirmation and training of the model.

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Improving assets

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In the US state of California, a small property developer is benefiting from the environmental remediation of its property portfolio, which includes 15 shopping centres. Seven of these contained dry cleaning facilities and had documented releases of chlorinated solvents, which were historically used as part of the dry cleaning process.

Seeking to improve environmental and compliance outcomes, the developer engaged GHD to perform investigations of the dry cleaning facilities, commission remediation activities, and work closely with regulatory agencies overseeing the projects. Mark Dockum, GHD's Job Manager says, “We performed soil remediation (soil excavation activities) at two of the sites and successfully negotiated closure of these sites with the regulatory agencies.

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Integrated Solid Waste Management Planning, Delaware County, New York USA

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As part of Delaware County’s goal to continue to utilize 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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Kanawha River, West Virginia

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Our client is completing an investigation of a 14-mile section of the Kanawha River near Nitro, West Virginia, under the Removal Action program for the United States Environmental Protection agency (USEPA). The river is partially controlled by a series of locks and dams, and is a major transportation route for coal and other materials. The investigation was completed in three phases:

  • Assembly and detailed review of existing information to develop a Site Conceptual Model (CSM)
  • Refining the CSM through focused sampling, including fish tissue, surface water quality, natural recovery analysis, and sediment quality
  • Additional sediment sampling to fill in data gaps to support remedy selection

Based on this information, GHD developed a detailed understanding of site conditions and recovery trends. We developed a 3D hydrodynamic model to support the evaluation of recovery trends and remedy selection. GHD completed human health and ecological risk assessments for the site and developed preliminary remediation goals.

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Petroleum Data Management

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GHD has been providing enterprise laboratory and data management services to a major petroleum company for its portfolio of more than 100 sites since 1998. Laboratory services are contracted by GHD, leveraging our significant purchasing volume to obtain highly competitive rates. Field data are collected on handheld devices using customized applications. Both laboratory and field data are imported electronically into a centralized database and data quality is reviewed by our chemistry team. Data access is provided to the client and its team of consultants either online or locally via applications developed by GHD.

The client has realized an annual savings of more than USD1.5 million by consolidating all tasks associated with environmental lab and data management. The data are in a consistent format and are fully accessible to the project teams. Our data management system enables the client to make informed decisions about site environmental activities, which has resulted in additional cost savings.

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Renovation of Federal Building at 50 United Nations Plaza

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GHD provided the hazardous materials consulting support for this study. The Federal Office Building located at 50 UN Plaza in San Francisco encompasses approximately 350,200 gross square feet and has a basement, attic and four principal floor levels. The building has certain historical elements that require protection, restoration, and preservation, however the building is in need of renovation, seismic structural upgrade, and restoration modernisation. GHD reviewed existing hazardous materials documentation, conducted an on-site survey to verify existing conditions, and reviewed the proposed new work scope under study. We summarised the hazardous materials present and identified hazardous materials impacted by proposed new work. We then provided a complete listing with recommendations for required remediation of impacted asbestos, lead-based paint, PCBs, Universal Wastes, CFC refrigerant gasses, and the fuel tanks associated with the emergency generator system. GHD provided mitigation options as appropriate and provided cost estimate support for the study. In this first phase, GHD was engaged as a sub consultant to Interactive Resources, Chuck Beavers, and AIA.

We were subsequently retained by the HKS/Architectural Research Group (ARG) who were awarded the historical renovation and seismic upgrade portions of this project. Federal stimulus funding was obtained for the preliminary demolition and hazardous materials abatement project to take place on an extremely aggressive, two-week turnaround schedule prior to general building renovation, modernisation and seismic retrofit of this building. GHD was ideally suited for this component as we were familiar with the building and the project objectives, and had previously worked with ARG in the past.

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Repair shoreline revetment, Diego Garcia

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GHD, as the prime engineer, provided civil and marine structural design, services under a Design/Build project with Black Construction at the US Navy support facility on Diego Garcia.

The project consists of demolishing existing shoreline protection, installation of 700 linear feet of new rock revetment, and site grading.  Documents developed included a basis of design report and calculations, construction plans and specifications. Revetment design was performed by determining the wave environment associated with the revetment grading and comparing this to the wave return periods predicted in the storm analysis.

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Salt River Ecosystem Restoration

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Working with a number of public agencies on one of the State of California’s biggest environmental projects, we provided design, permitting, and outreach services to restore more than seven miles of the Salt River and its floodplain and 290 acres of estuarine habitat.

The purpose of the Salt River Ecosystem Restoration Project is to restore historic processes and functions, necessary for re-establishing riparian floodplain corridor, wetlands and estuarine ecosystems as part of a land use, flood alleviation, and watershed management program, to the Salt River watershed. Levees constructed to protect the productive agricultural lands of the Salt River floodplain from the adjacent Eel River’s tidal and flood influences have altered regional drainage patterns, which, coupled with naturally high influent sediment loads, have resulted in accelerated aggradation and loss of stream and sediment transport function and habitat value across the Salt River floodplain. The ongoing aggradation and flooding of local infrastructure and agricultural land have led to loss of habitat for threatened and endangered species, reduced property values, and decline in agricultural productivity.

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Smith River Highway 199 diesel spill clean up

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In 2008, an accident involving a diesel truck released 4000 gallons of red-dyed diesel fuel into an inboard ditch along Highway 199 in Del Norte County, CA. Diesel fuel soaked the ground through the road prism and into the gravel bar adjacent to Smith River, a federally-designated wild and scenic river. GHD was selected to lead the emergency response, including efforts to contain the spilled diesel and prevent impacts to the Smith River.

This project was challenging due to the steep forested slopes, the urgency of cleanup and the magnitude of the spill. Our team worked with nine contractors and 12 public regulatory agencies in a showcase of collaborative effort between stakeholders toward a common goal. The remediation strategy negotiated with stakeholders was a combination of source removal, flushing of the road fill, and recovery and treatment of the water used for flushing. Only 117 days after the spill occurred, regulatory agencies concurred that necessary remediation and restoration were satisfactorily complete.

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Teledyne Ryan Demolition

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GHD has been retained to provide predesign, design engineering and general consulting services for the TDY Demolition Project. The site is owned by the San Diego Unified Port District and is currently leased to the San Diego County Regional Airport Authority.

The Teledyne Ryan site is being prepared for future expansion of Lindbergh field as part of the Airport Master Plan.

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Weed Beach Park Master Planning, Darien, Connecticut USA

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Weed Beach is an extraordinarily valuable asset to the Town of Darien. Located along the Connecticut shoreline of Long Island Sound, this park offers both active and passive recreational activities.

In May 2005, the Town of Darien Parks & Recreation Commission retained GHD to prepare a Master Plan for Weed Beach Park. The Master Plan was for the upgrade and expansion of an existing, heavily used, 22± acre park facility that contains a public beach, light craft launch area, picnic area, tennis courts, paddle tennis courts, children's play area, a number of buildings, 250± parking spaces and undeveloped woods. GHD services for this project included participation in public meetings, public outreach, park design and implementation phase assistance.

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Willow Run Creek Site, Michigan

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The Willow Run Creek Site involved the remediation of over 340,000 cubic yards of polychlorinated biphenyl impacted sediments and soil. GHD developed a program of pre-design studies, including pilot-scale dredging/dewatering studies, to determine the optimal method of sediment removal and processing.

The selected remedy involved dewatering of the work area, water treatment, and solidification of the sediments to provide the necessary strength for placement in a site-dedicated consolidation disposal facility (CDF). The CDF was designed to meet stringent Toxic Substances Control Act (TSCA) and Resource Conservation and Recovery Act (RCRA) hazardous waste disposal facility standards. 

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Aquatic Sciences
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Air & Noise
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Climate Change
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Contaminated Land
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EIA & Approvals
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Natural Resources
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Spatial Sciences
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Stakeholder Engagement
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Fouad Abo

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Position: Global Technical Leader, Environment
Tel: +61 3 8687 8191

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Perth Awards

The excellence of the services provided by our team have been recognised in the following ways:

  • Engineering Excellence Awards, Highly Commended for Integrated Water Management Toolkit (IWM)
  • Engineering Excellence Awards, Highly Commended for the Liverpool to Ashfield Pipeline
  • ACEA Award for Excellence, Silver Award of Highly Commended (ICT Project Category) for Integrated Water Management Toolkit, a software tool developed to streamline the process of integrated water management
  • Australian Concrete Repair Association (ACRA) Long Term Merit Performance Award for the Cathodic Protection (CP) of the Ulladulla Jetty, NSW
  • Engineering Excellence Awards, GHD with Northparkes Mines achieved a Highly Commended award in the Welfare, Health, Safety, Education & Training category for the Rill Tower Rectification project
  • Engineering Excellence Awards, GHD received the Overall Winner award for Grahamstown Dam Stage 2 Augmentation (new spillway and embankment) of the Engineers Australia Newcastle Division
GHD Library

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